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Unit 7Section AGrammar Focuscry all nightstay by one’s sidesleep in warm armsrun through the fieldmake surekeep sb. from dangergive sb. a huglift uptalk back整夜哭待在某人身边睡在温暖的臂弯里穿过田野确定;确保使某人远离危险拥抱某人举起,提起回嘴;顶嘴ReviewTranslate the phrases.watch scary moviesgive sb. awful dreamsbe back by tenthink back to those timescough for dayshave scary dreamsbe late for schoolstay outregret doing sth.看恐怖电影带给某人恶梦在10点前回来回想那些时光咳嗽好几天做可怕的梦上学迟到待在外面;不回家后悔做过某事Translate the phrases.I think studentsshould be allowedto do homework with friends.Sixteen-year-oldsshould not be allowedto drive.Do you think sixteen-year-oldsshould be allowedto choose their own clothes?Look at these sentences.含情态动词的被动语态肯定句:主语+情态动词+be+动词过去分词.否定句:主语+情态动词+not+ be+动词过去分词.疑问句:情态动词+主语+ be+动词过去分词?(一)将主动语态的宾语变成被动语态的主语。(二)将含情态动词的主动句式变成被动句式,即:“情态动词+动词原形”变成“情态动词+be+过去分词”,然后再在其后加“by+主动句中的主语(人称代词用宾格)”。by短语也可省略。请看下列各句:转变方法You should finish your homework first.Your homeworkshould be finished(by you) first.You can take this magazine home.This magazinecan be takenhome (by you).含情态动词的疑问句、否定句的变化均需借助于情态动词完成。1.一般疑问句:直接将被动语态的陈述句中的情态动词提前。Mustthis taskbe finishedat once?这项任务必须立即完成吗?句式变换注意:含情态动词的被动语态的一般疑问句的回答,应保留原情态动词,但must表“必须”时,其否定回答应用needn’t;need表“必要”时,其肯定回答应用must。如:---Mustmy exercise bookbe handed innow?我的练习本必须现在上交吗?--- Yes, itmust.是的,必须现在上交。(No, itneedn’t.不,不必现在上交。)---Needhebe operated onat once?他必须立即手术吗?--- Yes, hemust.是的,他必须。(No, heneedn't.不,他不必。)2.特殊疑问句 :由特殊疑问词加上被动语态的一般疑问句构成。Whenmustthis taskbe finished?这项任务必须在什么时候完成?3.否定句: 在情态动词后面加上not或never即可,但must表"必要"时否定式为needn't。This taskneedn'tbe finishedat once.这项任务没必要立即完成。4.反意疑问句:借助情态动词构成附加疑问部分。如:This bridgecan be builtnext year, can't it?这座桥明年能建成,是吗?Teenagersshould be allowedto choose their own clothes.应该允许青少年选择他们自己的服装。Studentsshould not be allowedto have part-time jobs.不应该允许学生们做兼职工作。Canthese booksbe takenout of the reading room?可以把这些书带出阅览室吗?Whenmustthe workbe finished?这些工作必须什么时候完成?2. Parents should encourage teenagers to do social work for their community.3. Can Lucy do her homework tomorrow instead?Teenagers should be encouraged (by their parents) to do social work for their community.Can the homework be done (by Lucy) tomorrow instead?4aRewrite the sentences according to the example.1. You must clean your bedroom every day.Your bedroom must be cleaned every day.4. Do you think we must keep teenagers away from the Internet?5. Parents should give teenagers chances to make their own decisions.Do you think teenagers must be kept away from the Internet?Teenagers should be given chances to make their own decisions.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.4bFill in the blanks with the correct forms of the words in brackets.be askedare allowedbe educatedv.教育;教导This way, when they ________ (start) working they canmanagetheir own lives. However, in most Asiansocieties,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.startv.完成;应付movetaken.社会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.continue4cWhat rules should an Englishclub have? Make a list of rules for it.Free TalkSample Dialogue 1A: Members should be allowed to use dictionaries.B: Yes, but they should only use English-English dictionaries.Members are allowed to use English-Englishdictionaries.A: Members shouldn’t be allowed to speak Chinese.B: I agree. Only in this way can you improve your English.Sample Dialogue 2Ⅰ.