Unit 3 Discovering Useful Structures （ppt课件）(2)-2022新人教版（2019）《高中英语》必修第一册.pptx

1、You are an exchange student,aret you?Yes,I am.你是一名交换生，对吗？是的，我是。1.You are a teacher,_?2.You are not a teacher,_?3.She has never been abroad,_?4.She said nothing,_?5.Mary dislikes sports,_?6.It is impossible,_?arent youare youhas shedid shedoesnt sheisnt it反义疑问句结构：陈述句，简短（一般疑问句）？肯定，否定 否定，肯定You areAre y

2、ou?You canCan you?You eatDo you eat?She eatsDoes she eat?You have finishedHave you finished?否定词都有哪些？否定词都有哪些？谓语结构到底长什么样？谓语结构到底长什么样？动词时态（谓语）一般进行完成完成进行现在is/am/aredo/doesis/am/are+doing have/has+done have/has been doing过去was/weredidwas/were+doinghad+donehad been doing 将来will do be going to do(is/am/are)

3、过去将来would do be going to do(was/were)情态动词+do 构成谓语结构1.1.I an exchange student.I an exchange student.2.2.She an exchange student.She an exchange student.3.3.I an apple.I an apple.4.4.She an apple.She an apple.5.5.I an apple.I an apple.6.6.She an apple.She an apple.7.7.I an apple.I an apple.8.8.She an

4、apple.She an apple.amamis is eateateatseatsam eatingam eatingis eatingis eatingwill eatwill eatwill eatwill eat1.1.I an apple.I an apple.2.2.She an apple.She an apple.3.3.I an apple.I an apple.4.4.She an apple.She an apple.5.5.I an apple.I an apple.6.6.She an apple.She an apple.7.7.I English.I Engli

5、sh.8.8.She English.She English.ateateateatewas eatingwas eatingwas eatingwas eatinghave eatenhave eatenhas eatenhas eatencan speakcan speakcan speakcan speak常见的否定词：no,not,nothing,nobody,none,no,not,nothing,nobody,none,never,hardly(ever),seldom,few,little never,hardly(ever),seldom,few,little 1.1.Few

6、people know him,_?Few people know him,_?2.2.She seldom goes to the cinema,_?She seldom goes to the cinema,_?3.3.Dont make any noise,_?Dont make any noise,_?4.4.Mary doesnt often go skiing,_?Mary doesnt often go skiing,_?5.5.Mike had not turned in his homework by 8 yesterday,_?Mike had not turned in

7、his homework by 8 yesterday,_?6.6.Tom dislikes history,_?Tom dislikes history,_?7.7.Your mother isnt a teacher,_?Your mother isnt a teacher,_?8.8.He looks unhappy today,_?He looks unhappy today,_?do do theytheydoes shedoes she will you will you does shedoes she had hehad he doesnt hedoesnt heis shei

8、s shedoesnt hedoesnt he为什么不用Do you?否定词缀 不是 否定词祈使句祈使句-结构：结构：Do+.Do+.Be+adj.Be+adj.Let us/Lets+.Let us/Lets+.(肯定祈使句）肯定祈使句）Dont+Dont+祈使句在附加疑问句中特殊规则祈使句在附加疑问句中特殊规则Do.,will/wont you?Do.,will/wont you?Dont.,will you?Dont.,will you?Let us.,will you?Let us.,will you?Lets.,shall we?Lets.,shall we?1.Dont talk

9、in class,_?2.Lets go to school,_?3.Let us go to school,_?4.She must hand in her homework,_?5.She must be a good teacher,_?6.She must have finished it yesterday,_?7.She must have finished it,_?will youwill youshall weshall wewill youwill youneednt sheneednt shedidnt shedidnt shehasnt shehasnt shemust

10、must必须必须,neednt,needntisnt isnt sheshemust must 肯定、一定，对现在推测，助动词肯定、一定，对现在推测，助动词由由must must 后后do do 决定决定must must 肯定、一定肯定、一定,对过去推测对过去推测 yesterday yesterday，didnt.?didnt.?must must 肯定、一定，肯定、一定，对过去推测，对过去推测，havent havent/hasnt.?/hasnt.?有时间状语有时间状语无时间状语无时间状语1.She must be a good teacher,_?2.She must have fi

11、nished it yesterday,_?3.She must have finished it,_?4.They all think that Chinese is very important,_?isnt sheisnt shedidnt shedidnt shehasnt shehasnt shedont theydont they从句从句 引导词引导词宾语从句宾语从句主句主句1.He said that his boss had been on a business trip,_?2.It wont matter if Im late for lunch,_?3.I believe

12、 that you have met each other before,_?4.I dont think that youve met John,_?5.There is not any water in the lake,_?主句开头主句开头:I think/suppose/believe/imagineI think/suppose/believe/imagine附加疑问句由 从句 主谓 决定 反之由主句 主谓 决定didnt hedidnt he will itwill ithavent youhavent you have youhave youis thereis there结构：

13、结构：，？陈述句陈述句简短（一般疑问句）简短（一般疑问句）肯定肯定 ，否定，否定否定否定 ，肯定，肯定be/be/情态动词情态动词/助动词助动词(动词时态动词时态开端）开端）+人称代词人称代词（I you he she it.)I you he she it.)特殊规则：特殊规则：1.祈使句祈使句Do.,will/wont you?Do.,will/wont you?Dont.,will you?Dont.,will you?Let us.,will you?Let us.,will you?Lets.,shall we?Lets.,shall we?2.must2.must 必须，必须，ne

14、ednt+neednt+人称代词？一定，肯定一定，肯定对对现在现在推测推测由must must 后面do do 决定对对过去过去推测推测有有表示表示时间时间的词的词didntdidnt+人称代词？没有没有表示表示时间时间词词havent/hasnt havent/hasnt+人称代词？3.3.宾语从句宾语从句（主句（主句+从句）从句）主句:I think/suppose/believe/imagine:I think/suppose/believe/imagine 看从句主谓看从句主谓注意否定前置注意否定前置反之，反之，看主句主谓看主句主谓4.There be.4.There be.那有那有b

15、e+there?be+there?，be be 形式is/am/areis/am/arewas/were was/were been been being being How do we translate the sentence into Chinese?How do we translate the sentence into Chinese?How do we answer the question?How do we answer the question?回答方法：回答方法：实事求是！实事求是！You are hungry,arent you?You are hungry,aren

16、t you?I am hungry.I am hungry.Yes,Yes,I am not hungry.I am not hungry.你饿了，你饿了，是吗？是吗？No,No,You are not hungry,are you?You are not hungry,are you?I am hungry.I am hungry.Yes,Yes,I am not hungry.I am not hungry.No,No,翻译方法：实事求是！翻译方法：实事求是！我饿了。我饿了。是的，是的，不，不，我没饿我没饿。你没饿，对吧？你没饿，对吧？我饿了。我饿了。不，不，我没饿。我没饿。是的，是的，只看陈述句只看陈述句