Unless we deal with our problems,we can easily becone unhappy.

问题描述:

Unless we deal with our problems,we can easily becone unhappy.
其中unless的含义________,相当于________.
它所引导的条件状语从句中一般用______代替______.
改写此句的同义句:
____we___deal with our problems,we can easily become unhappy.

除非,if not
一般现在时,将来时
If,don't