2024届高考英语语法复习情态动词课件（23张）

(共23张PPT)
modal verbs i
情态动词 I
一、情态动词概念
定义：
情态动词表示说话人的某种感情或语气，对某一动作或状态的某种态度。表示“需要、可以、必须、应当”等。
语法特征
1. 和动词原形构成复合谓语 (情+do/be done)
2. 没有人称，数的变化，但有些情态动词（如can/could, will/would, may/might）有一般式和过去式的变化。
二、情态动词用法梳理
一、情态动词表能力（能够）
二、情态动词表请求、允许（可不可以/请）
三、情态动词表必要性（必须/需要）
四、表倾向/习惯性(总是/总要/常常）
五、情态动词表推测（可能/一定/一定不可能）
六、特殊用法和结构
can（现在能力）/could （过去能力）
对比：be able to
(时态多，强调成功做成）
用法一、情态动词表能力（能够）
1. Tom comes from Australia; he _______ speak English very well.
练习（P12活学活用）
can
will/would
Will /would you (please) do sth.
Would you like to do sth.
can/could
Can/could you (please) do sth.
may/might
May/Might I do sth.
Shall (一、三人称）
Shall I/he/she/they do sth.
（我要...吗？/你要他...吗？）
用法二、情态动词表请求、允许（可不可以/请)
2. I heard you bought a new book. ________ I have a look
5._________ you like to have dinner with me
练习（P12活学活用）
May/Could
Would
必须
must
=have to (不得不)
需要
need
不需要
needn’t
=don’t have to do=don’t need to do
用法三、情态动词表必要性（必须/需要）
mustn’t 禁止
7. When you cross the street, you _________ be careful with the passing cars.
练习（P12活学活用）
must
四、表倾向/习惯性(总是/常常）
In European countries, people will usually decorate churches.
Most ancient festivals would celebrate the end of cold weather.
will 一般倾向或习惯性动作
would 过去的习惯性动作或倾向=used to do sth.
10. When he was young, he ________ climb the small hill every morning.
练习（P12活学活用）
would
五、情态动词表推测（可能/一定/一定不可能）
一定
must (be)
可能
should/ought to can/could may/might
一定不可能
can’t(be)
＞
＞
6. Jack set out at seven in the morning; he_________ be here now.
8. It ________ be his mother, for she has been ill at home for a long time.
9. I ___________ come to the party with you,but I am not sure.
练习（P12活学活用）
should
can’t
may/might
六、特殊用法和结构
may/might as well
You might as well tell us the truth.
can never/can‘t be too + adj.
You can never be too careful in the street.
suggest/advise/command that sb.________(do) sth.
modal verbs i
情态动词 II
情态动词用法梳理
一、情态动词表能力（能够）
二、情态动词表请求、允许（可不可以/请）
三、情态动词表必要性（必须/需要）
四、表倾向/习惯性(总是/总要/常常）
五、情态动词表推测（可能/一定/一定不可能）
六、特殊用法和结构
1. She think he ______(可能) be here. But I think he ______(不可能）be here，for he has gone to Shanghai.
2. You _________________ (不准来这儿) without permission.
3. You ______________________ (应当去照顾) your sister.
4. ____________(可以) I have a look at your skirt
may
can’t
should/ought to take care of
May / Can
mustn’t come here
Translation
情态动词用法梳理
七、既可以做情态动词也可以做实义动词
八、表示对过去的推测
You needn’t go there now.
We don’t need to tell him the truth.
He needs our help.
用法七、既可以做情态动词也可以做实义动词
need do sth./needn’t do sth.
(无时态/单复变化）
need/don’t need sth./to do sth.
(有时态/单复变化）
need to be done=need doing
How dare you talk to me like that
How do you dare to talk to me like that
用法七、既可以做情态动词也可以做实义动词
dare (not) do sth./dared (not) do sth.
dare to do sth./don’t dare to do sth.
(有时态/单复变化）
Lily has worked for a long time, so she must be sleeping now.
From what you said, she must have told you everything.
I think he can’t be here，for he has gone to Shanghai.
Mr. Smith can’t have gone to Beijing, for I saw him just now.
You should try your best to study.
You should have done your homework, but you didn’t.
You need tell me everything about him.
You needn’t have told them about it.
用法八、表示对过去的推测
comparison
must do/be must have done
can’t do/be can’t have done
can do sth. could have done
should do should have done
needn’t do needn’t have done
might/may do might/may have done
必须/肯定(是)
(过去)一定做过某事
不会/不可能(是)
(过去)不可能做过
会/可能(是)
(过去)可能做过/本能够做某事
应该...
(过去)本应该
不需要
(过去)本不需要
可能...
(过去)可能做过某事
12. The road is wet. It 　　 　　　　(rain) last night.
13. The door was locked. She 　　 　　　　(not be) at home.
14. They are playing basketball. They　　 　　　　(finish) their homework.
15. The plant is dead. I 　　　 　　(give) it more water.
16. I saw him just now so he 　 　　　　　(not go) abroad.
练习（练习册P5）
must have rained
can’t/couldn’t have rained
must have finished
should have given
can’t/couldn’t have gone