英语肯定句变否定句练习(优.选)
四年级英语肯定句转否定句单选题20题
四年级英语肯定句转否定句单选题20题1.I am happy.（改为否定句）I ____ happy.A.am notB.is notC.are not答案：A。
在含有be 动词am 的肯定句变否定句时，直接在am 后加not。
选项B 是is not，is 与第三人称单数连用，这里主语是I，不能用is。
选项C 是are not，are 与第二人称及复数连用，这里主语是I，不能用are。
2.She is a teacher.（改为否定句）She ____ a teacher.A.is notB.am notC.are not答案：A。
在含有be 动词is 的肯定句变否定句时，直接在is 后加not。
选项B 是am not，am 与I 连用，这里主语是she，不能用am。
选项C 是are not，are 与第二人称及复数连用，这里主语是she，不能用are。
3.We are students.（改为否定句）We ____ students.A.am notB.is notC.are not答案：C。
在含有be 动词are 的肯定句变否定句时，直接在are后加not。
选项A 是am not，am 与I 连用，这里主语是we，不能用am。
选项B 是is not，is 与第三人称单数连用，这里主语是we，不能用is。
4.It is a book.（改为否定句）It ____ a book.A.is notB.am notC.are not答案：A。
在含有be 动词is 的肯定句变否定句时，直接在is 后加not。
选项B 是am not，am 与I 连用，这里主语是it，不能用am。
选项C 是are not，are 与第二人称及复数连用，这里主语是it，不能用are。
5.They are friends.（改为否定句）They ____ friends.A.am notB.is notC.are not答案：C。
四年级英语肯定句改否定句单选题40题
四年级英语肯定句改否定句单选题40题1.I am a student.变为否定句是：I am not a student.下列选项中正确的一项是：A.I am a student.B.I am not a student.C.I'm student.答案：B。
在含有be 动词的肯定句改否定句时，在be 动词后加not。
A 选项是原句，不是否定句。
C 选项缺少冠词a，且没有改成否定形式。
2.She is a teacher.变为否定句是：She is not a teacher.下列选项中正确的一项是：A.She is a teacher.B.She is not a teacher.C.She's teacher.答案：B。
含有be 动词的肯定句改否定句，在be 动词后加not。
A 选项是原句，不是否定句。
C 选项缺少冠词a，且没有改成否定形式。
3.We are friends.变为否定句是：We are not friends.下列选项中正确的一项是：A.We are friends.B.We are not friends.C.We're friend.答案：B。
含有be 动词的肯定句改否定句，在be 动词后加not。
A 选项是原句，不是否定句。
C 选项friend 是可数名词，前面缺少冠词或用复数形式，且没有改成否定形式。
4.He is a boy.变为否定句是：He is not a boy.下列选项中正确的一项是：A.He is a boy.B.He is not a boy.C.He's boy.答案：B。
含有be 动词的肯定句改否定句，在be 动词后加not。
A 选项是原句，不是否定句。
C 选项缺少冠词a，且没有改成否定形式。
5.They are students.变为否定句是：They are not students.下列选项中正确的一项是：A.They are students.B.They are not students.C.They're student.答案：B。
四年级英语肯定句改否定句单选题40题
四年级英语肯定句改否定句单选题40题1.She likes apples.A.She not likes apples.B.She doesn't like apples.C.She don't like apples.答案：B。
本题考查一般现在时中主语是第三人称单数时肯定句改否定句的方法。
一般现在时中，主语是第三人称单数时，否定句要用doesn't + 动词原形。
A 选项形式错误。
C 选项don't 不能用于第三人称单数。
2.I am a student.A.I not am a student.B.I am not a student.C.I'm not a student.答案：B、C。
本题考查be 动词的否定形式。
be 动词的否定形式是在be 动词后加not。
A 选项形式错误。
B 和C 选项都是正确的表达。
3.He is a teacher.A.He not is a teacher.B.He isn't a teacher.C.He is not a teacher.答案：B、C。
本题考查be 动词的否定形式。
be 动词的否定形式是在be 动词后加not，可以缩写为isn't。
A 选项形式错误。
B 和C 选项都是正确的表达。
4.They play football.A.They not play football.B.They don't play football.C.They do not play football.答案：B、C。
本题考查一般现在时中主语是复数时肯定句改否定句的方法。
一般现在时中，主语是复数时，否定句要用don't + 动词原形。
A 选项形式错误。
B 和C 选项都是正确的表达。
5.We go to school.A.We not go to school.B.We don't go to school.C.We do not go to school.答案：B、C。
肯定句变否定句练习题三年级英语
肯定句变否定句练习题三年级英语1. 肯定句：The cat is on the table.否定句：The cat is not on the table.2. 肯定句：I have a new toy.否定句：I do not have a new toy.3. 肯定句：She is playing with her friends.否定句：She is not playing with her friends.4. 肯定句：The sun is shining brightly.否定句：The sun is not shining brightly.5. 肯定句：We can see the stars at night.否定句：We cannot see the stars at night.6. 肯定句：He likes to eat apples.否定句：He does not like to eat apples.7. 肯定句：They are going to the park.否定句：They are not going to the park.8. 肯定句：My sister watches TV every day.否定句：My sister does not watch TV every day.9. 肯定句：The birds are singing in the trees.否定句：The birds are not singing in the trees.10. 肯定句：There is a book on the shelf.