unit 25 grammar[下学期]

课件22张PPT。Model verbs (情态动词）must be must have done
You have been traveling all day. You must be
very tired.
Look! There is a light on in Susan’s house. She
must be at home.
It’s too late, and I must be off now. I am sure that
my mother must be waiting for me at home.
The phone rang but I didn’t hear it. I
must have been asleep.Model verbs (情态动词）may / might /could be may / might /could have done
You are looking for Bob. Nobody is sure where
He is but you get some suggestions.
Mary said: “ He may be in the reading room.”
Mike said: “ He might be having lunch.”
Jane said: “ Ask Ann. She might know.”
Bob said: “ He might have gone back home.”
Model verbs (情态动词）can’t can’t / couldn’t have done
may (might) not may ( might) not have done
*You have just had lunch. You can’t be hungry.
*Jane walked past me without speaking. She can’t (couldn’t) have seen me.
* I’m not sure whether I can lend you any money. I
may not have enough.
*--- I was surprised that Sarah wasn’t at the meeting.
--- She might not have known about it.
Model verbs (情态动词）can / could…? can/ could … have done…?
--- Who can it be?
--- It may be the postman.
--- Can they have missed the bus?
--- Yes, they may have.
1. 快点。你妈妈一定在等我们呢。
2. 那位肯定就是你们的老师。
Put the following into EnglishHurry up. Your mother must be waiting for us.That man must be your teacher. 3. 外面很湿。刚才想必下过雨。
4. 你为什么显得这么疲倦？你可能昨晚又开夜车了。Put the following into English It’s wet outside. It must
have rained just now. Why do you look so tired? You
may have stayed up late last
night.Put the following into English5. 我觉得玛丽明天早上可能会来。
6. 今年暑假他们想去海南，不过也有可
能去上海。 I think Mary may come
tomorrow morning. They’d like to go to Hainan on
holiday this summer, but they
might go to Shanghai.7. 他们不可能出去，因为灯还开着呢。
8. 我们最好先打个电话。他可能不知道
我们要去那儿。Put the following into English They can’t have gone out
because the light is on. We’d better make a phone
call first. He may not know that we will go there.9. 今天早上他不可能在会上作过报告，
那时我在街上遇见过他。Put the following into English He couldn’t / can’t have
spoken at the meeting this
morning, for I saw him in the
street then.10. —你觉得这些饭菜怎麽样？
—好极了！我们不可能找到比这家更
好的饭店。Put the following into English —How do you like the food here?
—Excellent! We couldn’t / can’t
have found a better restaurant. 1. —Alice always gets the best grades in her class. Why?
—She ______ study very hard.
B. may C. can D. mightA.mustA.must选择题2. —I think this watch belongs to Jim.
—No, it _____ belong to him. He did
not come today.
A. must not B. may not
D. mightC. can’tC. can’t选择题选择题3. Don’t believe him. His story ____
be true.
A. must not B. can
C. mustD. may notD. may not选择题4. —She must have gone back to America.
—No, she _____ . I saw her in the
reading room just now.
A. had not B. must not
D. may notC. could notC. could not5. — Is the film on in the cinema now?
— It ____ be, but I’m not too sure.
A. can not B. must not
C. need notD. may notD. may not选择题6. ____ it be Liu Ling who comes here every day?
A. Must
C. May D. MightB. CanB. Can选择题选择题7. —I can not find my purse, have you seen it?
—No. You ____ it at home this
morning.
A. must leave B. can have left
C. must have left D. may leave选择题7. —I can not find my purse, have you seen it?
—No. You ____ it at home this
morning.
A. must leave B. can have left
C. must have left D. may leaveC. must have left选择题8. —What time are you going to get
back?
—I’m not sure. I ____ back at
lunch time.
A. might be B. must be
C. will be D. may have been选择题8. —What time are you going to get
back?
—I’m not sure. I ____ back at
lunch time.
A. might be B. must be
C. will be D. may have beenA. might be Model Verb
1. There is a voice at the door. Who ____ be?
must be B. must it C. can he D. can it
2. ---- I heard they went skiing in the
mountains last winter.
---- It_____ true because there was
little snow there.
A. may not be B. won't be C. couldn't be D.musn't be
3.Hurry up! Your mother _____ for you now?
must be waiting B. can be waiting
C. could wait D. must wait
4.Peter _____ come with us tonight, but he isn’t very sure yet.
A. must B. can C. may D. will DCAC 5? Mr. Smith ____ be in Berlin because I saw
him just a few minutes ago at the office.
A.mustn’t B. can’t C. needn’t D. may not
6.John _______ phone you. You’d better stay here
for some time.
A. can’t B. mustn’t C. may not D. might
7. It ____ outside, for people coming in are all so wet.
A.must rain B. will rain
C. must be raining D. will be raining.
8. Johnny, You ____play with the knife, you ____
hurt yourself.
A. won’t; can’t B. mustn’t; may
C. shouldn’t; must D. can’t; shouldn’t BDCB