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一、陈述句变一般疑问句的口诀：一般疑问句，变换并不难。
要先看动词，情况分两种：见了be（am，is，are）和can，还有would和will，快快提上前。
不见be（am，is，are）和can，would和will，借助do，does，did；动词原形借助do；单三形式借does，动词还原成原形；过去式借did，动词还原成原形;第一人称变第二，切记句号变问号。
二、肯定句变否定句的口诀：肯定变否定，其实也不难。
先找be和can，还有would 和will，其后加not。
不见be和can，would和will主语后把don’t，doesn’t，didn’t加，动词原形加don’t，单三形式加doesn’t，动词还原成原形；过去式把didn’t加，动词还原成原形，其余不变照样抄。
三、将下列各句改为一般疑问句（Is,Are,Can,Do,Does,Did,Would) 和否定句（isn’t，aren’t，don’t，doesn’t，didn’t，wouldn’t，）1、Danny watches TV every evening.2、I do my homework every day.3. Let’s tell hi m about your family.（变否定句）4.Amy played computer games yesterday.4.We go to school every morning .5.He speaks English very well .6.I like taking pictures in the park.7.Jenny had fun in Canada。
8.She is a a good student。
9.Simon and Tom are skating。
1.Danny can fly a kite.2.There are some toys in the box.3.I can speak English.4.I would like a cup of tea.5.I walk to school every day.6.It has a picture on it.7..Danny likes cakes very much.8.They saw the film yesterday.9.We went on a trip to Beijing10.She is reading a book now.11.She was happy yesterday.12.Look at a map ，please.（变否定句）13.He wants to be strong.14．Nancy is going to climb the hill.15．He played basketball yesterday .16．Please put the clothes here .（变否定句)17．We need some ping-pong balls.18．I think I need to eat more vegetables!19．We will go on a trip to the ocean.20．.He thinks I am a good player.四、、对划线部分提问。
陈述句变一般疑问句和否定句一般疑问句=助动词+陈述句剩余部分否定句＝找出助动词，在助动词后加not一、助动词：帮助动词构成时态、语态、感情色彩和否定疑问句。
它包括be动词, do的各种形态，have的各种形态，will等情态动词。
I am watching TV. am 在句子里不能独立做谓语，也没有具体的含义。
二、有的助动词既可以做助动词又可以做行为动词：be动词可以做行为动词,也可以做助动词。
行为动词是有实际意思，表示具体的动作，在句子里能够独立充当句子成分。
助动词是不具有实际意思，在句子里不能独立充当句子成分，只是帮助动词构成各种时态和语态三、学会通过助动词来判断谓语动词，来帮助读懂句子。
1、四类助动词，只有do是包含在谓语动词里的，其它的三个都是在谓语动词前面的。
2、很多助动词既可以做助动词又可以做实意动词。
当做助动词的时候，后面跟动词。
当做行为动词的时候，后面跟名词。
五、作业(一)用所给的词组成句子1、beautiful , a , she, pen, have1、he, rice, has , for , lunch.2、chicken, they , have, for ,rice, and ,lunch, tomatoes.3、school, after, Mary, goes, breakfast, to .4、in, a ,something, price, we, good , have.5、let, us, play, basketball6、believe, can’t, my, eyes, I7、are, goods, in, there, the, lots, shop, of8、how, T-shirt, how, is , your ?9、much, nice, are, these, how, socks?10、thirty-two, the ,are, dollars, books.11、good, the, many, a, colorful, coats, at, sells, price, shop.12、to, sister, loves, buy, my, Huaxing’s , on, T-shirts, sale.13、buys, Cindy, her, shop, some, from, flowers, this, mother.14、your, is, party, father’s, birthday, when?15、birthday, May, on, party, is, the, Jane’s, first.16、is, September, Nick’s, birth, Twenty-first, of, date.17、our, Kate, oldest, in ,is, class, the.18、your, how, old, is , brother?19、I, very, comedies, much, love.20、to, does, movies, want, see, she, a?21、my, Jack, actor, is, favorite.22、Beijing , I, Opera, I, movies, like, and, too, like .23、movies, do, what, you, kind, like, of?24、need, you, do, bags, sports, for25、much, game, how, is, the, computer.26、are, color, shoes, what, those27、his, have, sister, does, red, a, T-shirt28、likes, shoes, he, black, those（二）改写句子，变成一般疑问句和否定句。
一、肯定句改否定句的方法--------- 步法1、在be动词后加not。
如： is not , are not , am not, was not, were not；2、在 can, should, will 等后力口 not。
如：cannot, should not, will not；3、上述都没有的，在动词前加助动词否定形式don' t/doesn' t/didn' t。
