这是常用的一个句型.应该用过去完成时.
hardly had.when.
no sooner had .than...两个句型的意思是：一.就.
表示“刚……就……的倒装结构,学英语的都要知道的.
Hardly had he started to leave when it began to rain.他刚要离开,天就下起了雨.
Scarcely had he sat down when his mobile phone rang.他刚坐下,手机就响了.
No sooner had he handed in his paper than he realized his mistakes.他刚交卷就意识到出错了.这句话是什么意思呢大意：John一到机场就听到播报有关他的航班的消息。