If you listened to the questions carefully,you can answer them easily.为什么改成you can answer----would answer

问题描述:

If you listened to the questions carefully,you can answer them easily.为什么改成
you can answer----would answer

if表示事实并非如此,所以情态动词can要换成过去式,比如could,would

这是虚拟语气,表示跟过去的事实相反,
用情态动词加完成时态来表示.
如果你好好听了问题,就会回答起来更容易.(实际是回答起来的时候不容易.)
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