4、some 改成any。
(1)把下面的句子变成否定句。
She is watching TVnow. ________________________________________________________________________________________________We go to school onSunday. _____________________________________________________________________________________________His father workshard. ________________________________________________________________________________________________Jack s mother is anurse. _______________________________________________________________________________________________The cat runsfast. _________________________________________________________________________________________________They like reading books.My grandpa gives me a hotdog. ________________________________________________________________________________________________Tom often walks toschool. _____________________________________________________________________________________________I have adoll. ________________________________________________________________________________________________It is eatingfish. ________________________________________________________________________________________________二、肯定句改一般疑问句的方法一一三步法1、把be动词放在句首，剩下的照抄，（some改成any, my改成your等）句点改成问号。
英语陈述句变一般疑问句口诀（5篇）第一篇：英语陈述句变一般疑问句口诀英语陈述句变一般疑问句口诀：一般疑问句，变换并不难。
先要看动词，情况分两种。
①见了be和can，快快提上前。
be动词是否变is/ am/ are由后面的来决定。
can的变化最简单，所有人称都用can。
②动词为实义，do和does上前线。
三单人称用does,动词一定要还原。
其他人称都用do。
第一人称变第二。
句首字母要大写，切记句号变问号！单三人称用does,动词一定要还原。
其他人称都用do。
第一人称变第二。
句首字母要大写，切记句号变问号！英语陈述句变一般疑问句口诀：一般疑问句，变换并不难。
先要看动词，情况分两种。
①见了be和can，快快提上前。
be动词是否变is/ am/ are由后面的来决定。
can的变化最简单，所有人称都用can。
②动词为实义，do和does上前线。
单三人称用does,动词一定要还原。
其他人称都用do。
第一人称变第二。
句首字母要大写，切记句号变问号！英语陈述句变一般疑问句口诀：一般疑问句，变换并不难。
先要看动词，情况分两种。
①见了be和can，快快提上前。
be动词是否变is/ am/ are由后面的来决定。
can的变化最简单，所有人称都用can。
②动词为实义，do和does上前线。
单三人称用does,动词一定要还原。
其他人称都用do。
第一人称变第二。
句首字母要大写，切记句号变问号！英语陈述句变一般疑问句口诀：一般疑问句，变换并不难。
先要看动词，情况分两种。
①见了be和can，快快提上前。
be动词是否变is/ am/ are由后面的来决定。
can的变化最简单，所有人称都用can。
②动词为实义，do和does上前线。
第二篇：陈述句变一般疑问句解题方法陈述句变一般疑问句解题方法（自创儿歌）鱼的英语备课室 2008-11-14 22:18:10 阅读284 评论2 字号：大中小订阅陈述句变一般疑问句解题方法儿歌：陈述变疑问，方法很简单。
![英语所有句型转换的方法[陈述句变否定句_一般疑问句特殊疑问句与练习]](https://uimg.taocdn.com/9585abe7be23482fb5da4c1f.webp)
英语所有句型转换的方法基本助动词只有三个：be, do, have,他们没有词汇意义，只有语法作用，如协助构成进行体，完成体，被动态，否定句，疑问句等。
一、肯定句改否定句的方法 -- 一步法1、在be动词后力口not。
如：is not ，are not ，am not，was not，were not ；2、在can,等后加not。
如：cannot3、上述都没有的，在动词前加助动词否定形式do not, does not.（don' t/doesn ' t）4、some 改成any。
二、肯定句改一般疑问句的方法——三步法1、把be动词放在句首，剩下的照抄，（some改成any，my改成your 等）句点改成问号。
2、把can，等放到句首，剩下的照抄，（some改成any，my改成your等）句点改成问号。
例如：陈述句:They are in the park. He can play theguitar..一般疑问句：Are they in the park? Can he play theguitar?把下列句子变成一般疑问句1. I am liste ning to music.2. Mike is a stude nt.3. Sarah can clea n the classroom.4. They are in the zoo.5. There are some flowers in the vase.6. This is my sister.7. We are sweep ing the floor.3、上述都没有的，在句首请助动词Do/Does帮忙，剩下的照抄，（some 改成any, my改成your等）句点改成问号。
例如：陈述句:I like the ducks. He likes the dogs.一般疑问句：Do you like the ducks? Does he like the dogs?把下列句子改为一般疑问句。
英语所有句型转换的方法基本助动词只有三个：be, do, have, 他们没有词汇意义，只有语法作用，如协助构成进行体，完成体，被动态，否定句，疑问句等。
一、肯定句改否定句的方法——一步法1、在be动词后加not。
如：is not ，are not ，am not，was not，were not；2、在can，等后加not。
如：cannot3、上述都没有的，在动词前加助动词否定形式do not, does not. (don’t/doesn’t)4、some 改成any。
二、肯定句改一般疑问句的方法——三步法1、把be动词放在句首，剩下的照抄，（some 改成any，my改成your等）句点改成问号。
