no sooner…than 它的意思相当于“刚做完A这件事,就做B这件事”.例如：He had no sooner returned than he bought a house.他一回来就买了一套房子.如果no sooner 位于句首,主句要用倒装结构.例如：No sooner had he arrived than he went away again.他刚到就又走了.No sooner had the game started than it began to rain heavily.运动会刚开始,天就下起了大雨.有一点要注意,no sooner…than 一般用来描述做过的事情,它不能用于表示将来的事.hardly…when...它的意思是“几乎未来得及做完A这件事,紧接着就开始B这件事.” 使用这个短语时,一般用于过去完成时；并且when有时可改用before.例如：He had hardly finished the article when the light went out.他刚写完文,灯就熄了.He had hardly had time to settle down when he sold the house.他还未安顿下来,就卖掉了那所房子.另外,如果把hardly放于句首,主句要用倒装结构即谓语动词要提前.如：Hardly had I finished eating when he came in.我刚吃完他就进来了.Hardly had she gone out when a student came to visit her.她还没走出家门,就有一个学生来看望她.
