Unit 7 SectionA Grammar Focus-4c 课件2025-2026学年人教版（2012）英语九年级全册

该初中英语课件聚焦九年级Unit 7“含有情态动词的被动语态”，通过主动语态例句转换导入，系统讲解句式结构（肯定、否定、疑问）及主动变被动规则，搭建从已知到未知的学习支架，帮助学生掌握核心句型和用法。 其亮点在于结合青少年生活话题（如开车、兼职、做决定）设计对话和练习，贴近实际提升语言能力，通过单选、句型转换及小组创建英语俱乐部规则活动，培养思维品质和合作学习能力。总结梳理结构与应用，学生在运用中内化语法，教师可高效开展语法教学。

Unit 7 Teenagers should be allowed to choose their own clothes. Section A Grammar Focus-4c R·九年级全一册 Learning objects By the end of the class, you will be able to … 1. Grasp the key words and sentence patterns. 2. Use the passive voice to talk about what you are allowed and aren’t allowed to do. Transfer the sentences’ voice to the passive voice. 1. He cleans his bedroom every day. His bedroom is cleaned by him every day. 2. He cleaned his bedroom yesterday. His bedroom was cleaned by him yesterday. 3. He should clean his bedroom in the morning. His bedroom should be cleaned in the morning. 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 含有情态动词的被动语态 1. 含有情态动词的被动语态的句式结构 肯定句： 主语+情态动词+be+及物动词的过去分词+其他. 否定句： 主语 + 情态动词 + be + not + 及物动词的过去分词 +其他. 一般疑问句及答语： 情态动词+主语+be+及物动词的过去分词+其他? 肯定回答：Yes, 主语+情态动词. 否定回答：No, 主语+情态动词+not. 特殊疑问词+情态动词+主语+be+及物动词的过去分词+其他? 特殊疑问句： (1)主动句中的宾语变为被动句中的主语; (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)主动句中的主语变为介词by 的宾语, by 短 语常可省略。 2.含有情态动词的主动句变为被动句时,主要遵 循如下三点: 主动句：We should complete the work today. 被动句：The work should be completed(by us) today. 示例如下： 主语 谓语 宾语 一、单项选择。 1. If you are over 18 years old, you ____ to drive a car in our country. A. can allow B. can’t allow C. can be allowed 2. — Tom is always careless with his school work. Could you help him? — No problem! I think he ____ to think twice before starting. A. should be told B. shouldn’t be told C. should tell 3. In summer, fruit and meat ____ long. A. can’t be kept B. don’t keep C. is not kept D. aren’t keeping 4. All the mobile phones should ____ during the examination. A. turn off B. be turned off C. be turning off D. turned off 二、按要求完成句子，每空一词。 1. These glass cups and bowls must be put in a safe place.(改为主动语态) We ______ ______ these glass cups and bowls in a safe place. 2. Mr. Smith can translate this novel into English. (改为被动语态) This novel ____ ___ _________ into English by Mr. Smith. must put can be translated 3. The question should be discussed again. (改为否定句) The question ________ ____ discussed again. 4. The happy life could be created by hard work. (改为一般疑问句，并作肯定回答) — ______ the happy life ______ ______ by hard work ? — ____, it ______. shouldn’t be Could be created Yes can Rewrite the sentences according to the example. 4a 1. You must clean your bedroom every day. Your bedroom must be cleaned every day. 2. I will do the housework in the afternoon. The housework will be done in the afternoon. 3. Parents will encourage their children to do social work for their community. Children _________________________________________________________. 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_________________________________________________________. will be encouraged to do social work for their community (by their parents) must be kept away from the Internet (by us) should be given chances to make their own decisions (by their parents) 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 Brainstorm What do you always do in an English club? act out English plays listen to English lecture sing English songs watch English movies You and your friend are starting an English club. Make a list of rules about what should and should not be allowed. 4c Group work A: Members should be allowed to use dictionaries. B: Yes, but they should only use English-English dictionaries. Summary The different sentence structures of the passive voice with modal verbs. Use the sentence structures to talk about rules. $