否定句：There is not a book on the shelf.11. 肯定句：We have a big house.否定句：We do not have a big house.12. 肯定句：She can swim in the pool.否定句：She cannot swim in the pool.13. 肯定句：They are having lunch now.否定句：They are not having lunch now.14. 肯定句：The flowers are beautiful.否定句：The flowers are not beautiful.15. 肯定句：He is reading a book.否定句：He is not reading a book.16. 肯定句：I am happy to see you.否定句：I am not happy to see you.17. 肯定句：The dog is barking at the door.否定句：The dog is not barking at the door.18. 肯定句：She has a lot of homework.否定句：She does not have a lot of homework.19. 肯定句：They are listening to music.否定句：They are not listening to music. 20. 肯定句：There are many cars on the road.否定句：There are not many cars on the road.这些练习题可以帮助三年级的学生练习将肯定句转换为否定句，理解否定句的结构，并提高他们的英语语法能力。
[精品]把肯定句改成否定句
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[精品]把肯定句改成否定句一、首先，要看肯定句中是否有情态动词，如果有情态动词，直接在情态动词后面加not即可，同时句中如果有some，some就要变成any。
举例如下：1、肯定句：Mike can help you solve the problem.译文：迈克可以帮你解决那个问题。
否定句：Mike can't help you solve the problem. (can't=can not)译文：迈克不能帮你解决那个问题。
2、肯定句：You should lend some money to Mary.译文：你应该借给玛丽一些钱。
否定句：You shouldn't lend any money to Mary. (shouldn't=should not)译文：你不应该借钱给玛丽。
二、如果肯定句中没有情态动词，那就要看句中有无be动词的相应形式，如果有，直接在be动词后面加not，句中有some，some变any。
举例如下：1、肯定句：I am an English teacher.译文：我是一名英语老师。
否定句：I‘m not an English teacher.译文：我不是一名英语老师。
2、肯定句：There are some books on the desk.译文：书桌上有一些书。
否定句：There aren't any books on the desk.译文：书桌上没有书。
三、如果肯定句中既没有情态动词，也没有be动词，那么就要用相应的助动词加上not来变换，句中有some，some变any。
举例如下：1、肯定句：She likes helping others.译文：她喜欢帮助别人。
否定句：She doesn't like helping others.译文：她不喜欢帮助别人。
2、肯定句：They have some apples.译文：他们有一些苹果。
四年级英语肯定句改否定句练习题50题含答案解析
四年级英语肯定句改否定句练习题50题含答案解析1.I am a student.A.I am not a student.B.I am no a student.答案解析：A。
在肯定句变否定句时，be 动词后直接加not。
选项B 是错误的，“no”不能直接放在be 动词后修饰名词。
2.She is a teacher.A.She is not a teacher.B.She isn't a teacher.C.She no is a teacher.答案解析：A 和B 都是正确的表达方式。
在肯定句变否定句时，be 动词后直接加not，可以缩写为isn't。
选项C 是错误的，“no”不能直接放在be 动词后修饰名词。
3.He is a doctor.A.He is not a doctor.B.He isn't a doctor.C.He no is a doctor.答案解析：A 和B 都是正确的表达方式。
在肯定句变否定句时，be 动词后直接加not，可以缩写为isn't。
选项C 是错误的，“no”不能直接放在be 动词后修饰名词。
4.We are friends.A.We are not friends.C.We no are friends.答案解析：A 和B 都是正确的表达方式。
在肯定句变否定句时，be 动词后直接加not，可以缩写为aren't。
选项C 是错误的，“no”不能直接放在be 动词后修饰名词。
5.They are students.A.They are not students.B.They aren't students.C.They no are students.答案解析：A 和B 都是正确的表达方式。
在肯定句变否定句时，be 动词后直接加not，可以缩写为aren't。
选项C 是错误的，“no”不能直接放在be 动词后修饰名词。
三年级英语肯定句转换否定句练习题50题含答案解析
三年级英语肯定句转换否定句练习题50题含答案解析1.I am a boy.A.I am not a boy.答案解析：肯定句变否定句，在be 动词后加not。
此句中在am 后加not 变为否定句。
2.She is a teacher.A.She is not a teacher.答案解析：肯定句变否定句，在be 动词后加not。
此句中在is 后加not 变为否定句。
3.He is a student.A.He is not a student.答案解析：肯定句变否定句，在be 动词后加not。
此句中在is 后加not 变为否定句。
4.We are friends.A.We are not friends.答案解析：肯定句变否定句，在be 动词后加not。
此句中在are 后加not 变为否定句。
5.They are happy.A.They are not happy.答案解析：肯定句变否定句，在be 动词后加not。
此句中在are 后加not 变为否定句。
6.I have a book.A.I do not have a book.答案解析：肯定句中有实义动词have，变否定句借助助动词do，在do 后加not，have 用原形。
7.She has a pen.A.She does not have a pen.答案解析：肯定句中有实义动词has，变否定句借助助动词does，在does 后加not，has 变为have。
8.He likes apples.A.He does not like apples.答案解析：肯定句中有实义动词likes，变否定句借助助动词does，在does 后加not，likes 变为like。
9.We play games.A.We do not play games.答案解析：肯定句中有实义动词play，变否定句借助助动词do，在do 后加not。
