英语问题thatwaswhyhedareddoso.为什么dare的过去式后面不接完成时havedone呢

Question

英语问题
that was why he dared do so.
为什么dare的过去式后面不接完成时have done 呢

Answer 1

不太理解你的意思,你是说“that was why he dared have done so?”
如果你想表达的是这个,这句话是不顺的.
dare do somthing或者dare to do something 有这两种说法,意思都是“敢于做……“
如果说否定句的时候,你却只可以说dare not do something,或者don't dare (to) do
have done是一个完成时,你不可以说 ”他敢于已经做了什么“.
但你若想表达这种意思,可以说”他已经敢于做了什么“
that was why he has dared (to) do so.