把句子改为否定句

英语肯定句改为否定句、陈述句改为一般疑问句的方法和诀窍㈠肯定句变为否定句的方法——⑴加；⑵变⑴“加”——是指加not。

加not的规则是：原句中有“情助be”时则直接在“情助be”后加not（not可与“情助be”缩写）；原句中没有“情助be”时则需要另加助动词do/does/did, 然后在助动词do/does/did后加not（not可与助动词do/does/did缩写）。

助动词do和does用于一般现在时，did用于一般过去时。

⑵“变”——是指变化某些需要变化的词（因为某些词只能用于肯定句或只能用用于否定句）。

如：some→any（someone→anyone，something→anything，somewhere→anywhere）；and→or；too/also→either[´aiðə; ´i: ðə]；a lot of→many/much等。

另外，使用助动词does/did帮助否定时，原来的谓语动词要恢复原形。

例：1）He can swim. →He can’t swim.2）He will（将，要）swim. →He won’t(will not) swim.3）He is a good swimmer. →He isn’t a good swimmer.4）I have some English books. →I don’t have any English books.5）She can sing and dance. →She can’t sing or dance.6）Li Lei’s father has a lot of money. →Li Lei’s father doesn’t have much money.7）He went to Shanghai last week. →He didn’t go to Shanghai last week.说明：大多数英语肯定句改为否定句都符合上述规则，但也有一些特殊的情况不符合上述规则，在以后的学习中会学到，要注意积累。

将下列句子改为否定句，每空一词2. I was at the party last Friday.I at the party last Friday.4. There were many people in the park yesterdayThere _ many people in the park yesterday5. She has a TV in her bedroomShe a TV in her bedroom6. They have to clean the classroom after school.They clean the classroom after school.7. He had a big breakfast yesterday.He a big breakfast yesterday.9. Brad lives in Paris.Brad in Paris.10. Joan liked to play tennis and ping-pong.Joan to play tennis ping-pong.12. Jack does his homework at home.Jack his homework at home.13. I went to the beach with my friends last Sunday.I to the beach with my friends last Sunday.15. Do your homework at school.your homework at school.16. Let’s see the pandas first.see the pandas first.19. Jack would like a cup of tea.Jack a cup of tea.20. I think she is very quiet.I she very quiet.改为一般疑问句，每空一词。

英语变否定句的方法1、句中有be动词的，在be动词后加not;2，句中有情态动词的(can ,should，must ，would)，在情态动词后面加not;3.句中没有be动词和情态动词的，在动词前加dont或doesnt ;①句中动词为原形的，加dont .如： I like apples. I dont like apples.②句中动词为三单式的，加doesnt，并将三单式的动词还原成原形。

如：He likes apples. He doesnt like apples.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.2特别形式的否定句(1)肯定句含有every-的合成词时，变否定句时改为no-。

如：Everything is ready.Nothing is ready.(2)肯定句中含有always， usually和ever时，变否定句时改为never。

如：He is always late for school.He is never late for school.(3)肯定句含有many，much时，变否定句时分别改为few，little。

如：Many students know him.Few students know him.(4)肯定句中含有still时，变否定句时应改为no longer。

如：Tom is still in bed.Tom is no longer in bed.(5)肯定句含有both， both...and，all时，变否定句时应改为never，neither...nor，none。

如：Both of us are students.Neither of us is a student.(6)肯定句含有nearly， almost时，变否定句时应改为 hardly。

句型转换专项训练班级：姓名：座号：一、如何改否定句。

否定句就是表示“无、不、没有”等的句子。

1、在be动词后面加not。

可缩略为：is not=isn't are not=aren't（过去式was not=wasn't were not=weren't）.句中的some改为any。

如：（1）I'm going to the Great Wall.→I'm not going to the Great Wall.(2)There is a cinema near here.→There isn't a cinema near here.(3)They are going to take a trip.→They aren't going to take a trip.2、在情态动词can,must,should等后面加not,可缩略为：cannot=can'tmust not=mustn't should not=shouldn't。

如：He can go to the bus stop on foot.→He can't go to the bus stop on foot.3、在主语后面，动词前面加助动词的否定形式don't,（第三人称单数用doesn't）.过去式用didn't.如：（1）I go to school by subway.→I don't go to school by subway.(2)Mike goes to school by subway.→Mike doesn't go to school by subway.(3)Open the door.→Don't open the door.二、如何改一般疑问句。

