资源简介

(共32张PPT)
Section A
What can you do for your home
Grammar Focus
3a-3c
教学目标
通过语法表格，引导学生掌握表示提出请求与请求许可方面的句型；
引导与培养学生如何有礼貌地提出请求与得到相应的答复。
引导学生掌握can/could情态动词其他方面的用法。
引导学生进行不同情景练习，加强语法记忆巩固。选择适合的学习策略，如多观察，多反思；多记笔记，多背诵等。
1
Grammar Focus
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.
3a
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!
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.
3a
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!
Make polite requests
Ask for permission
Make polite requests
Ask for permission
总结
提出
要求
Can you help me hang up the photos
Could you please sweep the floor
用于请求别人做某事
请求
允许
Can I put some flowers on the table
Could I hang out with my friends after lunch
用于请求别人允许自己做某事
Make polite requests
Ask for permission
Could I go out for dinner with my friends Sure, that should be OK.
Could we get something to drink after the movie No, you can’t. You have a basketball game tomorrow.
Could you please take the dog for a walk OK, but I want to watch one show first.
Could you please take out the rubbish Yes, sure.
Make polite requests
Ask for permission
Then write R for requests or P for permission next to each question.
a. Yes, here you are.
b. Hmm. How much do you need
c. Yes, sure. No problem. I finished reading it last night.
d. Yes, but don’t come back too late.
e. No, I can’t. I cut my finger and I’m trying not to get it wet.
Write R for requests and P for permission. Then match each one with the correct response.
1. ___ Could I hang out with my friends after the movie
2. ___ Could you please pass me the salt
3. ___ Could I borrow that book
4. ___ Could you help me do the dishes
5. ___ Could you lend me some money
P
P
R
R
R
出去玩
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.
3a
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!
could
can 的过去时
礼貌请求
请求许可
提出建议
推测
I could run fast when I was a child.
Could you help me
You could talk to your teacher now.
He couldn’t be at the school then.
2 grammar
1. 表示能力
Can you speak French 你会说法语吗？
She could sing very well when she was young.
她年轻的时候歌唱得很好。
I could swim like a fish at the age of five.
我五岁时游泳游得像条鱼一样好。
（could 是can的过去式）
2. could表示请求，语气委婉，显得有礼貌
Could you please clean your room 你可以打扫你的房间吗？
肯定回答：Yes, I can. / Yes, sure. /OK./Certainly./Of course./With pleasure.
/No problem./Yes, sure.
否定回答： Sorry, I can’t. I have to do my homework. 对不起，我得做作业。
Sorry, I can’t. I have to… / I’m afraid not.
/ I’m afraid I can’t. I am going to…
在表示请求帮助或请求允许的疑问句中，我们常用could代替can， 以表示礼貌、委婉或不确定的语气，而can 则不具有这些语气。
这样用时，不能把could 看作为can 的过去式。
2. could 表示请求许可，希望得到允许。
Could I go to the movies
肯定回答：Yes, you can. / Yes, sure. /Yes, certainly.
/ Yes, please.
否定回答：No, you can’t. Sorry, you can’t. / I’m afraid you can’t.
注意
使用 could只是让请求更礼貌，回答时通常不用 could而用 can。
3. 提出建议: could与can的区别
could与can都是情态动词，could是can的过去式。二者都可用于表示请求，但是用法稍有不同。
can表示一般性的请求，语气随便，常用于熟人之间或长辈对晚辈、上级对下级的场合；
Can you tell us your story, Tony 你能给我们讲讲你的故事吗，Tony？
用 can 提出直接建议（常用于口语，语气较随意）
We can eat in a restaurant this evening. 今晚我们可以在餐馆吃饭。
could表示有礼貌的请求，语气委婉，常用于非熟人之间或晚辈对长辈、下级对上级的场合。
—Could you tell us if it snows in winter in Australia —Sure.
—请告诉我们，澳大利亚冬天下雪吗？—当然可以。
用 could 提出委婉建议（语气更礼貌、含蓄，适合正式或陌生场景）
Maybe I could give you a lift / ride to the supermarket.
也许我可以让你搭我的车去超市。
You could try reading the instructions before using.
你可以试着在用前先读一下说明书。
4. could与can表示推测
肯定句中的推测： can 通常不用于肯定句表示推测，会显得不自然。 He can be at home now. 不自然
He could/may/might be at home now. 他可能在家。
could 可以用于肯定句，表示不太确定的推测 ≈ may/might。
She could be lying. 她可能在撒谎。
It could rain later. 稍后可能会下雨。
否定句中的推测：
can't 和 couldn't 都可用于否定句，但语气不同：
couldn't语气更弱，表示"不太可能"， can't不可能 。 She couldn't be the thief—she was with me all day.
