12. He goes skiing every chance he gets.他一有机会就去滑雪。
举一反三：I practice my spoken English every chance I get. 我一有机会就练习我的英语口语。

13. He's always been enthusiastic about sports. －他一直对运动很热衷。

Be enthusiastic about sth: 对某事很热衷，热爱
比较口语化的表达方式还有： be crazy/nuts about something/somebody He's crazy/nuts about basketball.他热爱篮球。

14. Shouldn't she concentrate on doing her school work instead? Concentrate on doing something. 集中精力做某事。

15. At least it is a diversion from my normal course work. I'm getting tired of math. "至少这可以让我暂时撇下我的正常的课程工作。我已经对数学感到厌倦了。"

Diversion这里时指分散精力的东西。 Get tired of something 又为"get sick and tired of something"是指对某事感到开始感到厌倦。

16. It would be better to talk about it face to face.
It would be better to do something 这个句型是虚拟语气 （would），常用来提建议。"这样做会更好"
Face to face : 面对面

In person:亲自 It would be better to tell him in person. 亲自告诉他比较好。

17. Would you mind if I sat here? -Of course not.

Would you mind if I did something? If从句中用过去时表示客气。
也可以不用过去时。回答Would you mind?一定要小心，如果你介意就答"yes"， 不介意就答"No" "Of course not."

18. So you're going to give us a ride to the game tonight? 你今天晚上会车我们去看比赛？
Give sb a ride－用车载某人一程。

19. You haven't written your folks for a quite a while, have you?
Folks在口语中的意思是"父母"

20. Marilyn seemed happy with her grades. - Happy? She could hardly contain herself.
Grades是指成绩。在国外打分通常给A,B,C,D.

I made good grades in high school. -我读高中时成绩很好。

Contain oneself -控制自己的情绪，感情

e.g. I was so angry that I couldn't contain myself. 我气得不能控制自己的情绪

21. Maybe I ought to subscribe¹ to the Engineering Quarterly.
Subscribe to 订阅 I've subscribed² to China Daily. 我订了中国日报。

Quarter有好多意思。可以是"季度"，或是"一刻钟"，或是25美分，或是"四分之一"。
Quarterly -季报 Daily －日报
Weekly －周报 Bi-Weekly－双周报 Monthly －月报

22. Allen has done some beautiful drawings of his dream house.
Dream house梦想中的房子。Dream job- 心目中理想的工作
Dream car－做梦都想要的车
Dream girl (the girl of my dreams) - 梦中情人，心中理想的女孩