Irish Grammar List

An attributive adjective usually follows its noun: leabhar mór. Gender, number and case can change the adjective's form or initial consonant.

Ordinary yes/no questions are commonly answered by repeating the relevant verb form: An dtuigeann tú? Tuigim. Do not use is ea for every question.

Irish distinguishes broad and slender consonants. Adjacent a, o and u usually signal broad consonants; e and i signal slender ones, as in bó and bí.

Eclipsis prefixes a consonant, as in bád becoming mbád and teach becoming dteach. The written original consonant remains visible.

Lenition changes an initial consonant and is usually written with h: bád becomes bhád. Its grammatical trigger must be learned with each construction.

Irish usually has no separate word for a or an: Tá cat anseo can mean There is a cat here. Context supplies definiteness where no article appears.

Irish nouns are masculine or feminine. Gender affects articles, adjectives and mutations; learn a noun with its gender, as in an fear and an bhean.

The acute accent marks a long vowel and can distinguish words: fear means man, while féar means grass. Preserve it in spelling and search.

A simple finite clause usually places its verb before the subject: Léann Máire leabhar. Phrases with the copula have their own patterns.

Possessive a meaning their causes eclipsis: a mbád. Compare a bhád for his boat and a bád for her boat.

Possessive a meaning his lenites: a bhád. Before a vowel there is no h-prefix: a athair means his father.

Possessive a meaning her does not lenite consonants: a bád. Before a vowel it prefixes h: a hathair.

Ach commonly means but: Tá sé beag ach tá sé compordach. Its only and except uses depend on their construction.

Irish commonly expresses possession with bí and ag: Tá carr agam. The possessed item is the grammatical subject.

Bí plus ag and a verbal noun presents an ongoing activity: Tá mé ag léamh. The verbal noun is not a finite present-tense verb.

Ag combines with personal pronouns: agam, agat, aige, aici, againn, agaibh and acu. Tá leabhar aici means She has a book.

Agus joins words and clauses: tae agus caife; Tá mé anseo agus tá sí sa bhaile. Its richer simultaneous-action uses come later.

An is the singular definite article: an leabhar. Its effect on the following noun depends on gender, case and initial sound.

The interrogative copula is an: An múinteoir tú? Copular questions have copular replies such as Is ea and Ní hea.

In the singular common case, an lenites many feminine nouns: an bhean, an chathair. Dental and s-initial patterns need their own rules.

Use an bhfuil to ask about a present state or location: An bhfuil tú anseo? Answer with Tá or Níl as appropriate.

Seo and sin follow a definite noun phrase: an fear seo, an teach sin. An adjective stays inside the noun phrase: an teach mór sin.

A masculine singular common-case noun beginning with a vowel normally takes t- after an: an t-uisce. Exceptions include euro, iomad and oiread; this is not the feminine pattern.

Certain feminine singular common-case nouns beginning with s take t after an: an tsráid. The trigger depends on the sound following s.

Use ar in many state expressions: Tá ocras orm; Tá áthas uirthi. Learn the noun and preposition together.

Ba mhaith liom cupán tae means I would like a cup of tea. This is a useful polite request, distinct from stating a present fact with is.

A feminine singular common-case noun normally lenites a following adjective: bean mhaith. The adjective after tá is not governed by this noun-phrase rule.

Bhur means your for more than one addressee and causes eclipsis: bhur gcarr. It is distinct from singular do.

Cad and céard ask what. Both occur in Irish; retain coherent regional usage rather than mixing alternatives within one example.

Cathain asks when: Cathain a bheidh tú ann? Match the following verb's tense to the time being asked about.

Conas atá tú? asks how you are. Other varieties use forms such as Cén chaoi a bhfuil tú?; they are not errors.

Cá bhfuil an siopa? asks where the shop is. Other tenses of bí use their appropriate forms after cá.

Cé asks who, as in Cé thusa? and Cé atá anseo? The rest of the question depends on whether it identifies someone or asks about a clause.

Cén selects a noun in questions: Cén leabhar? It is not followed by a second definite article in the same noun phrase.

Cén fáth asks why: Cén fáth a bhfuil tú anseo? The following clause uses an appropriate relative construction.

Possessive do means your for one addressee and normally lenites: do mhála. Distinguish it from the preposition do.

The preposition i marks location in and causes eclipsis: i mbád. Before a vowel it appears as in: in Éirinn.

