Употребление инфинитива

To infinitive

To infinitive is used:

• To express purpose

Ex. She went out to buy some milk.

• After certain verbs ( advise, agree, appear, want, decide, expect, hope, promise, refuse, etc.)

Ex. He wanted to go home.

• After certain adjectives (happy, angry, lucky, glad, etc.)

Ex. He was glad to see her.

• After question words (where, how, what, who, which, but not after why)

Ex. Do you know where to meet him ?

• After would like, would love, would prefer (to express specific preference)

Ex. I would like to drink some milk.

• After nouns

Ex. It’s a pleasure to see you.

• After too/enough constructions

Ex. He is too short to reach the top shelf .

He is not tall enough to reach the top shelf.

• with it+be+adjective+of+object

ex. It was nice of him to remember my birthday.

• With only to express negative results

Ex. He called me only to say that he would be late.

The infinitive without to is used:

• After modal verbs

Ex. You must study English.

• After had better/ would rather

Ex. I would rather have stayed in yesterday .

• After make, let, see, hear, feel + object

Ex. I made him apologize.

But in the passive form:

Be made/be heard/be seen+ to infinitive

Ex. He was made to apologize.