dodoes的用法和练习题

1、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

2、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.tom

3、doesntneedacomputergame.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

4、,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

5、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

6、 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

7、, 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 ha

8、ve 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、. 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 glas

10、ses. 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