李明不是在家里就是在学校

Li Ming is either at home or at school.

别的例句：

1. You know, it's going to be either or - stay at home and do it quietly, or go out with a big bang.

你知道，要不就在家里自己安静的过，要不就和一大群的出去过。

2. We don't allow students to smoke either at school or at home.

我们不允许学生们在学校或在家里吸烟。

3. You may either stay at home or go out for a walk.

你可以或者呆在家里或着出去散步。