Use the copula to classify someone or something: Is múinteoir mé. This pattern differs from tá plus an adjective or location.

Is ea and Ní hea answer appropriate copular classification questions. They are not universal replacements for yes and no.

Is maith liom ceol means I like music. The person who likes something is expressed with le, not as a subject after tá.

Is mise Nóra identifies the speaker. The emphatic pronoun supplies the link between the copula and a name.

Le means with and also appears in liking and ownership expressions. Before the article its form is leis: leis an múinteoir.

Le combines with pronouns as liom, leat, leis, léi, linn, libh and leo. Each form contains the preposition and its person.

Mo and do shorten before a vowel and before silent lenited f in the relevant forms: m'athair, d'ainm, m'fhear.

Mise and tusa emphasize or contrast participants: Tá mise réidh. Emphatic forms are not required whenever English stresses a pronoun.

Mo means my and normally lenites an eligible following consonant: mo chóta. Before a vowel sound it has an elided form.

The basic subject pronouns include mé, tú, sé, sí, muid, sibh and siad. Sinn is also a first-person plural form; pronoun choice can reflect variety.

Na marks the definite plural in the common case: na leabhair. Genitive uses of na need separate treatment.

The plural common-case article na prefixes h to a vowel-initial noun: na héin. Contrast genitive plural forms that take eclipsis.

Ní makes a negative copular classification: Ní dochtúir mé. The following phrase follows copular rules, not those of ní with ordinary verbs.

Ní maith liom an bia expresses that the speaker does not like the food. It negates the copular liking construction.

Níl negates tá: Níl mé tuirseach. Do not add ní directly to tá to form the standard negative.

Nó means or: Ar mhaith leat tae nó caife? It joins alternatives without using English word order inside the Irish clauses.

Ar has inflected forms such as orm and uirthi. They express on and participate in expressions of feeling and obligation.

Sa and san combine i with the singular article: sa teach, san oifig. The resulting mutation follows this combined construction.

Seo Nóra introduces Nóra, while Sin mo mhála points out my bag. These presentational patterns do not require tá.

Use tá for a present state or location: Tá Nóra sásta; Tá an leabhar anseo. A noun classification normally needs the copula instead.

An adjective after tá describes the subject: Tá an bhean maith. It does not automatically receive the lenition of a feminine attributive adjective.

Ár means our and eclipses an eligible consonant: ár dteach. Before a vowel it introduces n-: ár n-athair.

É, í and iad are common third-person object forms: Feicim é; Feicim í; Feicim iad. They also occur in copular constructions.

The first conjugation uses future endings such as -faidh and -fidh: molfaidh sé, brisfidh sí. Stem and spelling adjustments vary by verb.

Common second-conjugation future forms include ceannóidh and imreoidh. The future stem may differ visibly from the present stem.

The second-person singular imperative is often the dictionary citation form: Dún an doras. Use the form appropriate to the addressee and verb.

Plural imperatives commonly end in -igí or -aigí: Dúnaigí an doras. They address more than one person.

Many regular past forms lenite the verb stem: mhol sé, bhris sí. Do not extend this statement to every irregular verb.

Seven to ten cause eclipsis in ordinary noun-counting phrases: seacht mbád, deich gcapall. The noun is not an English-style plural.

In ordinary counting phrases, three to six take a singular-form noun with lenition: trí bhád, sé chapall. Dental and other exceptions need attention.

Counting without a following noun uses forms such as a haon, a dó and a trí. These differ from noun-counting and personal numerals.

Abhaile expresses movement home; sa bhaile expresses location at home: Téim abhaile; Tá mé sa bhaile.

An normally causes eclipsis in ordinary present questions: An dtuigeann tú? A vowel-initial verb takes n- after the particle.

An chéad forms first: an chéad lá. Its mutation pattern differs from that of most ordinary attributive adjectives.

An- intensifies an adjective and often causes lenition: an-mhaith. Its spelling and dental-cluster exceptions matter.

Anseo means here and ansin means there. Ann can express in it or there and appears in existential constructions.

Aon plus a noun and amháin can specify one item: aon lá amháin. The noun may mutate after aon depending on its initial consonant.

Ar forms many simple-past questions: Ar léigh tú é? Contrast irregular patterns such as An raibh tú ann?

Beidh locates a state or location in the future: Beidh mé anseo amárach. Its negative is ní bheidh and its question is an mbeidh.

