内容正文:
Unit 3
安当
同步系列
Unit 3
Could you please clean your room?
单元语法专题
乡语法精讲
影吗?
情态动词could的用法
Yes,you can,是的,你可以去
情态动词could表示向对方委婉地提出请
Could I use your ear?我能用你的汽
求或征求对方的许可。could州于疑问句中,
车吗?
可代替can,与can无时态上的区别,但语气要
Sorry,you can'L.I have to go out..抱歉,
比can委婉且里有礼貌。
你不能。我得出去。
1,委婉地请求别人做某事
【注意】无论是肯定回答还是杏定回答,
(1)句型“Could you do.?/Could you
都要避免使川could,而要用can,因为回答须
please do…?”意为“你能做…吗?/请问你能
用确定的语气
做…吗?”
3.could的其他用法
(2)对这种提出请求的句子的回答:
(l)could为can的过去式,表示能力。
①肯定间答:Certainly./Of course./With
He said that he couldn't speak English.
pleasure./No problem./Yes,sure.
说他不会说英语。
②否定回答:No,Ican'L./Certainly noL./
(2)表示惊讶、怀疑或不相信等态度,主要
No,I'm afraid I can't.
用于否定句和疑问句,此时could与can无时
-Could you please clean your room?请
问上的区别,但语气比can弱。
你打扫你的房间好吗?
He couldn't/can't be over fifty.他不可能
Sure./Sorry,I can't.I'm very busy
超过50岁。
now.可以。对不起,我不能。我现在很忙。
(3)表示可能性,指对将来,现在或过去某
2.委婉地请求圳人允许自已做某事
种可能性的推测。
(I)句型“Could I do.?”意为“我可以
The windows are open.He could have
做…吗?”
(2)对这种征求许可的句了的回答:
come back.窗户是开着的。他可能回来了。
①肯定l问答:Ycs,you can./Certainly./
心语法专练
Yes,sure.
一、单项填空
②否定回答:No,you can't./No,I'm
()1.By the time she was eight,Linda
afraid you can't.
read English and French.
一Could I go to the movies?我能去看比
A.could B.must C.need D.may
支点,梦想的起点
29
英语
RJ版
八年级下册
)2.-Could I use your bike?
A.needn't
B.can't
I have to go out by bike now.
C.won't
D.couldn't
A.Yes,sure
B.No problem
()9.Can you have a picnic with me this
C.No,I can't
D.Sorry,you can't
Sunday,Cindy?
()3.Can you come over to my house for
It depends on whether I'm
dinner?
free or not.
Shall I bring anything?
A.I'm not sure
B.Lucky you
A.Perhaps next time
C.Thank you
D.Have a good time
B.Have a nice meal
()10.-Can you go to the movies with me
C.Yes,I'd like to
tonight?
D.It depends
I have to prepare for my
()4.Hc
sleep,although he tried to.
English test.
One cup of coffee in the late afternoon
A.Yes,I can
B.I'd love to
caused him to stay awake almost all night.
C.Never mind
D.I'm afraid not
A.wouldn't
B.shouldn't
二、根据汉语意思完成句子
C.couldn't
D.mustn't
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