2.You could help clean up the city park. 你可以帮助清理城市公园。

　 　(1)could 是情态动词can 的过去式形式，表示过去的能力。它没有人称和数的变化，后面接原形动词。变否定句在could后加not, 变一般疑问句把could提前。

　　 The boy could ride a bike when he was seven. 这个男孩七岁时就会骑自行车。

　 　　Could you speak Japanese the year before last year? 前年你会讲日语吗？

　　　 在某些情况下，could 并不表示过去，只是表示委婉、客气的语气。其肯定答语用：Sure./Certainly./All right.等。否定答语用：Sorry./Sorry, I can’t.等。

　　 　A: Could you tell me if he is a student? 你能告诉我他是不是学生吗？

　　 B: Sure. 当然可以。

　 (2)clean up是省去to的动词不定式，意为“(把……)打扫干净”、“梳理整齐”。

　　 We must clean up the playground every morning. 他每天必须把操场打扫得干干净净。

　　　 如果在clean 和up间加个连字符号，那么，它就是名词了，表示“扫除”。

　 　　You must give your classroom a good clean-up. 你必须对教室进行彻底地打扫。

1.I’d like to work outside. 我想到外面去工作。

　　 would like 是个固定词组，意为“想要”、“愿意”。其具体用法如下：

　　 (1)would like后接动词不定式作宾语。

　　 He would like to play football with us this Sunday. 这周日他想要和我们一起打篮球。

(2)would like 后接名词作宾语。

　I’d like a glass of milk, Mum. 妈妈，我想要一杯牛奶。

(3)would like 后可接名词或代词作宾语，再接形容词、不定式或过去分词作宾补。

　I would like you to come over to my family. 我想让你来我家。

　They would like the girl happy. 他们想要这个女孩幸福。

　I would like your homework finished by 9:00, please. 我希望你的作业在九点钟前完成。

Would you like …? 是would like的一般疑问句结构，是询问“需要”的常见句型之一。在此句型中表示“一些”时，多用some 代替any，对该句的肯定答语用Yes, please.,否定答语用No, thanks.。如果like后接动词不定式，则肯定答语常用Yes, I’d like/ love to.。

　A: Would you like some apples? 你想吃苹果吗？

　 B: Yes, please.　 是的。

A: Would you like something to drink? 你想要些喝的吗？

　 B: No, thanks. 不了，谢谢！

　 A: Would you like to go to the park with us? 你愿意和我们一起去公园吗？

　 B: Yes, I’d love to. 是的，我很愿意去。

6. What kind of volunteer work would you like to do?

四 [重点难点释义](Language Points)　

5. If you see these things, or problems, what will you do?

4. I would like to fix up the desks.

3. You could volunteer in an after-school study program.

2. I’ll help clean up the city parks.

1. I’d like to work outside.

19.be similar to 与…相似　　　　　　　　 20.Clean-up Day 清节日

17.not only...but also 不但…而且…　　　　 18.not... any more 不再