Use can,could,may,will,would to ask for permission or requests.
you give me your dictionary?
can
could
will
you help me?
may
could
would
I pay by credit card?
can
could
may
you have a cup of tea?
could
will
can
we go home?
could
will
can
I take your mobile?
could
can
will
you help me?
would
can
may
I eat this apple?
can
may
will
we do an exercise 2?
can
will
may
B: Yes, it is. If it b) was frozen, we could have gone skating.
2 A: Haven't you got enough money for a holiday?
B: Oh yes. I've got some saved up b) in case I suddenly need it.
3 A: What are you going to do next year?
B: I wish I a) knew the answer to that question.
4 A: These figures are too complicated to work out in your head.
B: Yes, if b) only we had a calculator.
5 A: What are you doing later this afternoon?
B: Oh, b) in case the game finishes, I'll go home, I expect.
6 A: Do you think I should take the job?
B: You shouldn't do anything c) unless you think it's the right thing to do.