Unit 2 语法专项课件— 反意疑问句 2025-2026学年鲁教版（五四学制）2012英语八年级下册

教学课件 鲁教（五四制）英语八年级下册 Unit2 语法专项—— 反意疑问句 全解精讲+分层练习 1 学习目标 1.掌握反意疑问句的基本结构与含义 2.熟练运用“前肯后否，前否后肯”规则 3.记住含否定词的特殊反意疑问句用法 4.能正确完成选择、句型转换、补全对话题 5.学会根据事实准确回答反意疑问句 什么是反意疑问句 反意疑问句=陈述句+简短附加问句 作用：确认事实、寻求对方回应 两部分要求：人称、时态、数必须一致 核心：对前面内容提出相反疑问 基本规则（1） 核心口诀：前肯后否，前否后肯 前面陈述句是肯定→问句用否定 前面陈述句是否定→问句用肯定 问句动词：be动词/助动词/情态动词 问句主语：必须用人称代词 基本结构表格 陈述句 附加问句 例句 肯定 be/助/情+not+主语 He is tall, isn’t he? 否定 be/助/情+主语 You can’t swim, can you? 解题四步法 找动词：确定be/助动词/情态动词 看时态：问句时态与陈述句一致 定肯否：遵循前肯后否、前否后肯 换主语：用对应人称代词 be动词的反意疑问句 主语+be+其他，isn’t/aren’t/wasn’t+主语? It is cold today, isn’t it? They were late, weren’t they? She isn’t angry, is she? 注意：be动词形式随人称和时态变化 实义动词一般现在时 主语(非三单)+动词原形，don’t+主语? You like music, don’t you? 主语(三单)+动词-s，doesn’t+主语? He plays basketball, doesn’t he? 问句只用do/does，不用实义动词本身 实义动词一般过去时 主语+动词过去式，didn’t+主语? They watched TV, didn’t they? She went to school, didn’t she? 一律用did，无人称变化 前否后肯：He didn’t come, did he? 情态动词can/will等 情态动词+动词原形，情态动词+not+主语? You can swim, can’t you? They will come, won’t they? He shouldn’t late, should he? 常见：can, will, would, should, must 现在完成时 have/has+过去分词，haven’t/hasn’t+主语? You have finished, haven’t you? She has left, hasn’t she? They haven’t seen it, have they? 助动词用have/has，不可用do/does 特殊情况——否定词（1） 陈述句含否定词，视为否定句 问句必须用肯定形式 常见否定词：never, seldom, hardly 例：He never eats junk food, does he? 关键词：看到否定词→后用肯定 特殊情况——否定词（2） 否定词：few, little, nobody, nothing few/little表“几乎没有”，算否定 There is little water, is there? Nobody knows, do they? Nothing is wrong, is it? 祈使句的反意疑问句 普通祈使句，附加问句用will you? Close the door, will you? 表示邀请，可用won’t you? Sit down, won’t you? Let’s… → shall we? Let us… → will you? 回答原则（重点） 回答只看事实，不看问句怎么问 事实肯定→Yes+肯定句 事实否定→No+否定句 不要被中文翻译干扰 例：You aren’t a student, are you? 回答示例 —He isn’t busy, is he? —Yes, he is.（不，他很忙） —They don’t like it, do they? —No, they don’t.（是的，他们不喜欢） 记住：Yes配肯定，No配否定 易错点提醒（1） 看到never/seldom/hardly→后必肯定 little/few表否定，后用肯定 主语是this/that/everything→用it 主语是these/those/somebody→用they 不可重复原主语名词，必须用代词 易错点提醒（2） There be句型：问句用there There is a book, isn’t there? I am… → aren’t I? Let’s… → shall we? 固定搭配 不能用am I not或isn’t I 单项选择 1. It’s a nice day, ______? A. isn’t it B. is it C. doesn’t it 2. You like drawing, ______ you? A. don’t B. do C. didn’t 3. He can play chess, ______ he? A. can B. can’t C. could 4. They have never been there, ______ they?A. have B. haven’t C. had 5. She seldom gets up late, ______ she? A. does B. doesn’t C. is 6. There is little juice left, ______ there? A. isn’t B. is C. are A A B A A B 7. —It will rain, won’t it?—______. The sun is shining. A. Yes, it will B. No, it won’t 8. —You didn’t go there, did you?—______. I stayed at home. A. Yes, I did B. No, I didn’t 9. Open the door, ______? A. will you B. won’t you C. shall we 10. Let’s play outside, ______? A. will you B. shall we C. do we 11. Everything is OK, ______ it? A. isn’t B. is C. doesn’t B B A B A 句型转换 （反意疑问句） 1. He is a helpful boy, ______ ______? 2. They go to school on foot, ______ ______? 3. She can dance well, ______ ______? 4. We have seen the film, ______ ______? 5. He never watches TV, ______ ______? isn’t he don’t they can’t she haven’t we does he 6. There are few cars, ______ ______? 7.Turn off the light, ______ ______? 8.You don’t like coffee, ______ ______? 9.I think she is clever, ______ ______? are there will you do you isn’t she 回答问题 —You aren’t free, are you?（事实：很忙） —He doesn’t like sports, does he?（事实：喜欢） —It isn’t difficult, is it?（事实：很难） —They have finished homework, haven’t they?（事实：没完成） Yes, I am. Yes, he does. No, it isn’t. No, they haven’t. 易错题专练 He is unhappy, ______ he? I am late, ______ I? Nobody knows the answer, ______ they? Something is wrong, ______ it? Let us go home, ______ you? isn’t don’t can doesn’t is 课堂小结（1） 基本规则：前肯后否，前否后肯 问句动词：be/助动词/情态动词 否定词：never/seldom/hardly/few/little否定词出现→问句用肯定 主语必须换成人称代词 课堂小结（2） 祈使句：will you? Let’s…: shall we? 回答：只看事实，不看问句 There be→问句用there时态、人称、数必须前后一致 教学课件 Unit2 语法专项—— 反意疑问句 Thank you for listening! 26 $