例1 I learned that her father in 1950. A had died B died C dead D is dead 解析:该题正确答案为B.从句中的谓语动词动作虽然发生在主句谓语动词的动作之前.但因从句中有明确的过去时间状语in 1950, 所以不用过去完成时态.而用一般过去时态. 例2 The five-year-old girl by her parents. A is looked B has looked for C is being looked for D has been looked 解析:该题正确答案为C.在带有介词的动词短语用于被动语态句中.介词不能省.否则就变成了不及物动词短语.而不能用于被动语态的句子中. (五)动词虚拟语气 【查看更多】