10.They sing songs.A.They do not sing songs.答案解析：肯定句中有实义动词sing，变否定句借助助动词do，在do 后加not。
四年级英语肯定句变否定句例题
四年级英语肯定句变否定句例题
将肯定句变为否定句，我们需要根据句子的谓语动词来选择合适的否定词。
以下是几个四年级英语肯定句变否定句的例题：
"I like apples." （我喜欢苹果。
）
否定句： "I don't like apples." （我不喜欢苹果。
）
"We go to school every day." （我们每天都上学。
）
否定句： "We don't go to school every day." （我们不是每天都上学。
）
"My brother is a doctor." （我哥哥是医生。
）
否定句： "My brother is not a doctor." （我哥哥不是医生。
）
"She sings beautifully." （她唱得很美。
）
否定句： "She doesn't sing beautifully." （她唱得不好听。
）
"They have a cat at home." （他们家养了一只猫。
）
否定句： "They don't have a cat at home." （他们家没有养猫。
）
在将这些句子变为否定句时，请确保遵循正确的语法规则，如动词的时态和语态，以及主谓一致等。
四年级英语肯定句改否定句练习题50题含答案解析
四年级英语肯定句改否定句练习题50题含答案解析1. I am happy.改否定句：I am not happy.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在am 后加not 变为否定句。
2. She is a student.改否定句：She is not a student.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在is 后加not 变为否定句。
3. He is tall.改否定句：He is not tall.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在is 后加not 变为否定句。
4. We are friends.改否定句：We are not friends.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在are 后加not 变为否定句。
5. They are good.改否定句：They are not good.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在are 后加not 变为否定句。
6. I am a boy.改否定句：I am not a boy.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在am 后加not 变为否定句。
7. She is beautiful.改否定句：She is not beautiful.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在is 后加not 变为否定句。
8. He is strong.改否定句：He is not strong.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在is 后加not 变为否定句。
9. We are happy.改否定句：We are not happy.答案解析：在肯定句变否定句时，在be 动词后加not。
本题中在are 后加not 变为否定句。
10. They are students.改否定句：They are not students.答案解析：在肯定句变否定句时，在be 动词后加not。
全新小学英语肯定句变否定句和一般疑问句类型(含答案).优选
肯定句改否定句和一般疑问句一、实义动词He often goes to bed at ten.We do eye exercises every day.She came to Japan in 1990.二、系动词I am your friend.Her mother is a teacher.There are two books on the desk. Yesterday was July 1, 1995.They were in Beijing in 1990.三、进行时The girl is standing at the station.The students are playing basketball on the playground..I am looking for a dog.四、情态动词Lucy will be back in four days.You can use this dictionary. You need go tomorrow.You should study hard..将下列陈述句变为否定句和一般疑问句。
1.He found his pen under his desk.2.We must go to the meeting right now.3.I wrote him a letter last week.4.My sister sings beautifully.5.Mary missed the bus.6.This bus will take you right to the city.7.They are doing questions and answers with theteachers.8.My father has his lunch at 11:30 everyday.9.There is a policeman at the corner of the road..10.Wang made some model ships for the boys.11.I saw somebody in the room just now.12.There is some wonderful news in today’s paper.13.Xiao Li dropped the letter into the letter box.14.They are playing on the playground.15.Tom often tells them stories in French.16.After class some students play balls.17.Mary is reading newspaper now.18.I telephoned you yesterday.19.You have to go now.20.I have a house in the country.21.We did our homework together.22.They study for examination.23.We are talking about the film.24.I can go to the zoo today. 25.The first class begins at eight o’clock.26.It takes you three hours to go to Paris by air.27.I reviewed my lessons yesterday.28.I’ll go home by bus.29.He forgot to post the letter this morning.30.This room is going to be painted next week.