1. Unit 13 We are trying to save the earth.

2. Think about the environment in your town / city and complete the chart below. 3a 1.Which parts of the town or city have a nice environment and why? 2.Which parts may be less nice and need to be improved? Why?

3. 3a Good environmentWhy? Central park clean greenery fresh air nice to look at quiet and peaceful

4. Bad environmentWhy? Rubbish disposal areas at the bottom blocks rubbish spilling out of bins bad smells unsightly unhealthy full of pests like rats, insects, cockroaches

5. Write a letter to the city mayor about the problems and your suggestions. I think that... We should/could... I suggest... 3b

6. In your letter, describe the environmental problems in your town/city.  What are the problems?  Where are they?  What or who os causing there problems? then, give suggestions or possible ways to solve the problems. Writing tips

7. Dear Sir/Madam, I have lived in this town ever since I was born and i love this town very much. I think that there are beautiful areas in this town, but there are also areas that aren't attractive, like the rubbish disposal areas at the bottom of our apartment blocks. there is rubbish coming out of the bins, and flies, cockroaches and rats running all over the rubbish. It is unpleasant to look at, smelly, and it makes the environment very unhealthy.

8. the ploblem is there because the rubbish collectors do not come often enough to collect the rubbish. the people living here may also be throwing away too much rubbish. We could try to ask people to produce less rubblsh. I sugest that rubbish collectors collect rubbish more often as well. I believe that a better environment can be created in this town and we could all work together to acheive it. Your faithfully, Wang Xi

9. 1.Circle 可数名词，意为 “ 圆圈 ” ，也可表示 具有共同兴趣爱好或职业等的 “ 阶层；圈子； 界 ”.e.g. The children stood in a circle around the fire. He is well-known in theatrical circles. Circle 还有动词的意思，表示 “ 圈出 ” 。 Please circle the correct answer. Language Points

10. 1.Not only… but also… 意为 “ 不但 … 而且 …” 遵循一下三个原则 (a) 并列连词，连接两个并列成分，其中 also 可以省略。 (b) 主谓一致原则： not only…but also.. 连接两个 主语时，谓语动词在人称和数上要与 but also 的主语保持一致。 Language Points

11. (c) 倒装原则： not only…but also… 连接两个 并列分句时， not only 置于句首，表示强 调，其引导的句子要用部分倒装，即将谓 语动词的一部分 ( 情态动词，助动词等 ) 放在 句子的前面，而 but also 后的句子用正常语 序。 Not only he but also I am interested in pop music. Not only do I feel good about helping people, but also I get to spend time doing what I love to do.

12. ⑴ need doing=need to be done " 需要被 …" 现在 分词 doing 表被动 “ 需要被做 ” ，相当于 need to be done 。 My watch needs repairing. =My watch needs to be repaired. 我的表需要修了。 ⑵ need 后加不定式，证明 need 为实义动词，而 非情态动词，这时 need 有人称和数的变化。 He needs to get up early. 他需要早起。 辨析： need to be done; need doing 与 need to do

13. 例句： Something is wrong with my car. It needs _____. A. repairB. to repair C. repairing D. to be repair 解析： need to be repair= need repairing, 表示头发该收拾了。

14. cause 用作动词，当 “ 引起，造成，使得 ” 讲。一般指引 起或造成不好的结果。 cause sb. sth.= cause sth. to sb.( 后接间接宾语 + 直接宾 语 ) 为固定用法。 He caused his parents much trouble.= He caused much trouble to his parents. 他给父母带来很多烦恼。 例句： It caused him lots of worries. It caused lots of worries ____ him. to

15. 自我练习

16. I. 用方框中词的适当形式完成下面的句子。 1. Mr. Wang is the _________ of the company. 2. The young man likes Lu Xun’s ______. 3. Could you please give me a ______ of water? 4. Tom! Someone is waiting for you at the school _____. 5. We should ______ garbage, not burn it recycle, gate, bottle, president, work president works bottle gate recycle

17. II. 单项选择。 1. —Your coat looks nice. —It’s made ____ cotton. And it was made ____ Shanghai. A. in; by B. from; by C. by; in D. of; in 2. —____ he ____ I have been to Beijing. —Really? When did you do there? A. Not only; but also B. Neither; nor C. Either; orD. Too; to 3. The old city walls are dangerous. So they will be _____ soon. A. pulled downB. pulled out C. pulled overD. pulled off

18. 4. The old man built himself a house ____ wood. A. out ofB. in to C. to useD. in for 5. They decided to ____ a small business to make some money. A. set upB. put up C. take up D. go up

19. 1. I will take my ______ examination next week, and then I will leave university. 2. He got up early this morning so that he could ______the early bus. 3. There is too much _____ in this class. I can’t hear you clearly. 4. The box is so heavy that he can’t______ it. 5. The little boy likes to see tigers and ________ in the zoo. catch noise monkeys final left final catch noise left monkeys

20. 6. 这本书一定是李老师的。 The book _________ _________ _________ Mr. Li. 7. 弟弟用光了所有的钱买他喜欢的邮票。 My brother _________ _________ all the money to by his favorite stamps. 8. 我小时候常在这条河里游泳。 I _________ _________ _________ in the river when I as young. 9. 听，一定有人在外面说话。 _______________________________________. must belong to used up used to swim Listen! There must be someone talking outside.

21. 1.Write a letter by your own as 3b request. Homework