神马作文网英语情态动词选择,说明理由
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英语情态动词选择,说明理由
Thank you for all your hardworking last work.i don't think we___it without you
1can have managed
2could have managed
（选1,为什么）
What a pity ,he ___better
1must have done
2might have done
3can have done
（选2,原因?）
还有can/couldn't have done,和should have done 有什么区别
would have done 一般用于什么情况,举个例子说明一下
Thank you for all your hardworking last work.i don't think we___it without you
1can have managed
2could have managed
（选1,为什么）
What a pity ,he ___better
1must have done
2might have done
3can have done
（选2,原因?）
还有can/couldn't have done,和should have done 有什么区别
would have done 一般用于什么情况,举个例子说明一下
1 否定句中表示猜测,用can
主句和从句时态一致,只能用can
2 what a pity 很遗憾 表示不好的事情
表示可能性最弱的一种猜测 用might
must 是肯定的猜测
can 做猜测,不能用于肯定句
情态动词的用法就和一般的动词一样的,就取其字面上的意思
情态动词的完成时 一般多用于虚拟语气 对过去事情的假设
If there had been a civil war,we would have won
主句和从句时态一致,只能用can
2 what a pity 很遗憾 表示不好的事情
表示可能性最弱的一种猜测 用might
must 是肯定的猜测
can 做猜测,不能用于肯定句
情态动词的用法就和一般的动词一样的,就取其字面上的意思
情态动词的完成时 一般多用于虚拟语气 对过去事情的假设
If there had been a civil war,we would have won