Bhí places a state or location in the past: Bhí mé sa bhaile inné. Its negative and interrogative forms differ.

Bí ciúin tells one person to be quiet; Ná bí buartha says not to worry. The plural forms include bígí and ná bígí.

Bíonn describes a repeated or habitual state: Bíonn sé anseo gach lá. Tá is used for a current state or situation.

Many second-conjugation verbs form the present with -íonn/-aíonn: ceannaíonn sé and ceannaím. Learn the class rather than inferring it from syllable count alone.

Feic has chonaic as an independent past and faca after relevant particles: Chonaic mé í; Ní fhaca mé í; An bhfaca tú í?

Téigh uses chuaigh independently and deachaigh in dependent contexts: Chuaigh sé abhaile; Ní dheachaigh sé; An ndeachaigh sé?

Chuig introduces a destination, person or event: chuig an siopa, chuig Nóra. It does not simply replace every use of go.

Céad and míle appear in larger numbers and counting phrases. Distinguish a bare numeral from a quantified noun phrase such as céad duine.

Before a vowel and lenited f, relevant past forms use d': d'ól sé, d'fhág sí. Past-tense d' is not the possessive d'.

Ith has d'ith in affirmative past clauses: D'ith mé arán. After níor or ar, use forms such as níor ith and ar ith.

Dhá is followed by a singular-form noun and usually lenition: dhá bhád. Some nouns have special traditional dual forms.

Do expresses to or for and has forms dom, duit, dó, di, dúinn, daoibh and dóibh: Tabhair dom é.

Duine counts one person and beirt counts two: beirt chairde. Personal counting constructions are not the same as ordinary object counting.

Abair has the past dúirt: Dúirt sé é; Ní dúirt sé é; An ndúirt sé é? This verb does not follow every regular mutation expectation.

Maith and olc have comparative forms fearr and measa. Learn the irregular comparison separately from the ordinary adjective.

Faigh uses fuair, ní bhfuair and an bhfuair: Fuair mé litir. These are irregular dependent patterns.

Go often marks destination with place names: go Corcaigh, go hÉirinn. Article-bearing place names use different constructions.

Go forms many manner adverbs: go mall, go maith. Not every English adverb corresponds to go plus an adjective.

Adverbial go prefixes h before a vowel-initial adjective: go hiontach. Distinguish this from the complementizer go.

Tá mé i mo mhúinteoir presents the subject in a role. Match the possessive element to the subject: Tá sí ina múinteoir.

A relative superlative uses is with the comparative: an teach is mó. Do not translate English -est with an ordinary adjective ending.

The first conjugation has forms such as léann sé and léim. The first-person ending already supplies the person in a synthetic form.

Synthetic first-person plural forms such as molaimid include we in the ending. The written standard also accepts molann muid; dialect preferences affect their frequency.

Ná introduces the standard of comparison: níos mó ná an teach sin. This ná is different from the negative imperative particle.

Ná introduces a negative command: Ná bris é. It is not the ordinary declarative negative ní.

Ní normally lenites an eligible initial consonant: Ní thuigim. Irregular bí uses níl in its present negative.

Use Ní raibh mé ann and An raibh tú ann? The dependent form raibh follows these particles.

Níor forms many simple-past negatives: Níor léigh mé é. Several irregular verbs retain ní with a special dependent form.

Níos precedes a comparative adjective, as in níos mó and níos deise. The comparison may be followed by ná.

Déan has rinne and dependent dearna: Rinne sí é; Ní dhearna sí é; An ndearna sí é?

Tabhair has thug in the past: Thug sí leabhar dom. The recipient is commonly expressed with do.

Tar has tháinig in the past: Tháinig sí; Níor tháinig sí; Ar tháinig sí? Learn the particle pattern with the verb.

Personal numerals include triúr and ceathrar: triúr páistí. Following noun forms and mutation are learned with the personal-number construction.

Tá siopa ann says that a shop exists or is there. This differs from classification with the copula.

Contrast Tá sé sa bhaile anois with Bíonn sé sa bhaile ar an Domhnach. The difference concerns aspect and regularity, not simply clock time.

Ó combines with personal pronouns as uaim, uait, uaidh, uaithi, uainn, uaibh and uathu. Tá cabhair uaim expresses a need for help.

Ó expresses from and generally lenites a following consonant: ó Bhaile Átha Cliath. Its pronominal forms include uaim and uaithi.

