2022年中考英语知识点学习情态动词课件（共有PPT22张）

(共22张PPT)
情态动词can may must
情态动词
不会用？
不懂？
分不清楚？
They can dance!.
Warm-up
They can sing!
简介
They can ride a bike.
He can not drive a car.
can+动词原形（无人称和数的变化）
情态动词Can（could）
1.表示能力（体力，知识，技能等）。
Mary can speak three languages.
= Mary_____speak three languages.
用 法：
（1）.can只有一般现在时一般过去时。I will not be able to come this afternoon.
(2).表示经过努力才得以做成某事 ----- be able to
区 别：
2.表示请求，允许
---- Can I go now
----Yes,you can/No,you can not.
用 法：
3.表示可能性猜测
He can’t (couldn’t) have enough money for a new car.
用 法：
4.表示对现在动作或状态的猜测，主要用于否定句和疑问句中或感叹句中:
He can’t (couldn’t) be over sixty. 他不可能超过六十岁。
用 法：
5.could表示比can更委婉客气的提出问题或陈述看法，指的是现在时间。
Could you lend me a hand 帮我一把好吗？
用 法：
课堂练习：
1. "__________ I take it out " "I'm sorry, you __________." (☆☆☆☆)
A. Could ...couldn't B. Might...might not
C. Could...can D. May...can
2.—Listen!Helen is singing in the next room. —It_____be Helen. She has gone to Beijing.(☆☆☆☆)
A.can‘t B.mustn’t C.may D.should
3. — __________I smoke here (☆☆☆)
— No, you mustn’t.
A. Can B. May C. Must D. Need
简介
---May I visit Lucy on Sunday, Mum
---- Yes, you may. .
情态动词May(might)
1）表允许，询问或说明一件事可不可以做，might指过去时间；但在疑问句中might也可指现在时间，语气比may更委婉。
May (Might) I ask for a photo of your baby
在回答以may引起的问句时，肯定回答是一般可仍用may,或Yes, please. / Certainly./Sure./Of course. ；
否定回答根据说话人的语气由强到弱分别选用: must not(mustn’t)（禁止）/ had better not（最好别）/ may not（不行）
用 法
用 法：
2) may表可能,但所表示的可能性不如can所表示的那样肯定。might可以指过去时间，也可以指现在时间，但语气更加不肯定。
He may be at home.
他可能在家。
They might be having a meeting, but I’m not sure.
他们有可能在开会，不过我不肯定。
简介
情态动词Must（have to )
用 法：
1）表示 “必须”（主观看法）时，用于肯定句或疑问句；用于否定句时表示“禁止”。
We must do everything step by step.
我们一切都必须循序渐进地做。
You must get home before 9:00.
用 法：
2）表示揣测。意为“想必、准是、一定”等，只用于肯定句。
He must be ill. He looks so pale. 他准是病了。他的脸色苍白。
3)must的疑问句，肯定回答用must， 否定回答用needn’t或don’t have to。
课堂练习:
1. __________ to have lunch with us today (☆☆☆)
A. Do you likes B. Would you like
C. Will you liked D. Have you liked
2. --Is John coming by train
--He should, but he __________ not. He likes driving his car. (☆☆☆☆)
A. must B. can C. need D. may
3. Peter __________ come with us tonight, but he isn't very sure yet. (☆☆☆)
A. must B. can C. may D. will
4. I thought you __________ be hungry, so I have brought you some cakes. (☆☆☆)
A. may B. might C. can D. could
5. Come on! We __________ hurry because there isn't much time left. (☆☆☆)
A. may B. must C. can D. need
课堂练习:
6.—Would you like to drink some juice
— Thanks._________,but I have drunk a lot if tea.
A.I'd love to B.I think so C.I'm afraid not D. I don't think so.
7.—May I smoke here
—No, you______! Look, there is a “NO SMOKING”sign here.
A.may B.may not C.needn't D.mustn't
8.—Listen!Helen is singing in the next room.
—It_____be Helen. She has gone to Beijing.
A.can't B.mustn't C.may D.should
9.—What do drivers do when the traffic lights turn red
—They______stop and wait till the green light.
A.must B.can C.may D.need
10. She ________ know the answer， but I'm not sure.
A. maybe B. may be C. may D. must
A
can/could
B
may/might
C
must
课堂小结
HOMEWORK:
1.-You must come back every month. -Yes， I ________.
A. will B. must C. should D. can
2. She ________ know the answer， but I'm not sure.
A. maybe B. may be C. may D. must
3. - Must we clean the room right now？ - No， you____. You _____clean it after lunch.
A. needn't；may B. needn't;must C. Mustn't； can D. mustn't；may
4. John________ come to see us tonight， but he isn't very sure yet.
A. may B. can C. has to D. must
5. Children ________ play with fire.
A. mustn't B. can't C. shouldn't D. needn't
6. -________ I come in， Mr Green？ -Yes,come in， please.
A. Must B. Need C. Will D. May
7. -Must I finish the work today？ -No， you ________. You ________ finish it tomorrow.
A. mustn't； may B. can't； can C. needn't； may D. needn't； must
8. John___ come to see us tonight, but he isn't very sure yet.
A. may B. can C. has to D. must
9.They ___ do well in the exam.
A. can be able to B. be able to C. can able to D. are able to
10.-May I take this book out -No, you___.
A. can't B. may not C. needn't D. aren't
You are the best!