Unit1语法(一般现在时和一般过去时的被动语态)讲解与练习-2026-2027学年鲁教版四五学制英语九年级上册

该初中英语讲义以“思想的力量”单元主题为依托，通过“时态对比秒杀表”系统梳理一般现在时与一般过去时被动语态的知识体系，用句型结构拆解图呈现肯定、否定、疑问句式，结合单元主题例句分析用法场景，清晰展现be动词选用规则与过去分词变化等重难点的内在联系。 讲义亮点在于“分层进阶练习”设计，从动词填空、单项选择到句型转换、汉译英，覆盖不同能力需求，配套“主动变被动万能转换步骤”等方法指导，培养学生语言运用与逻辑思维能力。写作万能句型助力主题表达，易错陷阱解析提升学习效率，既支持学生自主复习，也为教师实施精准分层教学提供有力支撑。

Unit1 Power of Ideas语法讲解与练习 一般现在时&一般过去时被动语态详细精讲 一、单元语法导入 本单元主题为思想的力量、发明创造、人物成就、经典理论、古今智慧。文本大量客观介绍事物、理论、发明的诞生与应用，因此高频使用被动语态。 被动语态是初中核心必考语法，用于强调承受者（事物）、弱化动作执行者。 二、主动语态 VS 被动语态（核心逻辑） 主动语态：主语是动作的发出者（人做某事） 所有时态的被动，只改变 be动词，过去分词永远不变。 三、两大核心时态被动语态超细精讲 （一）一般现在时被动语态（am/is/are + done） 1. 用法场景 表示经常性、习惯性、客观真理、常态事实,多用于介绍常识,现存规则,普遍现象。 2. 完整句型结构 肯定：主语+ am/is/are +过去分词 否定：主语+ am/is/are + not +过去分词 疑问：Am/Is/Are +主语+过去分词？ 3. be动词选用规则（主谓一致） I → am; 单数名词/不可数/三单→ is ; 复数名词 → are 4. 单元主题例句拆解 *Many great ideas are shared every day. 许多伟大的思想每天都被分享。 （常态、客观事实） *This theory is widely used in our life. 这个理论在我们的生活中被广泛应用。 *Old wisdom is not forgotten by people. 古老的智慧不会被人们遗忘。 （二）一般过去时被动语态（was/were + done） 1.用法场景 表示过去某一时间发生的被动动作，侧重过去的发明、发现、诞生、发生的往事。 2.完整句型结构 肯定：主语+ was/were +过去分词 否定：主语+ was/were + not +过去分词 疑问：Was/Were +主语+过去分词？ 3. be动词选用规则 单数名词/不可数/三单 → was; 复数名词→ were 4.单元主题例句拆解 *Many great ideas were created in ancient times. 许多伟大的思想诞生于古代。 （过去发生） *This tool was invented hundreds of years ago. 这个工具是数百年前被发明的。 *These old theories were not accepted at first. 这些古老的理论起初并不被认可。 四、时态对比秒杀表（零混淆） 时态 结构 时间标志词 使用场景 一般现在时被动 am/is/are + done every day, usually, often, always, in general, now 客观真理、常态、习惯性被动 一般过去时被动 was/were + done yesterday, ago, last..., in the past, just now 过去单次、过去特定时间的被动动作 五、必考重点与易错陷阱 易错1：被动语态必须加be动词 ❌ The idea shared by people. ✅ The idea is shared by people. 易错2：过去分词拼写易错 A.规则变化(同过去式动词变化) 1).一般情况：直接加 ed work → worked clean → cleaned play → played open → opened finish → finished 2).以不发音字母e结尾：只加 d live → lived use → used like → liked close → closed invite → invited 3).辅音字母+ y结尾：变y为 i，再加 ed y前面是辅音字母：study → studied carry → carried worry → worried copy → copied ⚠️ 例外:元音字母+ y,直接加ed play → played enjoy → enjoyed 4).重读闭音节（辅+元+辅结尾）：双写末尾辅音再加 ed 条件三要素同时满足： *单词重读在最后一个音节 *结尾结构：辅音字母 + 元音字母 + 辅音字母 *末尾只有一个辅音字母 stop → stopped plan → planned drop → dropped shop → shopped 不规则必背：详细见课本附表 易错3：不及物动词无被动语态: happen、take place、appear、last、break out 正确：A big change happened hundreds of years ago. 错误：A big change was happened hundreds of years ago. 正确：The war broke out thousands of years ago. 错误：The war was broken out thousands of years ago. 易错4：时态不混用 现在常态用is/are，过去事件一律换was/were 易错5：by的用法 被动句中可用 by+动作执行者，可省略，强调执行者才保留 六、主动变被动万能转换步骤 一步换主语，二变be done，三调时态，四加by 主动：People create great ideas.（一般现在时） 被动：Great ideas are created by people. 主动：Ancient people invented many tools.（一般过去时） 被动：Many tools were invented by ancient people. 七、单元写作万能被动句型（思想与发明主题） 1. Many useful ideas are born from daily life. 许多有用的思想都诞生于日常生活。（一般现在时被动） 2. Great wisdom was left by ancient people. 伟大的智慧是古人留下的。 （一般过去时被动） 3. Traditional ideas are still valued today. 传统思想在如今依旧备受重视。 （一般现在时被动） 4. Many great theories were discovered by hard work. 许多伟大的理论都是通过努力被发现的。（一般过去时被动） 【全套配套练习】 大题一：用所给动词的被动语态填空 1. Many new ideas ________ (share) online every day. 2. This old theory ________ (use) widely in the past. 3. Great wisdom ________ (pass) down from generation to generation now. 4. Many ancient tools ________ (invent) thousands of years ago. 5. These ideas ________ (accept) by most people today. 6. The truth ________ (not find) by people at that time. 7. Modern knowledge ________ (learn) by students every day. 8. Many old stories ________ (tell) by people in ancient times. 9. This great idea ________ (consider) useful now. 10. Lots of inventions ________ (create) last century. 11. Traditional culture ________ (respect) all the time. 12. Many problems ________ (solve) by wise ideas in the past. 13. The value of ideas ________ (understand) by more people now. 14. These rules ________ (follow) by everyone every day. 15. This book ________ (write) by a famous thinker years ago. 16. New thoughts ________ (spread) quickly on the Internet now. 17. Many old mistakes ________ (correct) in the past. 18. The power of ideas ________ (believe) by people today. 19. Many ancient works ________ (keep) well until now. 20. Great changes ________ (bring) by new ideas long ago. 21. This method ________ (use) to teach students now. 22. Many questions ________ (answer) by wise people before. 23. The history of ideas ________ (record) in old books. 24. New wisdom ________ (produce) every day. 25. Many old theories ________ (improve) by modern science now. 