英语aslongas

一、本义不同：

当 as long as 用于本义表示“与……一样长”时，as long as 可用于肯定句或肯定句。as soon as的本义是“立刻”。例如：It took three times as long as I had expected 这件事比我预料的多花了两倍的时间。

二、省略结构不同：

在用as long as连接的从句中，当其谓语为be,而主语和主句的主语相同时，则从句的主语和be可以省略。如：I'm sure we are safe as long as(we are) in his care 我深信只要在他的保护下,我们就会平安无事。

三、用法不同：

1、as soon as 表示一怎么就的意思，既可以引导时间状语从句，表过去，又可以表示将来。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。如：As soon as we found this out, we closed the ward 我们一发现此事就关闭了病房。

2、as long as 表示只要的意思，做条件状语从句。You can phone me at work as long as you don't make a habit of it 你可以上班时给我打电话，只要别一来二去打上瘾了就成。

继续补充如下：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。

as long as 的意思是只要……比如说，as long as you love me ,i can do everything for you.只要你爱我，我能为你做一切事as soon as 的意思是一……就……比如说，as soon as you get home，please call me。你一到家就给我打电话