It seemed that he ________ something expensive.A.have lost B.lost C.had lost D.had losted

问题描述:

It seemed that he ________ something expensive.
A.have lost B.lost C.had lost D.had losted

lost 是在seem之前发生的,而seem又是过去式,过去完成时表示“过去的过去”,所以用C

C是过去完成时,意思是过去已经丢失的某些重要物品

答案选C 过去完成时因为 动作发生在 主句动词 之前
原句= he seemed to have lost something expensive