肯定句变否定句和一般疑问句类型答案一、实义动词He often goes to bed at ten.→He does not often go to bed at ten.→Does he often go to bed at ten?We do eye exercises every day.→We don’t do eye exercises every day.→Do you do eye exercises every day?She came to Japan in 1990.→She did not come to Japan in 1990.→Did she come to Japan in 1990?二、系动词I am your friend.→I am not your friend.→Are you my friend?Her mother is a teacher.→Her mother is not a teacher→Is her mother a teacher?There are two books on the desk.→There are not two books on the desk→Are there two books on the desk?Yesterday was July 1, 1995.→Yesterday was not July 1, 1995.→Was yesterday July 1, 1995?They were in Beijing in 1990.→They were not in Beijing in 1990→Were they in Beijing in 1990?三、进行时The girl is standing at the station.→The girl is not standing at the station.→Is the girl standing at the station?The students are playing basketball on the playground.→The students are not playing basketball on the playground.→Are the students playing basketball on the playground?I am looking for a dog.→I am not looking for a dog.→Are you looking for a dog?He was writing letters at this time last night.→He was not writing letters at this time last night.→Was he writing letters at this time last night? We were having a meeting this time yesterday.→We were not having a meeting this time yesterday.→Were you having a meeting this time yesterday?四、情态动词Lucy will be back in four days.→Lucy will not be back in four days.→Will Lucy be back in four days?You can use this dictionary.→You can not use this dictionary.→Can I use this dictionary?You need go tomorrow.→You need not go tomorrow.→Need I go tomorrow?You should study hard.→You should not study hard..→should I study hard?将下列陈述句变为否定句和一般疑问句。
三年级英语肯定句转换否定句练习题50题含答案解析
三年级英语肯定句转换否定句练习题50题含答案解析1.I am a student.A.I am not a student.B.I am no a student.C.I not am a student.答案解析：A。
在肯定句变否定句时，有be 动词的情况下，在be 动词后加not。
所以“I am a student.”变为否定句是“I am not a student.”。
2.He is a teacher.A.He is not a teacher.B.He is no a teacher.C.He not is a teacher.答案解析：A。
有be 动词is 的肯定句“He is a teacher.”变否定句在is 后加not，即“He is not a teacher.”。
3.She is happy.A.She is not happy.B.She is no happy.C.She not is happy.答案解析：A。
肯定句“She is happy.”变否定句，在is 后加not 变为“She is not happy.”。
4.We are friends.A.We are not friends.B.We are no friends.C.We not are friends.答案解析：A。
有be 动词are 的肯定句“We are friends.”变否定句在are 后加not，即“We are not friends.”。
5.They are boys.A.They are not boys.B.They are no boys.C.They not are boys.答案解析：A。
肯定句“They are boys.”变否定句，在are 后加not 变为“They are not boys.”。
6.I am tall.A.I am not tall.B.I am no tall.C.I not am tall.答案解析：A。
小学英语肯定句变否定句和一般疑问句类型(含答案)(训练习题)
肯定句改否定句和一般疑问句一、实义动词He often goes to bed at ten.We do eye exercises every day.She came to Japan in 1990.二、系动词I am your friend.Her mother is a teacher.There are two books on the desk.Yesterday was July 1, 1995.They were in Beijing in 1990.三、进行时The girl is standing at the station.The students are playing basketball on the playground..I am looking for a dog.四、情态动词Lucy will be back in four days. You can use this dictionary.You need go tomorrow.You should study hard..将下列陈述句变为否定句和一般疑问句。
