Unit 3 Teenagers should be allowed to choose their own clothes.编 稿：赵吉存 审 稿：杭海 责 编：夏芳莲目标认知重点词汇：1. silly 愚蠢的、傻的 2. pierce 刺穿、刺破3. license 执照、许可证 4. concentrate 集中、聚集5. design设计、构想 6. present现在7. volunteer 志愿、志愿者 8. member 成员9. opportunity 机会、时机 10. mess混乱、杂乱11. sleepy 困倦的、不活跃的 12. reply 回答、答复13. importance 重要、重要性 14. achieve 实现、完成15. succeed成功、达到、完成 16. point 要点重点词组及句型：1. stay up熬夜 2, instead of 代替3. clean up 清除 4. part-time job 业余工作5. get their ears pierced 扎耳朵眼 6. get in the way妨碍7. be strict with 严格要求 8. learn from向学习9. be serious about 对认真 10. at present 目前1. Teenagers should be allowed to choose their own clothes. 应该允许青少年自己选择衣服。2. I dont think twelve-year-olds should be allowed to get their ears pierced. 我认为12岁的青少年不应该允许扎耳朵眼。3. He should stop wearing that silly earring. 他应该别戴那无聊的耳环。 4. He needs to spend time with friends. 他需要花一些时间和朋友在一起。5. They arent serious enough at that age. 在那个年龄，他们不够认真。6. He doesnt seem to have many friends. 他似乎没有许多朋友。7. We have a lot of rules at home.在我们的家里有许多家规。 So do we. 我们家也是。8. The other day, my friends and I talked about the rules that we have at school. 前几天，我和朋友们谈论我们学校的规定。9. The problem is that all my classmates think the uniforms are ugly. 问题是我们全班同学都认为校服太难看了。10. It would be a good experience for me because I want to be a doctor when I am older.对我来说，那将是一个很好的经历，因为我长大以后想当一名医生。11. Teenagers often think they should be allowed to practice their hobbies as much as theywant. 青少年经常认为他们应该被允许尽可能多地按照他们想要的去实践他们的爱好。12. That would be a good way to keep both teachers and students happy. 那将是一个让老师和学生都愉快的好办法。13. I cant choose which pair of jeans to buy. They both look good on me.我不能选择要买哪一条牛仔裤，两条都适合我。14. Of course we want to see Liu Yu achieve his dreams. 当然我们希望看到刘裕实现他的梦想。日常用语：1. I think teenagers should be allowed to choose their own clothes. 我认为应该允许青少年选择他们自己的衣服。2. I dont think sixteen-year-olds should be allowed to drive. 我认为16岁的青少年不应该被允许开车。3. Do you ever get to class late? 你曾经上课迟到过吗？ Yes, I sometimes get to school late. 是的，有时候我上课迟到。4. Please clean up the classroom. 请打扫教室。精讲巧练1. Teenagers should be allowed to choose their own clothes. 应该允许青少年自己选择衣服。（1.）should be allowed是含有情态动词的被动语态。它的结构是：情态动词be过去分词。例如：The work can be finished in two days. 这件工作可以在两天后完成。它的否定形式是在情态动词的后面加not。例如：Smoking cant be allowed in the classroom. 吸烟在教室里是不被允许的。一般疑问句是把情态动词提到句子开头。例如：Can your work be finished today? 你的工作今天能完成吗？（2.）动词短语allow somebody to do something的意思是“允许某人做某事”。例如：My parents allow me to go swimming after school. 我的父母允许我放学后去游泳。随时练【考例】Your homework _ after class.A. must hand in B. be handed C. must be handed D. must be handed in【答案与解析】答案是D。本句子的主语homework不是后面动作hand in的执行者，所以用被动语态，从句子的意思理解是用含有情态动词must的被动语态表示“作业课下必须上交”的意思。2 I dont think twelve-year-olds should be allowed to get their ears pierced. 我认为12岁的青少年不应该允许扎耳朵眼。（1.）twelve-year-olds是指twelve-year-old boys/girls。例如：Well have a two-week vacation. 我们将有两个星期的假期。（2.）get ones ears pierced的意思是“某人扎耳朵眼”。getsomethingdone含有被动语态的意思。例如：Your brother got his glasses broken when he was running. 当你的弟弟跑的时候把他的眼镜摔坏了。随时练【考例】You had better get your bike _ if you want to there by bike.A. to repair B. repair C. repairing D. repaired【答案与解析】答案是D.本句子是开车动词短语get名词过去分词表示“请别人做”的意思，有被动的意思。3. He should stop wearing that silly earring. 他应该别戴那无聊的耳环。（1.）动词stop的后面可以用动词不定式也可以用动名词作宾语。stop doing表示“停止正在做的事情”；stop to do表示“停下来开始做”的意思。例如：Now lets stop reading. 现在咱们停止读书。Our teacher stopped to look at the boy. 老师停下来看了看那个男孩。（2.）stop还可以构成短语stop somebody/something from doing something表示“阻止某人做某事或者阻止某事发生”的意思。例如：The trees and grasses can stop the wind from blowing the earth away. 树和草可以阻止风把土吹走。（3.）cant stop doing 的意思是“忍不住做某事”。例如：The boy cant stop eating in class.那个男孩在课堂上忍不住地吃起来。随时练【考例】You should stop your brother from _ others homework.A. to copy B. copying C. copy D. copies【答案与解析】答案是B。本句子是考查动词短语stop somebody from doing的用法，它的意思是“阻止某人做某事”的意思。4. He needs to spend time with friends. 他需要花一些时间和朋友在一起。need在本句子中是实义动词，它的意思是“需要”。后面可以用名词或者动词不定式作宾语。例如：We need a new bike now. 我们现在需要一辆新自行车。need还可以是情态动词，它的意思是“必须”，后面用动词原形，一般用在否定句和疑问句中。例如：You neednt worry about me. 你不必为我担心。need的后面还可以用动名词作宾语，即need doing，它的主语往往是某物，表示被动语态的意思，也可以用动词不定式的被动语态形式。例如：My bike needs repairing.My bike needs to be repaired. 我的自行车需要修理了。随时练【考例】Our house needs _ again. A. repair B. to repair C. repairing D. repaired【答案与解析】答案是C。本句子的主语house是某物与后面的谓语动词是被动关系，应该用动名词或