ter been bought ? Have they been sent abroad to study English?4.现在完成时被动语态特殊疑问句句型:疑问词+ have /has + 主语+ been+过去分词...?Where has the car been repaired?Who have been helped by the puter? How many buildings have been built in this school? ?The present perfect passive voice(疑问句):8WorkersWorkershave builthave builtthe housethe house since two years ago. since two years ago. since two years ago. since two years ago.Exercise 1: Change the sentences into the present perfect passive voice动作的执行者动作的承受者谓语动词The houseThe househashasbeenbeen built builtby workers91 We1 Wehave receivedhave receivedmany lettersmany letters since last week. since last week.Many lettersMany lettershave been receivedhave been receivedsince last week.since last week.Change the sentences into the present perfect passive voice10
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