A plural adjective is lenited after many nouns with a slender-ending plural: fir mhóra. Contrast vowel-ending plural noun phrases.

Emphatic suffixes contrast possessors or people: mo leabharsa, agatsa. Their form and attachment depend on the phrase.

Irish traditionally groups nouns into five declensions. Genitive singular and plural behavior, gender and stem changes determine useful patterns rather than an English case ending.

Strong plurals generally keep their plural form in the genitive; weak plurals have a distinct genitive plural pattern. Learn this distinction from actual paradigms.

Nuair a introduces a time clause: Nuair a tháinig sí, bhí mé ann. The following verb follows the relative construction's mutation and form.

The vocative particle a introduces direct address and triggers lenition; masculine names may also slenderize: a Sheáin. A Nóra has no such final change.

A chairde addresses a group of friends. Vocative phrases have their own noun and mutation patterns rather than simply adding English hey.

Abair has present deir and future déarfaidh: Deir sí é; Déarfaidh sí é. Its irregular behavior includes how particles combine with the initial sound.

Aon appears in negative expressions such as Níl aon airgead agam. The whole clause supplies the negative force.

Ar feadh expresses a duration: ar feadh seachtaine. It is distinct from le in expressions of time continuing up to now.

As marks movement out of or origin: as an teach, as Éirinn. Its pronominal forms include asam and aisti.

Fifth-declension nouns may add a broad consonant to the genitive stem: athair to athar and máthair to máthar. Learn each noun's actual paradigm.

Beir has irregular past rug and future béarfaidh: Rug sí ar an liathróid. The preposition ar is part of the catch or seize construction.

Many second-declension feminine nouns add a genitive ending with slenderization: bróg to bróige. Plural formation remains a separate property.

Fourth-declension nouns keep the same singular form in common and genitive cases: cailín, ainm an chailín. Article mutation can still change the initial consonant.

Strong plurals such as cailíní keep their plural shape across common and genitive cases. Article mutation still differs between cases.

Some genitives involve syncope and a suffix: cathair to cathrach. The inflected form may be substantially different from the citation form.

Chun marks direction or purpose and commonly governs the genitive: chun na scoile. It also introduces verbal-noun purpose phrases.

The standard includes hearing verbs clois and cluin with related but distinct paradigms: cloisim and cluinim. Use a coherent paradigm and label regional preferences.

Cuid introduces a part or quantity, often with a genitive or de: cuid den obair. It also occurs with possessives in plural or mass expressions.

De expresses meanings including of and off: cuid de, bain de é. Its inflected forms distinguish it from do.

Na marks a singular feminine genitive in phrases such as doras na scoile. Here na does not mean that scoil is plural.

Déan has present déanann and future déanfaidh: Déanann sí an obair; Déanfaidh sí an obair. The past rinne and dearna form a separate irregular pair.

De combines with pronouns as díom, díot, de, di, dínn, díbh and díobh. Third-person de and di overlap in spelling with other words but not function.

Faigh has present faigheann and future gheobhaidh. Dependent future forms include ní bhfaighidh and an bhfaighidh rather than mechanically reusing the independent stem.

Faoi expresses under and about: faoin mbord, faoin scéal. It combines with an as faoin.

Feic has present feiceann and future feicfidh: Feiceann sé an teach; Feicfidh sé an teach. The past chonaic and faca must be learned separately.

Many first-declension masculine nouns form the genitive singular by slenderizing: fear to fir. The exact stem must be learned for each noun.

Fear has common plural fir and genitive plural fear. The genitive plural can resemble the singular citation form.

Féin can emphasize a pronoun or noun phrase: mé féin, Nóra féin. Its reflexive interpretation depends on the sentence.

Gach normally takes a singular noun: gach lá. It does not need a separate definite article before its noun.

Gan means without and can negate a verbal-noun phrase: gan airgead, gan fanacht. Mutation depends on the construction and initial sound.

Go dtí expresses a boundary in time or space: go dtí an stáisiún, go dtí amárach. Before clauses it participates in forms such as go dtí go.

Go dtí go introduces an until clause: Fan go dtí go dtiocfaidh sí. Its verb follows the complementizer's dependent pattern.

Go leor means enough or plenty in phrases such as airgead go leor and go leor daoine. Learn the accepted noun-phrase order.

Idir expresses between: idir an teach agus an scoil. Its pronominal forms include eadrainn and eatarthu.

