Unit 7 语法精讲精练（复习课件）-【精品课】2025-2026学年九年级英语全一册同步精品课件（人教版）

该初中英语单元复习课件聚焦含情态动词的被动语态，系统梳理其定义、构成、句式变换及主动被动转换，通过表格对比一般现在时、过去时与情态动词被动语态结构，结合例句和易错点解析，构建从基础到进阶的语法知识网络。 其亮点在于采用“语法精讲-易错诊断-分层练习”复习策略，如设计改写句子、情景填空及错题辨析题，培养学生语言运用能力和逻辑思维品质。分层练习涵盖基础转换到综合应用，助力不同水平学生巩固语法，教师可精准把握学情提升复习效率。

Section A (2d&GF~4c) Unit 7 Teenagers should be allowed to choose their own clothes. Tang原创英语课件 1 Sandy and Wu Lan are really ________about ________ the famous paintings by Picasso. Sandy wants to bring her new camera to take _______, but it is not _________ to take photos in the museum. Sandy thinks that she may be allowed to take photos ______ she doesn't _______a flash. seeing photos allowed if use excited Close your book and try to retell the conversation. Review 主动语态：表示主语和谓语之间是_________关系 被动语态：表示主语和谓语之间是_________关系 英语的语态是通过动词形式的变化表现出来的。 英语中有两种语态：主动语态和被动语态。 We clean the classroom every day. The classroom is cleaned by us everyday. 主动 被动 被动语态的谓语动词结构为： be + 动词的过去分词 be 有时态和人称的变化 母亲节每年都被我们庆祝。 母亲节去年都被我们庆祝。 我们已经学过：一般现在时的被动语态 一般过去时的被动语态 Mother's Day is celebrated by us every year. Mother's Day was celebrated by us last year. Review 一般现在时的被动语态 is/are + 动词过去分词 一般过去时的被动语态 was/were + 动词过去分词 被动语态 我们已经学习了一般现在时的被动语态和一般过去时的被动语态，它们的结构为： 时态 被动语态结构 一般现在时 am/is/are + 及物动词的过去分词 一般过去时 was/were + 及物动词的过去分词 What will we learn today？ I don’t think sixteen-year-olds should be allowed to drive. I agree. They aren’t serious enough. Do you think teenagers should be encouraged to make their own decisions? No, I don’t agree with this. Teenagers are too young to make their own decisions. Teenagers should not be allowed to have part-time jobs. I disagree. They can learn a lot from working. Do you think we may be allowed to take photos if we don’t use a flash? If you don’t use a flash, then it may be OK. Grammar Focus Read the following sentences and find out the common features. 含有情态动词的被动语态的结构为： 情态动词+ be +及物动词的过去分词; 变为否定句时只需要在情态动词后加not can/ could may/ might will/ would shall/ should must ought to 1.情态动词无时态和人称的变化； 2.情态动词后动词变回原形。 情态 动词 1.定义 含情态动词的被动语态用来说明某个被动性动作所反映出的感情和态度。初中阶段的常见情态动词有：can, may , need , must , should等。 含情态动词的被动语态 2.构成：情态动词+be+过去分词 eg:More trees should be planted in the town.镇上需要种更多的树。 Tables can be made of stone or wood.桌子可以由石头或木头制成。 句式 结构 示例 肯定句 主语+情态动词+be+及物动词的过去分词(+by…) Teenagers should be allowed to go shopping. 否定句 主语+情态动词+not+be+及物动词的过去分词(+by…) The word can’t be used in this sentence. 一般疑问句 情态动词+主语+be+及物动词的过去分词(+by…)? Must the work be finished today? 特殊疑问句 特殊疑问词+情态动词+主语+be+及物动词的过去分词(+by…)？ Who should be asked for help? 3.句式 含情态动词的被动语态 10 e.g. Many trees should be planted in the mountains. This book can be taken home. This problem can’t be worked out very easily. Must the work be finished at once? 【拓展】 “动词+名词+介词”构成的短语动词(如take care of, pay attention to等)变为被动句时，通常把整个短语当作一个及物动词来处理。 e.g. You should pay attention to your health. →Your health should be paid attention to. 含有情态动词的主动句变为被动句时，有如下步骤： （1）把主动句的宾语变为被动句的主语； （2）主动句中的谓语变为“情态动词 + be + 及物动词的过去分词”； （3）主动句的主语在被动句中变为by的宾语； （4）其他成分不变。 主动句：We should plant trees in spring. 被动句：Trees should be planted in spring. 4.含有情态动词的主动句与被动句之间的转换 将下面三个句子改写成被动语态。 1. He cleans his bedroom every day. 2. He cleaned his bedroom yesterday. 3. He should clean his bedroom in the morning. ______________________________________ His bedroom is cleaned by him every day. His bedroom was cleaned by him yesterday. ______________________________________ ______________________________________ His bedroom should be cleaned by him in the morning. 一般疑问句: 直接将被动语态的陈述句中的情态动词提前。 eg:Must this task be finished at once?这项任务必须立即完成吗？ 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。） 5.句式变换 5.句式变换 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。 eg:This task needn’t be finished at once.这项任务没必要立即完成。 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。 eg:When must this task be finished?这项任务必须在什么时候完成？ 反意疑问句：借助情态动词构成附加疑问部分。如： eg:This bridge can be built next year, can’t it?这座桥明年能建成，是吗？ Grammar Focus Close your book and try to fill in the blanks. 1. 我认为十六岁的孩子不应该被允许开车。 I don’t think sixteen-year-olds _______ _______ _______ to drive. 我同意。他们还不够认真。 I agree. They aren’t serious enough. should be allowed 2. 你认为青少年应该被鼓励自己做决定吗？ Do you think teenagers ________ ________ ___________ to make their own decisions? 不，我不认同这个。青少年还太小不能自己做决定。 