摘要：意思相当于“A事情发生以后，就做B这件事”。相对于其它两个词组来说，主从句的两件事情间隔的时间最长。eg: I’ll tell him as soon as he comes back.他一回来我就告诉他。

三者在意义上基本相同，都有“一…就…”，“刚…就…”，但它们各有其特点。

意思相当于“A事情发生以后，就做B这件事”。相对于其它两个词组来说，主从句的两件事情间隔的时间最长。
eg: I’ll tell him as soon as he comes back.他一回来我就告诉他。

no sooner...than 意为"刚做完A事，就做B事"； hardly...when"几乎未来得及做完A事，紧接着就做B事"。两者有时可以互换。

eg: I had hardly finished eating when she came in.我刚吃完，她就进来了。

= Hardly had I finished eating when he came in.

这几个词组的区别，大家都弄明白了吗？有任何疑问，都可以在下方留言。

来源：英语课堂糖姑娘