21.　 make friends with 和……交朋友

Unit 9　 Have you ever been to an amusement park?

20.　 take an interest in = be interested in 对……感兴趣

19.　 hear of　 听说

18.　 have fun with sth.　 做某事有乐趣

= have fun doing sth.

17.　 the Olympic Committee 奥委会

16.　 make progress　 取得进步

15.　 encourage sb. to do sth.　 鼓励某人做某事

14.　 native speakers 说本族语的人

13.　 as … as　 与……一样……

12.　 in different ways 以不同的方式