1、 Unit 7Teenagers should be allowed to choose their own clothes.Talk with your classmates about your school rules by using “students are not allowed to”.School rules Dont arrive late for school. = Students are not allowed to arrive late for school. Dont run in the hallways.School rules= Students are

2、not allowed to run in the hallways. School rulesDont eat in the classroom. = Students are not allowed to eat in the classroom.School rules Dont listen to music in the classroom. = Students are not allowed to listen to music in the classroom.School rules Dont fight with others. = Students are not all

3、owed to fight with others.School rules = Students are not allowed to cheat.Dont cheat.School rulesDont wear long hair. (boys) = Boys are not allowed to wear long hair.School rules = Students are not allowed to sleep in class. Dont sleep in class.I dont think sixteen-year-olds I agree. They arent sho

4、uld be allowed to drive. serious enough. Do you think teenagers should be No, I dont agree with encouraged to make their own this. Teenagers are toodecisions? young to make their own decisions.Teenagers should not be allowed I disagree. They can learn to have part-time jobs. a lot from working. Do y

5、ou think we may be allowed If you dont use a flash, to take some photos if we dont then it may be OK.use a flash? Grammar Focus一般現(xiàn)在時的被動語態(tài)一般現(xiàn)在時的被動語態(tài)在英語中，動詞有兩種語態(tài)，即在英語中，動詞有兩種語態(tài)，即主動語態(tài)主動語態(tài)和被動語態(tài)和被動語態(tài)。被動語態(tài)的基本結構是被動語態(tài)的基本結構是“助助動詞動詞 be + 及物動詞的過去分詞及物動詞的過去分詞”，其中其中助動詞助動詞be有人稱、數(shù)和時態(tài)的變化有人稱、數(shù)和時態(tài)的變化,其變化其變化規(guī)則與規(guī)則與be作為連系

6、動作為連系動 完全一樣。完全一樣。1.一般現(xiàn)在時被動語態(tài)的各種句式結構一般現(xiàn)在時被動語態(tài)的各種句式結構肯定式肯定式 主語主語+am/is/are+過去分詞過去分詞（ + by)否定式否定式 主語主語+am/is/are + not +過去分詞過去分詞 (+by) 疑問式疑問式Am/Is/Are+主語主語+過去分詞過去分詞(+ by )?特殊疑問詞特殊疑問詞+ am/is/are+主語主語+過去分詞過去分詞（+ by .)?被動不離被動不離“be” “p.p.”, “p.p.”前面助動前面助動be。主謂一致莫忘記，主謂一致莫忘記，am, is, are現(xiàn)在時。現(xiàn)在時。2.一般現(xiàn)在時被動語態(tài)的基本

7、用法一般現(xiàn)在時被動語態(tài)的基本用法 用法用法 示例示例表示表示經(jīng)常性或習慣經(jīng)常性或習慣性性發(fā)生的被動動作發(fā)生的被動動作I am often asked the question by my pupils. 表示表示近期近期正在發(fā)生正在發(fā)生的被動動作的被動動作These days people are moved by a teacher named Zhang Lili.描述某種描述某種常態(tài)化常態(tài)化的的被動的客觀事實被動的客觀事實The spaceship is mainly controlled by computer.強調(diào)目前存在的強調(diào)目前存在的針針對行為主體人對行為主體人的被的被 限制性動

8、作限制性動作You arent allowed to take photos.3.主動語態(tài)變?yōu)楸粍诱Z態(tài)的方法主動語態(tài)變?yōu)楸粍诱Z態(tài)的方法第一步第一步:將主動語態(tài)的將主動語態(tài)的賓語賓語改為改為被動語態(tài)的主語被動語態(tài)的主語；第二步第二步:將主動語態(tài)的將主動語態(tài)的謂語謂語改為改為“be+及物動詞的過去及物動詞的過去 分詞分詞”結構結構；第三步第三步:將主動語態(tài)的將主動語態(tài)的主語主語改為改為介詞介詞by的賓語的賓語，放在，放在 謂語之后謂語之后(有時可省略有時可省略)。如圖示：如圖示：They (主語主語）grow (謂語謂語）tea (賓語賓語）in the south-east of China.被

9、動語態(tài)被動語態(tài):主動語態(tài)主動語態(tài):Tea (主語主語）is grown (謂語謂語）by them in the south-east of China.句式句式結構結構示例示例肯定句肯定句主語主語+情態(tài)動詞情態(tài)動詞+be+及物動詞及物動詞的過去分詞的過去分詞(+by)Teenagers should be allowed to go shopping.否定句否定句主語主語+情態(tài)動詞情態(tài)動詞+not+be+及物及物動詞的過去分詞動詞的過去分詞(+by)The word cant be used in this sentence.一般疑問句一般疑問句 情態(tài)動詞情態(tài)動詞+主語主語+be+及物動詞及

10、物動詞的過去分詞的過去分詞(+by)?Must the work be finished today?特殊疑問句特殊疑問句特殊疑問詞特殊疑問詞+被動語態(tài)的一般被動語態(tài)的一般疑問句？疑問句？Who should be asked for help?含有情態(tài)動詞的主動句變?yōu)楸粍泳鋾r，謂語動詞部分改含有情態(tài)動詞的主動句變?yōu)楸粍泳鋾r，謂語動詞部分改為為“情態(tài)動詞情態(tài)動詞+be+及物動詞的過去分詞及物動詞的過去分詞”。We can write Letters can be written letters in English. in English by us. 改為被動語態(tài)改為被動語態(tài)4a Rewri

11、te the sentences according to the example.1. You must clean your bedroom every day. Your bedroom must be cleaned every day .2. Parents should encourage teenagers to do social work for their community. Teenagers _ _ .should be encouraged to do socialwork for their communit3. Can Lucy do her homework

