初1下学期新标准英语句式变换专项.ppt

英语句式变换专项练习;专题一 句型转换 内容： 陈述句 ：肯定句 否定句 疑问句 ：一般疑问句 特殊疑问句 肯定句变否定句 句子中有be，在be后加not。（be动词有am ,is ,are,was,were) I am a student. I am not a student. They are blue . They aren’t blue. 3) He is Kangkang. He isn’t Kangkang . 4) I was ten last year. I wasnt ten yesterday. 5) He was good at English. He wasnt good at English. 6)They were at home last Sunday. They werent at home last Sunday. 练习：把下列句子变为否定句 His father is an English teacher._____________________________ He is crying under the tree _____________________________ He was thirteen years old two years ago._______________________;谓语是动词原形，在动词前加don’t。 I have a book . I don’t have a book. They like Chinese . They don’t like Chinese. 3) We come from China. We don’t come from China. 3.谓语动词是第三人称单数，在动词前加doesn’t，动词用原形。 1)She has a small mouth. She doesn’t have a small mouth. 2)Maria likes China. Maria doesn’t like China. 3)Jane comes from the U.S.A. Jane doesn’t come from the U.S.A.;4.谓语动词是一般过去式，在动词前面加didnt,同时动词还原为原型。不分人称和单复数。 1) I watched TV last night. I didnt watch TV last night. 2) They went to the Great Wall the day before yesterday. They didnt go to the Great Wall the day before yesterday. He bought a new T-shirt . He didnt buy a new T-shirt. 句子中有情态动词can和could的，直接在情态动词后面加not He can swim. He cant swim. They could win the game. They could not win the game. 练习：把下列句子变为否定句 ? 1.He looked thin and very serious. _________________________ 2.He lives in Beijing._____________________________;变一般疑问句 1.句子中有be的，直接把be动词提至主语前。如主语为第一人称，应将其改为第二人称。如： 1） Im in Class 2Grade 1． → Are you in Class 2Grade 1？ 2）We were watching TV． → Were you watching TV？ 2.陈述句中有情态动词（can could …）时，也可直接将它们提至主语前，即可成为一般疑问句。如： 1)He can swim now． → Can he swim now？ 2)The children could come with us． → Could the children come with us？ 句子中谓语为实意动词时，若是一般现在时，第一人称、第二人称和复数，用助动词do,第三人称借does;若是过去式，则借用did I get up early.