No, I don’t agree with this. Teenagers are _______ _______ _______ make their own decisions. should be encouraged to too young 3.青少年不应该被允许去做兼职。 Teenagers _______ _______ _______ _______ to have part-time jobs. 我不同意。他们可以从工作当中学到很多。 I disagree. They can _______ a lot _______ working. learn from should not be allowed 4. 你认为如果不用闪光灯的话我们会被允许拍照吗？ Do you think we _______ _______ _________ to take photos if we don’t use a flash. 如果不用闪光灯的话，那么拍照是可以的。 If you don’t use a flash, then it _____ ____OK. may be allowed Grammar Focus Close your book and try to fill in the blanks. may be 含情态动词 的被动语态 易错点 主语 + 情态动词 + not + be + done + 其他内容. 易错点一： 表达否定时，“not”接在情态动词后。 Paper and water wasted by people. A. will be not B. will not be C. should be not D. should not be 2. In 2050, 2G used in the world. A. will be not B. will not be C. should be not D. should not be 易错点二： 情态动词 + 主语 + be + done + 其他内容? 疑问句中， 情态动词后紧跟主语。 判断下列句子是否正确？正确（T）错误（F） Should classroom be cleaned by students? Must be my room cleaned by myself now? Should be food wasted by people? Can the homework be finished tomorrow? Can be moon seen at night? T F F T F 含情态动词 的被动语态 注意事项 注意事项一： You should pay attention to your health. →Your health should be paid attention to. 一些动词短语用被动语态时，动词短语应视为 一个整体，而不能丢掉其中的介词或副词。 注意事项二： We should make our country become more and more beautiful. → Our country should be made to become more and more beautiful. make，see，watch，hear，notice，feel等使役 动词和感官动词在主动语态中与省略to的动词不定式连用， 但变为被动语态后，必须加上to。 注意事项三： The pears must taste delicious. look, sound, taste, smell等系动词 用主动结构表被动意义。 24 注意事项四： His new book will sell well. 不及物动词与状语连用，用以表示主语的品质和状态。 常见的此类动词有：cut，sell，read，write，fill，cook，lock，wash，drive，keep等。 25 注意事项五： 含有宾语从句的主从复合句中的否定转移的用法。当动词think, believe, suppose, imagine, expect, feel的主语是第一人称、谓语动词为没有任何副词修饰的一般现在时，它们的否定式实际上是对宾语从句的否定。表示说话者提出一种委婉的看法或主张。 I think that he will help us. —I don't think that he will help us. 我认为它不会帮助我们。 I believe that he is right. —I don't believe that he is right. 我认为他不对。 I suppose that he likes it. —I don't suppose that he likes it. 我想他不喜欢它。 I don’t think sixteen-year-olds should be allowed to drive. 应该翻译为：我认为十六岁的孩子们不应该被允许开车。 26 含情态动词 的被动语态的“发生” take place 不及物动词短语 发生；出现；举行 （某事）按计划进行或按计划发生 happen 不及物动词 发生 常指具体事件的发生，特别指那些偶然的或未能预见的“发生” take place 和 happen 没有被动语态 1.The football match will take place tomorrow. 2. An accident can happen anywhere. summary 情态动词 的被动语态 句子结构 肯： 否： 一般疑问： 情态动词+be +done 情态动词+not+be+done 情态动词+主+be+done 易错点 1.表达否定时,“not”接在情态动词后。 2.疑问句中, 情态动词后紧跟主语。 1.而不能丢掉其中的介词或副词。 注意事项 2.使役动词和感官动词，但变为被动语态后必须加上to 3.look, sound, taste, smell 等系动词用主动结构表被动意义 4.不及物动词与状语连用， 用以表示主语的品质和状态。 表“发生” take place happen 两者不用于被动 1. You must clean your bedroom every day. Your bedroom ________________________. 2. I will do the housework in the afternoon. The housework ____________________________. 3. Parents will encourage their children to do social work for their community. Children ______________________________________ ______________________________________________. will be done in the afternoon Rewrite the sentences according to the example. will be encouraged (by their parents) to do social work for their community n. 社区; 社团 must be cleaned every day 4a Rewrite the sentences according to the example. 4a 4. Do you think we must keep teenagers away from the Internet? Do you think teenagers _____________________________ _____________? 5. Parents should give teenagers chances to make their own decisions. Teenagers _____________________________________________. Internet make one’s own decision 自己做决定 n. 机会; 可能性 keep … away from 避免接近; 远离 should be given chances to make their own decisions must be kept away from the Fill in the blanks with the correct forms of the words in brackets. 4b 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 be educated 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 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. 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. be asked are allowed start move take continue manage v. 完成(困难的事); 应付(困难局面) 后面常跟名词、代词或动词不定式。 manage to do sth. 设法做成某事 educate v. 教育; 教导 常用结构：educate sb. to do sth. education n. 教育; 培养 Brainstorm What do you always do in an English club? attend English corner activities act English plays sing English songs watch English movies read English newspapers listen to English lectures You and your friend are starting an English club. Make a list of rules about what should and should not be allowed. 