1.as long as其实有三个意思：
1) 只要 = so long as = while
如：You'll succeed as long as you work hard.
只要你好好学习,你就会成功的.
2）(长度上)和...一样长 / 长至...(程度)/ 长达...
如：The room is as long as 10 meters.
这个房间长达10米.
3）(时间上)和...一样久 / 久至.../ 长达...
如：I've lived here as long as 20 years.
我在此处居住长达20年之久.
2.
as soon as 一...就...,引导
时间状语从句.
此时
主从句或者遵循“主将从现”的原则,或者都用
一般过去时.
如：1）I'll call you as soon as I arrive there.
我已到达那儿,我就会给你打电话.
2）As soon as the thief saw the policewoman,he ran away at once.
那个小偷一看就那名女警,他就立马逃之夭夭了.