九年级英语上册Unit7Teenagersshou教学课件新版人教新目标版 29页

Unit 7 Section A Grammar Focus 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 Review Translate the phrases. 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 Translate the phrases. 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 You should finish your homework first. Your homework should be finished (by you) first. You can take this magazine home. This magazine can be taken home (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。 Must this task be finished at 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： --- Must my exercise book be handed in now? 我的练习本必须现在上交吗？ --- Yes, it must . 是的，必须现在上交。 （ No, it needn’t . 不，不必现在上交。） --- Need he be operated on at once? 他必须立即手术吗？ --- Yes, he must . 是的，他必须。 （ No, he needn'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。 When must this task be 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 task needn't be finished at 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 bridge can be built next year, can't it? 这座桥明年能建成，是吗？ 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？ 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. 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. 4b Fill in the blanks with the correct forms of the words in brackets. be asked are allowed be educated v. 教育；教导 This way, when they ________ (start) working they can manage their own lives. However, in most Asian societies , 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. start v. 完成；应付 move take n. 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. continue 4c What rules should an English club have? Make a list of rules for it. Free Talk 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 shouldn’t be allowed to speak Chinese. B: I agree. Only in this way can you improve your English. Sample Dialogue 2 Ⅰ . 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 allowed Should a book be read The work must be done 4. 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 test be finished should be allowed  1. 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 made can’t be seen Must be returned 4.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 given Should be 6. The machine can be used for washing 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 received C. 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. plays C. 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 given C. 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 save C. 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?