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课件网) 人教版必修第一册 Period 3 Discovering Useful Structure --Tag questions 附加疑问句 Unit 3 Sports and fitness 一、附加疑问句的基本概念 1.附加疑问句的概述 附加疑问句就是对陈述句所叙述的事情提出相反疑问的问句。主要表示以礼貌或委婉的语气提出要求，询问或确认信息等。读时前半部分用降调，后半部分既可以用升调也可用降调。通常情况下，用升调时，多表示疑问或请求；用降调时，多表示求证或希望对方同意。 2.附加疑问句的基本构成形式 附加疑问句由两部分构成：前一部分是一个陈述句，后一部分是一个简短的疑问句。两部分的人称和时态应保持一致。陈述部分为肯定句时，附加疑问句用否定式，反之用肯定式。 （前肯后否，前否后肯） You are a syudent,aren't you 你是一个学生，是吗？ He doesn't like ice cream,does he 他不喜欢冰淇淋，是吗？ He could hardly walk without a stick, _____ 点津：（1）当陈述部分带有 seldom, hardly, scarcely, never, few, little, nothing, nobody 等否定词或半否定词时, 反意疑问部分的动词用肯定形式。 could he Tom dislikes playing tennis, _____ It’s unfair, _____ （2）如果陈述部分含有由表示 “否定” 意义的前缀构成的词，其反意疑问部分一般用否定式。 doesn't he isn't it 即时训练： 1.He likes playing basketball, _____ 2.He can’t swim, _____ 3.Everything has gone wrong, _____ 4.You can't speak French,_____ 5.This will not be mentioned at the meeting, _____ doesn't he can he hasn't it can you will it 二、附加疑问句的具体用法 1.附加疑问句的主语问题 （1）基本原则：疑问部分的主语应与陈述部分主语一致，且只能是代词。 Mary is a nurse,isn't she 玛丽是护士，是吗？ （2）当陈述部分为there be句型时，疑问部分的主语仍用there。 There will be rain tomorrow, won’t there There should be no problem, should there （3）当陈述部分的主语是指示代词时，疑问部分的主语用it,they等代词。 That is a new car,isn't it 那是一辆新车，是吗？ A: It's Sports Day next Thursday, _____ B: You're right, it is. Let's ask Xia Lei if she wants to join a team. A: She likes soccer, _____ B: _____. But she loves volleyball. She could be in the volleyball team. isn’t it doesn’t she No, she doesn’t A: It's time for badminton class. Where is the coach He's late, _____ B: It's been 10 minutes already. He isn't coming, _____ A: Cool! We can have a good time. That's great! B: Shh! A: Oh no, he's right behind me, _____ C: Yes, I am! isn’t he is he isn’t he What have you found about the structure 前句肯定，后句否定；前句否定，后句肯定。 反意疑问句的主语与前面问句一致，谓语为be、情态动词或助动词。 答句与事实相符，用“yes”，反之用“no”，与问句的肯定与否定无关。 Fact: Tom won’t take part in the final game. Tom will take part in the final game, _____ he _____ Tom won’t take part in the final game, _____ he _____ won’t No, he won’t. will No, he won’t. 反意疑问句解题步骤 1. 判定：肯否定 2. 找动：确定谓语动词的类型 3. 换代：将主语转换为相应的代词 Work in pairs. Use tag questions to role play one of the situations below. Production Example: A: The Sports Day is coming soon, isn't it B: Yes, it is.They need some volunteers, don't they A: Yes, they do... Product ... ...