1、将句中的be动词（am,is,are过去式was,were）或情态动词can提在句子开头，句号改为问号。

肯定句变否定句练习一将下列句子改为否定句，每空一词。

1．We do morning exercises every day．We _______ _______morning exercises every day．2．All of us can swim．_____________________ can swim．3．There is something wrong with my XXX．There ______________wrong with my bike．4．You may stay here before I come back．You ______________here before I come back．5．Read the text after me．______________ the text after me．6．Li Lei needs some help with his English．Li Lei _____________________help with his English．7．He said he would go to Beijing the next week．He ____________________________go to Beijing the next week．8．The bike has already been mended．The bike ______________mended _______．9．I think it is going to XXX．I ____________________________going to rain tomorrow．二把下列句子变成否定句。

1. I am Tom.______________________________2. He is nine.______________________________3. They are pupils.______________________________4. I can fly a kite.______________________________5. He can make a toy._____________________________6. You must go home now._____________________________7. I like Jinan.8. XXX.9. He has many books.10. He has some books.11. There is a pen on the desk.12. There is some water in the glass._________________________________________13. You have got some books.__________________________________________14. You have some books.三变一定句为否认句1. I like to watch TV..2. Xiao Fang and I go to the library every Saturday..3. Tim swims very well..4. Mr. Smith has many books about the cars. .5. I want to play with my friends..6. We feel cold today..7. Bob reads English everyday..8. We do our XXX..9. Mr. White has two houses.10.I’m old, but you’re young.11. He was reading and I was writing.12. He has a car.13. He had some dictionaries.14. You have to go with him.15. XXX.16. We had a good holiday.17. I can finish the work in an hour.18. You must go with us.19. We should help them.20. He works in a XXX.21. We often hear from her.22. I met her at the XXX.四把下列肯定句变成否定句。

肯定句变否定句的基本方法一、动词be 的否定式动词be根据不同的人称和时态可以有am, is, are, was, were等不同形式，可用作连系动词(表示“是”、“在”等)和助动词(用于构成进行时态和被动语态等)，但不管何种情况，构成否定式时，一律在其后加notI’m old, but you’re young. 我老了，但你还年轻。

→I’m not old, but you’re not young. 我还不老，但你不年轻了。

He was reading and I was writing. 他在读，我在写。

→He was not reading and I was not writing. 他没有在读，我没有在写。

二、动词have 的否定式动词have根据不同的人称和时态可以有have, has, had等形式，可以用作实意动词和助动词，分以下情况讨论1. 用作实意动词表示状态，如表示拥有、患病或用于have to表示“必须”等，在构成否定式时可以直接在其后加not，也可根据情况在其前使用don’t, doesn’t, didn’tHe has a car. 他有辆小汽车。

→He hasn’t a car. / He doesn’t have a car. 他没有小汽车。

He had some dictionaries. 他有一些词典。

→He hadn’t any dictionaries. / He didn’t have any dictionaries. 他没有词典。

You have to go with him. 你必须同他一起去。

→You haven’t to go with him. / You don’t have to go w ith him. 你不必同他一起去。

【注】have to构成否定式时以在其前加don’t等较为常见。

2. 用作实意动词表示动作，如表示“吃(=eat)”、“喝(=drink)”、“拿(=take)”、“收到(=receive)”、“度过(=spend)”等，构成否定式时不能直接在其后加not，而应根据情况在其前使用don’t, doesn’t, didn’tHe had some cake for breakfast. 他早餐吃了些蛋糕。

将下列句子改为否定句，每空一词2. I was at the party last Friday.I at the party last Friday.4. There were many people in the park yesterdayThere _ many people in the park yesterday5. She has a TV in her bedroomShe a TV in her bedroom6. They have to clean the classroom after school.They clean the classroom after school.7. He had a big breakfast yesterday.He a big breakfast yesterday.9. Brad lives in Paris.Brad in Paris.10. Joan liked to play tennis and ping-pong.Joan to play tennis ping-pong.12. Jack does his homework at home.Jack his homework at home.13. I went to the beach with my friends last Sunday.I to the beach with my friends last Sunday.15. Do your homework at school.your homework at school.16. Let’s see the pandas first.see the pandas first.19. Jack would like a cup of tea.Jack a cup of tea.20. I think she is very quiet.I she very quiet. 改为一般疑问句，每空一词。

