题目内容
【题目】根据对话内容从方框中选择恰当的句子将对话补充完整。（选项中有两项是多余的）
Tony: Hi，Joy. Would you like to help to save the environment？
Joy: Of course I'd like to.【1】
Tony: Well，first，you can start by turning off the lights.
Joy: Yes. That's easy. Sometimes I tum on the lights without thinking. What's next？
Tony: Second，listen. 【2】 Don't take a bus or a taxi if you don't have to.
Joy: That will save money，too.【3】
Tony: 【4】
Joy: Mm，newspapers，magazines. . We get a lot of paper at home. Good idea.
Tony: And last，take a bag when you go shopping.【5】
Joy: OK. My parents do most of the shopping. I'll tell them.
A. You'd better ride a bike when you go out.
B. How will you do that？
C. But what would you like me to do？
D. You mustn't use plastic bags.
E. What else？
F. I hope you can have a good time.
G. Try to recycle paper.
A. You'd better ride a bike when you go out.
B. How will you do that？
C. But what would you like me to do？
D. You mustn't use plastic bags.
E. What else？
F. I hope you can have a good time.
G. Try to recycle paper.
【答案】
【1】C
【2】A
【3】E
【4】G
【5】D
【解析】
这篇对话是谈论如何解救环境的，主要涉及一些具体措施.
【1】句子选择题。根据答语Well，first，you can start by turning off the lights.可知，你可以从关灯做起，所以上文是说我能做什么，故选C
【2】句子选择题。根据下文Don't take a bus or a taxi if you don't have to.可知，除非迫不得已，否则不要坐公交和计程车，所以这里是说和绿色出行有关的，故选A
【3】句子选择题。根据上文That will save money，too.可知，谈论完绿色出行，接下来还需要做什么，故选E
【4】句子选择题。根据答语Mm，newspapers，magazines. . We get a lot of paper at home.可知，这里是和节约用纸有关，故选G
【5】句子选择题。根据上文And last，take a bag when you go shopping.可知，购物时自己带包，所以是不能用塑料袋，故选D
must是情态动词，直接加动词原形，若出现must to be done 的话，就是表示被动，意为“必须被做……”
一、表“必须”。
You must talk to them about their study.你必须同他们谈谈关于他们学习的事。
二.在否定结构中表不许。
You mustn't leave here.你不能离开这儿。
三.表坚定的建议。
You must come and see us as soon as you get to Shanghai.一到上海你得马上来看我们。
四.表推测，暗含有很大的可能性，用在肯定句。
He must be ill. He looks so pale.他肯定是病了。他的脸色那么苍白。
