section 11 Swam the good grammar
6 modal verbs: introduction
can, must, should
must
You must be home by eleven.
Must you go?
mustn't and needn't
We mustn't wake the baby.
have to
Do you have to teach small children?
had to, will have to
I didn't have to pay.
should
What should I tell John?
can and could
He can play the piano.
She couldn't write.
may and might
It may snow.
I might have a cold.
must/can't: certainty
She must be in.
He can't be hungry.
can and could: requests
Can you lend me a stamp?
can, could and may: permision
Can I use the phone?
shall in questions
What shall we do?
had better
You'd better take your umbrella.
would
Would you like a drink?
I'd like to be taller.
used to
I used to play the piano.
perfect modal verbs
I should have studied harder.
test yourself
modal verbs
perfect tenses grammar summary and pre-test
present perfect: forms
I have paid.
Has she forgotten?
finished actions: present perfect or simple past?
present perfect: news
We've found oil in the garden!
present perfect and simple past:
news and details
up to now (1)
How much?
How often?
already, yet and just
up to now(2)
I've been here since Tuesday.
up to now (3):
present perfect progressive
present perfect or
present perfect progressive?
simple past and present perfect: summary
present prefect and simple past:
revision exercises
past perfect
It had already begun when we arrived
test yourself perfect tenses