If you want to grow a beard you must stop shaving.

问题描述:

If you want to grow a beard you must stop shaving.
如果你要留胡须,你就别刮它.
beard后面是不是得加个that引导词啊?

不要啊.IF是从句.可以倒装一下就好理解了
You must stop shaving if you want to grow a beard