七年级英语一般疑问句课件ppy

1、一般疑问句v常见的助动词有：be, have , do .v1.be (am , is ，are )：am 跟 i； is 用单数；are用复数。v2.have 有两种形式：(1). has 用于第三人称单数（she, he , it). (2). have 用于其他人称。v3.do (does, did ): does 用于第三人称单数， did用于一般过去时）v4.行为动词，又叫实义动词，在句中可以独立充当谓语。v注意：行为动词的否定句和疑问句的构成都新需要加助动词do的某种形式。v一般疑问句的构成：就是通过把be动词，情态动词，或助动词提到主语的前面来构成。v一般疑问句肯定回答用“yes

2、 ” , 否定回答用“ no ” . 注意在肯定回答时，yes后面的部分不能缩写。如it is, 不能缩写为 its . he is 不能缩写为hes ,she is 不能缩写为shesvshe is a teacher .vis she a teacher ?vyes , she is . no, she is not isnt.vthis is our dictionary.vis this your dictionary ?vyes, it is . no , it is not isnt.v注意：对疑问句中的指示代词this, that 在回答时要用 it 代替， these, tho

3、se 在回答时要用they 来代替。vthese are our photos .vare these your photos ?vyes, they are . no, they are not arent. i like basketball. do you like basketball ? yes, i do . no, i do not dont. she likes orange. does she like orange ? yes, she does. no, she does not doesnt dont 是 do not 的缩写。 doesnt 是 does not 的缩

4、写 vi have a green pencil .vdo you have a green pencil ?vyes, i do. no, i dont.vhe has a bike.vdoes he have a bike ?vyes, he does. no, he doesnt.v总结:1.人称的变化人称的变化：原句中是 i 的要变为you（你）, 是 we 的要变为you（你们）；是my 的要变为your(你的），原句中是our (我们的）要改为your (你们的)。v2. 加助动词do的某种形式构成的一般疑问句，在回答时不能使用原句中的谓语动词（即行为动词）来作答，而是要使用助动

5、词来作答。v在使用助动词does, did 构成一般疑问句时，原句中的谓语动词要（还原）使用原形。v我们已经学过的情态动词有：vcan: （1）能，会；（2）可能vmust: 必须，一定，不得不。vmay / mei:/: (1) 也许，可能；（2）（征求同意或表示许可）v情态动词后面必须跟 动词原形。vi can play baseball.vcan you play baseball ?vyes, i can. no, i can not cant.vcant 是 can not的缩写。v当你上课迟到了，你要进教室，你该怎么说？vmay i come in ? 或者 can i come

6、in ?v总结：含有情态动词的陈述句变为一般疑问句，只需要把情态动词提到主语的前面。v在回到时要用情态动词作答，不能用动词原形作答。v 一般疑问句专项练习v1. i am an english teacher.v are you an english teacher ?vyes, i am . no, i am not.v2.his father is a doctor.vis his father a doctor ?vyes, he is . no, he isnt.v3.they are in the zoo.vare they in the zoo?vyes, they are . n

7、o, they arent.v4. i have a cat.vdou you have a cat?vyes, i do. no, i dont.v5.they can swim（游泳）vcan they swim?vyes, they can. no, they cant.v6. she likes dog.vdoes she like dog ?vyes, she does . no, she does not doesnt.v7. i go to work by bike every day.vdo he go to work by bike every day ?vyes, he d

8、oes. no, he doesnt.v8.she goes to school by bus .vdoes she go to school by bus ?vyes, she does. no, she doesnt.v9.i do my homework after school.vdo you do your homework after school ?vyes, i do. no, i dont.v改错：下列每题分别有错误，请你找出错误并改正。v1. i have a eraser.vdo you have a eraser.vyes，i have . no, i have not.v2. i am a chinese(中国的 ) boy.v am i a chinese boy ?v3. she likes english.vlike she english?v4. my father likes book.vdoes my fathe