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(共14张PPT)
Match the two parts to make sentences.
1. A fish
2. A duck
3. A parrot
4. A dog
5. A cat
B
C
A
B
C
D
D
E
A. can speak
B. can fly
C. can swim
D. can run fast
E. can climb trees
We can talk about abilities using can.
Match and read
C
情态动词can的用法
can 表示能力,意为“能、会”
eg: He can play the guitar.
Who can answer the question
can 表示请求、允许,意为“可以”
eg: You can go home now.
You can't park here. It's a no parking zone.
表示请求、邀请,有时用could,表示语气更委婉。
eg: -Could/Can I use your pen
-Of course you can.
(1) Can I hang out with my friends
(2) Could you please sweep the floor
(3) Can I borrow your pen
(4) Could you help me with the housework
can
could
make polite requests
ask for permission
Think and say
Can vs. Could Challenge
Read and write
3a
Read the questions with can or could. Notice how they are answered. Then write R for requests or P for permission next to each question.
Could you please sweep the floor OK, Mum. I’ll do it at once.
Could I hang out with my friends after lunch Sorry, Jim, but you have to pack up your things first.
Can I put some flowers on the table Yes, good idea!
Can you help me hang up the photos Sure. / No problem!
R
R
P
P
How do you know that
Could I ...
Can I ...
Could you ...
Can you ...
make polite requests
ask for permission
Think and choose
How to make requests and ask for permission
表示“请求”，委婉地请求别人做某事
常用句型：Can/Could you (please) + 动词原形+ 其他
表示“请求许可”，委婉地请求别人允许自己做某事
常用句型：Can/Could I + 动词原形+ 其他
否定句型：Can/Could you (please) not do sth
Can/Could you please.. “请你···好吗 ”/“你能/可以···吗 ”, 用于提出要求或请求。常用答语有：
肯定回答 Yes, sure/of course. 好的，当然可以。
No problem. 没问题。
With pleasure. 乐意帮忙。
Sure/Of course/Certainly. 当然可以。
否定回答 Sorry, I can't. I have to... 对不起, 我不能。我得...
Sorry, I'm going to... 对不起, 我将...
I'm afraid I can't. I have to... 恐怕不行。我得...
I'm afraid not. 恐怕不行。
How to respond to requests questions
Can/Could I... “我能···吗 ”，用于请求对方允许自己做某事。常用的答语有：
肯定回答 Yes, you can. 是的, 你可以。
Of course you can. 当然可以。
Yes, please. 是的，去吧/用吧/......
否定回答 Sorry, you can't. 对不起，你不可以。
Sorry, I'm afraid you can't. 对不起，恐怕不行。
How to respond to permission questions
1.对提出请求或征询许可的句型做否定回答时，通常以sorry或I’m sorry开头。
eg: — Could you help me with my English now
— I’m sorry, but I have a football match ten minutes later.
2.如果问句中使用could，回答时要用can或can’t, 不能用could或couldn’t。
eg: — Could I use your bike
— Sure, you can.
注 意
A: ____________________________________
B: Of course you can. Let me show you the way.
A: ___________________________________
B: No, you can’t. You have a basketball game
tomorrow, remember You need a good rest.
A: ____________________________
B: Yes, if you are careful with it.
A: Can I go to the movies
B: Of course.
A: ______________________________
B: I can’t. I have to do some work now.
Choose the best question to complete each conversation.
A. Could you give me a ride to town now
B. Can I stay out until eleven
C. Mr Lake, can I use your toilet
D. Could I use your computer
3b
Choose and complete
(1) You are at your friend’s home. You want to call your parents, but your
phone is dead.
　 A: Can / Could I use your phone 　B: Sure. / Of course.
(2) You were sick at home yesterday. Your friend went to an English class
and took notes. You want to know more about the class.
　 _______________________________________________________
Read and make up
Make up conversations for each setting, using can or could.
A: Could I borrow/use your English class notes B: Sure.
3c
(3) You are holding a large box. It is difficult to open the door. Your
neighbour comes.
　 _____________________________________________________
(4) You and your classmates want to help clean up the community. Ask your
classmates to bring gloves and rubbish bags.
　 _____________________________________________________
Read and make up
3c
Make up conversations for each setting, using can or could.
A: Could you please help me open the door/carry the box B: Of course.
A: Can/Could everyone bring gloves and rubbish bags tomorrow B: No problem.
Make up conversations for each setting, using can or could.

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