Unit 8 Music Lesson 1 课件

(共15张PPT)
Unit 8 Music
Lesson 1
Enjoy the Story
情态动词
情态动词后接动词原形;
没有人称和数的变化;
不能单独作谓语, 与后面的动词共同作谓语;
其否定形式在后面直接加not。
Modal verbs
情态动词
can / can not
may / may not
must / must not
Modal verbs
情态动词
can / can not
1. 表示能力(会)
Mary can speak English, but she can not speak French.
2. 表示允许(可以)
Can I use your dictionary I can’t find mine.
3. 表示推测 (可能 ) ----通常用于否定形式
He can't be in the office. I saw him go out just now.
may / may not
1. 表示允许(可以)
May I come in
2. 表示推测 (可能) ----通常用于肯定形式
She may be still waiting for us.
3. 表示祝愿
May you have a happy weekend.
may的用法:
may / may not
●以may开头的疑问句，其否定回答用can't或 mustn't。
--May I go home now
--Yes, you may.
No, you can’t.
may not的用法:
must / must not
1. must表示必须
You must do your homework first.
2. must表示 一定(肯定性推测 )
He must be at home.
must的用法:
must / must not
1. mustn't表示禁止(不准；不允许)
You mustn't smoke here.
2. 以must开头的疑问句，其否定回答要用needn't.
-- Must I clean the classroom now
-- Yes, you must.
No, you needn't.
must not的用法:
What do the signs mean Do you know
You must not cycle.
You must be careful.
You must turn left.
You must not enter.
You must pay ten yuan.
You must keep silent.
You must not turn right.
You must not smoke.
Can you …
你会/能……吗？
Yes, I can. /No, I can't.
是的，我会/能。/不，我不会/不能。
What can you do
你会/能干什么？
I can …
我会/能……
Can you swim
No, I can't.
Yes, I can.
Can you play football
Yes, I can. It's easy!
What can you do
I can run fast!
Can you play the piano
Yes,I can.