11. look for 寻找
  My pen is lost. Could you help me look for it?
  我的笔丢了。你能帮我找一下吗？
12. though == although 作连词  虽然，尽管
放在句子中间/句首，不能和but 连用
Though it was very late, he went on working. 虽然很晚了，但他还在工作
Mr. Smith , though he was young, did it very well.
史密斯先生虽然年轻，却做得很好。
13. fun n. 有趣   funny adj. 有趣的
14. be sure to do 一定做某事 肯定做某事 如：
    It is sure to snow. 肯定要下雪
    Be sure not to forget it. 千万不要忘记呀!
15. known adj. 有名的 著名的  know v. 知道 认识
16. on display 展览
17. over the years 很多年来，常与现在完成时连用如：
    Over the years, they’ve planted many trees on the hills. 多年来他们已在山上种植了许多树。
18. energy n. 活力  energetic adj. 有活力的
19. most of … …的大多数
20. keep healthy 保持健康
21. get together 聚在一起
22. discuss v. 讨论 discussion n. 讨论
23. be bad for sth. 对…有坏处的
    be bad for doing sth. 做…有坏处
24. for example 例如
25. take care of =look after 照顾 关心 如：
    She often takes care of / looks after her son.
26. stay away from 远离… 如：
    Stay away from me , I have a cold. 请远离我，我得了感冒
27. to be honest 老实说 如：
   To be honest I really like flowers. 老实说我真的很喜欢花。
28. dislike 不喜欢 反义词 like 喜欢
29. fisherman 渔夫 复数形式 fishermen
30. photography n. 摄影 photograph n. 照片 相片
photographer n. 摄影师
31. be in agreement 意见一致 常与介词on /about连用如：
   They are in agreement on that question. 他们对那个问题意见一致。
32. even if  甚至
33. mainly adv. 主要地 首要地  main adj. 主要的