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(共32張PPT)
Unit 2
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UNIT
2
Can / Could for polite requests and permission
梳理和歸納can/could表示提出請求和許可的構(gòu)成形式、表意功能和用法。
結(jié)合語境，正確使用can/could表示提出請求和許可，詢問或描述身邊正在發(fā)生的事情。
until
prep. 到……時(shí)；直到……為止
until用于肯定句中時(shí)，作介詞，表示句子的動(dòng)作一直持續(xù)到until短語所表示的時(shí)間為止。
She stayed in bed until lunchtime.
dead
adj. 不運(yùn)行的；死的
My phone is dead.
我的手機(jī)死機(jī)啦。
note
n. 筆記；記錄；便條
v. 注意；指出
take notes 做筆記
The teacher asked us to note the new words in the text.
老師讓我們注意課文中的新單詞。
rubbish
n. 垃圾
rubbish bins 垃圾桶
throw rubbish 扔垃圾
pick up rubbish 撿起垃圾
讀下面的句子，歸納情態(tài)動(dòng)詞can/could的用法。
Can you speak English
你會(huì)說英語嗎？
能力
2. A: Can I put some flowers on the table
我能在桌上擺些花嗎？
B: Yes, of course you can.
可以，當(dāng)然可以。
3. Can you help me hang up the photos
你能幫我把這些照片掛起來嗎？
請求允許
提出請求
表示許可
1.表示能力（Ability）
can 表示現(xiàn)在或?qū)淼哪芰Α?br/>e.g. I can help you tomorrow.
我明天可以幫你。
2. 表示請求（Requests）
can（非正式）和 could（更禮貌）用于請求許可或幫助。
e.g. Can you open the window （非正式）
Could you please pass me the salt （更禮貌）
3.表示許可（Permission）
can（非正式）和 could（更正式/委婉）用于請求或給予許可。
e.g. You can leave early today.（允許）
4. 表示建議（Suggestions）
e.g. We could go to the cinema tonight.
我們今晚可以去看電影。
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 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!
1. 看句子開頭
如果是 Can/Could you... → 通常是請求R（請別人做某事）
如果是 Can/Could I... → 通常是許可P（詢問自己是否能做某事）
2. 看回答內(nèi)容
如果回答是Yes, I will. / Sure! → 通常是請求R
如果回答是允許/禁止某個(gè)行為Yes, you can. / No, you can’t. → 通常是許可P
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
P
R
P
情態(tài)動(dòng)詞can和could都可用于表示能力、提出請求和許可等。
用法 can（現(xiàn)在/未來） could（過去/委婉）
能力 She can swim. She could swim as a child.
請求 Can you help Could you help （更禮貌）
許可 Can I go Could I go （更正式）
Choose the best question to complete each conversation.
A: ______________
B: Of course you can.
2. A:____________________
B:Yes, if you are careful with it.
C
D
3. A:________________
B: No, you can’t. You
have a basketball game
tomorrow, remember
You need a good rest.
4. A: Can I go to the movies
B: Of course.
A: ___________________
B: I can’t. I have to do
some work now.
B
A
Make up conversations for each setting, using can or could.
1. You’re 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.
A: Could / Can you show me your notes about yesterday’s
English class
B: No problem!
3. You are holding a large box. It is difficult to open the
door. Your neighbour comes.
A: Can / Could you please help me open the door
B: Sure. / Of course.
4. You and your classmates want to help clean up the
community. Ask your classmates to bring gloves
and rubbish bags.
A: Could / Can you bring gloves and rubbish bags to the
community
B: No problem!
Can I stay out until eleven
until prep.& conj. 到……時(shí)；直到……為止
e.g. They worked until 5 p.m. yesterday.
We danced and danced until a lot of them joined in.
not ... until ... 直到……才……
e.g. I didn’t see Uncle Wang until the evening.
Don’t move until I tell you.
【語境應(yīng)用】將下列句子翻譯成英語。
1) 我們必須等到晚上7點(diǎn)。
_______________________________
2) 直到雨停了我們才可以出去。
_________________________________
We must wait until 7 p.m.
We can’t go out until the rain stops.
I. 單項(xiàng)選擇。
— ______ I borrow your pen
— Sure, here you are.
A. Should B. Can C. Must
2. — I forgot to bring my dictionary. Could I use yours
— Yes, you _______.
A. can B. must C should
3. — ______ I use your phone to make a call
— Sorry, it’s out of battery.
A. Would B. Must C. Could
B
C
A
Ⅱ. 改寫句子。用 can/could將直接請求改為更禮貌的形式。
Give me your book. →
2. Let me use your computer. →
3. Tell me the time. →
4. Open the window. →
5. Pass me the salt. →
Could you give me your book
Can I use your computer
Could you tell me the time
Could you open the window
Can you pass me the salt
Ⅲ. 填空練習(xí)。（用 can/could 補(bǔ)全句子）
When I was five, I ______ swim, but now I ______ swim very well.
2. ______ you ride a bike when you were seven
3. I ______ see the mountains from my window when
the weather is clear.
4. Visitors _____ not smoke in the museum.
could
Could
can
can
can
IV. 判斷正誤。
1. Can you helping me →
2. Could I have some water →
3. Can I to go now →
4. Could you pass me the keys →
5. Can he cooks dinner →
(正確：Can you help me )

(正確：Can I go now )

(正確：Can he cook dinner )
1. 請求許可
could 更禮貌（如 Could I borrow your book ）
can 更直接（如 Can I use your phone ）
2. 規(guī)則/能力
用 can（如 You can’t smoke here.）
3. 回答許可
肯定回答：Yes, you can. / Sure./ Of course. / No problem.
否定回答：Sorry, you can’t / couldn’t.
I can
能夠梳理和歸納can/could表示提出請求和許可的構(gòu)成形式、表意功能和用法。
能夠結(jié)合語境，正確使用can/could表示提出請求和許可，詢問或描述身邊正在發(fā)生的事情。
總結(jié)情態(tài)動(dòng)詞can/could表示請求和許可的構(gòu)成形式、表意功能和用法。
預(yù)習(xí)Section B的生詞并讀課文。

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