1.He found his pen under his desk.2.We must go to the meeting right now.3.I wrote him a letter last week.4.My sister sings beautifully.5.Mary missed the bus.6.This bus will take you right to the city.7.They are doing questions and answers with theteachers.8.My father has his lunch at 11:30 everyday.9.There is a policeman at the corner of the road..10.Wang made some model ships for the boys.11.I saw somebody in the room just now.12.There is some wonderful news in today’s paper.13.Xiao Li dropped the letter into the letter box.14.They are playing on the playground.15.Tom often tells them stories in French.16.After class some students play balls.17.Mary is reading newspaper now.18.I telephoned you yesterday.19.You have to go now.20.I have a house in the country.21.We did our homework together.22.They study for examination. 23.We are talking about the film.24.I can go to the zoo today.25.The first class begins at eight o’clock.26.It takes you three hours to go to Paris by air.27.I reviewed my lessons yesterday.28.I’ll go home by bus.29.He forgot to post the letter this morning.30.This room is going to be painted next week.肯定句变否定句和一般疑问句类型答案一、实义动词He often goes to bed at ten.→He does not often go to bed at ten.→Does he often go to bed at ten?We do eye exercises every day.→We don’t do eye exercises every day.→Do you do eye exercises every day?She came to Japan in 1990.→She did not come to Japan in 1990.→Did she come to Japan in 1990?二、系动词I am your friend.→I am not your friend.→Are you my friend?Her mother is a teacher.→Her mother is not a teacher→Is her mother a teacher?There are two books on the desk.→There are not two books on the desk→Are there two books on the desk?Yesterday was July 1, 1995.→Yesterday was not July 1, 1995.→Was yesterday July 1, 1995?They were in Beijing in 1990.→They were not in Beijing in 1990→Were they in Beijing in 1990?三、进行时The girl is standing at the station.→The girl is not standing at the station.→Is the girl standing at the station?The students are playing basketball on the playground. →The students are not playing basketball on the playground.→Are the students playing basketball on the playground?I am looking for a dog.→I am not looking for a dog.→Are you looking for a dog?He was writing letters at this time last night.→He was not writing letters at this time last night.→Was he writing letters at this time last night?We were having a meeting this time yesterday.→We were not having a meeting this time yesterday.→Were you having a meeting this time yesterday?四、情态动词Lucy will be back in four days.→Lucy will not be back in four days.→Will Lucy be back in four days?You can use this dictionary.→You can not use this dictionary.→Can I use this dictionary?You need go tomorrow.→You need not go tomorrow.→Need I go tomorrow?You should study hard.→You should not study hard..→should I study hard?将下列陈述句变为否定句和一般疑问句。
肯定句改否定句英语练习题
肯定句改否定句英语练习题一、单句改写1. She is happy. -> She is not happy.2. They have finished their homework. -> They have not finished their homework.3. He can swim very well. -> He cannot swim very well.4. The students are studying in the library. -> The students are not studying in the library.5. My friend has a car. -> My friend does not have a car.6. We will go to the party tomorrow. -> We will not go to the party tomorrow.7. The weather is nice today. -> The weather is not nice today.8. I like chocolate. -> I do not like chocolate.9. He usually arrives early. -> He usually does not arrive early.10. They have been to China before. -> They have not been to China before.