4c A: Members should be allowed to use dictionaries. B: Yes, but they should only use English-English dictionaries. Ⅰ.用括号内所给单词的适当形式填空。 1.（2024·白银）No matter how many difficulties we have,I believe all problems can __________（solve） in the end. 2.The music is so loud that it can _________（hear） from a long way away. 3.Quick decisions have to _________（make） in such a dangerous situation. 4.Something must________（do） to protect endangered wild animals. 5.Those who helped the city through the difficult time should _______________（remember） forever. be solved be heard be made be done be remembered 35 Ⅱ.按要求完成句子，每空一词。 6.Nobody can answer the question.（改为同义句） The question ______ ____ _________ by anybody. can’t be answered 7.This project can be finished in three months.（改为一般疑问句） _____ this project ____ ________ in three months? Can be finished 8.The young trees should be watered every day.（改为否定句） The young trees _________ ____ ________ every day. shouldn’t be watered 36 9.You can’t lend the book to others.（改为被动语态） The book ______ ____ _____ to others. can’t be lent 10.The lights should be turned off when you leave the classroom. （改为主动语态） You _______ _____ ____ the lights when you leave the classroom. should turn off 37 Ⅲ.根据汉语意思完成句子，每空一词。 11.这些衣服必须手洗吗？ ______ these clothes ____ ________ by hand? Must be washed 12.我们周围的环境应该得到很好的保护。 The environment around us _______ ____ _________ well. should be protected 13.会议开始前，我们的手机必须被关掉。 Our mobile phones ______ ____ _______ ____ before the meeting starts. must be turned off 38 14.青少年应该被给予一些自己做决定的机会。 Teenagers should ____ ______ ________ to ______ _____ _____ _________. be given chances make their own decisions 15.应该鼓励孩子们到外面去亲近大自然吗？ _______ children ____ ___________ ___ ____ outside and be close to nature? Should be encouraged to go 39 Ⅳ.用方框中所给单词的适当形式填空。 manage educate society community chance 16.How __________ children is a problem for parents. 17.There is a library in one of these ____________，isn’t there? 18.As an old saying goes，“The _______ is always for those who are well-prepared.” to educate communities chance 40 19.In modern _______，the Internet is becoming more and more important. society 20.—I am stressed out. I have stayed up late the whole week. —You’d better ________ your time and have things organized. manage 41 Ⅴ.用方框中所给短语的适当形式填空。 talk back keep away from take good care of make one’s own decision move out 21.I regret ____________，not listening to Mom. 22.Now many teenagers think they are old enough to __________________ ________. 23.My old neighbor felt very lonely after his children ___________. 24.Do you think teenagers should ________________ the Internet? 25.Health is more important than wealth,so we must _________________ ourselves. talking back make their own decisions moved out keep away from take good care of 42 Ⅵ.语法填空。 阅读下面短文，在空白处填入1个适当的单词或括号内所给单词的正确形式。 My family members have a close relationship because our family has some rules. ◆Family Dinners My mother makes it 26.___ rule that everyone should sit down at the table and have dinner together. I think this is one of the 27._______（easy） and most important rules to have as a family. Eating meals together 28._______（create） a sense of belonging（归属感）.What’s more， keeping the habit will add to 29.__________（everyone） enjoyment. a easiest creates everyone’s 43 ◆Night-time Routine（惯例） Although it is hard for us 30.________（keep） this routine at first， it has turned out to be a good habit. After dinner we usually have our playtime；then 7：00 p.m.is bath time；7：30 p.m.is time to have some milk；and my mother reads a story 31.___ 7：50 p.m.；then I go to bed. This routine makes me 32.______（wake） up early in the morning and helps me feel 33.________（relax） at school. to keep at wake relaxed 44 ◆Cleaning Up Cleaning up is a family matter. After dinner we help our parents to clean up the kitchen and clear everything off the table. After this，we 34.__________（ask） to clean up everything that we were playing with in the daytime. So we won’t step on hard 35.___ wooden toys when we get up next morning. are asked or 45 Homework Review the grammar we’ve learned today. Recite Grammar Focus. Preview 1a~1e on page 53. Lavf57.71.100 Codec by Bilibili XCode Worker v4.8.80(fixed_gap:False) $