THE ZERO INFINITIVE
The zero infinitive is used:
- after most auxiliaries (e.g. must, can, should, may, might)
- after verbs of perception, (e.g. see, hear, feel) with the pattern verb + object + zero infinitive
- after the verbs 'make' and 'let', with the pattern make/let + object + zero infinitive
- after the expression 'had better'
- after the expression 'would rather' when referring to the speaker's own actions
- She can't speak to you.
- He should give her some money.
- Shall I talk to him?
- Would you like a cup of coffee?
- I might stay another night in the hotel.
- They must leave before 10.00 a.m.
- He saw her fall from the cliff.
- We heard them close the door.
- They saw us walk toward the lake.
- She felt the spider crawl up her leg.
- Her parents let her stay out late.
- Let's go to the cinema tonight.
- You made me love you.
- Don't make me study that boring grammar book!
NOTICE that the 'to-infinitive' is used when 'make' is in the passive voice:
- I am made to sweep the floor every day.
- She was made to eat fish even though she hated it.
- We had better take some warm clothing.
- She had better ask him not to come.
- You'd better not smile at a crocodile!
- We had better reserve a room in the hotel.
- You'd better give me your address.
- They had better work harder on their grammar!
Note: this is ONLY when referring to the speaker's own actions - see 'would rather' in section on Unreal past.