Page 117 - Basic English Usage

117 152

to talk about possession, relationships, and other states:
I’ve got anew car.
Have you got any brothers or sisters?
Do you often have headaches?
to talk about actions:
I'm going to have a bath.
We're having a party next weekend.
to talk about obligation (like must):
| had to work last Saturday.
to talk about causing things to happen:
He soon had everybody laughing.
i must have my shoes repaired.

The grammar is not the same for all of these different meanings of have.
For details, see the next five sections.
For contractions (/'ve, haven't etc), see 90.
For ‘weak forms’ (/av/ etc), see 358
For had better + infinitive , see 148.

152 have: auxiliary verb

have + past participle |

We use have as an auxiliary verb to make ‘perfect’ verb forms.
Have you heard about Peter and Corinne?
(present perfect: see 243; 244)
| realized that | had met him before.
(past perfect: see 245)
We'll have been living here for two years next Sunday.
(future perfect: see 139)
| would have told you, but | didn’t see you.
(perfect conditional: see 88)
Id like to have lived in the eighteenth century.
(perfect infinitive: see 175)
You should have written to me.
(modal auxiliary with perfect infinitive: see 202.3)
Having been there before, he knew what to expect.
(perfect participle)

2 Like all auxiliary verbs, have makes questions and negatives without do.
Have you heard the news? (NOT De-yeuhave heard... ?)
ther:
| haven’t seen them. (NOT +den’thave-seern )