Unit+3+Discovering+useful+structures+课件 【高效备课精研+知识精讲提升】 高一上学期英语人教版（2019）必修第一册.pptx

Book1 Unit 1 Sports and FitnessDiscovering Useful Structures Step 1 Step 1 学习目标学习目标 1 11.To learn the definition、usage and answer of tag questions.2.To apply them into practice.1.What is tag question？什么是反义疑？什么是反义疑问句？问句？Step 2 Step 2 问题导学一问题导学一 1 1反意疑问句反意疑问句 用来表达：用来表达：1.对事情没把握（不确定性）对事情没把握（不确定性）2.寻求认可寻求认可 3.阴阳怪气（口语）阴阳怪气（口语）Step 3 Step 3 点拨点拨运用（一）运用（一）8 8 1.结构：结构：一个陈述一个陈述句句+疑疑问句问句课本课本p40-1Read the conversations below and underline the tag questions and their answers.What functions do the tag questions have?1.Amy:Its not a real sport,is it?Shen Qi:Yes,it is.2.Adam:That sounds interesting,doesnt it?Julie:Sure,it does.3.Lin Tao:Hi!Its a beautiful day,isnt it?Han Jing:Yes,it is.Im going to play soccer.Can you come along and join us?Lin Tao:Sorry,I cant.I ve got to meet my adviser.By the way,our school soccer team won at last,didnt they?Han Jing:No,they didnt.Its too bad.Function:expressing uncertainty表达不确定性 Function:asking for approval寻求认可 Function:asking for approval寻求认可 Function:expressing uncertainty表达不确定性反义疑问句考点反义疑问句考点1.反义疑问句两种反义疑问句两种形式形式2.反义疑问句的反义疑问句的主语主语问题问题3.反义疑问句反义疑问句动词动词选择选择4.反义疑问句的反义疑问句的回答回答陈述句陈述句Part 1两种形式：前肯后否，前否后肯两种形式：前肯后否，前否后肯如：如：They are having an English class,_?She can hardly speak,_?arent theycan shethere反意疑问句基本构成反意疑问句基本构成 He works hard,doesnt he?He is kind,isnt he?He cant dance,can he?陈述句陈述句 ,Part 1助动词助动词 do/does/did have/hasbe动词动词 am/is/are/was/were情态动词情态动词 can/should/must.Part 2主语主语Part 3陈述句陈述句Part 1陈述部分是肯定句还是否定句的判断陈述部分是肯定句还是否定句的判断句子含有否定副词或否定代词方能算否定句句子含有否定副词或否定代词方能算否定句，带有否，带有否定前缀的词不能算做否定句定前缀的词不能算做否定句否定副词：否定副词：no,not,never,hardly,rarely,seldom.否定代词：否定代词：few,little,nothing,no one,nobody,neither,none.否定前缀：否定前缀：un-，non-，in-，dis-,.如：如：He has never been there before.There is nothing I can do to help.The weather yeasterday was unusual.否定句否定句否定句否定句肯定句肯定句 How to use tag questions？Step 2 Step 2 问题导学二问题导学二 1 1关于主语关于主语不定式，动名词做主语时，反义疑问句主语为不定式，动名词做主语时，反义疑问句主语为it主语主语Part 3There be 中，反义疑问句主语为中，反义疑问句主语为there陈述部分主语如果是人称代词主格，保持不变陈述部分主语如果是人称代词主格，保持不变陈述部分主语如果是名词，根据单复数变为陈述部分主语如果是名词，根据单复数变为he,she,it,they陈述部分主语是不定代词，如果指代物陈述部分主语是不定代词，如果指代物（everything,something.），反义疑问句则用），反义疑问句则用it,如果指如果指代人（代人（everyone，anyone.），反义疑问句则用），反义疑问句则用theyStep 3:Step 3:点拨点拨运用（二）运用（二）5 5 Everthing is ready,_?Everyone is here,_?We are busy,_?The workers are busy,_?The doctor is busy,_?There is a book on the desk,_?Nothing goes well,_?Eating too much is bad for health,_?isnt itarent theyarent wearent theyisnt he/sheisnt theredoes itisnt it主语主语Part 3关于主语关于主语关于动词关于动词They work hard,_?He walked slowly,_?They have completed the task,_?Nothing can stop them,_?Everyone will take part,_?It appears to be wrong,_?We seldom go to the cinema,_?The Sports Day is coming soon,_?dont theydidnt he havent they can it wont theydoesnt it do we isnt it 助动词助动词 do/does/didhave/hasbe动词动词 am/is/are/was/were情态动词情态动词 can/should/must.Part 2常见特殊情况常见特殊情况祈使句祈使句祈使句祈使句的反义疑问句的反义疑问句不区分肯定句还是否定句，为不区分肯定句还是否定句，为will you Give me a hand,_?Leave all the things as they are,_?Dont spoil your child,_?Take his dirty gloves away,_?will you will you will you will you will you will you will youLets do.,表示建议，反义疑问句为：表示建议，反义疑问句为：shall weLet us/me/them/.则视作祈使句，反义疑问句为则视作祈使句，反义疑问句为will youLet us know the time of your arrival,_?Lets try again,_?Let me help you,_?Lets have a look on your book,_？will you will you shall we shall we常见特殊情况常见特殊情况含情态动词含情态动词had better,反义疑问句的动词要用反义疑问句的动词要用hadYoud better read it by yourself,_?Youd better not stay here,_?Wed better make a change,_?The tree had better be watered often,_?hadnt youhadnt wehadnt ithad you常见特殊情况常见特殊情况陈述部分的谓语是陈述部分的谓语是used to 时，疑问部分用时，疑问部分用didnt+主语或主语或 usednt+主主语。

