Sentence-final focus

Czech is often said to have 'free word order', but this is a widespread myth. While you can move words around without changing who did what (because case endings preserve the grammatical roles), changing the word order changes the focus and the specific question the sentence is answering. A great way to determine what goes at the end of a Czech sentence is the Question Test (Otázkový test). The piece of information that directly answers the implied or explicit question must be placed at the very end. For example, 'Kdo čte knihu?' (Who is reading the book?) -> 'Knihu čte Petr.' vs. 'Co dělá Petr?' (What is Petr doing?) -> 'Petr čte knihu.'

Czech sentences naturally flow from 'old information' (already established context) to 'new information'. The sentence-final focus (jádro výpovědi or réma) is a pragmatic position at the very end of the clause. Almost any sentence constituent—a subject, object, verb, or adverbial—can be placed here to receive the main sentence stress, with the notable exception of unstressed clitics.

• Neutral vs. Emotive: Placing the focus at the end is the neutral, objective way to emphasize something in Czech (objektivní pořádek slov). Moving the focus to the beginning of the sentence (e.g., PETR to okno rozbil! (PETR broke the window!)) is marked and creates subjective word order (subjektivní pořádek slov). This is used for strong contrast (e.g., KÁVU si dám, ale čaj ne. (I'll have COFFEE, but not tea.)) or in highly emotional speech.
• The Intonation Habit: English speakers often incorrectly keep SVO order and loudly stress a word in the middle of the sentence. While end-focus is the neutral default in Czech, placing contrastive stress on a word in the middle of a sentence (in situ focus) is actually quite common in spoken Czech for contrast. However, as a learner, becoming confident with moving the target word to the end and letting the natural sentence melody do the work is crucial for sounding natural in neutral contexts.
• The Clitic Rule: Unstressed words like se, si, mi, or ho cannot act as the focus or bear the main sentence stress. While a sentence can physically end with a clitic if it's very short (e.g., Bojím se. (I am afraid.)), clitics cannot occupy the focus slot. They generally stay in the second position. If you need to emphasize a pronoun at the end of a sentence, you must use its long/strong form (e.g., Vidím TEBE (I see YOU) instead of Vidím tě (I see you)).
• English Clefts: Avoid translating English cleft sentences literally (e.g., 'It was Petr who...') without considering the nuance. Because English clefts are highly contrastive, moving the word to the end of a neutral Czech sentence is not enough to capture the emphasis. To replicate the specific flavor of a cleft sentence, Czech frequently pairs end-focus (or marked initial focus) with focus particles like právě, zrovna, or jen placed immediately before the focused word (e.g., To okno rozbil právě Petr. (It was exactly Petr who broke the window.)). Alternatively, you can use the specific Czech cleft construction je to X, kdo.