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.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。
9.They like reading books.They don’t like reading books.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。
10.We had lessons this morning.We didn’t have lessons this morning.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，时态是一般过去时，在主语后加didn’t。
11.I have a doll.I don’t have a doll.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。
12.It is a fish.It isn’t a fish.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。
13.They speak English.They don’t speak English.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。
14.She can clean the bedroom.She can’t clean the bedroom.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。
15.I have some money in my pocket.I don’t have any money in my pocket.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，some要改成any。
陈述句变否定句的练习题I．Be 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:I.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 sister is not a beatiful girl.4.My mother is a worker.My mother is not a worker.5.They are in the classroom.They are not in the classroo.6．There are some books on the bookshelf.There are not any books on thebookshelf.7. I was at home yesterday.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 looking 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 you wait fora bus.You should not line up when you waitfor a bus.16.We need learn something to cook.We need not learn anything to cook.17.I can write a book.I can not write a book.18.You should say “Sorry” to somebodywho you hurt him.You should not say “Sorry” tosomebody who you hurt him.19.He must stay at home to finish hishomework.He must not stay at home to finishhis homework.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.W e like the mask.We don’t like the mask.23.H e likes the violin.He doesn’t like the violin.24.H ave some bread, Tom.Do not have any bread, Tom.25.P lease open your books.Please do not open your books26.I like Chinese、Maths、Art and PE.I don’t like Chinese、Maths、Art andPE27.S he has a shower in the morning.She doesn’t have a shower in themorning.28.P eter did lots of work in thecompany last night.She didn’t do a lot of work in thecompany last night.29.T hey 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.。