重点讲解：
1. and then some
而且还远不止此；
eg. It cost me a week's salary and then some.
它花去了我一个星期的工资还要多。
eg. This project will take all our skill and then some.
这个工程将采用我们所有的技术，而且远不止此。
2. stay in
（晚上）呆在家里，没外出；
eg. The doctor advised me to stay in for a few days.
医生嘱我在家休息几天。
eg. It was raining; they had to stay in the inn the whole day.
下雨了，他们不得不在旅馆里待了一整天。
3. to be honest
老实说；说实在的；
eg. To be honest, I'm not satisfied with it.
说实话，我不太满意。
eg. To be honest,I'm not all that optimistic we will pass the exam.
老实说，我对我们能否通过考试不那么乐观。
