if语句的用法及举例说明（if语句的三种基本形式）

1.If I was in charge, I'd do things differently.假若由我负责，我不会这样办事的。

2.If that is the case, I'll agree.假若情况是这样，我就同意。

3.If I have time, I will go.假若我有时间，我就去。

4.But if you need anything, day or night, you feel free to call me.无论何时只要你有任何需要给我打电话。