一……就……的英语是as soon as，具体释义如下：
读音：/ æz suːn æz /
固定搭配：as soon as possilbe尽可能早一些；As Soon As Mature尽快成熟起来；As soon as payment请尽快付款；as soon as seeing一见之下 ; 立即。
例句：
1、We'll get back to you as soon as possible.
我们将尽快再跟你联系。
2、I unpacked my bags as soon as I arrived.
我一到达就打开行李，整理衣物。
3、We'll give him a ring as soon as we get back.
我们一回来就会给他电话。