人教版英语九年级上册Unit 7 Teenagers should be allowed to choose their own clothes. Section A Grammar Focus-4c课件

Unit 7 Teenagers should be allowed to choose their own clothesSection A Grammar Focus-4c人教版英语九年级上册To understand the grammar should be allowed to do.To practice the passive voice. If you like, you can do more exercises. Objectives cry all night stay by one’s side sleep in warm arms run through the field make sure keep sb. from danger give sb. a hug lift up talk 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Translate the phrases.Review watch scary movies give sb. awful dreams be back by ten think back to those times cough for days have scary dreams be late for school stay out regret 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What can you do at school? What can’t you do at school?Do you agree or disagree? Free talkI think students should be allowed to do homework with friends.Sixteen-year-olds should not be allowed to drive.Do you think sixteen-year-olds should be allowed to 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1. You should finish your homework first. Your homework should be finished (by you) first. 2. You can take this magazine home. This magazine can be taken home (by you). 1. I don't think 16-year-olds should be allowed to drive. 2. Do you think teenagers should be encouraged to make their own decisions?3. Teenagers should not be allowed to have part-time jobs.4. Do you think we may be allowed to take photos if we don't use a flash?A. I disagree.They can learn a lot from working.B. If you don't use a flash, then it may be okay.C. I agree. They aren't serious enough.D. No, I don't agree with this. Teenagers are too young to make their own decisions.C D A B Practice the grammar含情态动词的被动语态常用的情态动词有：can, could (能；会), may; might (可以) must(必须), should(应该), will; would(愿意)have to(必须；不得不), had better(最好)1.含情态动词should的被动语态结构式：　　　should + be+及物动词的过去分词。　(1)肯定句结构为：主语+should be+及物动词的过去分词+ (by+宾语)。　eg: 你应该自己完成作业。　Your homework should be finished by yourself.含情态动词should的被动语态　(2)否定结构为：主语+ should + not+ be +及物动词的过去分词+ (by+宾语)。　　　eg：不应该允许青少年晚上外出。　Teenagers should not be allowed to go out at night. (3)特殊疑问句结构为:疑问词+一般疑问句？　　　eg：应该允许学生们做什么？　What should students be allowed to do?　(4)一般疑问句结构为:Should +主语+ be+及物动词的过去分词+ (by+宾语)？　回答:Yes，主语+should./No，主语 + shouldn’t.　eg:这些小树应该每天浇水吗？　Should these young trees be watered every day?　Yes, they should. /No, they shouldn’t.　对，应该。/不，不应该。主动句变被动句的步骤与其它情况相同。We should allow teenagers to watch TV on Sunday. Teenagers should be allowed to watch TV on Sunday( by us).People may catch fish in the river.Fish may be caught in the river (by people).1.I can finish the work. The work can be finished by me.一般问句： Can the work be finished by you?2.We should plant many more trees. Many more trees should be planted by us.一般问句： Should many more trees be planted by us?Teenagers should be allowed to drive the car .3.Parents should allow teenagers to drive the car.一般问句： Should teenagers be allowed to drive the car ?Trees must be watered every day.4.They must water trees every day.一般问句： Must trees be watered every day?1. Sixteen-year-olds should be allowed to drive.(改为否定句)Sixteen-year-olds shouldn’t be allowed to drive.2. I think the work should be done at once.(改为否定句)I don’t think the work should be done at once.►Teenagers should be allowed to choose their own clothes. 应该允许青少年选择他们自己的服装。►Students should not be allowed to have part-time jobs. 不应该允许学生们做兼职工作。►Can these books be taken out of the reading room? 可以把这些书带出阅览室吗？►When must the work be finished? 这些工作必须什么时候完成？ 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.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?4a Rewrite the sentences according to the example.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.The keys be askedare allowed4b Fill in the blanks with the correct forms of the words in brackets.be educatedstartmovetakecontinue4c You and your friend are starting an English Club.Make a list of rules about what should and should not be allowed.Sample Dialogue 1 A: Members should be allowed to use dictionaries. B: Yes, but they should only use English- English dictionaries.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。 1. We must do the work right now. (改为被动语态) _____ ______ _____ _____ _______ right now. The work must be doneExercises2. 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 read4. 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 allowed1. Their work must ____________ (finish) by four o’clock. 2. Your homework should __________ (do) by yourself. 3. These books mustn’t __________ (take) out of the reading room.4. Should these food _________ (keep) dry?be finished be done be taken be kept II. 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 returned Ⅳ. 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?Some people think trees ____ on Tree Planting Day only.A. should plant B. should be plantedC. should be plant D. should be plantingB中考链接树应该被种植，要用含情态动词的被动语态should be done 。应当允许青少年做出自己的决定。Teenagers should be allowed to ______ their own ___________.make decisions 做决定，make one’s decision。HomeworkReview the grammar.Do some exercises.Thank you!