她不可能是小偷，她一整天都和我在一起。
情境 can could
肯定推测 不自然 可能≈may/might
否定推测 can't不可能 couldn't不太可能
疑问推测 直接 更委婉
过去推测 仅限否定 can't havedone could have done
可能做过
3
Exercise
Choose the best question to complete each conversation.
3b
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.
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
/ n t l/ prep. 到……时；直到……为止
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.
_______________________________________________________________________
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.
_______________________________________________________________________
_______________________________________________________________________
Make up conversations for each setting, using can or could.
3c
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.
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.
/ded/ adj. 不运行的；死的
take notes 做笔记
清扫
/k mju n ti/ n. 社区；社团
rubbish / r b / n. 垃圾
Child: Mom, could you help me open this jar
Parent: Sure! Can you twist it first Child: I tried, but I can’t.
Parent: Okay, could you hold it steady while I open it
Child: Yes! Can we have cookies after Parent: If you can put the jar away, then yes!
Think about one setting in your daily life, then make a conversation using can or could，
A: Excuse me, could you help me find a mystery book
B: Sure! Can you see this section here
A: Yes. Could I borrow one without a library card
B: No, but you can sign up now.
A: Great! Could you help me
B: Of course. Can you fill this form first
A: Yes, I can. Thanks!
Think about one setting in your daily life, then make a conversation using can or could，
Why should we use more polite expressions in our daily lives
That's a great point! Using polite expressions in our daily lives has many benefits, including:
Show good manners
Builds Positive Relationships
Creates a Positive Atmosphere
3
1
4
Avoid conflicts
2
Summary
New words
until; movie; dead; note; community; rubbish
make polite requests and ask for permission
Grammar
Expressions
be careful with; the movies; take notes; clean up
Make polite requests: 用于请求别人做某事
Ask for permission: 用于请求别人允许自己做某事
1. My car is broken. _______you please give me a lift
A. Must B. Need C. Should D. Could
D
2. — Could you please help me look after my pet dog I will be away for about two weeks.
— ________! I will take good care of it.
A. With pleasure B. You are kidding C. No way
A
3. —_______ you please take the dog for a walk
— OK, but I have to fold the clothes first.
A. Must B. Should C. Could D. May
4. — Mum, it's too hot. _______I swim in the lake with my friends
— No, you ______. That's too dangerous!
A. Could；mustn't B. Need；couldn't
C. Must；needn't D. Should；can't
C
A
5. —_______ you give me a hand I can't move the box by
myself.
—No problem.
A. Could B. Should C. Must D. Need
6. —Could you please do the dishes
—________. I cut my finger and I'm trying not to get it wet.
A. Yes, sure B. No problem
C. Sorry, I'm afraid I can't D. That would be fine
A
C
a. Yes, here you are.
b. Hmm. How much do you need
c. Yes, sure. No problem. I finished reading it last night.
d. Yes, but don’t come back too late.
e. No, I can’t. I cut my finger and I’m trying not to get it wet.
Write R for requests and P for permission. Then match each one with the correct response.
1. ___ Could I hang out with my friends after the movie
2. ___ Could you please pass me the salt
3. ___ Could I borrow that book
4. ___ Could you help me do the dishes
5. ___ Could you lend me some money
P
P
R
R
R
出去玩
I. 根据语境或提示完成下列各题，每空一词（含缩略形式）。
1. —Lily, could you pass the paper to me
—_______, _______. Here you are.
2. —Could we go to the zoo this weekend
—_______ _______. But you have to finish your homework first.
3. —Could you help me do some housework
—______________, _______ _______. I’m a little tired now.
Yes sure
Of course /
No problem
Sorry / No I can’t
4. —Could I borrow your bike this afternoon
—_____________, _______ _______. My bike is broken.
5. —Sir, we are watching the movie. Could you please _______ _______(talk) on the phone here
—Oh, sorry, I won’t do that.
Sorry / No you can’t
not talk
Ⅱ. 根据对话内容，在空白处填入恰当的情态动词，使对话完整、通顺。
A: Hey, Jimmy! (1)____________ you take the dog for a walk now
B: Sorry, I (2)_______, Kate! I’m busy. I have no time to do that.
A: What are you doing
B: I’m busy drawing a picture. I (3)_____________ hand it in (上交) tomorrow.
Could / Can
can’t
must / have to
A: (4)____________ I have a look at it
B: No problem.
A: Mm, it looks nice. By the way, (5)___________ I use your computer I need to look up some information for my homework, but my computer doesn’t work.
B: Of course you (6)_______. Remember to turn it off after you use it.
A: OK, I will.
Could / Can
could / can
can
1. Make a conversation between your mother and you, using the sentence pattern “Could you please … Could I … ”
2. Preview the new words and expressions.

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