no sooner…than的意思相当于“刚做完A这件事，就做B这件事”。其基本用法为：主语+had no sooner done…than+主语+did。使用时要注意：

1、该句型所描述的动作一般都发生在过去。2、主句谓语动词采用过去完成时，when从句的谓语动词采用一般过去时。

no sooner than例句：

1、I had no sooner reached home than it began to rain.

2、No sooner had I reached home than it began to rain.

3、I had no sooner arrived home than the bell rung.

4、She had no sooner finished her work than it began to rain.

5、We had no sooner arrived at the park than it beganto rain.