人教版九年级上册英语《Unit 7 Section A Grammar Focus-4c 》教学课件.ppt

Section A Grammar Focus-4c,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 ones 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 cant you do at school? Do you agree or disagree?,Free talk,I 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 dont 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 dont use a flash?,A. I disagree.They can learn a lot from working. B. If you dont use a flash, then it may be okay. C. I agree. They arent serious enough. D. No, I dont 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 + shouldnt. 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 shouldnt. 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 shouldnt be allowed to drive.,2. I think the work should be done at once. (改为否定句),I dont 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 asked,are allowed,4b Fill in the blanks with the correct forms of the words in brackets.,be educated,start,move,take,continue,,4c 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.,Members are allowed to use English-English dictionaries.,A: Members shouldnt be allowed to speak Chinese. B: I agree. Only in this way can you improve your English.,Sample Dialogue 2,.按要求完成下列各句。

1. We must do the work right now. (改为被动语态) _____ ______ _____ _____ _______ right 。