把肯定句改成否定句

把肯定句改成否定句把肯定句改成否定句分以下情况：1、 句中有be动词(am is are was were)的，在be动词后加not；(1) am- am not 缩写形式(2) is- is not (=isnt)(3) are- are not (=arent)(4) was- was not (=wasnt)(5) were- were not (=werent)2、 句中有情态动词（can, should, could）的，在情态动词后面加not； 缩写形式 (1)can- can not (cant) (2)should- should not (shouldnt) (3)could - could not (couldnt)3、 句中没有be动词和情态动词的，在动词前加dont或doesnt 或didnt（注意：dont或doesnt 或didnt后面的动词要用原形。）； 句中动词为原形，在动词前加dont .如： I like apples. I dont like apples. 句中动词为三单式，在动词前加doesnt，并将三单式的动词还原成原形。如：He likes apples. He doesnt like apples.动词为过去式, 在动词前加didnt， 而且动词过去式要改为原形,例:I went to school yesterday .I didnt go to school yeaterday .4.肯定句中的some在否定句中应改为any 如：There are some students in the classroom. There are not any students in the classroom.将下列各句改成否定句1、 Toms brother is walking in the park._2、 His father is driving a bus._3、 The students of Class 5 are cleaning the classroom._4、 Their dog is playing in the room._5、 Tom and Mary are friends._6、These buses are new. _7、There are some books in the bookcase._8、There is a banana in the box._9、 Im a student._10、 She is a farmer._11、 Your father can ride a bike._12、 Mr. Li can draw pictures._13、 They can play football after school._14、 I can go to Shanghai Zoo._15、 You should climb the tree._16、 We come from China._17、 Its time for sports._18、 We like the mask._19、 He likes the violin._20、 Have some bread, Tom._21、 Please open your books._22、 I like Chinese、Maths、Art and PE._23、 Listen to the radio, please._24、 Kick the ball to me._25、 Peter, drink some juice, please._26、 Please watch TV._27、 I am a b