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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.I know it.（Eg.表示例如的意思）They have two volleyballs.Tina and Tom like ice cream.2.当主语是第三人称单数时（第三人称
2、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 havehas Eg.She has a set of keys.He knows my name.Tom needs a computer game.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 do not=dont Eg.I dont know it.They dont have two volleyballs.Tina and Tom dont like ice cream.2.当主语是第三人称单数时,在谓语动词前加 does
3、not=doesnt,谓语动词打回原型 Eg.She doesnt have a set of keys.He doesnt know my name.Tom doesnt need a computer game.三、肯定陈述句变换成一般疑问句采用“一加二变三问号”。一加：当主语是 I，you 及复数时，在句子开头加 do;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：变大小写;第一人称变为第二人称（I/we 变为 you,my/our 变为 your）；当主语是第三人称单数时,谓语动词要打回原型。三问号：
4、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.Do you know it?Yes,I do./No,I dont.Do they have two volleyballs?Yes,they do./No,they dont.Do Tina and Tom like ice cream?Yes,they do./No,they dont.Does she have a set of keys?Yes,she does./No,she doesnt.Does he know your name?Yes,he
5、 does./No,he doesnt.Does Tom need a computer game?Yes,he does./No,he doesnt.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.They have two volleyballs.-What do they have?He knows my name.-What does he know?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
6、?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/does 6.Do/Does_ we have a good teacher?Yes,we _ _do/does 7.Do/Does_ they jump rope?No,they _ _do not/does not.8.Do/Does_your dog
7、 walk in the zoo?9.Do/Does_ I have a big nose?No,you _do not/does not 10.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 C 2、His fath
8、er and mother has a son.()_ A B C 3、The U.K.s flag have stars and stripes.()_ A B C 4、Tom have a big truck.()_ A B C 5、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
9、 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 wo
10、man 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 b
11、ananas.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.