the light is out in her room;she ()to bed.为什么括号中用must have gone呢、.而不用must go?他起床怎么确定他是现在起床的还是过去起床的呢?求讲解

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the light is out in her room;she ()to bed.为什么括号中用must have gone呢、.而不用must go?他起床怎么确定他是现在起床的还是过去起床的呢?求讲解

the light is out in her room;she ()to bed.为什么括号中用must have gone呢、.而不用must go?他起床怎么确定他是现在起床的还是过去起床的呢?求讲解
the light is out in her room;she ()to bed.为什么括号中用must have gone呢、.
而不用must go?他起床怎么确定他是现在起床的还是过去起床的呢?求讲解

the light is out in her room;she ()to bed.为什么括号中用must have gone呢、.而不用must go?他起床怎么确定他是现在起床的还是过去起床的呢?求讲解
你好,火是现在灭的 is out, 她如果没睡的话会继续生火或者不让火灭了,也不知道她准确是在什么时候去睡的,所以只能说现在之前已经睡了,就是 must have gone.、用must go 是她一定要去睡觉的意思.还有go to bed 是睡觉不是起床. 望采纳 多谢!