15. look after???? v.? 照顧；照看
例句：John's mother told him to look after his younger brother．
約翰的母親告訴他好好照顧弟弟。

16. environment??? n.? 環(huán)境
例句：An unhappy home environment can affect a child's behaviour.
不愉快的家庭環(huán)境能影響兒童的行為。

17. pollute??????? v.? 污染
例句：Garbage pollutes our rivers and lakes.
垃圾污染我們的河川湖泊。

18. pollution????? n.? 污染
短語：the pollution of our beaches with oil 石油對我們海灘的污染

19. land??????????? n. 陸地；大地
例句：There was not much land to cultivate in the village.
那村里可耕作的土地沒有多少。

20. keep?????????? v. 保持
例句：She has kept all the letters from him.
她把他的來信全保存起來。

21. pick up???????? 撿起；拾起
例句：The children picked up many sea shells at the seashore．
孩子們在海邊拾到很多貝殼。

22. into?????????? prep.? 到…里面
例句：Throw it into the fire.
把它扔進火里。

23. rubbish bin??? n. 垃圾箱
例句：Put the carrot peelings in the rubbish bin.
將胡蘿卜皮放到垃圾箱里。

24．leave??????????? v.? 留下
例句：People had to leave their towns and villages.
人們只好離開他們的城鎮(zhèn)和村莊。

25. promise??????? v.? 承諾；保證
例句：She promised me a reward. = She promised a reward to me.
她答應(yīng)給我報酬。

26. discuss??????? v. 討論
例句：They discussed how to solve the problem.
他們商議如何解決該問題。

27. reuse????????? v. 再利用
短語：reuse an old envelope 使用舊信封