重点讲解：
1. in debt
负债（状态）；
eg. He was already deeply in debt through gambling losses.
他原就已经因为赌博输钱负债累累了。
eg. The board has so misconducted the company that it's deep in debt.
由于董事会对公司管理不善，公司负债累累。
2. have confidence in
信任；信赖；
eg. I have every confidence in you.
我完全相信你。
eg. I have confidence in the ability of the players.
我对于球员们的能力充满信心。
3. how come
（用于因为惊讶而询问）怎么会这样呢，为什么；
eg. How come he hasn't been able to be as good this year?
为什么他今年表现不及往常呢？
eg. How come he got the job?
怎么他会得到这个职位呢？
4. turn down
拒绝（某人或其请求、提议等）；
eg. I thanked him for the offer but turned it down.
我谢绝了他的提议。
eg. She turned down every offer of help.
别人提出的帮助他她都拒绝了。