2、把can，等放到句首，剩下的照抄，（some 改成any，my改成your等）句点改成问号。
例如：陈述句: They are in the park. He can play the guitar.. 一般疑问句: Are they in the park? Can he play the guitar?把下列句子变成一般疑问句1. I am listening to music._______________________________________2. Mike is a student._______________________________________3. Sarah can clean the classroom.________________________________________4. They are in the zoo.________________________________________5. There are some flowers in the vase.________________________________________6.This is my sister._________________________________________7.We are sweeping the floor.__________________________________________3、上述都没有的，在句首请助动词Do/Does帮忙，剩下的照抄，（some 改成any，my改成your等）句点改成问号。
句型转换小技巧一、陈述句变一般疑问句口诀：（找、调、变、抄、改）1. 找：找be 动词（am, is, are) ；找情态动词（can...)2. 调：把找到的词调到开头并大写。
3. 变：一二人称互变。
I 变you, you 变I, my 变your, your变my...4. 抄：将句子剩余部分抄下来5. 改：检查句子大小写，句号改成问号。
二、一般疑问句回答诀窍：怎么问，怎么答。
肯定回答是Yes, 主语（代词）+be/情态动词.否定回答是No, 主语（代词）+ be/情态动词+not.如：(1) A: Is he/she/it...?B: Yes, he/she/it is. No, he/she/it isn’t.(2) A: Are they...?B: Yes, they are. No, they aren’t.(3) A: Are you...?B: Yes, I am. No, I’m not. / Yes, we are. No, we aren’t.(4) A: Can he...?B:Yes, he can. No, he can’t.(5) A:Is Yang Ling...?B: Yes, she is. No, she isn’t.(6) A:Is this/that...?B: Yes, it is. No, it isn’t.(7) A: Are these/those...?B: Yes, they are. No, they aren’t.(在回答时必须将this\that与these\those分别变为it和they。
)三、改否定句（1）找：找到be动词或者情态动词（2）添：在be 动词或者情态动词后面添not.（3）抄：其余照抄，一字不漏。
四：对划线部分提问（1）看划线部分是什么（2）确定特殊疑问词，写在开头（3）遮住划线部分，剩余部分改为一般疑问句（4）句号改为问号特殊疑问词：单词意思用法when什么时间问时间who谁问人where在哪里问地点what time什么时间问时间what colour什么颜色问颜色what about…怎么样问意见how…怎么样问情况how old多大问年龄how many多少问可数名词数量how much多少问价钱或不可数名词数量how about…怎么样问意见。
否定句变换口诀欧阳引擎（2021.01.01）2. She is buying some food in the supermarket（改为否定句）3. He can play the piano.（改为否定句）一般疑问句变换口诀1. This is my toy car.（改为一般疑问句）2. He can play basketball.（改为一般疑问句）3. Jack speaks English very well. （改为一般疑问句）对划线部分部提问口决1. The children are flying kites in the park. （对画线部分提问）2. There are ten books in the bag.（对画线部分提问）3. She is a nurse. （对画线部分提问）一、按要求完成句子（要求：A：改为一般疑问句 B：改为否定句）1. I am a student.→A: B:2. They are English cars. →A: B:3. This is a pencil-box. →A: B:4. Its name is Polly. →A: B:5. Jim is at school. →A: B:6. These are my English books. →A: B:7. I know his name. →A: B:8. Please look after your cat. →A: B:9. There is some money in the purse. →A: B:10. There are many apples on the tree. →A: B:11. You can go to have a look. →A: B:12. Come here, please. →A: B:二、回答句子（A：肯定回答 B：否定回答）1. Are you a teacher? →A: B:2. Is this your ruler? →A: B:3. Are those banana trees? →A: B:4. Is it a nice room? →A: B:5. Is there a picture on the wall? →A: B:6. Are there any trees on the hill? →A: B:7. Can you see a bird in the sky? →A: B:8. Do you know Mr Wang? →A: B:陈述句变一般疑问句1. His father is an English teacher._________________________________________ ?2. These cats are crying.（喊叫）_________________________________________ ?3. They can swim._________________________________________ ?4. I like to read（阅读） English._________________________________________ ?5. I go to school on foot.（走路）_________________________________________ ?6. He likes English._________________________________________ ?7. His father goes to work by bus.（乘公共汽车）_________________________________________ ?8. He is crying（哭） under the tree._________________________________________ ?9. The boy does some housework（家庭作业） at home. _________________________________________ ? 10. The children had a good time in the park（公园）. _________________________________________ ?。
