i am surprise that he ( ) in the exam,为什么不用should fail 而用 should have failed
问题描述:
i am surprise that he ( ) in the exam,为什么不用should fail 而用 should have failed
答
这里should have done一方面表示时态上的过去,因为考试是过去的事了.另一方面用作虚拟语气,表示惊讶.