(共9张PPT)
Unit 3 Could you please
clean your room？
第三课时 Section A（Grammar Focus-4c）
语法精讲
情态动词could的用法
情态动词could构成的句型用于向对方提出请求或征求对方的许可，表示委婉的
语气。其用法主要有以下几种：
1. could为can的过去式。
表示“过去的能力”，其肯定回答和否定回答都用could。如：
—Could you play basketball when you were 5 years old？
你5岁的时候会打篮球吗？
—Yes，I could. /No，I couldn't.
是的，我会。/不，我不会。
2. 表示请求。
（1）could可用于表示请求的问句中，其表现形式有两种：
Could you
（please） do
sth.？ 用于向对方提出委婉的请求，意为“请你做某事好吗？”
Could I do sth.？ 用于征求对方的许可，意为“我可以做某事吗？”
【注意】此句型中的 could 不是can的过去形式，只表示委婉的语气。
如：Could you please go shopping with me？你能和我一起去购物吗？
Could I go camping with my friends next morning？
明天早上我能和朋友们去野营吗？
（2）另外，表示礼貌请求的句型还有：
Would you like＋sth./to do sth.？
May I＋do sth.？
Shall we＋do sth.？
Would you mind＋sth./doing sth.？
What/How about＋sth./doing sth.？
（3）表示请求的问句的回答有：
肯定回答为：Yes，you can./Sure./Of course./No problem./I'd love
to./Certainly./Yes，please./It's OK. /All right.
否定回答为：Sorry，I'm afraid not./I'm sorry.You can't./I'm sorry，but…/Of
course not.
【温馨提示】could表示请求时，其肯定回答和否定回答都不用could。
语法精练
Ⅰ.根据句意，用所给词的适当形式填空。
1. Could you （help） me with my lessons？
2. Could you （make） my bed？ I'm late.
3. Could you please （clean） your room？
4. Could we （leave） at seven？
5. —Could I watch TV now？
—Yes， you （could）.
help
make
clean
leave
can
Ⅰ
Ⅱ
Ⅱ.根据中文意思，补全英语译文。（每空限填一词，缩写算一词）
6. 你能遛狗吗？
you please the dog for a walk？
7. 请您不要在这里打电话好吗？
you please on the phone here？
8. ——今天下午我们可以去爬山吗？
——对不起，你们不能。
— we to climb the mountains this afternoon？
—Sorry，you .
Could
take
Could
not
talk
Could
go
can't
Ⅰ
Ⅱ
9. ——你那时会游泳吗？
——不，我不会。
— you then？
—No，I .
10. ——迈克，能把你的自行车借给我吗？
——没问题。
—Mike， you your bike？
— .
Could
swim
couldn't
could
lend
me
No
problem
Ⅰ
Ⅱ(共25张PPT)
Unit 3 Could you please clean your room
第三课时 Section A (Grammar Focus-4c)
Could you please make the bed
Yes, sure. / Of course. / All right. / OK.
Sorry, I can’t. I have to ...
Warm- up
Could you please sweep the floor
... ...
... ...
Could you please do the dishes
Could you please take out the rubbish
... ...
... ...
Could you please fold the clothes
Could I use the computer
Sure, that should be OK.
No, you can’t. You have to finish homework first.
Could I have a sandwich
... ...
... ...
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.
Grammar Focus
could
can 的过去时
礼貌的请求
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.
Could you please clean your room
你能打扫一下你的房间吗？
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。
Could you please … 请你……好吗
这里的could 不是表示一般的过去式，而是用来表示委婉地提出请求。
Could you please do sth
Yes, I can.
All right.
“Yes” Sure.
No problem.
Certainly.
No , I can’t…
I have to ---
“No”
Sorry, I can’t…
I have to ---
1. 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. 是的，我可以。
Yes, sure. / Yes, of course.
否定回答：Sorry, I can’t. I have to do my homework.
对不起，我不得不做作业。
2. could表示请求许可，希望得到允许。
Could I go to the movies
我能去看电影吗？
肯定回答：Yes, you can.
Yes, sure. 当然可以。
否定回答：No, you can’t. 不，不行。
Now make sentences using could and
the following phrases.
（1）go to the movies 去看电影
（2）stay out late 在外面待得很晚
（3）use the car 使用汽车
（4）get a ride 去骑车
（5）use your computer 使用你的电脑
（6）borrow some money 借些钱
（7）invite my friends to a party 邀请我的朋友参加晚会
（8）go to the store 去商店
（9）use your CD player 使用你的CD播放器
3. 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？
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
请告诉我们，澳大利亚冬天下雪吗？
—Sure.
当然可以。
Write R for requests and P for permissions. Then match each one with the correct response.
____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
R
P
R
R
4a
Yes, here you are.
Hmm. How much do you need
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.
1—d 2—a 3—c 4—e 5—b
4a
Fill in the blanks in the
conversation.
A: I hate to ______ chores.
B: Well, I hate some chores too, but I like other chores.
A: Really Great! ______ I ask you to ______ me with some chores then
B: What do you need help with
A: _______ you please _______ my clothes for me
B: I don't want to do that! It's boring!
A: OK. Then ________ you _______ do the dishes for me
B: Sure, no problem. But _______ we go to the movies after that
A: Sure. I'll finish my homework while you help me with the dishes. Then we can go to the movies.
do
Could
help
Could
fold
could
please
could
4b
Make a list of things your group needs to do for a camping trip. Then discuss who will do them and complete the chart.
4c
A: Could you please bring a tent, Liu Chang
B: Sure. And could you please...
C: Sorry, I can't. I have to...
borrow 借入 borrow sth. from sb.
lend 借出 lend sb. sth.
lend sth. to sb.
You can borrow the book from the library.
I lend Tom my bike.
I lend my mike to Tom.
borrow & lend
Language points
Ⅰ.单项选择
1. Could I ten dollars fron you I will give it back to you next week.
A. borrow B. give C. send D. help
2. My mother wants me to_________my bed every morning.
A. makes B. make C. have D. take
3. She her trousers and put them in her box.
A. folds B. folded C. feld D. fold
A
B
B
Exercises
4.— Could I borrow your dictionary, please
—______. Here you are.
A. No, thank you B. Sorry, you can’t
C. Yes, I’d love to D. Of course
5. —Does Lucy like cleaning the room
—No. She__________cleaning it.
A. likes B. don't like C. hates D. doesn't
C
D
1. —What happened to you, Lucy
—I cut my f when I cut up the carrots.
2. I h hamburgers and ice-cream, so I never eat them.
3. W I’m listening to music, my brother is playing the violin.
ate
hile
4. My pen is on the sofa. Please p it to me.
5. Peter always b things from me and he
doesn’t give them back on time.
Ⅱ.根据句意及首字母提示写出单词
inger
1. 我能和我的朋友们出去吃饭吗？
_________________________with my friends
2. 看完电影我们能去喝点东西吗？
______________________________ after the movie
3. 你能带狗去溜溜吗？
___________________________________
4. 你能去倒垃圾吗？
__________________________________
Could I go out for dinner
Could we get something to drink
Could you please take the dog for a walk
Could you please take out the rubbish
Ⅲ.翻译句子
Make a conversation between you and your friend, talking about preparing for a camping trip with sentences “Could you please … Could I … ”
Homework
