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四清导航
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英语八年级上册人教版
单元语法精讲精练
情态动词can的用法
·can是情态动词,没有人称和数的变化,但有时态的变化,它的过去式
为could,其后直接接动词原形,总结它的用法如下:
()表示能力,意为“能:会”,具体指体力或脑力方面的能力。
eg:I can play basketball.我会打篮球。
(2)表示允许,意为“可以;能够”。
eg:You can't go now.你现在不能走。
(3)表示委婉地邀请或向别人征求意见。
eg:Can you come to my house?你能到我家里来吗?
(4)表示推测,意为“可能”。
eg:This can't be true.这不可能是真的。
can在表示邀请时的用法
当用情态动词can发出邀请时,要用其一般疑问句形式:Can you/he/she/they
十动词原形?can在此句型中表示请求的语气,意为“能;可以”。
表示接受邀请,可以说“Sure,I'd love to..”,意为“当然,我很愿意。”其中to
不可以省略;或“Sure,I think he/she/they will..”,意为“当然,我想他/她/他们会
的。”
P表示拒绝邀请时,可以用Sorry,Ican't.,表示委婉拒绝,再用'I have to十v.”
或“be十v.-ig”结构表达必须得做什么或要去做什么来说明理由。替他人拒绝时,
可以回答No,he/she/they can't.然后再用“He/She/They have(has)to”或“be+v.-ing”
来说明理由。
【注意】can在邀请中可以用coud代替,其语气更委婉。
一、根据问句或答语及括号内所给提示语,完成下列对话。
1.-
Can you play volleyball with me
(can,play volleyball,me)
-Sure,I'd love to.
2.-Would you like to go out with me tonight?
-I'm afraid not.I have to practice the piano.(afraid,have to,practice the
piano)
3.-Can Jenny go fishing with us this weekend?
-No,she can't.She might have to see her grandparents
(no,might have to,see her grandparents)
4.-
Can he go to the basketball game
(can,go,basketball game)
-Yes,he can.
5.-Can they go to summer camp?
No,they are not available.They must study for a test
(not available,must,study for a test)
二、按要求完成下列句子,每空一词。
6.Lily can finish her homework in half an hour..(改为一般疑问句)
Can Lily finish her homework in half an hour?
7.Can your parents go to the park with you this Sunday?(作肯定回答)
Yes,they can
8.Bob and Jim can go to the movies today.(对画线部分提问)
What can Bob and Jim do today?
9.I can go shopping with my mother on Sunday.(对画线部分提问)
When can you go shopping with your mother?