Ith has present itheann and first-person ithim, but future íosfaidh: Íosfaidh mé arán. Preserve the initial fada in the future stem.

Tá mé anseo le bliain describes a situation lasting a year up to now. The tense and context locate the continuing interval.

Le haghaidh expresses for or intended for: le haghaidh na bpáistí. It behaves as a compound preposition.

Mar can introduce a reason: D'fhan mé sa bhaile mar bhí mé tinn. Its clause behavior differs from go-complement clauses.

Mo chuid airgid and mo chuid leabhar express possession of mass or plural quantities. Cuid is not inserted before every singular possessed object.

Mura introduces a negative condition: Mura mbíonn am agam, ní thiocfaidh mé. Past-time forms such as murar belong to their own pattern.

Má introduces an open condition: Má bhíonn am agam, tiocfaidh mé. It normally uses present forms for a future condition rather than an English-style future verb.

Na causes eclipsis in relevant genitive plural phrases: ainmneacha na bhfear. This differs from common-case plural na fir.

The singular feminine genitive article na prefixes h before a vowel: muintir na hÉireann. Do not substitute genitive-plural n-.

The genitive plural article eclipses where possible: tuairimí na ndaoine. Before a vowel it gives n-.

Níl agam ach euro amháin means I have only one euro. The construction combines a negative clause with ach to restrict the set.

Roimh expresses before: roimh an gcruinniú. Its inflected forms include romham and roimhe; distinguish it from temporal roimhe seo.

Roinnt expresses an amount or number: roinnt airgid, roinnt daoine. The following noun's form depends on the expression.

Genitive formation can change more than the final written vowel: saol to saoil. Use the attested paradigm rather than a universal letter replacement.

Seo and sin can refer to things already mentioned: Tá sin ceart. They are distinct from their position after a definite noun phrase.

Sula introduces an event that another event precedes: Fan anseo sula n-imíonn tú. The following verb's dependent form and mutation matter.

Tabhair has present tugann and future tabharfaidh: Tugann sí cabhair dúinn; Tabharfaidh sí cabhair dúinn. Use do for the recipient.

Tar has present tagann and future tiocfaidh: Tagann sí gach lá; Tiocfaidh sí amárach. Its irregular stem changes belong to one verb.

Tar éis introduces an after relation: tar éis an chruinnithe. It functions as a compound preposition and commonly governs the genitive.

A following genitive noun phrase can identify a possessor: teach an fhir. A definite genitive modifier normally makes the whole phrase definite without another initial article.

Toisc introduces a reason in constructions such as toisc go raibh sé tinn. The particle sequence depends on the following clause.

Trí means through and usually lenites: trí fhuinneog. Do not confuse this preposition with the numeral trí.

Téigh has present téann and future rachaidh: Téann sé abhaile; Rachaidh sé abhaile. Its past chuaigh and deachaigh are separate irregular stems.

Ó introduces a starting point: Tá mé anseo ó Luan. Do not replace it with a duration expression such as le bliain.

Conditional forms include mholfadh sé and bhrisfeadh sí. They express hypothetical outcomes and suitable polite or future-in-the-past meanings; repeated past actions use a separate habitual-past paradigm.

Second-conjugation conditional forms include cheannódh and d'imreodh. Person-specific endings and initial changes must be learned with the verb.

A direct relative links an antecedent to a subject or direct object gap: an fear a tháinig, an leabhar a léigh mé. The particle normally lenites.

Embedded questions use appropriate interrogative particles: Níl a fhios agam an bhfuil sí anseo. Do not turn an embedded question into an affirmative go-clause.

Direct relative clauses use future forms with the relative particle: an duine a thiocfaidh and an rud a déarfaidh sé. Initial mutation still follows the individual verb.

Indirect relatives use dependent forms and normally eclipsis: an fear a bhfuil carr aige. A resumptive preposition or pronoun expresses the internal relationship.

Nach introduces many negative relatives: an duine nach bhfuil anseo. Relevant simple-past forms use nár instead.

An object can precede a and a verbal noun: an leabhar a léamh. The particle causes lenition where possible, as in an doras a dhúnadh.

A noun directly following many verbal nouns takes a genitive form: ag léamh leabhair. Definiteness and more complex noun phrases alter the pattern.

Nár occurs with many past negative relative clauses: an leabhar nár léigh mé. Irregular dependent patterns need separate attention.