二、句子改写1. Mary can play the piano. -> Mary cannot play the piano.2. The cat is sleeping on the chair. -> The cat is not sleeping on the chair.3. We should go to the meeting. -> We should not go to the meeting.4. She will buy a new dress for the party. -> She will not buy a new dress for the party.5. They have already watched the movie. -> They have not watched the movie yet.6. He is wearing a red shirt today. -> He is not wearing a red shirt today.7. We often eat lunch together. -> We do not often eat lunch together.8. The dog likes to chase squirrels. -> The dog does not like to chase squirrels.9. She can speak three languages fluently. -> She cannot speak three languages fluently.10. They go to the gym every Monday. -> They do not go to the gym every Monday.三、短文改写Yesterday, I had a delicious dinner with my family at a fancy restaurant. The food was amazing and the service was excellent. After dinner, we went for a walk in the park and enjoyed the beautiful evening breeze. It was a perfect day.改写后的短文：Yesterday, I did not have a delicious dinner with my family at a fancy restaurant. The food was not amazing and the service was not excellent. After dinner, we did not go for a walk in the park and did not enjoy the beautiful evening breeze. It was not a perfect day.四、对话改写A: Can you help me with my math homework? B: Yes, I can help you.改写后的对话：A: Can you help me with my math homework? B: No, I cannot help you.。
英语肯定句变否定句练习
英语肯定句变否定句练习英语肯定句变否定句练习 Prepared on 22 November 2020专题: 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 schoolyeaterday .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、Tom’s brother is walking in the park.______________________________________________________3、The students of Class 5 are cleaning the classroom.______________________________________________________5、Tom and Mary are friends.______________________________________________________7、There are some books in the bookcase.______________________________________________________9、I’m a stud ent.______________________________________________________11、Your father can ride a bike.______________________________________________________13、They can play football after school.______________________________________________________16、We come from China.______________________________________________________19、He likes the violin.______________________________________________________20、Have some bread, Tom.______________________________________________________一般疑问句一般疑问句在英语的学习中，一般疑问句的转换及回答是经常碰到的问题，现在我们就来探讨一下有关一般疑问句的问题。
小学英语肯定句改为否定句(知识点+练习题)
英语语法：肯定句如何变为否定句？一、陈述句、肯定句、否定句、肯定陈述句、否定陈述句、祈使句•陈述句：Lily is a student. •祈使句：Open the door.•肯定句：Lily is a student. •否定句：Lily is not a student. •肯定陈述句：Lily is a student •否定陈述句：Lily is not a student.t二、动词：一般表示动作或者状态Be动词:is、am、are情态动词：can、should、will、may、must、need助动词: do、does(第三人称单数）实义动词： have、has（第三人称单数）三、动词+not 的缩写三、肯定句改为否定句（1）肯定句改为否定句：找到Be动词，在后面加not。
找到Be动词：is、am、are，在Be动词后面直接加not，变成is not,am not ,are not，或缩写成isn’t,am not,aren’t例如：肯定句1：Amy is a good girl. 否定句1：Amy is not a good girl. 肯定句2：I am a student. 否定句2：I am not a student.肯定句3：These flowers are very beautiful.否定句3：These flowers are not very beautiful.（2）肯定句改为否定句：找到情态动词，在后面加not。
