皆可表示推测,用
)情态
表示对现或将来的情况的推
I don't know where she is, she may be in Wuhan. )情态动词动词现在进行时。2+
表示现在或将来正在
At this moment, our teacher must be correcting our exam papers.
这
)情态
表
We would have finished this work by the end of next December.
明年十月底前我们很可
The road is wet. It must have rained last night.
地
)情态动
表
Your mother must have been looking for you.
你
)推测的否定
Mike can't have found his car, for he came to work by bus this morning.
迈克一定有找回他的车,因
注意:表示推测不示时态,其推测的程度不
表示推测的情态动词
表示
(Modals of Probability and Possibility)
1. 在英,表示对某件事物的
会用到以下情态动词,must, might, could, may, can’t, couldn’t.
例如:Look at the picture, what do you think it is?
(无论你认图表示什么,这都是一种
eg. It could be a donut. (它可能是个炸圈饼)
It might be a hat from above. 它可能是个从上面看的帽子。
It must be an eyeball. 它一定是个眼球。
2.
(1)20,,80, certain(Possible): could, might, may
You can use could, might, may to express possibility to show that you believe something is possible, but you are not very certain if it is true or not. You are making a guess. May shows that you are a little more certain
that something is true.
当你不确认事情是否是真实的,
用could, might, may来
如:Situation: He’s got a baseball hat on.
又如:Situation: She is wearing a white coat.
(2)90,certain (Probable): must
Use must to express probability (to show that you believe something is probably true. 如果你非
定是”
eg. Situation: He’s wearing a baseball hat. He’s carrying a baseball
glove.
(推测) He must play baseball.
注意:must有在肯定句中才表示判
和can。
must可表示我们对某事确有
如:
Jane’s light is on. She must be at home. She can’t be out. 简的
房间里开灯。她一定
Mary must have some problem: she keeps crying. 玛丽一定有什么问题:
她一直在哭。
There’s the doorbell. It must be Dick. 门铃响了。一定是迪克。
(3)100, certain(Certain):事实,推测,则不
If these are facts, you don’t use could might or must.
eg. Situation: It’s in the middle of a baseball game. He is throwing a ball to his teammate. He plays baseball.
3. 表示肯定的测,句式为:主语,情态动词,动
eg. 注意
(1)Jack could live here. (*情态动词后面必须用动词原形)
而不是Jack could lives here. (×)
(2)Alex might know him.
而不是Alex mights know him. (情态动词没有人称和数的变化)
(3)Shirley may be at home.
而不是Shirley maybe at home. (maybe不是情态动词,而是副词不能做谓语)
4. 表定的推测,句式为:
请注意表示否定
常的不
eg. That’s impossible! Tom couldn’t be in Hong Kong.
I saw him just a few minutes ago. He can’t be there.
表示推测的情态动词
U5语
在英语中,表示某事物的确定程度,即表
might,can’t , could, couldn’t , must ;
一. can和could的区别和用法
1.can表示和脑力方面的能力,或
例如:Can you speak English? What can I do for you? Can you make a cake?
can用在否定疑问句中时有时表示
例:Where can he be? Can the news be true?(在日
2. couldcan的过去式,表示去有过的能和可能性,还有怀疑和不肯定思(在否定和
could用来提,
例如:Could I speak to Mr. Smith, please? Could you help us carry this box, please?
二. might是may
1. may的用法:
a. 表示””或”请求”。 例
注意: may表
例如:—May I take this book out of the reading-room?—No,you mustn't.不行。
b. 表示说的猜测,认为某
例如:He may know the answer. Tomorrow I may go shopping.
c. may用在感叹句
例如:May you succeed.(祝你成功。) May you have a pleasant journey.(一路平安。)
2. might的用法:
a. might代替may,表示现在时
例如: He might not come today. Might I take a suggestion?
b. might用来表
例如:You might pay more attention to spoken English.
三. must与have to的区别
have to强调观要,must着重说明主
We had to be there at ten.我们得在十点钟到那里。
We'll have to reconsider the whole thing.这一切我将不得不重新加以考虑。
有时两者都可以用,意差
must表示说话人对事物推测时候要注它比may肯定得多,相当于汉语的”一定”或”准是”。(只有在肯定句能这
在回答must引起问题时,果是
例如:—Must we hand in our exercises today?—No,you needn't.
must not否定形式则表示”不
例如:You mustn't play on the road. You mustn't eat anything until you see the doctor.
