He walked to the office and then(D )the door.【为什么不选A,选D呢】
问题描述:
He walked to the office and then( D )the door.【为什么不选A,选D呢】
A.knocked B.hit C.answer D.knocked at
Your needn't( )on your own【不理解为何选的是B选项】
A.came B have come C.to come D.to have come
Tell me ,( )she finish the tasks right now?【为什么不选A,选D呢】
A.needs B.needed C.has needed D.need
He was ( )moved by the story of the teacher【这句话意思看不懂】
A.final B.eventually C.deeply D.deep
答
1、knock表示敲门的时候与at是固定搭配2、needn't have come 表示的是你应该这么做但是现实是你并没有这么做,语法是情态动词should或need 等+ have +done3、need这里是情态动词,相当于should,所以不能加s4、这句你如...