英语人教版 (2019)Unit 3 Sports and fitness多媒体教学课件ppt

这是一份英语人教版 (2019)Unit 3 Sports and fitness多媒体教学课件ppt，共20页。PPT课件主要包含了定义及作用，用法详解，巩固练习等内容，欢迎下载使用。
反义疑问句（Tag Questin），又称为附加疑问句，是指当提问的人对前面所叙述的事实不敢肯定，而需要向对方加以证实时所提出的问句。反义疑问句也可以用于祈使句，表示请求或者建议。
反义疑问句（Tag Questin）
It’s nt a real sprt, ? That sunds great, ?Cme alng and jin us, ?
01 反义疑问句基本构成
Lucy likes English, dsen't she？
A frmer statement陈述部分
助动词 d/des/did have/has/hadbe动词情态动词
观察前陈述句主语及动词，据此判断反义疑问句的动词及主语。如果陈述部分为肯定句，反义疑问句则为否定。如果陈述部分为否定句，反义疑问句则为肯定。
1. Anything is pssible, ___________?2. Everyne is here, ___________?3. We are busy, ___________?4. The wrkers are busy, ___________?5. The dctr is busy, ___________?6. There is a bk n the desk, ___________?7. Eating t much is bad fr health, ___________?
aren't they
isn't he/she
isn't there
陈述部分主语如果是人称代词主格，保持不变 （3）主语如果是名词，根据单复数变为he, she, it, they （5）陈述部分主语是不定代词，如果指代物，反义疑问句则用it, 如果指代人，反义疑问句则用he / they （1.2.4）There be 中，反义疑问句主语为there （6）不定式，动名词做主语时，反义疑问句主语为it （7）
句子含有否定副词或否定代词才能算否定句，带有否定前缀的词不能算做否定句。否定副词：n, nt, never, hardly, rarely, seldm, scarcely, barely否定代词：few, little, nthing, n ne, nbdy, neither, nne...否定前缀：un-，nn-，in-，dis-，a-，de-，under-，anti-， cunter-...
02 陈述部分是肯定句还是否定句的判断
She never lies，___________?Nthing ges well，___________?It is unbelievable，___________?
回答反意疑问句，通常应根据实际情况来确定！
03 反义疑问句的回答
The twins have arrived, haven't they?
Yes，they have.
N，they haven't.
04 反义疑问句的几种特殊情况
1. 祈使句的反义疑问句不区分肯定还是否定，都用 will yu
Clse the dr, ___________?Dn't lie t yur mther, ___________?
Let's d...为主句时，反义疑问句为：shall weLet us/me/them/...为主句时，反义疑问句为：will yu
Let's g shpping,___________?Let me d it, ___________?
反义疑问句的几种特殊情况
2. 陈述部分动词为had better, 反义疑问句的动词要用had
Yu'd better answer it, ___________?Yu'd better nt believe her, ___________?We'd better have a try, ___________?The tree had better be watered ften, ___________?
3. 陈述部分的谓语是used t 时，疑问部分用didn't 或 usedn't
He used t take a walk after dinner, ?My father used t swim in a river, ?They used t jg every mrning, ?
usedn't / didn't he
usedn't / didn't they
4. think, believe, suppse, imagine, expect等动词后接宾语从句，构成反意疑问句时，有两种不同的构成方式。
1. 当主句的主语为第一人称时，其后的反义疑问句应与从句相一致。当这些动词后接的宾语从句的否定转移时，其仍属否定句，故其后的简短问句应用肯定式。
I expect ur English teacher will be back this weekend, ？We suppse yu have finished the prject, ？I dn't believe that he can translate this bk, ？We dn't imagine the twins have arrived, ？
wn't she/he
2.当主句的主语为第二、三人称时，其后的反义疑问句则应与主句相一致。 （此时，否定只看主句，与从句无关）
Yur sister suppses she needs n help, ？Yu thught they culd have cmpleted the prject, ？ They dn't believe she's an engineer, ？
5. 陈述部分有must表示推测时的反义疑问句，疑问部分根据实际 情况而定。
He must be a dctr, ___________?Yu must have studied English fr three years, ___________?He must have finished it yesterday, ___________?
1. Linda ate nthing this mrning, ___________? 2. There's hardly any milk in the bttle, ___________? 3. He has never ridden a hrse befre, __________? 4. He seldm came here, ___________? 5. Everything seems all right,____________ ? 6. N ne failed in the exam, ____________? 7. He has tw sisters, _____________? 8. He must be a dctr, ______________?
9. They have n time t visit the museum, ____________? 10. Yu'd better g at nce, __________? 11. He dislikes the tw subjects, ____________? 12. These tls are useless nw, ____________? 13. He used t get up at 6:30, _______________? 14. Let's g there by bus,____________? 15. Let us g t play ftball, ____________? 16. Dn't frget t give Plly sme fd and change her water, ____________?
aren't they
didn't/usedn't he