资源简介

(共21张PPT)
Section A Grammar Focus
Unit 6 Home
Sweet Home
To use "can/could" to make polite requests and ask for permission correctly.
01
To distinguish between requests (R) and permission (P) using "can/could".
02
学习目标
Lead in
Let’s enjoy a song!
Read the questions with can or could . Notice how they are answered.
Could you please sweep the floor Yes, Dad. 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
Write R for requests or P for permission next to each question.
P
P
R
3a
Make polite requests
常用句型 Can / Could you (please) do sth.
肯定答语 OK. / Certainly. / Of course. / With pleasure. / No problem. / Yes, sure.等
否定答语 Sorry, I can’t. I have to… / I’m afraid not. / I’m afraid I can’t. I am going to…等
Could you please sweep the floor Yes, Dad. 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!
Write R for requests or P for permission next to each question.
R
P
P
R
Ask for permission
常用句型 Can / Could I do sth.
肯定答语 Yes, you can. / Certainly. / Yes, please.等
否定答语 Sorry, you can’t. / I’m afraid you can’t.等
Grammar
情态动词can和could可用于向对方提出请求，也可用于请求对方允许自己做某事。它本身不能作谓语，必须和动词原形一起构成谓语。
情态动词
can & could
1. 用于提出要求或请求 Can/Could you please... （重点）
2. 用于请求许可 Can/Could I... （重点）
3. 用于表示能力：can表示现在的能力，could表示过去的能力
情态动词 can 和 could 的用法
考向1 用于提出要求或请求
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。
e.g. —Can you please lend me your bike 请把你的自行车借给我好吗？
—Sure/Of course/Certainly. 当然可以。
—Could you please go hiking with me tomorrow
请你明天和我一起去远足好吗
—Sorry, I can't. I have to prepare for a competition.
对不起，我不能。我得准备一个比赛。
练习：—Can you go out with us tonight
—I'd love to, but I ______. I have to finish my work.
A. can't B. mustn't C. needn't D. shouldn't
A
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。
考向2 用于请求许可
e.g. —Could I have a look at your new watch 我能看一下你的新手表吗？
—Of course you can. Here you are. 当然可以。给你。
—Mum, could I go out for a while 妈妈，我能出去一会儿吗？
—I'm afraid you can't. You have to wash your clothes first.
恐怕不能。你得先把你的衣服洗了。
练习：—Sam, ______ I join you in the community service
—Of course you can.
A. could B. must C. should D. need
A
特别提醒:
表示提出请求或请求许可（即请求别人允许自己做某事）时，
could和can都可以用，但could语气更委婉。
e.g. Could/Can I come in 我可以进来吗？
但回应许可时，只能用can, 而不用could(此时的could只表示委婉语气，不表示过去式，故用can回答。当表示过去的能力时，才可用could回答)。
e.g. —Could I use your pen 我可以用你的钢笔吗？
—Of course you can. 当然可以。(此处不能用could)
练习：—Simon, could you go to Huating Lake with me tomorrow
—Sorry, I ________. I have to take care of my sick brother at home.
A. won’t B. mustn’t C. can’t D. couldn’t
C
表示现在的能力用can, 表示过去的能力用could。此时could是can的过去式。
e.g. My sister can swim. 我妹妹会游泳。
He couldn't answer the question at that time.
他当时不能回答那个问题。
练习：— ______ I take my cousin Shirley with us, Mr. Wu？
— Yes, but we’ll get there by bike. ______ she ride a bike
— Yes, and she ______ ride a bike when she was only six years old.
A. Could; can; could B. Can; can; can
C. Can; could; could D. Could; could; can
A
考向3 用于表示能力
3b
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, could I go to the toilet D. Could I use your computer
A: ______________________________
B: Of course you can. Let me show you the way.
A: ______________________________
B: Yes, if you are careful with it.
A: ______________________________
B: No, you can’t. You have a basketball game tomorrow, remember You need a
good rest.
A: Can I go to the movies
B: Of course.
A: ______________________________
B: I can’t. I have to do some work now.
C. Mr Lake, could I go to the toilet
D. Could I use your computer
B. Can I stay out until eleven
A. Could you give me a ride to town now
3c
1. You’re at your friend’s home. You want to call your parents, but your phone is dead.
_____________________________________________________________
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.
_____________________________________________________________
_____________________________________________________________
Make up conversations for each setting, using can or could.
A: Can / Could I use your phone B: Sure. / Of course.
A: Can / Could I borrow your notes
B: Of course. Here are my notes.
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.
_____________________________________________________________
__________________________________________________________________________________________________________________________
A: Can / Could you help me open the door B: Sure. / Of course.
A: Can / Could you bring gloves and rubbish bags for cleaning up the community
B: Sure. / Of course.
Pair work
Make new conversations with your partners.
Could I go to the movies tonight
Of course you can.
We learn:
1. Indefinite pronouns:
something/anything/nothing/someone/anyone/everyone
2. Phrases: nothing but, be ready to do, somewhere to go
3. Sentence patterns:
Did you do anything... No, nothing...
We can:
use anything in questions | nothing in negative replies.
课堂总结
当堂检测
按要求完成下列句子(每空一词)。
1. She can fix the bike herself. (改为一般疑问句)
________ she ________ the bike herself
2. —Mike, could you lend me your dictionary (作肯定回答)
—________ ________. Here you are.
Yes sure
Can fix
3. —Excuse me, could I open the window (作肯定回答)
—Yes, ________ ________.
4. He could solve the problem. (对画线部分提问)
________ ________ he ________
5. Lucy was able to ride a bike at six. (改为同义句)
Lucy ________ ________ a bike at six.
you can /of course
What could do
could ride

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