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

1、Unit 3 Sports and fitnessDiscovering Useful Structures：Make small conversations1.Read the conversations below and underline 1.Read the conversations below and underline the tag questions and their answers.the tag questions and their answers.Amy:Its not a real sport,is it?Shen Qi:Yes,it is.1.Read the

2、 conversations below and underline 1.Read the conversations below and underline the tag questions and their answers.the tag questions and their answers.Adam:That sounds interesting,doesnt it?Julie:Sure,it does.Read the conversations below and underline the tag questions and their answers.Lin Tao:Hi!

3、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.Ive 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.What functions do the tag questions What functions do the

4、tag questions have?have?Function 1:to make confirmationFunction 2:to ask for opinionsWork in pairsSummarySummary2前否后肯型。即“否定句be动词/情态动词/助动词主语(人称代词主格)？”He cant use a computer，can he?can he?He doesnt like ice cream，does he?does he?1前肯后否型。即“肯定句be动词/情态动词/助动词not主语(人称代词主格)？”We can still be friends，cant we?c

5、ant we?She was ill yesterday，wasnt she?wasnt she?3.当陈述部分含有seldom，hardly，scarcely，no，never，rarely，few，little，nobody，nowhere，neither，neither.nor.，too.to.等具有否定意义的词时，附加疑问部分的动词用肯定式。Neither of you will have coffee，will you?will you?She seldom argues with others，does she?does she?4.当陈述部分中的否定式仅带有否定词缀(前缀或后缀)

6、，则将其看成肯定句，附加疑问部分一般仍用否定形式。It is impossible，isnt it?isnt it?SummarySummary5.当陈述部分的主语是these，those以及everybody，everyone，someone，no one，nobody，somebody等合成词或词组时，附加疑问部分的主语往往用they；而当陈述部分的主语为this，that，everything，nothing，something等时，附加疑问部分的主语用it。Everyone knows the answer，dont they?dont they?Something is shinin

7、g，isnt it?isnt it?6.当陈述部分的主语为不定式、动名词或主语从句时，其附加疑问部分的主语用it；当感叹句变附加疑问句时，其主语也用it。Walking is good for health，isnt it?isnt it?Learning how to repair computers takes a long time，doesnt it?doesnt it?SummarySummary7.祈使句的附加疑问句(1)肯定的祈使句的附加疑问句可用will you或wont you。Listen to me carefully，will/wont you?will/wont yo

8、u?(2)否定的祈使句的附加疑问句用will you。Dont play with fire，will you?will you?8.以lets开头的祈使句，附加疑问句用shall we。以let us开头的祈使句，附加疑问句用will you。Lets go home，shall we?shall we?SummarySummary.完成下列疑问句 1We think that English is very useful，_ 2They all think that English is very important，_ 3Everyone has done their best in t

9、he game，_ 4They said that you had finished your work，_dont they?dont they?didnt they?didnt they?isnt it?isnt it?dont they?dont they?即学即用即学即用 5Where we will build the dam has not been decided yet，_ 6To do one good deed is easy for a person，_ 7You must have watched that football match last night，_ 8She never tells a lie，_ 9He can hardly answer this question，_ 10You are from Australia，_arent you?has it?has it?isnt it?isnt it?didnt you?didnt you?does she?does she?can he?can he?