外研版（2019）必修 第二册Unit 2 Let's celebrate! Using language 课件(共12张PPT)
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| 名称 | 外研版（2019）必修 第二册Unit 2 Let's celebrate! Using language 课件(共12张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 91.8KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-03-25 18:51:30 | ||
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文档简介
(共12张PPT)
情态动词
can 能够
could 能够
may 可能
must 必须
should 应该
have to 不得不
need 必须
情态动词后面接动词原形！
I can/ am able to swim.
I could climb a tree when I was a child.
can/could 用于疑问句,征求意见,could 语气更加委婉
Can I open the door
Could I borrow your pen
can 表示现在的能力
could表示过去的能力
can, could表示能力，“能够”+动词原型
must “必须” mustn’t 禁止
You must finish the homework today.
You mustn’t in the shopping mall.
不必须 don’t have to needn’t do don’t need to
Must I finish the homework today
No, you don’t have to./ No you needn’t.
should 应该
You should finish your homework.
have to 表示“必须，不得不” 否定形式don't have to表示“不必”
They had to put off the sports meeting because of the bad weather.
You don't have to knock-just walk in.
need “需要，有必要”，
情态动词 后面接动词原形
You needn't finish that work today.
以must开头的一般疑问句，肯定回答用must，否定回答用needn't
Must I finish the homework today Yes, you must./ No, you needn’t.
实义动词：有人称和数的变化，
need（s）to do sth.某人需要做某事
I need to finish my homework today.
sth. need（s）doing/to be done 某事/某物需要被做某事
This shirt needs washing. / This shirt needs to be washed.
这件衬衫该洗了。
1. You ___ buy a gift, but you can if you want to.
A. must B. mustn’t
C. have to D. don’t have to
2. When I was young, I was told that I ______ play with fire.
A. wouldn't B. needn't C. mustn't D. daren't
must表示肯定推测，可能性最强，只能用于肯定句
That must be my pen.
can /could 表示否定推测，用于否定句
You can’t be hungry already — you had lunch only two hours ago!
must should/ought to can/could may/might
＞
＞
＞
情态动词表推测
should / ought to表示推测
根据经验的推测，“应当、应该”
e.g. You photos should be ready by 12:00.
表示“竟然”，带有感彩。
e.g. It is strange that you should like him.
may/ might表示推测
He may win the prize
1. That be Ann’s husband, for I am sure that he doesn’t wear glasses.
A. can’t B. may not
C. mustn’t D. needn’t
2. - Good morning. I got an appointment with Miss Smith yesterday.
- Ah, you ______ be Mr. Peter.
A. might B. must C. would D. can
3. What do you mean, there are only ten tickets There ______ be twelve.
A. should B. would C. will D. can
must have done
He looks so tired. He must have worked all night.
can/can’t have done
He can’t have finished the work. I saw him played computers last night.
could/couldn’t have done
You could have done better.
should/ shouldn‘t have done
You shouldn’t have called me yesterday. You disrupted my sleeping!
needn’t have done
You needn’t have called the police.
情态动词+have done：表示对过去发生的事进行推测
一定做了…
可能/不可能做了…
本可以做…（但没做）；本不可以做…，但做了
本不必做，而做了…
本应该做…（但没做）;本不应该做…，(但做了)
--- Where is Mary
--- She ____ in the library.
A. should be B. must be C. can be D. must have been
2. His room is dark. He must ____ to bed.
A. go B. be going C. have gone D. have been gone
--- Will your father stay home tonight
--- I’m not sure, He ____to work.
A. must go B. can go C. may go D. could go
4.There was plenty of time. She ____ worried or hurried.
A. mustn’t have B. shouldn’t have C. must be D. needn’t have
5. The flower is dead. I ____ it more water.
A. will give B. would have given C. must give D. should have given
情态动词
can 能够
could 能够
may 可能
must 必须
should 应该
have to 不得不
need 必须
情态动词后面接动词原形！
I can/ am able to swim.
I could climb a tree when I was a child.
can/could 用于疑问句,征求意见,could 语气更加委婉
Can I open the door
Could I borrow your pen
can 表示现在的能力
could表示过去的能力
can, could表示能力，“能够”+动词原型
must “必须” mustn’t 禁止
You must finish the homework today.
You mustn’t in the shopping mall.
不必须 don’t have to needn’t do don’t need to
Must I finish the homework today
No, you don’t have to./ No you needn’t.
should 应该
You should finish your homework.
have to 表示“必须，不得不” 否定形式don't have to表示“不必”
They had to put off the sports meeting because of the bad weather.
You don't have to knock-just walk in.
need “需要，有必要”，
情态动词 后面接动词原形
You needn't finish that work today.
以must开头的一般疑问句，肯定回答用must，否定回答用needn't
Must I finish the homework today Yes, you must./ No, you needn’t.
实义动词：有人称和数的变化，
need（s）to do sth.某人需要做某事
I need to finish my homework today.
sth. need（s）doing/to be done 某事/某物需要被做某事
This shirt needs washing. / This shirt needs to be washed.
这件衬衫该洗了。
1. You ___ buy a gift, but you can if you want to.
A. must B. mustn’t
C. have to D. don’t have to
2. When I was young, I was told that I ______ play with fire.
A. wouldn't B. needn't C. mustn't D. daren't
must表示肯定推测，可能性最强，只能用于肯定句
That must be my pen.
can /could 表示否定推测，用于否定句
You can’t be hungry already — you had lunch only two hours ago!
must should/ought to can/could may/might
＞
＞
＞
情态动词表推测
should / ought to表示推测
根据经验的推测，“应当、应该”
e.g. You photos should be ready by 12:00.
表示“竟然”，带有感彩。
e.g. It is strange that you should like him.
may/ might表示推测
He may win the prize
1. That be Ann’s husband, for I am sure that he doesn’t wear glasses.
A. can’t B. may not
C. mustn’t D. needn’t
2. - Good morning. I got an appointment with Miss Smith yesterday.
- Ah, you ______ be Mr. Peter.
A. might B. must C. would D. can
3. What do you mean, there are only ten tickets There ______ be twelve.
A. should B. would C. will D. can
must have done
He looks so tired. He must have worked all night.
can/can’t have done
He can’t have finished the work. I saw him played computers last night.
could/couldn’t have done
You could have done better.
should/ shouldn‘t have done
You shouldn’t have called me yesterday. You disrupted my sleeping!
needn’t have done
You needn’t have called the police.
情态动词+have done：表示对过去发生的事进行推测
一定做了…
可能/不可能做了…
本可以做…（但没做）；本不可以做…，但做了
本不必做，而做了…
本应该做…（但没做）;本不应该做…，(但做了)
--- Where is Mary
--- She ____ in the library.
A. should be B. must be C. can be D. must have been
2. His room is dark. He must ____ to bed.
A. go B. be going C. have gone D. have been gone
--- Will your father stay home tonight
--- I’m not sure, He ____to work.
A. must go B. can go C. may go D. could go
4.There was plenty of time. She ____ worried or hurried.
A. mustn’t have B. shouldn’t have C. must be D. needn’t have
5. The flower is dead. I ____ it more water.
A. will give B. would have given C. must give D. should have given