所有的主从复合句，主从句的时态都得一致。一致并不意味着时态完全一样，只要从时间关系上讲得通即可。用as soon as引导时间从句时要注意“主将从现”即从句用一般现在时表将来。

as long as是介词短语，一般接句子，如：

1.As long as arranging the time reasonably,we are sure to benefit more from recreational activities.

其中的arranging，并不是说该词后加动词ing形式，arranging是句子arranging the time reasonably中的部分，是独立主格形式，它不能看作是as long as后加动名词。

2.as long as it isn't boring就是一个例子，而As long as do not rain!实际上是省略句，省略了it ，完整的用法是As long as it do not rain!

as long as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。