Unit 3 语法专项课件- 动词不定式 课件 2026-2027学年外研版英语九年级下册

该初中英语课件聚焦外研版九年级下册Unit3动词不定式语法，系统讲解基础结构、否定形式、六大成分用法、固定搭配及特殊句型，通过“基础认知—成分功能—特殊句型—易错点”的递进脉络，搭建从理解到应用的学习支架。 其亮点在于分层练习与核心素养融合，通过成分判断、动词填空等多样化题型，结合“一感二听三让四看半帮助”口诀强化记忆，提升学生语言能力和思维品质。易错点汇总与核心总结助力精准突破，教师可直接用于课堂精讲与分层训练，高效提升教学效果。

教学课件 外研英语九年级下册 Unit3 语法专项 —— 动词不定式 全解精讲+分层练习 1 1. 掌握不定式基础结构与否定形式 2. 熟练区分不定式作主、宾、表、定、状、宾补 3. 熟记省略to与必须加to的固定动词 4. 掌握不定式高频特殊句型与易错点 学习目标 不定式基础认知 动词不定式是非谓语动词核心形式之一。 基础结构:to + 动词原形(to无词义) 否定结构:not to + 动词原形(固定位置) 核心特点:无人称、单复数、时态变化 可在句中充当六种不同句子成分 用法一:不定式作主语 功能:不定式整体充当句子主语,表具体动作 常用句型:To do sth + 谓语 + 其他 高频替代:It’s + adj + to do sth(形式主语) 例句:To learn new skills is very important. 译文:学习新技能是非常重要的。 形式主语专项精讲 It 作形式主语,真正主语为后面的不定式。 避免句子头重脚轻,是中考万能句型。 例句:It is necessary to keep on practicing. 译文:坚持练习是很有必要的。 固定形容词:important、necessary、easy、hard 用法二:不定式作宾语 功能:放在及物动词后,充当动作对象 结构:主语 + 谓语动词 + to do 只接to do高频动词:hope、plan、decide、try 例句:I decide to take part in the volunteer activity. 常接不定式作宾语的动词清单 意愿计划类:hope、wish、plan、expect 选择决定类:decide、choose、refuse、agree 尝试学习类:try、learn、promise、afford 以上动词后只能接to do,不接doing 用法三:不定式作宾语补足语 功能:补充说明宾语将要执行的动作 结构:主语+动词+宾语+to do 常用动词:ask、tell、allow、invite、want 例句:My teacher asks me to finish tasks on time. 宾补否定结构精讲 固定结构:动词 + sb + not to do sth 易错点:not必须放在to的前面 错误示范:tell sb to not do sth 正确示范:tell sb not to do sth 例句:Parents tell us not to waste time. 用法四:不定式作定语 功能:修饰前面名词,表“……的” 位置:永远放在被修饰名词之后 高频句型:the way to do、time to do 例句:I have no time to play computer games. 不定式作定语高频搭配 the way to do sth 做某事的方法 the chance to do sth 做某事的机会 the ability to do sth 做某事的能力 something to eat 一些吃的东西 用法五:不定式作目的状语 功能:修饰主句,表动作发生的目的 翻译:为了……,可放句首或句末 拓展短语:in order to do(可通用) 例句:He gets up early to study English. 用法六:不定式作表语 功能:放在系动词后,解释主语内容 结构:主语 + be + to do sth 多用于计划、目标、工作类主语后 例句:My dream is to become a useful person. 省略to的不定式(必考) 使役动词主动语态后省略to:make/let/have sb do 感官动词后省略to:see/watch/hear/feel sb do 口诀:一感二听三让四看半帮助 注意:被动语态必须还原to 被动还原to专项考点 主动:make sb do sth(无to) 被动:sb be made to do sth(加to) 例句:He is made to clean the classroom. 固定特殊句型1 too…to… 太……而不能…… 结构:too + 形容词 + to do sth 例句:He is too young to go to school. 表否定含义,无需额外否定词 固定特殊句型2 …enough to do… 足够……可以做…… 结构:adj/adv + enough + to do 例句:She is old enough to look after herself. 常与too…to…句型转换考查 固定特殊句型3 It’s time to do sth 到做某事的时间了 pretend to do sth 假装做某事 happen to do sth 碰巧做某事 seem to do sth 似乎、好像做某事 不定式vs动名词易混点 stop to do 停下来去做另一件事 stop doing 停止正在做的事 remember to do 记得要去做(未做) remember doing 记得做过(已做) 题型一 成分判断 判断不定式成分:主语/宾语/状语/宾补 1. I hope to visit the museum soon. 2. To keep healthy is important for everyone. 3. She studies hard to get good grades. 4. My mom tells me to keep safe. 宾语 主语 状语 宾补 题型一 成分判断 5. We have lots of homework to finish today. 6. His job is to teach children English. 7. They decide to join the sports club. 8. He runs fast to catch the early bus. 定语 表语 宾语 状语 题型二 动词形式填空 用所给动词适当形式(to do/原形)填空 1. I plan _ (travel) during the holiday. 2. The teacher lets us _ (read) aloud. 3. She refuses _ (give) up her dream. 4. We need _ (learn) to help others. to travel read to give to learn 题型二 动词形式填空 5. He was made _ (wait) for a long time. 6. It is easy _ (solve) this problem. 7. Don’t forget _ (lock) the door when you leave. 8. I saw him _ (play) basketball just now. to wait to solve to lock play 题型三 单项选择 1. She hopes _ a singer in the future. A. to be B. be C. being 2. The boy is too young _ the heavy box. A. carry B. to carry C. carrying 3. My parents ask me _ computer games too much. A. not play B. to not play C. not to play 4. It’s time _ our morning reading. A. do B. to do C. doing A B C B 题型四 句子改错 ,找出不定式错误并改正 1. He decided to not go to the park. 2. The boss made him to work all night. 3. It is hard of me to finish the work. 4. I have many things do today. to not not to to work work of for do to do 题型五 句型转换 1. It is important to learn English well.(同义句转换) 2. He studies hard so that he can pass the exam.(用不定式合并句子) 3. The question is so hard. I can’t answer it.(用too…to…合并) 4. She wants to buy some fruit.(对划线部分提问) To learn English well is important. He studies hard to pass the exam. The question is too hard for me to answer. What does she want to buy? 题型六 句子翻译 1. 学好一门外语对我们来说很重要。 2. 他足够优秀可以参加这次比赛。 3. 老师告诉我们不要在课堂上讲话。 4. 这道题太难了,我不会做。 It is very important for us to learn a foreign language well. He is good enough to take part in the competition. The teacher tells us not to talk in class. The problem is too hard for me to work out. 高频易错点汇总 1. 否定不定式误用to not do(正确not to do) 2. 使役动词被动语态忘记还原to 3. 混淆to do与doing语义差异 4. 定语不定式漏写to、结构残缺 本节课核心总结 1. 不定式核心:to+原形,否定not to do 2. 六大成分:主、宾、表、定、状、宾补 3. 主动省to、被动必加to是重难点 4. 熟记too…to、enough to特殊句型 教学课件 Unit3 语法专项 —— 动词不定式 Thank you for listening! 30 $