请求详解：Nancy's gone to work but her car's still there.she___by bus.为什么用must have gone?A.must have gone B should have gone.C ought to have gone D could have gone.虚拟语气怎么掌握啊,
问题描述：
请求详解：Nancy's gone to work but her car's still there.she___by bus.为什么用must have gone?
A.must have gone B should have gone.C ought to have gone D could have gone.虚拟语气怎么掌握啊,
答
表示对过去发生的事肯定的推测用must have done
答
A.must have gone
答
Nancy has gone to work but her car's still there她已经去工作了但是车还在那must have gone 表示肯定的猜测 （她肯定是坐公交车去的） should have done / ought to have done 都表示本来应该could have done 本...
答
must have done表示对过去事情的推测，她肯定是做公车去的
should have done /ought to have done都表示本应该，虚拟。
could have done 表示本应该，虚拟