would have been为什么不能用在这里?Without electricity human life ________ quite different today.A.is B.will be C.would have been D.would be 答案为什么是D而不是C?would have been不是应该表示应该发生而没有发生的事情

if they had starded earlier than expect,they would be here nowwould be 为什么不能换成would have been he never expected that he would ______president of his country答案是have been elected为什么不能选be elected 一道单选must have been 和would have been的区别?Jack described his father, who _______a brave boy many years ago, as a strong–willed man A. would be B. would have been C. must be D. must have been 我不能理解为什么不能用would表示 would have been的 总结 We would have been very ___ in school again,I ___ harder.A.Were I; would studyB.I were; would studyC.If I were; woud have studiedD.If I had been; would study为什么不能选C? have been keeping doing 为什么错了是因为have been后面不能加状态么 their suggestion has made the design better than it (would otherwise have been)would otherwise have been为什么不能用would be otherwise 英语问题!急救!I would gone here with you but I___too tried then.A.were B.had been C.was D.have been为什么不能选择B。。虚拟。。。不是有IF的么。。 were it not for the adoption of the open policy ,things ___they are today.A would never be B would never have been 为什么不能选a,请告诉我具体原因, You didn't do it but it would have been the right thing to do这里的have been,为什么要用have been?u33 请问这句不能选A或B的理由,为什么选CWere it not for the adoption of the open policy,things ______ they are today.a.would never be b.could have been c.would never have been d.didn’t have they have already been opened been 和already不能颠倒吗为什么 We ___ our lives had it not been for the policeman.A.would have lost B.should lose C.might lose D.could have lost为什么不能选D I would have paid a visit to you____possibleif it were would it be had it been should it have been选什么为什么 英语语法 ...would have been 后面加什么? would have been completed表示什么时态? we would have been very good