他一定是被谋杀的.英语如何说?是用must have been done
他一定是被谋杀的.英语如何说?是用must have been done
MUST have been done
must have been done must have done
must have been done/must be done
must have been与must have done的区别?
have done,have been done,have been to do我看网上说,第一个是主动语态,第二个是被
All that must be done ____(do).答案是have been done,为什么是这个答案?这句
用must have been/done或can*t have been/done 改写句子
用(can't ) ( have been/done ) (must have been /done) 改写句子
用can't have been/done must have been /done 改写句子
must have done是虚拟语气的一种吧?
have/has been done 是现在完成的被动语态