ifthat引导什么从句

　　If that is the case, we need more staff.

　　如果真是那样，那我们就需要更多的'员工了。

　　If that's what you think, you're way off base.

　　你如果那么想就全错了。

　　I'd rather email than phone, if that's OK by you.

　　如果你认为可以的话，我想发电邮而不打电话。

　　I could cook your supper, though, if that would help.

　　不过我可以给你做晚饭，如果这样能帮到你的话。

　　The President said he was willing to stand aside if that would stop the killing.

　　总统说，如果他下台能让杀戮停止的话，他愿意这样做。