大题二：单项选择 1. Many great ideas ___ every day by smart people. A. share B. are shared C. shared D. were shared 2. This old tool ___ by ancient people thousands of years ago. A. invents B. is invented C. was invented D. invented 3. Traditional wisdom ___ and respected by people now. A. is valued B. was valued C. values D. valued 4. Many useful theories ___ in the past and changed people’s lives. A. discover B. are discovered C. were discovered D. discovered 5. These stories ___ from old times and they are still popular today. A. are passed B. were passed C. pass D. passed 6. The accident ___ by nobody yesterday. A. notice B. is noticed C. was noticed D. noticed 7. New knowledge ___ in class every day. A. teaches B. is taught C. was taught D. taught 8. Many old mistakes ___ by people in the old days. A. correct B. are corrected C. were corrected D. corrected 9. The power of ideas ___ by more and more people today. A. realize B. is realized C. was realized D. realized 10. Lots of great works ___ by famous thinkers long ago. A. write B. are written C. were written D. wrote 11. This kind of method ___ widely used in our daily study now. A. is B. was C. are D. were 12. Many difficult problems ___ by wise people in history. A. solve B. are solved C. were solved D. solved 13. Ancient culture ___ well in modern times. A. protects B. is protected C. was protected D. protected 14. Many new thoughts ___ quickly in the past ten years. A. spread B. are spread C. were spread D. spreads 15. The importance of ideas ___ by everyone now. A. knows B. is known C. was known D. knew 大题三：句型转换（主动变被动/同义改写） 按时态要求改写为被动语态，句意不变 1. People share many great ideas online every day. ________________________________________________ 2. Ancient people invented many useful tools. ________________________________________________ 3. People respect traditional wisdom today. ________________________________________________ 4. Workers created many great works last year. ________________________________________________ 5. Teachers teach us new knowledge every day. ________________________________________________ 6. People did not accept some old theories at first. ________________________________________________ 7. Modern science improves many old ideas now. ________________________________________________ 8. People solved many social problems in the past. ________________________________________________ 9. Everyone follows these rules now. ________________________________________________ 10. Thinkers wrote many valuable books years ago. ________________________________________________ 大题四：汉译英（必用被动语态） 1. 许多优秀的思想如今被人们广泛传播。 ________________________________________________ 2. 数千年前，许多实用的工具被古人发明。 ________________________________________________ 3. 传统智慧一直被我们传承和尊重。 ________________________________________________ 4. 许多历史难题在过去被智者解决。 ________________________________________________ 5. 新的知识每天都被学生学习。 ________________________________________________ 6. 许多伟大的理论起初并不被人们认可。 ________________________________________________ 7. 思想的力量如今被越来越多的人认可。 ________________________________________________ 8. 大量珍贵的著作在古代被思想家创作出来。 ________________________________________________ 9. 古老的文化在现代社会被好好保护。 ________________________________________________ 10. 许多旧的观念被现代科学完善。 ________________________________________________ Keys 一、动词填空答案 1. are shared 2. was used 3. is passed 4. were invented 5. are accepted 6. was not found 7. is learned 8. were told 9. is considered 10. were created 11. is respected 12. were solved 13. is understood 14. are followed 15. was written 16. are spread 17. were corrected 18. is believed 19. are kept 20. were brought 21. is used 22. were answered 23. is recorded 24. is produced 25. are improved 二、单项选择答案 1.B 2.C 3.A 4.C 5.B 6.C 7.B 8.C 9.B 10.C 11.A 12.C 13.B 14.C 15.B 三、句型转换答案 1. Many great ideas are shared online every day. 2. Many useful tools were invented by ancient people. 3. Traditional wisdom is respected by people today. 4. Many great works were created by workers last year. 5. New knowledge is taught to us by teachers every day. 6. Some old theories were not accepted by people at first. 7. Many old ideas are improved by modern science now. 8. Many social problems were solved by people in the past. 9. These rules are followed by everyone now. 10. Many valuable books were written by thinkers years ago. 四、汉译英参考答案 1. Many excellent ideas are widely spread by people now. 2. Thousands of years ago, many practical tools were invented by ancient people. 3. Traditional wisdom is passed down and respected by us all the time. 4. Many historical problems were solved by wise people in the past. 5. New knowledge is learned by students every day. 6. Many great theories were not accepted by people at first. 7. The power of ideas is realized by more and more people now. 8. A lot of precious works were created by thinkers in ancient times. 9. Ancient culture is well protected in modern society. 10. Many old opinions are improved by modern science. 2 / 2 学科网（北京）股份有限公司 $