as soon as 一..就.. . 用法、?造句? 请说的简单些,我初三的水平

as soon as ：(adv.)"一...就...",强调两个动作几乎是连在一起的,后接从句.
1.当主句是一般将来时时,as soon as引导的状语从句应用一般现在时；
2.当主句是过去将来时时,as soon as引导的状语从句应用一般过去时.
有时跟某些单词如与possible相连—"as soon as possible",其实是as soon as IT IS possible的省略形式,译为"尽快".
eg.
As soon as he finishes his classwork,he runs out of the class.他一做完课堂作业,就跑出了教室.
came as soon as possible.马上就来了 As soon as there is more information available.
一旦有可得到的更多的信息.
As soon as you get the order,you should set out immediately.
一旦接到命令,你应该立即出发.
As soon as she has any news,she'll drop me a line.
她一旦有什么消息,会给我写信的.

当他做主语时，主从句都表示将来时的时候，要遵循主将从现