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