What Is the Infinitive?
The infinitive is a verb form that names an action in a general way. It is not linked to a subject like I, she, or they. In English, it is often written with to + base verb (for example, to eat).
Simple Example
- To learn is important.
- I want to learn English.
The Elements of the Infinitive
In English, the infinitive usually has two main parts. But sometimes it appears without to.
| Element | What it is | Example |
|---|---|---|
| to (marker) | A small word that often introduces the infinitive | to go, to study |
| Base verb | The basic form of the verb (no -s, no -ed, no -ing) | go, study |
| Zero infinitive (no to) | The infinitive without to (used in some patterns) | can go, make me laugh |
Common Types and Uses
1) The “to” Infinitive After Many Verbs
Many verbs are followed by to + verb.
- I want to eat.
- She decided to travel.
- They hope to win.
| Verb | Example |
|---|---|
| want | I want to sleep. |
| need | We need to leave. |
| decide | He decided to call. |
| hope | They hope to visit. |
2) The Infinitive to Express Purpose
You can use the infinitive to say why you do something.
- I went to the store to buy milk.
- She studies every day to improve her English.
- We saved money to travel.
3) The Zero Infinitive (Infinitive Without “to”)
Some structures use the infinitive without to.
A) After Modal Verbs
- I can swim.
- You should study.
- They must leave now.
B) After “make” and “let”
- That movie made me cry.
- My parents let me go out.
C) After Verbs of Perception (sometimes)
- I saw her cross the street. (complete action)
- I saw her crossing the street. (action in progress)
Why the Infinitive Is Important
- It helps you build many common sentences: want to, need to, decide to.
- It helps you express goals and reasons: to learn, to help, to save money.
- It is essential for clear, natural English in speaking and writing.
Comparison with Other Languages
French also has an infinitive. It is the dictionary form of the verb, like manger or aller. English is similar, but English often uses to.
| Idea | French | English |
|---|---|---|
| General action | Manger est important. | To eat is important. |
| After “want” | Je veux manger. | I want to eat. |
| Purpose | Je suis venu pour apprendre. | I came to learn. |
| With a modal | Je peux nager. | I can swim. (no “to”) |
Common difficulty for French speakers: In English, you often need to after many verbs (want to, need to). But you do not use to after modal verbs (can, must, should).
Complete Example
Here is a short text with several infinitives.
- Today I decided to wake up early.
- I wanted to go for a walk to get fresh air.
- I can meet my friend later, but I must finish my homework first.
- My friend let me choose the restaurant.
Conclusion
The infinitive is a basic and very useful verb form in English. You often use to + base verb, and sometimes you use the base verb alone. Learning common patterns with infinitives will make your English clearer and more natural.
Sources
- Huddleston, Rodney & Pullum, Geoffrey K. (2002). The Cambridge Grammar of the English Language. Cambridge University Press.
- Swan, Michael (2016). Practical English Usage (4th ed.). Oxford University Press.
- Quirk, Randolph; Greenbaum, Sidney; Leech, Geoffrey; Svartvik, Jan (1985). A Comprehensive Grammar of the English Language. Longman.