找到情态动词：can、should、will、may、must、need，在情态动词后面直接加not ，变成 can not, should not, will not,may not，must not，need not 或缩写成can’t ，shouldn't，won’t ，mayn't，mustn't，needn’t例如：肯定句1：I can speak English. 否定句1：I can not speak English.肯定句2：You should go now. 否定句2：You should not go now.肯定句3：I must do my homework. 否定句3：I must not do my homework.（3）肯定句改为否定句：在动词前面加 don't 或doesn't。
英文句子种类肯定句和否定句
英文句子种类肯定句和否定句英文句子种类:肯定句和否定句篇一：英语肯定句变否定句练习专题:把肯定句换成否定句把肯定句改成否定句分以下情况：1、句中存有be动词的，在be动词后提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be动词和情态动词的，在动词kadon’t或doesn’t；①句中动词为原形的，加don’t.如：ilikeapples.?idon’tlikeapples.②句中动词为三单式的，加doesn’t，并将三单式的动词还原成原形。
例如：helikesapples.?hedoesn’tlikeapples.③时态为过去时的,要加didn’t而且动词过去式要改为原形,基准:iwenttoschoolyesterday.→ididn’tgotoschoolyeaterday.4.肯定句中的some在否定句中应改为any例如：therearesomestudentsintheclassroom.?therearenotanystudentsintheclassroom.将下列各句改成否定句1、tom’sbrotheriswalkinginthepark.______________________________________________________3、thestudentsofclass5arecleaningtheclassroom.______________________________________________________5、tomandmaryarefriends.______________________________________________________7、therearesomebooksinthebookcase.______________________________________________________9、i’mastudent.______________________________________________________11、yourfathercanrideabike.______________________________________________________13、theycanplayfootballafterschool.____________________________________________________________________________________________________________19、helikestheviolin.______________________________________________________20、havesomebread,tom.______________________________________________________一般疑问句通常疑问句在英语的学习中，一般疑问句的转换及回答是经常碰到的问题，现在我们就来探讨一下有关一般疑问句的问题。
小学英语专项复习 肯定句变否定句(无答案)
小学英语专项复习肯定句变否定句（无答案）一、如果谓语中有情态动词、助动词或be，直接在它们后面加not构成否定句。
I can not dance. 我不会跳舞。
He will not go there. 他不会那里。
I am not a teacher. 我不是教师。
注意：若谓语中不止一个助动词、情态动词或be时，在第一个后加not。
如：He has not been to Japan. 他没有去过日本。
二、如果谓语中没有情态动词、助动词或be，在动词之前加do not (一般现在时第三人称单数用does not,过去时用 did not，并将原来的谓语动词改为原形) 。
You don’t look well today. 你今天气色不好。
She does not know what to do. 她不知道做什么。
I didn’t do morning exercises today. 我今天没做早操。
注：have做助动词时，在后面加not；作“有”解时也可以在后面加not；不是作“有”解的为行为动词时，其否定式和其他行为动词一样要在前面加do(does、did) not。
如：I haven’t finished my homework. 我还没有做完作业。
I have not (=don’t have) a car. 我没有汽车。
I don’t have lunch at school. 我不是在学校吃中饭的。
She doesn’t have lunch at school. 她不是在学校吃中饭的。
练习：1. I am Maria’s friend. I _____ ______ Maria’s friend.2. He was reading a novel in the study.He ________ _________ a novel in the study.3. Steve was doing some cleaning at this time yesterday. Steve ______ doing ______ cleaning at this time yesterday.4. He minds it. He _______ ______ it.5. Be quick. ______ ______ quick.6. Michael can speak some French..Michael ______ speak ______ French.7. I used to walk to school before.I _________ ______ walk to school before.8. She is going to buy some food tomorrow.she ______ going to buy ______ food tomorrow?9. You’d better leave at once.You’d _______ ______ leave at once.10. Jim does sports every day.Jim _____ ______ sports every day.11. Sally could speak some French at the age of 5.Sally ________ speak _____ French at the age of 5.12. Stop writing。
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专题: 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.
