Can/Could you please句型的用法

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Can/Could you please句型的用法

Can/Could you please句型的用法
Can/Could you please句型的用法

Can/Could you please句型的用法
could的否定形式是could not,多缩写为couldn't,
(1)表示能力,意思是:能,会.
Could you speak English then?那时你能讲英语吗?
He said he couldn't follow me.他说他跟不上我.
(2)表示可能性,意思是:可能.
That big cinema can seats 2,000 people.那家大电影院能坐2,000人.
He said he couldn't come.他说他不能来.
(3)提出请求、疑问或看法(could是虚拟语气,代替can,在时间上与can没有区别,只是语气比can委婉.can语气直爽、肯定).
----Could you let me have your passport?
----Yes,here it is.
(4)表示惊异、不信等情绪(用于疑问和否定句中,此时could与can用法相同,无时间上的差别,用could语气缓和,情绪要弱).
Who could have taken them?谁会把它们拿走了呢?
She couldn't have left so soon.她不可能这么快就走了.
(5)表示与事实相反的情况(用于虚拟语气).
I would certainly do it for you if I could.要是我能做得到,我一定会为你们做这事儿.
How I wish I could go with you!我多么希望和你们一道去!