表示推测的情态动词
C-
情态动词的语法特征
1) 情态动词能示正在发生或已经发生
2) 情态动词
3) 情态动词没有谓
常见的情态动词有:can (could) ,may (might), must ,shall (should), will (would), need等,
另外,have to、had better也当
语法梳理
表示推测的情态动词
一.肯定的推测
must, should, may(might) 或could(一般不用can),其中,must的语气最强,译为“一定,
准是,想必是”;may(might) , could的语气最弱,译为“也许”、“可能”。如:
The computer doesn’t work. There must be something wrong with it. 这台计算机开不了机。一
定是有什么毛病了。
It should be fine tomorrow. 明天很可能天晴。
If you look at the moon, you may/might have many questions to ask. 如果你看看月亮,或许会有
许多问题要问。
This project could create 5,000 new jobs. 这项新工程可能给5千人带来新工作。
二.否定的推测
表示可能但不是肯定无疑,用should not(恐怕不
not,译为“可能不,许不”;否定语气较强时,则
Don’t worry, your father may not have been hurt seriously. 别急,你父亲也许伤得不厉害。
He might not be in England. 他或许不在英国。
There shouldn’t be any difficulty about getting you a visa. 给你弄个签证恐怕不会有什么困难。
After what had happened he could not continue to work there. 鉴于所发生的事情,他不可能继
续在
He can’t be more than thirty. 他不可能在三十以上。
三.疑问句中的推测
一般用can或could。如:
What can he mean? 他可能是什么意思呢?
四.后接的动词形式
对现在或将来的推般接动词原形;若表示
在分词;若要表示过的情况进行推测时,用“
You must know Diana surely. 你准会认识戴安娜。
You must be joking. 你准是在说笑话。
Someone must have been smoking here. 一定有人一直在这里抽烟。
He must have arrived already. 他一定已经到了。 能力提升
1.(10安徽32)Jack described his father, who _______a brave boy many years ago, as a
strong–willed man
A. would be B. would have been C. must be D. must have been
2.(10湖南23)You _______buy a gift, but you can if you want to.
A. must B. mustn't C. have to D. don't have to
3. (10江西23) I have told you the truth. ______ I keep repeating it?
A Must B Can C May D Will
4. (10山东25)I_______ have watched that movie —it’ll give me horrible dreams.
A. shouldn’t B. needn’t C. couldn’t D. mustn’t
5. (10天津9)Mark _______have hurried. After driving at top speed, he arrived half an hour
early.
A. needn’t B. wouldn’t C. mustn’t D. couldn’t
6. (10四
—I'm afraid not.
A. Will B. May C. Must D. Need
7. (10全国Ⅰ29)Just be patient .You ______ expect the world to change so soon .
A. can’t B. needn’t C. may not D. whether
8. (10江苏25) —I haven’t got the reference book yet, but I’ll have a test on the subject next
month.
—Don’t worry. You______ have it by Friday.
A. could B. shall C. must D. may
9. (?陕西 23) May I take this book out of the reading room?
No, you _______. You read it in here.
A. mightn’t B. won’t C. needn’t D. mustn’t
10. (10全
A. can’t B. mustn’t C. shouldn’t D .needn’t
11. (10湖北79) It’s said that they have swum to the island from the continent, but
they_____________________(不可能做到)because the ocean in between is too wide. (do)
12(10辽宁26)Doctors say that exercise is important for health, but it _______ be regular
exercise.
A.can B.will C.must D.may
13. (10北京23) ---Good morning. I've got an appointment with Miss Smith in the Personnel
Department.
--Ah, good morning. You _______be Mrs. Peters.
A. might B. must C. would D. can
14. (10浙江17)―You ____ have a wrong number,‖ she said. ―There’s no one of that name here.‖
A. need B. can
C. must D. would
15. (10上海29)---Sorry, Professor Smith. I didn't finish the assignment yesterday.
---Oh, you _______have done it as yesterday was the deadline.
A. must B. mustn't C. should D. shouldn't
16. (10安
A. was busy B. is busy C. had been busy. D. will be busy
17. (10湖
A. followed B. should follow C. had followed D. would follow
18. (10天津15)John went to the hospital alone. If he_______me about it, I would have gone
with him.
A. should tell B. tells C. told D. had told
19(10江苏34)George is going to talk about the geography of his country, but I’d rather
he_______ more on its culture.
A. focus B. focused C. would focus D. had focused
20.(陕西15)
If we ___ the other road, we might have arrived here in time for the meeting.
A. take B. had taken C. took D. have taken
高三英语作文万能句子-表示推测
?精品文档?
高三
perhaps Straighten him out; he perhaps misunderstood what I said. 向他解释清楚,他也许误解
了我的意思。 Perhaps I shall come across him in France. 也许我会在法国遇见他。 高三英语作文万能
句子:表示推测
presumably
No reply from him yet; presumably he hasn’t received
my letter.
他没
Presumably you could tell that by looking at her body,
as well?
你也可通过看一眼她的
probably
He will probably come in for a good sum of money when his uncle dies.
他叔
perhaps
Straighten him out; he perhaps misunderstood what I
said.
向他释清楚,他也
Perhaps I shall come across him in France.
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