A conditional autonomous form such as dhéanfaí expresses what would be done without naming the doer. Use the relevant verb's actual paradigm.

Future autonomous forms such as osclófar present an action whose agent is not named: Osclófar an doras.

Past autonomous forms include briseadh and rinneadh. Their initial mutation behavior is not the same as ordinary personal past forms.

An autonomous form such as labhraítear presents an action without naming its agent: Labhraítear Gaeilge anseo. It is not identical to every English passive.

A raibh can occur in indirect past relatives: an teach a raibh sí ina cónaí ann. Direct past relatives instead have a bhí.

Possessive forms can represent the direct object of a verbal noun: ag mo bhualadh means hitting me. A prepositional verb keeps its preposition: ag cabhrú liom means helping me.

Aithne with ar expresses acquaintance: Tá aithne agam ar Nóra. It differs from knowing information with a fhios.

Atá is the direct-relative form corresponding to tá: an duine atá anseo. Indirect contexts instead use patterns such as a bhfuil.

B'fhearr liom fanacht expresses I would prefer to stay. A following finite clause requires its own appropriate construction.

Ba chóir duit fanacht means You should stay. Do marks the person expected to act.

Bheadh expresses would be: Bheadh sé sásta. The negative and question are ní bheadh and an mbeadh.

Caithfidh mé imeacht expresses obligation. The same form can also convey inference in context, so it is not always literal throwing.

Chun followed by a verbal noun expresses purpose: Tháinig sí chun cabhrú. A following object may involve a genitive or preposed-object pattern.

Dá introduces a hypothetical condition and causes eclipsis: Dá mbeadh am agam, rachainn ann. The result clause carries an appropriate conditional form.

Regional and older progressive constructions can use dá before a verbal noun where the standard-oriented teaching frame uses á: dá dhúnadh. Label this receptive variant and distinguish it from conditional dá.

A past anchor can give a conditional sequence a counterfactual past reading: Dá mbeadh a fhios agam inné, ní dhéanfainn é. Without that context the same forms can express a current hypothetical; explain the intended time.

Go introduces an affirmative complement: Sílim go bhfuil sé anseo. It normally eclipses eligible consonants and selects dependent forms.

Gur introduces many simple-past complements: Dúirt sí gur léigh sí é. Certain irregular verbs instead retain go with their dependent past form.

Is féidir liom snámh expresses ability or possibility. Le marks the participant; the verbal noun describes the action.

Le followed by a verbal noun can express purpose or something to be done: le léamh. Its interpretation depends on the larger phrase.

Murar occurs with many past negative conditions: Murar chríochnaigh tú é, abair liom. Irregular verbs can use mura with their dependent form.

Nach introduces a negative complement: Sílim nach bhfuil sé anseo. Many simple-past complements use nár.

Nár introduces many negative simple-past complements: Dúirt sí nár léigh sí é. Contrast irregular nach raibh.

Ní féidir liom teacht negates the possibility construction. It does not use the negative of bí.

Bí ar tí followed by a verbal noun expresses imminent action: Tá mé ar tí imeacht. It differs from a simple future promise.

A verbal adjective with bí can present a resulting state: Tá an obair déanta. Ag may name the person responsible.

Bí in ann plus a verbal noun expresses capability: Tá sí in ann snámh. An object follows the verbal-noun syntax.

Bí tar éis a verbal noun can express recent completion: Tá sí tar éis imeacht. It is not simply the chronological preposition before an ordinary noun.

Tá a fhios agam expresses knowledge of a fact and can introduce a clause: Tá a fhios agam go bhfuil sí anseo.

Á combines a prepositional element and a possessive before a verbal noun. Mutation and context distinguish meanings such as á dhúnadh and á dúnadh.

Mutation is constrained in some dental clusters. Teach the actual constructions and attested forms instead of applying a universal replace-initial rule.

A verbal-noun phrase can act as a subject or topic: Tá sé deacair an obair a chríochnú. Object position and mutation remain those of the verbal-noun phrase.

Irish sometimes keeps a common-case form where a simple rule might predict a genitive, especially in complex definite constructions. Analyze the whole noun phrase.

Agus can introduce a circumstance with a pronoun and a nonfinite predicate: Tháinig sí isteach agus í tuirseach. It need not coordinate two finite clauses.

Ar eagla go introduces an unwanted possibility: Tóg cóta ar eagla go mbeidh sé fuar. The choice of tense depends on the intended possibility.

