So whether life will continue on the earth for millions of years to come wil

问题描述:

So whether life will continue on the earth for millions of years to come wil
depend on whether this problem can be solved
分别解释一下第一个和第二个whether 为什么不能用if

whether有两个用法,一是与if可互换的条件从句引导词,一是表选择的,“是否”之意,可理解为省掉or引导的从句depend on whether this problem can be solved (or not).