按要求完成下列各句每空一词,含缩写。1. We must do the work right now. (改为被动语态)_______ _______ _______ _______ _______ right now.2. Teenagers should be allowed to go out with their friends on school nights. (改为否定句)Teenagers ________ _____ _______ to go out with their friends on school nights.3. A book should be read each month. (改为一般疑问句)_______ _____ _______ _____ _______ each month?shouldn’t be allowedShould a book be readThe work must be done4.你可以稍后考试。You can_______ _______ _______later.5.这项工作必须按时完成。The work must____ _________on time.6.应允许青少年培养自己的爱好。Teenagers_______ _____ _________to develop their own hobbies.take the testbe finishedshould be allowed 1. Their work must ____________ (finish) byfour o’clock.2. Your homework should __________ (do) byyourself.3. These books mustn’t __________ (take) outof the reading room.4. Should these food _________ (keep) dry?be finishedbe donebe takenbe keptⅡ.用所给词的适当形式填空。Ⅲ.句型转换。1. You should make up the bed every day. (改为被动语态)The bed_______ _______ _______up every day.2. We can’t see stars in the day time. (改为被动语态)Stars _______ _______ _______ in the day time.3. You must return the book on time. (改为被动语态的一般疑问句形式)_______ the book _____ _________ on time?should be madecan’t be seenMustbe returned4.You must give back the dictionary before Friday. (改为被动语态)The dictionary must _____ _______ back before Friday.5. He should be told about the meeting.(改为一般疑问句)________ he _____ told about the meeting?be givenShould be6. The machine can be used forwashing dishes. (对画线部分进行提问)_____ _____ the machine ______ used for?What can be【2011天津】39. Today a lot of information can _______ online.A. receive B. be receivedC. is received D. receiving答案:B【解析】被动语态。今天有很多信息能在网上收到,信息被收到要用被动语态。含有情态动词的被动语态的构成:情态动词+be +过去分词。中考链接【2011浙江金华】22. — Must we clean the classroom now?— No, you needn't. It ______ after school.A. may clean      B. must clean   C. need be cleaned   D. can be cleaned答案:D【解析】由句意可知it指classroom,it和clean为被动关系,所以用被动语态,含有情态动词的被动语态结构为“情态动词+be+动词过去分词”。排除A和B。need意为“需要”,can意为“可能,可以”。由句意“—我们必须现在就打扫教室吗?—不,不必要。可以放学后打扫”可知,故选D。【2013山东青岛】 The song reminds me of my old school days as soon as it ______.A. is played B. playsC. will be played D. will play答案:A【解析】考查被动语态的用法。句意:这首歌被播放的时候,使我想起了我的学生时代。it作play的承受者,故用被动语态。【2013浙江宁波】—Have you finished your project?—Not yet. I’ll finish it if I _______ ten more minutes.A. give B. am givenC. will give D. will be given答案:B【解析】考查动词的被动语态。句意“如果再给我十分钟我会完成它。”主语与动词give之间是被动关系,在条件状语从句中用一般现在时表将来。【2013福建泉州】— If we take a shower instead of bath, more water ________.— I agree with you.A. has saved B. can saveC. can be saved答案:C【解析】考查被动语态。句意:——如果我们用淋浴而不是在浴缸里洗澡的话,会节省更多的水。——我赞同你。情态动词的被动语态的构成是:情态动词+be +动词的过去分词。翻译下列句子。1.需要好好地教育青少年。_____________________________________2.这辆小汽车不能修了。____________________________________3.这封信必须现在寄出去吗?____________________________________4.会议应该在哪举行?_____________________________________Teenagers need to be educated well.This car can’t be repaired.Must this letter be posted now?Where should the meeting be held?

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