Ba and elided b' express past or conditional copular meanings: Ba mhúinteoir í; B'aoibhinn liom é. Context and following sounds determine the form.

Cé go introduces a concessive clause: Cé go bhfuil sé fuar, rachaidh mé amach. The following verb follows dependent-clause rules.

De réir introduces a standard, account or source: de réir na rialacha. As a compound preposition it commonly governs a genitive phrase.

De réir mar a links changes or developments: de réir mar a théann an lá ar aghaidh. The following clause follows its relative construction.

Deirtear go introduces what is said without identifying a source: Deirtear go bhfuil an áit álainn. Preserve the distinction between report and established fact.

Fiú má introduces an emphatic open condition: Fiú má bhíonn sé fuar, rachaimid amach. Do not conflate it with an unreal dá-condition.

Embedded identification and classification use forms such as gur múinteoir í and gurb í Nóra í. Following structure and sound determine the form.

I leith expresses relations such as concerning or towards: i leith na ceiste. Its interpretation is construction-specific rather than a literal spatial sum.

Ionas go introduces a purpose clause: Scríobh síos é ionas go gcuimhneoidh tú air. The following verb is dependent.

A copular cleft foregrounds an element: Is mise a rinne é. The following relative clause links the focused element to its role.

Is cuma liom expresses that something does not matter to the speaker. Embedded questions can name the alternatives that do not matter.

Is dócha go bhfuil sé ann presents a probable conclusion. It is an epistemic judgment rather than an expression of preference.

Is é Seán an múinteoir identifies a definite referent. Definite noun phrases do not simply follow the beginner classification template.

Is é Seán atá anseo identifies the person present. The pronoun and relative clause form a coherent identification construction.

Maidir le frames a topic: Maidir leis an obair, tá sí críochnaithe. The following le combines with its object in the usual way.

Mar a can introduce a manner relation: mar a dúirt mé. It differs from mar introducing a simple reason clause.

Mura mbeadh supplies a negative hypothetical condition. Coordinate it with a conditional result rather than a mechanically copied English tense.

Ní mise ach Nóra a rinne é corrects who did the action. The negation and contrast have a specific focus scope.

Past copular negation and questions include forms such as níorbh and arbh before suitable sounds. Their distribution differs from ordinary verb particles.

Sa chaoi go introduces a resulting arrangement or outcome: Labhair go soiléir sa chaoi go dtuigfidh siad thú. Context distinguishes result from purpose.

Connacht usage often favors analytic verb-plus-pronoun patterns. Written standard choices and spoken regional choices are related but not identical.

Official prose often uses denser genitive phrases, autonomous verbs and nominal expressions. Teach the structure without treating everyday alternatives as incorrect.

Forms such as bhíodh and théadh express repeated past situations. Synthetic endings and dialectal alternatives require separate treatment from a single completed past event.

Literary and historical verb forms require explicit register labels and attested examples. They are receptive advanced material, not the default learner production model.

Munster commonly retains synthetic personal forms in contexts where other varieties favor analytic forms. Teach them as regional grammar rather than as errors.

Nár can introduce a negative wish in suitable literary or formulaic constructions. Distinguish that use from past negative relative and complement clauses.

Irish permits omitted copular material in established answers, exclamations and presentational structures. Do not treat every missing is as an accidental omission.

Correlative comparative constructions use dá with comparative expressions: dá mhéad, is ea is fearr. The exact paired construction carries the comparative relationship.

Ulster Irish has distinctive verb, particle and prepositional patterns. Label attested forms and compare their function without substituting them unpredictably into another variety.

Synthetic forms combine verb and person, while analytic forms use a separate pronoun. Contemporary dialects differ in their distributions without being defective versions of the standard.

Fixed wishes preserve present subjunctive forms: Go raibh maith agat; Go n-éirí leat. These are not ordinary future indicative clauses.

An Caighdeán Oifigiúil standardizes writing and morphology rather than prescribing one universal spoken accent. Keep pronunciation variety and written conventions distinct.

Bhínn and bhíteá encode the first and second person in the habitual past. They contrast with analytic forms used in other persons and varieties.

Copular patterns express evaluations such as Is fearr é seo ná é sin. They differ from descriptive bí plus comparative phrases.

Rachainn and rachaimis encode their subjects in conditional endings. Do not add a redundant ordinary subject pronoun to every synthetic form.