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(共22張PPT)
Home, sweet Home
Section A Grammar
Unit 2
Learning aims
能夠識別 can、could 在請求和許可語境中的語義差異，清晰區分不同情境下的用法
能在不同場景中使用can或could
Lead in
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!
What are can and could used for
Activity 1
Learn to use can or could
3a
Read the questions with can or could. Notice how they are answered. Write R for requests or P for permission next to each question.
R
P
P
R
How can we use Can/Could
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 sentences. Find out the usage of can/could.
情態動詞 can & could 的用法
1. 用于提出要求或請求 Can/Could you please... （重點）
2. 用于請求許可 Can/Could I... （重點）
3. 用于表示能力 can表示現在的能力，could表示過去的能力
情態動詞can和could可用于向對方提出請求，也可用于請求對方允許自己做某事。它本身不能作謂語，必須和動詞原形一起構成謂語。
Read the sentences. Match the two parts.
Make polite requests
提出請求
Ask for permission
請求許可
Can I hang out with my friends after lunch
Can I grow some flowers there
Can I invite my friends to our new house
Could I go out
Could we keep some fish here
Can you sort your things into those boxes
Can you take care of them every day
Could you please help me hang up the photos
Could you please sweep the floor
Discuss in groups to find out how to answer the Can/Could questions.
常用句型 Can / Could you (please) do sth.
肯定答語
否定答語
Yes, sure/of course. 好的，當然可以。
No problem. 沒問題。
With pleasure. 樂意幫忙。
Sure/Of course/Certainly. 當然可以。
Sorry, I can’t. I have to... 對不起，我不能。我得...
Sorry, I’m going to... 對不起，我將...
I’m afraid I can’t. I have to... 恐怕不行。我得...
I’m afraid not. 恐怕不行。
常用句型 Can / Could I do sth.
肯定答語
否定答語
Yes, you can. 是的, 你可以。
Of course you can. 當然可以。
Yes, please. 是的，去吧/用吧/......
Sorry, you can’t. 對不起，你不可以。
Sorry, I'm afraid you can’t. 對不起，恐怕不行。
Could I hang out with my friends tonight
No, you couldn’t.
Sorry, you can’t.


在回答用could 提出的請求時，
通常不用 could而用 can。
Activity 2
Use can/could correctly
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
1. A: ______________________________
B: Of course you can.
2. A: ______________________________
B: Yes, if you are careful with it.
C. Mr Lake, could I go to the toilet
D. Could I use your computer
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
3. A: _____________________________
B: No, you can’t. You have a basketball game tomorrow, remember You need a good rest.
B. Can I stay out until eleven
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
4. A: Can I go to the movies
B: Of course.
A: ____________________________________
B: I can’t. I have to do some work now.
A. Could you give me a ride to town now
Make up conversations for each setting, using can or could.
3c
You’re at your friend’s home. You want to call your parents, but your phone is dead.
_________________________
_________________
Sure. /
Of course.
Can / Could I use your phone
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.
_________________________
_________________
Sure. /
Of course.
Can / Could I borrow your notebook
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
_________________________
_________________
Sure. /
Of course.
Can / Could you help me open the door
4. You and your classmates want to help clean up the community. Ask your classmates to bring gloves and rubbish bags.
________________________________________________
_________________
Sure. /
Of course.
Can / Could you bring gloves and rubbish bags
1 Can I stay out until eleven
Language points
until prep.到......時；直到......為止
They didn't have a car until last year. 他們直到去年才有一輛汽車。
You will never truly understand your parents’ great love until you grow up.
直到你長大后，你才會真正理解父母偉大的愛。
until 到······時；直到······為止 常與延續性動詞連用，引導時間狀語從句，表示動作直到until所表示的時間才結束
not…until 直到......才.... 常與非延續性動詞連用，表示動作
直到until所表示的時間才發生
2 Yes, if you are careful with it.
be careful with 注意；當心
Be careful with the knife while cooking, and don't cut your fingers.
做飯時小心用刀，不要切傷手指。
Be careful not to wake the baby. 注意別吵醒嬰兒。
Be careful — the floor is slippery. 小心——地板很滑。
be careful (not) to do sth. “小心(不要)做某事”。
(2) be careful 可單獨使用，表示“小心，當心”，相當于look out 或watch out。
3 You want to call your parents, but your phone is dead.
My phone went dead, so I need to charge it.
我的手機沒電了,所以我需要給它充電。
There were dead leaves on the ground after the strong wind.
大風過后枯葉落了一地。
I'm afraid he is dead. 恐怕他已經去世了。
(1)【形容詞】（因為缺電）不運行的
(2) 【形容詞】死的 在句中作定語或表語。the dead 死者
Summary
情態動詞 can & could 的用法
1. 用于提出要求或請求 Can/Could you please... （重點）
2. 用于請求許可 Can/Could I... （重點）
3. 用于表示能力 can表示現在的能力，could表示過去的能力
Exercise
一、根據漢語提示，補全句子。
1. 切洋蔥時，請當心你的眼睛。
When you cut up the onions, please _______ _________ _______
your eyes.
2. 我們在課堂上應該認真記筆記。
We should ________ ________ carefully in class.
3. 你的書包亂糟糟。你需要整理它。
Your schoolbag is in a mess. You should ________ ______ _______.
4. 周末我想和朋友去看電影。
I want to ________ ________ ________ ________ with my friends this weekend.
5. 上學期，直到6月底，我們才結束新課。
We _______ finish the new lessons _______ the end of June last term.
clean it up
be careful with
take notes
go to the movies
didn’t until
Homework
1 Make a conversation with can or could.
2 Preview the next period.

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