12、tomorrow instead? Can_ _ ?Lucys homework be done by hertomorrow instead4.Do you think we must keep teenagers away from the Internet? Do you think teenagers _ _ ?must be kept awayfrom the Internet5. Parents should give teenagers chances to make their own decisions. Teenagers _ _ .should be given chan

13、ces to maketheir own decisions4b Fill in the blanks with the correct forms of the words in brackets.Should teenagers _(ask) to move out when they start working? In many Western countries, teenagers _(allow) to move out at eighteen. Their parents believe that they should _(educate) to take care of th

14、emselves from a young age. This way, when they _(start) working they can manage their own lives. However, in most Asian be askedare allowedbe educatedstartsocieties, it is not common for teenagers to _(move) out. Chinese parents believe that it is better for children to live with parents who can _(t

15、ake) care of them. But the young should then look after their parents as they get older. That is why many Chinese adults _(continue) to live with their parents.movetakecontinue4c You and your friend are starting an English club. Make a list of rules about what should and should not be allowed. A: Me

16、mbers should be allowed to use dictionaries.B: Yes, but they should only use English-English dictionaries.Are there any other rules about what should and what should not be allowed in the English club? Can you tell us?Language points1. Do you think teenagers should be encouraged to make their own de

17、cisions? 你認為應該鼓你認為應該鼓勵青少年自己做決定嗎？勵青少年自己做決定嗎？ make ones own decision 意為意為“自己做決自己做決定定”，相當于，相當于make a decision for oneself。例：例：I just want to make my own decision. 我只想能夠自己做決定。我只想能夠自己做決定。 2. Parents should give teenagers chances to make their own decisions. 父母應該給青少年父母應該給青少年自己做決定的機會。自己做決定的機會。 chance (a su

18、itable time or situation when you have the opportunity to do sth.) 可數(shù)名詞，意可數(shù)名詞，意為為“機會；機遇機會；機遇”，其后可接，其后可接to do sth.或或of sth.。若表示。若表示“做某事對某人來說是一次機做某事對某人來說是一次機會會”，其后可接，其后可接for sb. to do sth.。例：例：I never miss a chance to play football. 我從不錯過踢球的機會。我從不錯過踢球的機會。 Its a good chance for you to meet. 這是一個你們見面的好機

19、會。這是一個你們見面的好機會。3. This way, when they _(start) working they can manage their own lives. 這樣，當他們開始工作時，他們能應付他這樣，當他們開始工作時，他們能應付他們自己的生活。們自己的生活。 manage 意為意為“完成完成(困難的事困難的事);應付應付(困難困難) 局面局面”， 其后可接名詞、代詞或動詞不定其后可接名詞、代詞或動詞不定式。式。例：例：Im not sure how we will manage it. 我不確信我們將如何完成這件事。我不確信我們將如何完成這件事。 You should man

20、age to finish the work in time. 你應該設法及時完成工作。你應該設法及時完成工作。manage to do sth. 與與 try to do sth.manage to do sth. “設法做成某事設法做成某事”，強調(diào)結果。，強調(diào)結果。暗含暗含“做成了某事做成了某事”之意。之意。try to do sth.“盡力做某事盡力做某事”，表示，表示“盡力做盡力做，設法做設法做”，強調(diào)動作，不表結果。，強調(diào)動作，不表結果。例：例：The shirt was very dirty, but he managed to clean it. 這件襯衫很臟，但他設法把它洗干凈

21、了。這件襯衫很臟，但他設法把它洗干凈了。 The boy tried to move the stone but failed. 這個男孩試圖移動這塊石頭，但失敗了。這個男孩試圖移動這塊石頭，但失敗了。.單項選擇單項選擇1. Teenagers _allowed to drive a car. A. should not be B. should be not C. not should be D. shouldnt2. Linda saw a pen on the road, so she stopped _it up. A. pick B. to pick C. picking D. pi

22、ckedAB3. Yesterday my sister had her computer _at the supermarket. A. mend B. to mend C. mended D. mending4. He never studies. He plays computer games all day_. A. instead B. instead of C. however D. butCA5. -Can you hear me? -No, I cant. Would you please speak _. A. clearly enough B. clear enough C

23、. enough clearly D. enough clear6. Old people must _. A. speak polite B. be spoken to politely C. speak to polite D. be spoken politelyAB7. Things should _ here before you enter the Great Museum. A. keeps B. keep C. be kept D. are kept 8. We wont allow _ in the cinema. But you are allowed _in the re

24、stroom. A. smoking; smoking B. to smoke; to smoke C. smoking; to smoke D. smoke; smokeCC9. -I think you should phone Jenny and say sorry to her. -_. It was her fault. A. Not at all B. Not possible C. No chance D. No way10. I think some of the school rules should _. A. be change B. be changed C. be c

25、hanging D. changeDB11. -Do you believe there are aliens? -Im afraid not. I dont think aliens _ in space. A. can find B. can be found C. can be founded D. cant be founded12. The flowers must _ every day. A. water B. be watered C. watered D. wateringBB13. -Can sixteen-year-olds drive their cars to sch

26、ool? - No. they shouldnt _ to drive because they are not serious enough. A. allow B. allowed C. be allowed D. have allowed14. Dont worry. The work _ in two days. A. will finish B. is done C. will be finished D. finishCC15. _ middle school students allowed to use mobile phone at school ? A. Do B. Did

27、 C. Are D. Can 16. I dont think teenagers should be allowed to drive , because they are _. A. not enough serious B. not serious enough C. too serious D. to seriousCB17. Water _ into ice. A. will changed B. must be changed C. should change D. can be changed18. A strange sound _ yesterday evening. A. was heard B. hears C. heard D. is heardDA 19. The new play _ in t