_______finished his homework than the boy was asked to play the piano.

therigh

热心网友

ｔｈａｎ从句里的事情发生在过去，而ｆｉｎｉｓｈ他的ｈｏｍｅｗｏｒｋ发生在这个过去的过去，所有是ｈａｄFYI

热心网友

在no sooner...than/hardly...when引导的句子中要用过去完成时，并且no sooner/hardly位于句首时要求倒装。所以应该是____No sooner had he___ finished his homework than the boy was asked to play the piano.

热心网友

整句话讲的都是过去的事情，所以时态应该一致。既用过去完成时，不用现在完成时。