求详细解释所有选项的区别!You _____ do what you like this evening?A.could B.can C.are able to D.can be able to求各选项的详解.

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求详细解释所有选项的区别!You_____dowhatyoulikethisevening?A.couldB.canC.areabletoD.canbeableto求各选项的详解.求详细解释所有选项的

求详细解释所有选项的区别!You _____ do what you like this evening?A.could B.can C.are able to D.can be able to求各选项的详解.
求详细解释所有选项的区别!
You _____ do what you like this evening?
A.could B.can C.are able to D.can be able to
求各选项的详解.

求详细解释所有选项的区别!You _____ do what you like this evening?A.could B.can C.are able to D.can be able to求各选项的详解.
选择 B
can 可以用来表示“能力”以及“客观的可能性”等,此处指“客观的可能性”.could 是 can 的过去式,也有上述用法,但在此处不符合,因为后面的时间this evening 是将来的时间.
be able to do 指的是“能力”,没有“客观可能性”这层含义,故不能选择C项例如：I`ll be able to speak Enlish in a few months.
D项 can 与be able to do 不能重叠使用.
误：He can be able to do it well.
正：He can (或 is able to) do it well.

从 this evening看出这句话是表示将来的，因为情态动词可以表示将来，所以用一般现在时表示将来，can不能与be able to 连用．

B
但是口语中经常用could

could 是can 的过去式不符合时态
be able to 只经过努力才能做的事
can 只能做的事

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