as soon as 前后时态

1Mike will come to play with us as soon as he finishes writing the composition.2 The baby had smiled at his mother as soon as he saw her.为什么两句话里as soon as 前后连接的时态不一样？

主语＋will do sth + as soon as + 主语＋do sth.
主语＋did sth + as soon as 主语＋did sth.
所以我觉得你第二句最好还是前后都用过去式

as soon as 翻译为"一...就..."所以动作一般有个先后顺序.
注意
1.第一个用法中只有主句用将来时,或者带有情态动词,或者祈使句时后面的才是一般时代替将来时
2.这里：as soon as 可换成：the moment/the minute/the second 或 directly/immediately/ instantly.
3.on/upon one's doing=as soon as sb do

as soon as引导时间状语从句 翻译为"一...就..." 简单说来遵循：主将从现，主过从过 第一句是主将从现，即主句Mike will come to play with us用将来时，从句he finishes writing the composition用过去时，表明这件事以现在为基点，为了使时态前后一致（现在时与将来时一致），就采用主将从现。 第二句是主过从过，即主句The baby had smiled at his mother 用过去时，从句he saw her也用过去时，表明这件事以过去为基点，为了使时态前后一致（过去时与过去时一致），就采用主过从过。 P.S：由于第二句中as soon as 一般都接瞬时性的动词，所以没有严格的先后顺序，所以不能用had done,原句应改为： 2 The baby smiled at his mother as soon as he saw her.才对 你的这个问题的本质还是时态的前后一致性，希望我的回答能给你启发，谢谢！

你说的完全正确。主句是将来时，as soon as从句用一般现在时表示将来；如果主句是一般过去时，那么从句也用一般过去时。he closed the door as soon as he came here.

如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！

点此我要举报以上问答信息