Infinitive as Subject

Level 3

Lerni, paroli and legi can start a sentence.

How It Works

SubjectAfter estas
Lerni lingvojnestas interese.
Legi leterojnestas agrable.
Paroli Esperantonestas plezuro.

The infinitive stands for an action, not a thing, so the word that describes it is an adverb: interese, agrable, bone. A noun like plezuro says what the action is.

A plural noun after the infinitive does not make the describing word plural, because the describing word goes with the action: Danci kun amikoj estas bonege, not bonegaj. The infinitive keeps its object, with -n if the object needs it. You may also put estas first: Estas agrable legi leterojn. The meaning is the same. The tense shows only on estas: Legi estis agrable.

Examples (5)

  1. Lerni lingvojn estas interese.

    Learning languages is interesting.

    Interese ends in -e because it describes an action.

  2. Paroli Esperanton estas plezuro.

    Speaking Esperanto is a pleasure.

    Plezuro is a noun, and Esperanton keeps its -n.

  3. Legi leterojn de amikoj estas agrable.

    Reading letters from friends is pleasant.

    Agrable describes the action of reading.

  4. Resti hejme estas malfacile por Kofi.

    Staying at home is hard for Kofi.

    Por Kofi shows who finds it hard.

  5. Danci kun Ana estas bonege.

    Dancing with Ana is great.

    Bonege describes the dancing, not Ana, so it ends in -e.

Common Mistakes

  • Using the adjective after an infinitive subject.

    Lerni estas bona.
    Lerni estas bone.

    An action is described with -e, not -a.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

Infinitive as SubjectLevel 3

Learn This First

An infinitive can be the subject of estas.

Learn Next

Patterns that build on this one.