They would not live without him 还是they can not live without him

问题描述:

They would not live without him 还是they can not live without him
哪个说法对 好像都有用的
they can not live without him表示的是什么呢

前面语气委婉,后者语气肯定.
they can not live without him
没有他,他们就不能活