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.
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.
问题解答：
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