We use the gerund (-ing)
1 When the verb is the subject of a sentence.
- Reading on tablets and phones isn’t very good for your eyes.
2 After a preposition.
- I’m tired of waiting. Let’s go home.
3 After some verbs.
- I don’t mind waiting.
- She recommended visiting this museum.
Common verbs followed by a gerund
Some common verbs that are followed by gerund are: avoid, enjoy, finish, hate, keep, like, love, don’t mind, prefer, recommend, spend time, stop, suggest, etc.
The negative form of the gerund is not + -ing.
- He enjoys not having to wake up early at weekends.
Infinitive without to
We use the infinitive without to
1 After the auxiliary verb do, does, did in negative sentences and questions.
- He didn’t say anything.
- Does Tim work with you?
- I don’t believe you.
2 After modal verbs (will, can, must, should, might, may, etc.)
- You should come with us.
- I can’t play the guitar.
to + infinitive
We use the infinitive with to
1 After adjectives.
- It’s important to arrive early at the station.
2 To express a reason or purpose (why).
- I went to Madrid to visit some family.
- I need time to study for the exam.
3 After question words.
- I don’t know what to eat.
- I want to learn how to play the guitar.
4 After some verbs.
- Don’t forget to call me.
- She seems to be distracted.
Common verbs followed by to + infinitive
Some common verbs that are followed by to infinitive are: decide, forget, help, hope, learn, need, offer, plan, promise, remember, seem, try, want, would like, would love, would hate, would prefer, etc.
Negative form of to + infinitive
The negative form of to + infinitive is not to + infinitive.
- She decided not to enter the competition.