Simoneif引导从句有哪几种？
的有关信息介绍如下：if引导从句如下：
1、He will come if you invite him.
如果你请他，他会来的。
2、I wonder if she is ill.
不知她是否病了。
3、If I were you, I would never do that.
如果我是你，我决不做那件事。
4、I will tell him about it as soon as he comes back.
他一回来我就告诉他这件事。
5、I don't know if he will come tomorrow.
我不知道他明天是否回来。
