as soon as后面跟什么时态？

as soon as 引导的是时间状语从句,表示“一...就...”。As soon as如果表将来发生的动作，主句用将来时，as soon as 引导的从句要用一般现在时，即“主将从现”原则。指过去发生的动作的话，主句和从句都要用过去时。
1.as soon as 可以表将来的事：这时主句用一般将来时，从句用一般现在。(主将从现)
例：我一见到他就会告诉他这个消息。
As soon as I see him I will tell him the news.
2.as soon as引导时间状语从句当主句用一般过去时时，从句中用一般过去时或过去完成时。
例：晚会刚一开始他就离开了。
As soon as the party began/had begun he left.

as soon as后一般跟一般现在时和一般过去时。

因为词组的意思是：一……就……，引导时间状语从句。在时间状语从句中，主句用一般将来时,从句用一般现在时。as soon as如果表示过去的状态，后面就要用一般过去时。

指未发生的动作，规律是：主句一般将来时，从句用一般现在时代替一般将来时

如：I will tell him the news as soon as he comes back。

注：有时，为了特意表达刚刚完成某事就如何如何，需要用现在完成时。

如：I will go with you as soon as I have washed my face.

句法结构

肯定形式

主语+动词过去式+其它

例句：She came to help us in those days．

否定形态

主语+didn't +谓语动词原形+其它

在行为动词前加didn't，同时还原行为动词

例句：I didn't know you like coffee.

以上内容参考：百度百科-一般过去时

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