肯定句和否定句专项练习.doc

肯定句和否定句专项练习肯定句和否定句专项练习 一、肯定句 1、含有 be 动词的肯定句 将 be 动词（is、am、are 如果是过去时态，则 is、am 过去式为 was，are 过 去式为 were）放在主语后构成含有 be 动词的肯定句，其中如果是 Are you 构成一般疑问句则改为 I am1、Are you a boy? (改肯定句) I am a boy. 2、Is she going to the post office? (改肯定句) She is going to the post office. 3、Are they watching TV now? (改肯定句) They are watching TV now. 4、Were you a student? (改肯定句) I was a student.2、含有动词的肯定句 一般由 Do/Does/Did 引导一般疑问句改为肯定句，如果由 Do 引起疑问句， 则肯定句中动词用原形，如果用 Does 引起疑问句，则肯定句中动词加 s 或者 es, 如果用 Did 引起疑问句，则肯定句中动词用过去式（一般动词过去式在动词后 加 ed ,不规则过去式除外）1、Do you go to school on foot? (改肯定句) I go to school on foot. 2、Does she go swimming in the afternoon? (改肯定句) She goes swimming in the afternoon. 3、Does your father like playing football? (改肯定句) My father likes playing football. 4、Did you go fishing yesterday? (改肯定句) I went fishing yesterday. 5、Did Tom clean his room last weekend? (改肯定句) Tom cleaned his room last weekend.3、含有 can、should、must、would 等情态动词的肯定句 将句子中 can、should、must、would 等情态动词放在主语后面，其中主语 you 改为 I.1、Can you fly kites? (改肯定句) I can fly kites.2、Should you do your homework now? (改肯定句) I should do my homework now.肯定句练习肯定句练习1、Is it a fine day today? (改为肯定句)2、Is he thin and short? (改为肯定句) 3、Is there a river in the park? (改为肯定句)4、Are you drawing pictures now? (改为肯定句)5、Is he writing an E-Mail in the room? (改为肯定句)6、Is there a cinema near here? (改为肯定句)7、Do you have English on Tuesday? (改为肯定句)8、Were you 12? (改为肯定句)9、Was she a beautiful girl? (改为肯定句)10、Do you do your homework? (改为肯定句)11、Does she have a computer? (改为肯定句)12、Does Amy go to school by bike? (改为肯定句)13、Did you read books yesterday? (改为肯定句)14、Did Tom go fishing last weekend? (改为肯定句)15、Can you use a computer? (改为肯定句)16、Can she sweep the floor? (改为肯定句)17、Should you wait at a yellow light? (改为肯定句)18、Must you follow the traffic rules? (改为肯定句)二、否定句1、句子中有 Be 动词的在 Be(is/am/are)后面加 not.I am 150cm tall. （改否定句） I am not 150cm tall. She is an actress. （改否定句） She is not an actress. We are going to the park next week. （改否定句）We are not going to the park next week.2、句子中有情态动词（can、should、must、would 等）在情态动词后面加 not.Mr.Li can draw pictures. （改否定句） Mr.Li can not draw pictures. You should climb the tree. （改否定句） You should not climb the tree.3、句子中没有 Be 动词和情态动词的（即仅有动词）就在动词前，主语后 面加 don’t/doesn’t .1、如果主语为第一、第二人称（或者句中动词为原形的）改为否定句就加 don’t.I like apples. （改为否定句） I don’t like apples.They do homework on the weekend. （改为否定句） They don’t do homework on the weekend.2、如果主语为第三人称（体现在动词加 s 或者 es）改否定句加 doesn’t ,并 将动词还原为原形。

He visits his grandparents in the morning. （改为否定句） He doesn’t visit his grandparents in the morning. Amy goes to school by bike. （改为否定句） Amy doesn’t go to school by bike.3、如果动词为过去式，则在动词前，主语后加 didn’t.其后动词用原形I washed the clothes yesterday. （改为否定句） I didn’t wash the clothes yesterday. She went hiking. （改为否定句）She didn’t go hiking.4、肯定句中 some 在否定句中应改为 any.5、 There are some students in the classroom. （改为否定句） There are not any students in the classroom.否定句训练否定句训练1、The apples are sweet. （改为否定句）2、The fish is fresh . （改为否定句）3、I am going to the post office. （改为否定句）4、I am watching TV now. （改为否定句）5、There are some apples on the tree. （改为否定句）6、I have some apples. （改为否定句）7、There is a desk in the classroom. （改为否定句）8、She gets up at 8 . （改为否定句）9、Lily goes to school by plane . （改为否定句）10、Tom watched TV last night. （改为否定句）11、He went swimming last weekend. （改为否定句）12、She likes to walk home . （改为否定句）13、Mike did housework on the weekend . （改为否定句）14、It was sunny day. （改为否定句）15、I can cook the meals. （改为否定句）16、She can swim in the lake. （改为否定句）17、We should go to the park on foot. （改为否定句）18、Tony must do his homework on Sundays. （改为否定句）。