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助动词do,does的用法 do用于当主语是第一人称I,第二人称you及复数时（复数包括we,they,these,those及两个以上的人或者事物。does用于当主语是第三人称单数时（第三人称包括she,he,it,this,that,单独的事物或者人名等）。含有实义动词的句型结构变换一、肯定陈述句1当主语是I，you及复数时，谓语动词用原型。 Eg.Iknowit.（Eg.表示例如的意思） Theyhavetwovolleyballs. TinaandTomlikeicecream.2. 当主语是第三人称单数时（第三人称包括she,he,it,this,that,单独的事物或者人名等）。谓语动词要变为第三人称单数形式。P98特别要注意havehasEg.Shehasasetofkeys. Heknowsmyname. Tomneedsacomputergame.二、肯定陈述句变换成否定陈述句1当主语是I，you及复数时，在谓语动词前加donot=dont Eg.Idontknowit.Theydonthavetwovolleyballs. TinaandTomdontlikeicecream.2.当主语是第三人称单数时,在谓语动词前加doesnot=doesnt,谓语动词打回原型Eg.Shedoesnthaveasetofkeys. Hedoesntknowmyname.Tomdoesntneedacomputergame.3、 肯定陈述句变换成一般疑问句采用“一加二变三问号”。 一加：l当主语是I，you及复数时，在句子开头加do;l当主语是第三人称单数时（第三人称包括she,he,it,this,that,单独的事物或者人名等）,在句子开头加does; 二变：l变大小写;l第一人称变为第二人称（I/we变为you,my/our变为your）；l当主语是第三人称单数时,谓语动词要打回原型。三问号： 在句末加问号。肯定回答；Yes,主语+do/does.否定回答：No,主语+dont/doesnt.(主语要用相应的人称代词主格)Eg.Doyouknowit? Yes,Ido./No,Idont.Dotheyhavetwovolleyballs? Yes,theydo./No,theydont.Do Tinaand Tomlikeicecream? Yes,theydo. / No,theydont.Doesshehaveasetofkeys? Yes,shedoes./No,shedoesnt.Doesheknowyourname? Yes,hedoes./No,hedoesnt.DoesTomneedacomputergame? Yes,hedoes./No,hedoesnt.四、肯定陈述句变换成特殊疑问句（对画线部分提问）特殊疑问词+一般疑问句？（去掉画线部分）Eg.Theyhavetwovolleyballs.-Whatdotheyhave? Heknowsmyname.-Whatdoesheknow?练习一找朋友。do does He I she we it you they Jack and Tom a dog 二选词填空。1. Do/Does_ he watch TV at night? Yes, he . 2. Do/Does_ you go to school everyday? No, I .3. Do/Does_ Jack and Peter like apples?4. Do/Does_ Tina go swimming on Sunday?5. Do/Does_they play football? Yes, they _ _do/does6. Do/Does_ we have a good teacher? Yes, we _ _do/does7. Do/Does_ they jump rope ? No, they _ _do not/does not.8. Do/Does_your dog walk in the zoo?9. Do/Does_ I have a big nose? No, you _do not/does not10. Do/Does_ your cats eat fish? Yes, they _.do/does.11. Do/Does_ their mothers go shopping? No, they _do not/does not.12. I _do not/ does not speak Japanese. Do/Does _you speak Japanese?三、改错。1、The dog have a long tail. ( ) _A B C2、His father and mother has a son. ( ) _A B C 3、The U.K.s flag have stars and stripes. ( ) _ A B C4、Tom have a big truck. ( ) _A B C5、Beijing have the Palace Museum. ( ) _ A B C四、 把下列句子改为否定句。1. I have many friends. 2. Her father has two brothers. 3. He has a computer. 4. My cousin has a good friend. 5. He has three pens. 6. Tom has a kite. 7. My teachers have nice pictures. 8. His father has a green car. 9. Jim has a happy family. 10. Jenny has a cup of tea. 五、 把下列句子改为一般疑问句，并作出否定回答。1. They have sandwiches. 2. The school has many trees. 3. She has lovely dogs. 4. Jenny has a brother. 5. They have two bananas. 6. The girl has a big hat. 7. The woman has two babies. 8. Kates mother has a pair of glasses. 9. We have a nice model plane. 10. Tom and Jim have red shirts. 用have, has填空。1. I _ some red ink.2. His father an old car.3. You _ two big eyes.4. Their parents many friends.5. My sister _ a nice skirt.6. The nurses _ white clothes.7. He and she _ some bananas.8. Look, the boy _ some apples.9. Our school twelve classroom.10. The students many books.11. Her sister a new bike.12. Their teacher some nice pictures.13. Your mother_a new bike.14. Li Mings mother_big eyes.15. Jenny and Danny_two black pens.16. The dog_some meat in its mouth.17. The students of Class One_a football.18. Mary_a doll.19. They _some soup for supper.20. Our school_a big library.
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