一、词组
1. keep our city clean保持我们的城市整洁
2. look at these pictures of our city看我们城市的这些图片
3. make our city dirty 使我们的城市变脏 4. smoke from cars汽车尾气
5. make the air dirty使空气变脏 6. black smoke from factories来自工厂的黑烟
7. make the streets messy使街道变乱 8. in the water在水里
9. take the bus and the metro to school乘公共车和地铁上学
10. walk to school走路上学
11. move some factories away把工厂搬走 12. put rubbish in the bin把垃圾放进垃圾箱
13. plant more trees种更多的树 14. help keep the air clean有助于保持空气洁净
15. your ideas你们的主意 16. well done干得好
17. throw rubbish on the floor 把垃圾扔在地上 18. walk home 走回家
19. after school放学后 20.live in the city 住在城里
21. clean and beautiful又干净又漂亮
22. throw a banana skin on the ground把香蕉皮扔在地上
23. eat bananas吃香蕉 24. do that那样做