陈述句变否定句一、把下列陈述句改为否定句。

1. We go to school on Sunday.2. We’ll go to the park this afternoon.3. I am watching TV now.4. Jack’father is a teacher.5. The dog runs fast.6. The baby can speak.7. There is some water in the bottle.8. Her mother works hard.9. They like reading books.10. We had lessons this morning.11. I have a doll.12. It is a fish.13. They speak English.14. She can clean the bedroom.15. I have some money in my pocket.Answer:1. We go to school on Sunday.We don’ｔgo to school on Sunday.2. We’ll go to the park this afternoon.We won’ｔgo to the park this afternoon.3. I am watching TV now.I am not watching TV now.4. Jack’father is a teacher.Jack’father isn’ｔ a teacher.5. The dog runs fast.The dog doesn’ｔrun fast.6. The baby can speak.The baby can’ｔspeak.7. There is some water in the bottle.There isn’ｔany water in the bottle.8. Her mother works hard.Her mother doesn’ｔwork hard.9. They like reading books.They don’ｔlike reading books.10. We had lessons this morning.We didn’ｔhave lessons this morning.11. I have a doll.I don’ｔhave a doll.12. It is a fish.It isn’ｔ a fish.13. They speak English.They don’ｔspeak English.14. She can clean the bedroom.She can’ｔclean the bedroom.15. I have some money in my pocket. I don’ｔ have any money in my pocket.陈述句变否定句的练习题I．B e 动词1.He is a boy._______________________________________________ 2.I am your friend._______________________________________________ 3.My sister is a beatiful girl._______________________________________________ 4.My mother is a worker._______________________________________________ 5.They are in the classroom._______________________________________________ 6.There are some books on the bookshelf._______________________________________________ 7.I was at home yesterday._______________________________________________ 8.They were in Beijing ten years ago._______________________________________________ 9. I am looking for a job recently.______________________________________________ 10. The students are playing basketball in the playground. ______________________________________________II．情态动词1.Lucy will be back in a week.______________________________________________2.She can sing a song and draw a picture.______________________________________________3.You can use the dictionary.______________________________________________4.Peter need go home tomorrow.______________________________________________5.You should line up when you wait for a bus.______________________________________________6.We need learn something to cook.______________________________________________7.I can write a book.______________________________________________8.You should say “Sorry” to somebody who you hurt him. ______________________________________________9.He must stay at home to finish his homework.______________________________________________10. I can go to Shanghai Zoo.______________________________________________III．实意动词1.We come from China.______________________________________________ 2.We like the mask.______________________________________________ 3.He likes the violin.______________________________________________ 4.Have some bread, Tom.______________________________________________ 5.Please open your books.______________________________________________ 6. I like Chinese、Maths、Art and PE.______________________________________________ 7.She has a shower in the morning.______________________________________________ 8.Peter did lots of work in the company last night.______________________________________________ 9.They had a lot of fun in past ten years.______________________________________________ 10.I used to play the piano.______________________________________________answer:Be动词1. He is a boy. He is not a boy.2. I am your friend. I am not your friend.3.My sister is a beatiful girl. My sisteris not a beatiful girl.4.My mother is a worker. My mother is not a worker.5.They are in the classroom. They arenot in the classroo.6．There are some books on the bookshelf. There are not any books on the bookshelf.7. I was at home y esterday. I was not at home yesterday.8. They were in Beijing ten years ago. They were not in Beijing ten years ago.9. I am l ooking for a job recently. I am not looking for a job recently.10. The students are playing basketball in the playground.The students are not playing basketball in the playground.II.情态动词11.Lucy will be back in a week.Lucy will not be back in a week.12.She can sing a song and draw apicture.She can not sing a song and draw apicture.13.You can use the dictionary.You can not use the dictionary.14.Peter need go home now.Peter need not go home now15.You should line up when y ou waitfor a bus.You should not line up when you waitfor a bus.16.We need learn something tocook.We need not learn anything to cook.17.I can write a book.I can not write a book.18.You should say “Sorry” tosomebody who you hurt him.You should not say “Sorry” tosomebody who you hurt him.19.He must stay at home to finishhis homework.He must not stay at home to finish hishomework.20.I can go to Shanghai Zoo.I can not go to Shanghai Zoo.III.实意动词21. We come from China.We don’t come from China.22.We like the mask.We don’t like the mask.23.He likes the violin.He doesn’t like the violin.24.Have some bread, Tom.Do not have any bread, Tom.25.Please open your books.Please do not open your books26.I like Chinese、Maths、Art and PE.I don’t like Chinese、Maths、Art andPE27.She has a shower in the morning.She doesn’t have a shower in themorning.28.Peter did lots of work in thecompany last night.She didn’t do a lot of work in thecompany last night.29.They had a lot of fun in past tenyears.They didn’t have a lot of fun in pastten years.30.I used to play the piano.I didn’t use to play the piano.把下面的句子变成否定句。

