八年级英语下册《Unit 3 第3课时(A Grammar Focus-4c)》教学课件

talents at the very beginning.
—I agree. Even Einstein _______ read until he
was seven.
A. can’t
B. mustn’t
C. couldn’t
D. needn’t
根据对话内容，用情态动词 can, could 或 must 的适当形式填空，使对话完整、通顺。
注意
(1)无论是“Could you please... ?”还是
“Could I ...?”句型，问句中的 could 可用 can 来
代替，但是 could 更委婉。且答语中一般都避免使
用 could 来回答。
(2)句中 please 还可放在句尾，其前用逗号和前面的
内容隔开。
例：——请问我可以邀请朋友去聚会吗？ ——当然可以。那听起来很有趣。 —Could I invite my friends to the party, please? —Of course you can. That sounds fun.
答语中的 can 不能换成 could
典例剖析 （酒泉中考）
—Can I borrow your new comic books?
—___________ Here they are.
A. What’s up?
B. What a pity!
C✔. Sure.
D. Thank you.
拓展
could 的其他用法如下：
Could you please fold your clothes, fold your clothes? Could you please make the bed, make the bed? If we are free, we all say “Yes, sure”. If we are busy, we can say “Sorry, I can’t”.
5. ___ Could you lend metossobm.把e m某o物ne借y?给某人
4a Write R for requests and P for permissions.
borrow, lend与keep borrow非延续性动词，意为“借；借用”。表示从别人那里借
1来. 东_P_西_。CboorruowldsthI. fhroamn…g向o/u从t…w…i借th某m物。y friends after
Ask for permission.（征求许可）
Could I go out for dinner, dad?
Yes, you can. And could you please
take out the rubbish?
No problem.
Make a polite request. （礼貌地请求）
use your computer? I need to look up some information for my homework, but my computer doesn’t work.
B: Of course you 6. __ca_n____. Remember to turn it off after you use it.
3. _P__ Could I borrow that book?
4. _R__ Could you help me do the dishes?
5. _R__ Could you lend me some money?
Then match each one with the correct response.
A: OK, I will.
Read the following sentences.
1. ___ Could I hang out w闲ith逛my friends after
borrtohwe 借m；ov借ie?用
pass sb. sth.=pass sth. to sb.
borrow sth. from …
常用句型 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
例：——妈妈，我明天可以和朋友去购物吗？ ——恐怕不行，你要上钢琴课。 —Could I go shopping with my friend tomorrow, Mom? —I’m afraid you can’t. You should take your piano lessons.
把某物递给某人
2. 向__/_从C…ou…ld借y某ou物please pass me that tool bag?
3. ___ Could I borrow that book?
工具
4. ___ Could you help melednod t借he给d；ish借e出s?
lend sb. sth.=lend sth.
Discussion
Which is the most polite one? 1. Sweep the floor, Peter! 2. Can you sweep the floor, Peter? 3. Could you please sweep the floor?
Read the following sentences and observe the questions.
A: Hey, Jimmy! 1. C__a_n_/C__o_u_l_d you take the dog for a walk now?
B: Sorry. I 2. _c_a_n_’_t_, Kate! I’m busy. I have no time to do that.
A: What are you doing?
2. Ability aims: Be able to make requests and ask for permission in a polite manner.
3. Emotional aims: Be polite and be helpful.
Chant Time
Could you please sweep the floor, sweep the floor? Could you please do the dishes, do the dishes?
Ask for permission.
Make polite requests.
情态动词 could 的用法
• 情态动词 could 构成的句型用于向对方委婉地提 出请求或征求对方的许可。它本身不能做谓语， 只能和动词原形一起构成谓语。
1. 用于委婉地请求别人做某事（提出请求）
常用句型 Could you ( please ) do sth.? 肯定答语 OK./Certainly./Of course./With pleasure./
a. Yes, here you are. b. Hmm. How much do you need? c. Yes, sure. No problem. I finished reading it last
3.（云南中考）—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
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
例：——你能整理你的床铺吗？ ——抱歉，我不能。我现在必须做家庭作业。 —Could you please make your bed? —Sorry, I can’t. I have to do my homework now.
Review and say
Peter wants to do
go out for dinner go to the movies get a ride
Peter’s father wants him to do
do the dishes make the bed sweep the floor take out the rubbish
(1)could 为 can 的过去式，表示能力。 He could ride a bike at the age of five.
(2)表示可能性，指对现在、将来或过去某种可 能的推测。
The book could be Lily’s because she likes reading books.
2. （孝感中考）— Helen, could you please water
the flowers in my garden?
—_________. They are so lovely.
A. That’s too bad
B. With easure
C. You’re welcome
D. I’m afraid not
(3)表示建议。 You could go there by bus.
语法精练
1. （北京中考）— ________ you give me a hand? I can’t move the box by myself. —No problem. A. Could B. Should C. Must D. Need
B: I’m busy drawing a picture. I 3. _m__u_s_t__ hand it in (上交) tomorrow.
A: 4. __C_a_n_/_C_o_u_l_d_ I have a look at it? B: No problem. A: Mm, it looks nice. By the way, 5. __c_a_n_/c_o_u_l_d___ I
典例剖析 （铜仁中考）
—My English is poor. Could you help me with it?
—_________________.
A. Thank you
B. Me, too
C✔. No problem
D. See you
2. 用于委婉地请求别人允许自己做某事（征求许可）
4.（怀化中考）—Mom, could I go out with
my friends?
—_________, but you have to come back
before 10:00.
A. Sorry, you can’t
B. Yes, you can
C. No way
5.（苏州中考）—Some people don’t show their
lend 非延续性动词，意为“借给；借出”。指把自己的东西借
给别人。tlehned smb. sothv.＝iel?end sth. to sb. 把某物借给某人。 2kk.eeee_ppR_延st_h续.Cf性oro动＋u词一ld，段y意时o为间u“保p借留l；e/a保保s存存e某”p物。a一s可s段与m时一e间段t。时h间at连t用o。ol bag?
Unit 3 Could you please clean your room?
Section A Grammar Focus-4c
R·八年级下册
Learning aims
1. Knowledge aims: pass, borrow, lend, finger, hate, chore, while…&pass me the salt, borrow that book, lend me some money, cut my finger, try not to do, hate to do, like to do , help me with some chores…