有。as可以引導(dǎo)時間狀語從句，此時as譯作“當(dāng)……時候”，可以放在主句之前，也可以放在主句之后。as可以引導(dǎo)原因狀語從句，此時as譯作“因為，由于”，一般放在句首，語氣較弱，較口語化。

as long as 是介詞短語，一般接句子

1.As long as arranging the time reasonably,we are sure to benefit more from recreational activities.(08年6月CET-4里的.)

其中的arranging ，并不是說該詞后加動詞ing形式，arranging 是句子arranging the time reasonably中的部分，是獨(dú)立主格形式，它不能看作是as long as后加動名詞。

2.as long as it isn't boring就是一個例子，而As long as do not rain!實際上是省略句，省略了it ，完整的用法是As long as it do not rain!至于什么時候省略，隨著英語學(xué)習(xí)的加深，自然能夠形成這種語感。

as long as其實有三個意思：

1) 只要 = so long as = while

如：You'll succeed as long as you work hard.

只要你好好學(xué)習(xí),你就會成功的.

2）(長度上)和...一樣長 / 長至...(程度)/ 長達(dá)...

如：The room is as long as 10 meters.

這個房間長達(dá)10米.

3）(時間上)和...一樣久 / 久至.../ 長達(dá)...

如：I've lived here as long as 20 years.

我在此處居住長達(dá)20年之久.

as long as有三個用法:

1.During the time that (在這段時間):I'll stay as long as you need me.

2.Since (既然) :As long as you've offered,I accept.

3.On the condition that (條件是):I will cooperate as long as I am notified on time.