将下列各句改成否定句
1、Tom’s brother is walking in the park.
______________________________________________________
3、The students of Class 5 are cleaning the classroom.
______________________________________________________
5、Tom and Mary are friends.
______________________________________________________
7、There are some books in the bookcase.
______________________________________________________
9、I’m a student.
______________________________________________________
11、Your father can ride a bike.
______________________________________________________
13、They can play football after school.
______________________________________________________
16、We come from China.
______________________________________________________
19、He likes the violin.
______________________________________________________
20、Have some bread, Tom.
______________________________________________________
一般疑问句
一般疑问句
在英语的学习中，一般疑问句的转换及回答是经常碰到的问题，现在我们就来探讨一下有关一般疑问句的问题。
一、什么是一般疑问句
用Yes或No作答的疑问句叫一般疑问句。
一般疑问句还有下列特点：1、以be动词、助动词或情态动词开头；例：Is your father a teacher? Does she like animals? Can Jenny speak Chinese?2、往往读升调；3、译成汉语，都可以带上“吗”，例如上面三句可分别译为：你父亲是老师吗？她喜欢动物吗？Jenny会说英语吗？
二、例何将陈述句变成一般疑问句？
要将陈述句变成一般疑问句，可以遵循下列步骤：
1.看句中有没有be动词（am、is、are、was、were）、和情态动词（can、must、will、may等），如果有，将其提到句首，句末打上问号即可。
例：She is a girl.
→Is she a girl?
Tom's father can play the piano.
→Can Tom's father play the piano?
练习：
1.This is a boy
2.It is a cat .
3.This is your sister.
4.Those are my books.
5.These are apples.
2.如果句中没有be动词、助动词或情态动词，则根据谓语动词的形式借助do 的相应形式放在句首。
具体方法是：如果谓语动词是原形或者主语是第一人称、第二人称、第三人称复数则借do；如果谓语动词是一般现在时第三人称单数形式，则借does；需要注意的是，借does后，原句的谓语动词要变回原形。
例：They go to school by bike.
→Do they go to school by bike?
Bill gets up at 6:30 every day.
→Does bill get up at 6:30 every day?
练习：
1.I love my parents.
2.I play computer games every night.
3.I have a TV.
三.陈述句变一般疑问句应注意的事项
陈述句变成一般疑问句除了遵循上述规则以外，还应注意下列几点：
1.如果陈述句中有第一人称，则变问句时最好要变为第二人称。
例：I usually have lunch at school.
→Do you usually have lunch at school?
My father is playing soccer.
→Is your father playing soccer?
2.如果陈述句中有some, 则变问句时往往要变成any 。
例：There is some water on the playground.
→Is there any water on the playground.
3．如果句中含有实义动词have且表示“有”时,除借do外，也可将其直接提到句首。
例：I have some friends in America.
→Have you any friends in America?/Do you have any friends in A merica? 综合练习：
1. His father is an English teacher.
2. These cats are crying.
3. They can swim.
4. I like to read English.
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