情态动词. 1.can/could may/might must need dare should/ought to will/would shall. 2. Can---can’t may---mustn’t /had better not must---needn’t /don’t have to need---needn’t/ 肯定 must. 3 .shall(1) 一、三人称，表征求对方意思。 （ 2 ）二、三人称，表说话人的意愿。
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1.can/could may/might must need dare should/ought to will/would shall
2. Can---can’t may---mustn’t /had better not
must---needn’t /don’t have to
Eg, You shall do as I say
If you children won’t do as I tell you, you shan’t
go to the party..
dare ,need 可作及物动词。
Eg, I wonder how he dared to say such a thing
. You don’t need to do it yourself..
5. be able to=manage to do /succeed in doing
used to 还可以用来表示状态、情况和动作。
Eg. When we were children ,we ________________
go to skating every winter.
I _______ have an old jeep.
1.can’t/couldn’t do 对现在的否定推测
can’t/couldn’t have done对过去的否定推测
could have done本来可以、差点就要
2.should/ought to do
should/ought to have done 过去本应该做却没做
4。needn’t have done过去没必要做某事
5.must/may/might/could/can’t be doing
2. Johnny, you ____ play with the knife,you _____
A.won’t/can’t B.mustn’t/may C.shouldn’t/must
3.The fire spread though the hotel very quickly but
everyone _______ get out.
A.had to B. would C.was able to D. could
4.—When will I come for the photos?I need them
---They______be ready by 12:00.(1998)
A.can B. should C.might D. need
---Oh,did you? You ______with Barbara.
A. could have stayed B. could stay
C. would stay D. must have stayed
6.Are you coming to Jeff’s party?
---I am not sure. I______go to the concert instead.
A.must B.would C.should D.might
7.Sorry, I’m late. I______have turned off the alarm
clock and back to sleep again.
A.might B. should C. can D. will
8.—Write to me when you get home.
A. I must B.I should C.I will D.I can
9.If a man _____succeed, he must work as hard
as he can.
A. will B. is to C. is going to D. should
10.When he was there,he ____go to that coffee shop
at the corner after work every day.
A. would B. should C.had better D. might
11.Sir, you ____ be sitting in this waiting room.
It is for women and children only.
A.oughtn’t to B. can’t C.won’t D. needn’t
12.You can’t imagine that a well-behaved gentleman
______be so rude to a lady.
A.might B. need C.should D. would
________so much fried chick just now.
A.shouldn’t eat B.mustn’t have eaten
C.shouldn’t have eaten D. mustn’t eat
14.—Could I call you by the first name?
A .will B. could C.may D. might