课时七：肯定句变为否定句的方法一般疑问句的回答1）肯定句变为否定句的方法把肯定句改成否定句分以下情况：1、句中有be动词的，在be动词后加not；2、句中有情态动词的（can ,should，must ，would），在情态动词后面加not；3、句中没有be动词和情态动词的，在动词前加d on’t或doesn’t ；①句中动词为原形的，加d on’t.如： I like apples. →I do n’t like apples.②句中动词为三单式的，加does n’t，并将三单式的动词还原成原形。

如：He likes apples.→ He does n’t like apples.③时态为过去时的,要加didn’t 而且动词过去式要改为原形,例:I went to school yesterday .→I didn’t 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.2) 一般疑问句的回答a) Is Jim a student? b) Can I help you?c) Does she like salad? d) Do they watch TV?e) Is she reading?肯定回答: a) Yes, he is. b) Yes, you can. c) Yes, she does. d) Yes, they do. e) Yes, she is.否定回答: a) No, he isn’t. b) No, you can’t. c) No, she doesn’t. d) No, they don’t. e) No, she isn’t.由Be动词来问，也由Be 动词来回答be : am is areAm I a teacher? Yes,you are . No,you aren't.Is he Tom? Yes,he is . No,he isn't.Is she your friend? Yes,she is . No,she isn't.Is Lucy 8 years old ? Yes,she is. No,she isn't.Is there a book on the desk? Yes,there is .No,there isn'由助动词do, does, did, will提问，也用它们来回答Do you have a book? Yes,I have. No, I haven't.Does he have a pen? Yes,he does. No,he doesn't.Does it like to sleep? Yes,it does. No,it doesn't.Did you lost your way? Yes,I did. No,I didn't.Will he go to the zoo? Yes,he will. No,he Won't.Will you go home? Yes,I will. No,I Won't.情态动词，用can 问，也用它来答Can you sing? Yes,I can. No,I can't.Can he swim? Yes,he can. No,he can't.特殊情况Must I go to school? Yes,you have to. No,you needn't.课堂练习将下列各句改成否定句1、Tom’s 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、I’m a student._______________________把下列句子改写为否定句、一般疑问句及肯定、否定回答1. His father is an English teacher.2. These cats are crying.3. They can swim. I must do my homework now4. I like reading English.5. His sister goes to school on foot.6. Her birthday is on the twentieth of November.7. Mrs. Li and Kitty are in a big shop.8. Kitty is wearing her new uniform.9. Mrs. Li and Kitty watch TV at night.10. I do my homework after school.课后练习把下列句子改写为否定句、一般疑问句及肯定、否定回答1. The boy does some housework at home.2. We are from China.3. Jim has some books.4. I have many books about English.5. My aunt often watches TV.6. There are 5 students in the classroom.7. My parents can play tennis.8. They are my grandparents.9. He is watering the flowers in the park.10. Gina wants a cup of coffeeAre you a student? Are you students? Is that a pencil? Is this a pen? Is it a cat? Does he have an eraser? Did they go swimming? Will they go home? Did he go to school? Can she draw? Can they dance?。

英语语法专项练习句子专项训练把下列陈述句改为否定句。

1.We go to school on Sunday.We don’t go to school on Sunday.答案解析：陈述句改为否定句时，如果句中没有be动词，找主语，如果主语不是第三人称单数，时态是一般现在时，在主语后加don’t。

2.We’ll go to the park this afternoon.We won’t go to the park this afternoon.答案解析：陈述句改为否定句时，will的否定形式是won’t。

3.I am watching TV now.I am not watching TV now.答案解析：陈述句改为否定句时，当句中有be动词时，在be动词后not。

4.Jack’father is a teacher.Jack’father isn’t a teacher.答案解析：陈述句改为否定句时，当句中有be动词时，在be动词后not。

5.The dog runs fast.The dog doesn’t run fast.答案解析：陈述句改为否定句时，如果句中没有be动词，找主语，如果主语是第三人称单数，时态是一般现在时，主语后加doesn’t。

6.The baby can speak.The baby can’t speak.答案解析：陈述句改为否定句时，句中有can ，may等时，在主语后直接加not。

7.There is some water in the bottle.There isn’t any water in the bottle.答案解析：陈述句改为否定句时，当句中有be动词时，在be动词后not,some 要改为any。

8.Her mother works hard.Her mother doesn’t work hard.答案解析：陈述句改为否定句时，如果句中没有be动词，找主语，如果主语是第三人称单数，时态是一般现在时，主语后加doesn’t。