语He used to take pictures there,_?The old man used to get up early,_?They used to have just one class in the morning,_?The boy used to walk to school,_?usednt/didnt heusednt/didnt heusednt/didnt theyusednt/didnt he常见特殊情况常见特殊情况How to answer tag questions?Step 2:Step 2:问题导学三问题导学三 1 1Step 3:Step 3:点拨点拨运用（三）运用（三）5 5 回答反意疑问句通常应根据实际情况来确定回答反意疑问句通常应根据实际情况来确定：You are asleep,arent you?You arent asleep,are you?对反意疑问句的回答，无论问题的提法如何，如果事实是肯定的，对反意疑问句的回答，无论问题的提法如何，如果事实是肯定的，就用就用yes，事实是否定的，就用，事实是否定的，就用no要特别注意陈述部分是否定结。

要特别注意陈述部分是否定结构，反意疑问部分用肯定式提问时，回答构，反意疑问部分用肯定式提问时，回答yes或或no与汉语正好相反与汉语正好相反这种省略回答的这种省略回答的yes要译成要译成“不不”，no要译成要译成“是是”No,Im not.No,Im not.Step 4:Step 4:课堂小结课堂小结 2 2 1.反义疑问句（附加疑问句）的定义反义疑问句（附加疑问句）的定义2.反义疑问句（附加疑问句）的用法反义疑问句（附加疑问句）的用法3.反义疑问句（附加疑问句）的回答反义疑问句（附加疑问句）的回答Complete the conversations with appropriate tag questions or correct answers.1.A:Its not going to rain,is it?B:_.Its a good day for sports.A:Then we can play football,_?B:.We dont have a ball.2.A:Its Sports Day next Thursday,_?B:You re right,it is.Lets 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.3.A:Its time for badminton class.Where is the coach?Hes late,_?B:Its been 10 minutes already.He isnt coming,_?A:Cool!We can have a good time.Thats great!B:Shh!A:oh,no,he is right behind me,_?C:Yes,I am.No,it isntcant weisnt itdoesnt sheNo,she doesntisnt heis heisnt he课本课本p40。