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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 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 allowed 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 should 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 you 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一般现在时的被动语态一般现在时的被动语态在英语中，动词有两种语态，即在英语中，动词有两种语态，即主动语态主动语态和被动语态和被动语态。被动语态的基本结构是被动语态的基本结构是“助助动词动词 be +及物动词的过去分词及物动词的过去分词”，其中其中助动词助动词be有人称、数和时态的变化有人称、数和时态的变化,其变化其变化规则与规则与be作为连系动作为连系动 完全一样。完全一样。1.一般现在时被动语态的各种句式结构一般现在时被动语态的各种句式结构肯定式肯定式 主语主语+am/is/are+过去分词过去分词（+by)否定式否定式 主语主语+am/is/are+not+过去分词过去分词(+by)疑问式疑问式Am/Is/Are+主语主语+过去分词过去分词(+by)?特殊疑问词特殊疑问词+am/is/are+主语主语+过去分词过去分词（+by.)?被动不离被动不离“be”“p.p.”,“p.p.”前面助动前面助动be。主谓一致莫忘记，主谓一致莫忘记，am,is,are现在时。现在时。2.一般现在时被动语态的基本用法一般现在时被动语态的基本用法 用法用法 示例示例表示表示经常性或习惯经常性或习惯性性发生的被动动作发生的被动动作I am often asked the question by my pupils.表示表示近期近期正在发生正在发生的被动动作的被动动作These days people are moved by a teacher named Zhang Lili.描述某种描述某种常态化常态化的的被动的客观事实被动的客观事实The spaceship is mainly controlled by computer.强调目前存在的强调目前存在的针针对行为主体人对行为主体人的被的被 限制性动作限制性动作You arent allowed to take photos.3.主动语态变为被动语态的方法主动语态变为被动语态的方法第一步第一步:将主动语态的将主动语态的宾语宾语改为改为被动语态的主语被动语态的主语；第二步第二步:将主动语态的将主动语态的谓语谓语改为改为“be+及物动词的过去及物动词的过去 分词分词”结构结构；第三步第三步:将主动语态的将主动语态的主语主语改为改为介词介词by的宾语的宾语，放在，放在 谓语之后谓语之后(有时可省略有时可省略)。如图示：如图示：They(主语主语）grow(谓语谓语）tea(宾语宾语）in the south-east of China.被动语态被动语态:主动语态主动语态:Tea(主语主语）is grown(谓语谓语）by them in the south-east of China.句式句式结构结构示例示例肯定句肯定句主语主语+情态动词情态动词+be+及物动词及物动词的过去分词的过去分词(+by)Teenagers should be allowed to go shopping.否定句否定句主语主语+情态动词情态动词+not+be+及物及物动词的过去分词动词的过去分词(+by)The word cant be used in this sentence.一般疑问句一般疑问句 情态动词情态动词+主语主语+be+及物动词及物动词的过去分词的过去分词(+by)?Must the work be finished today?特殊疑问句特殊疑问句特殊疑问词特殊疑问词+被动语态的一般被动语态的一般疑问句？疑问句？Who should be asked for help?含有情态动词的主动句变为被动句时，谓语动词部分改含有情态动词的主动句变为被动句时，谓语动词部分改为为“情态动词情态动词+be+及物动词的过去分词及物动词的过去分词”。We can write Letters can be written letters in English.in English by us.改为被动语态改为被动语态4a Rewrite 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 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 chances 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 themselves 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 _(take)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:Members 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 decisions?你认为应该鼓你认为应该鼓励青少年自己做决定吗？励青少年自己做决定吗？make ones own decision 意为意为“自己做决自己做决定定”，相当于，相当于make a decision for oneself。例：例：I just want to make my own decision.我只想能够自己做决定。我只想能够自己做决定。2.Parents should give teenagers chances to make their own decisions.父母应该给青少年父母应该给青少年自己做决定的机会。自己做决定的机会。chance(a suitable time or situation when you have the opportunity to do sth.)可数名词，意可数名词，意为为“机会；机遇机会；机遇”，其后可接，其后可接to do sth.或或of sth.。若表示。若表示“做某事对某人来说是一次机做某事对某人来说是一次机会会”，其后可接，其后可接for sb.to do sth.。例：例：I never miss a chance to play football.我从不错过踢球的机会。我从不错过踢球的机会。Its a good chance for you to meet.这是一个你们见面的好机会。这是一个你们见面的好机会。3.This way,when they _(start)working they can manage their own lives.这样，当他们开始工作时，他们能应付他这样，当他们开始工作时，他们能应付他们自己的生活。们自己的生活。manage 意为意为“完成完成(困难的事困难的事);应付应付(困难困难)局面局面”，其后可接名词、代词或动词不定其后可接名词、代词或动词不定式。式。例：例：Im not sure how we will manage it.我不确信我们将如何完成这件事。我不确信我们将如何完成这件事。You should manage to finish the work in time.你应该设法及时完成工作。你应该设法及时完成工作。manage to do sth.与与 try to do sth.manage to do sth.“设法做成某事设法做成某事”，强调结果。，强调结果。暗含暗含“做成了某事做成了某事”之意。之意。try to do sth.“尽力做某事尽力做某事”，表示，表示“尽力做尽力做，设法做设法做”，强调动作，不表结果。，强调动作，不表结果。例：例：The shirt was very dirty,but he managed to clean it.这件衬衫很脏，但他设法把它洗干净了。这件衬衫很脏，但他设法把它洗干净了。The boy tried to move the stone but failed.这个男孩试图移动这块石头，但失败了。这个男孩试图移动这块石头，但失败了。.单项选择单项选择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.pickedAB3.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.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 restroom.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 changing 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 school?-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 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 theatre now.Why dont you go in and see it?A.is being shown B.is showing C.is shown D.shows 20.Miss Chen _ just _ to speak at the meeting.A.has been asked B.has been asked C.have been asked D.have been asked AA.用所给词的适当形式填空用所给词的适当形式填空1.Children shouldnt be allowed _(swim)in the river.2.I dont think teenagers should get their ears _(pierce).3.We are tired,so we stop _(have)a rest.4.I think your idea isnt good.I _(agree)with you.to swimpiercedto havedont agree5.When _(be)the first man-made satellite _(send)up into space?6.Last year vegetables _(grow)in the garden by Tom and he _ (sell)them himself.7.How many magazines _(can borrow)in your library every week?8.John _(hear)to go upstairs two hours ago.wassentwere grownsoldcan be borrowedwas heardHomework Master what you have learned in this lesson.Learn to make sentences with“情态动词情态动词+be+及物动词的过去分词及物动词的过去分词”.
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