初一英语句型转换陈述句变一般疑问句和否定句1 I can help you. 2 Tom’s T-shirt is five dollars. 3 I often watch TV on Sunday. 一、陈述句变一般疑问句的方法：1．对于助动词、情态动词、be动词作谓语的，动词作谓语的，把把be动词，can，shall， will, may等放在句。
如：首，（some 改成any，my改成your等），句点改成问号。
如：He's a teacher. →Is he a teacher? He c an swim. →Can he swim? He'd like to go there. →Would he like to go there? 2、含有have的一般疑问句,have译为“有”。
一般疑问句式有两种形式: 1.把have/has调到句首。
例如: 陈述句:Tommy has a computer. 一般疑问句:Has Tommy/he a computer? 2.加助动词do/does,第三人称单数用does,其他人称用do，过去式用did。
其句型例如上句可变为: 主语 + have...?例如上句可变为为:Do/Does + 主语Does Tommy have a computer? 3．对于实意动词作谓语的，动词原型借助do，三人称单数借助does，过去式借助did，加在句首，再把谓语改为动词原形，（some 改成any，my改成your等），句点改成问号。
其句型为:Do/Does/did + 主语 + 动词原形+其它如：如：I like him. →Do you like him? He likes me. →Does he like me? I liked him. →Did I like him? 注意：在把肯定句改成否定句或一般疑问句的时候,要注意句中是否有already、some、something、somebody等词，如果有也必须进行改变，already要改成yet，some、something、somebody等分别改成any、anything、anybody等。
陈述句变否定句和一般疑问句口诀和练习否定句变换口诀1. 变否定，找be、 can ， be、can后边加not，2. 无be无can找动词，动词前边加don't/doesn’t，后面动词用原形。
【典型例题】1. David watches TV every evening.（改为否定句）2. She is buying some food in the supermarket（改为否定句）3. He can play the piano.（改为否定句）一般疑问句变换口诀1. 一般问，找be、 can ， be、 can提前用问号；2. 无be无can借用do（三单does）, 放到句首要大写。
【典型例题】1. This is my toy car.（改为一般疑问句）2. He can play basketball.（改为一般疑问句）3. Jack speaks English very well. （改为一般疑问句）对划线部分部提问口决划线问，先把原句变疑问，找准特殊疑问词，放在句首去划线，动词词组do 代替，时态人称要注意。
【典型例题】1. The children are flying kites in the park. （对画线部分提问）2. There are ten books in the bag.（对画线部分提问）3. She is a nurse. （对画线部分提问）一、按要求完成句子（要求：A：改为一般疑问句B：改为否定句）1. I am a student.→A: B:2. They are English cars. →A: B:3. This is a pencil-box. →A: B:4. Its name is Polly. →A: B:5. Jim is at school. →A: B:6. These are my English books. →A: B:7. I know his name. →A: B:8. Please look after your cat. →A: B:9. There is some money in the purse. →A: B:10. There are many apples on the tree. →A: B:11. You can go to have a look. →A: B:12. Come here, please. →A: B:二、回答句子（A：肯定回答 B：否定回答）1. Are you a teacher? →A: B:2. Is this your ruler? →A: B:3. Are those banana trees? →A: B:4. Is it a nice room? →A: B:5. Is there a picture on the wall? →A: B:6. Are there any trees on the hill? →A: B:7. Can you see a bird in the sky? →A: B:8. Do you know Mr Wang? →A: B:陈述句变一般疑问句1. His father is an English teacher._________________________________________ ?2. These cats are crying.（喊叫）_________________________________________ ?3. They can swim._________________________________________ ?4. I like to read（阅读） English._________________________________________ ?5. I go to school on foot.（走路）_________________________________________ ?6. He likes English._________________________________________ ?7. His father goes to work by bus.（乘公共汽车）_________________________________________ ?8. He is crying（哭） under the tree._________________________________________ ?9. The boy does some housework（家庭作业） at home. _________________________________________ ?10. The children had a good time in the park（公园）. _________________________________________ ?。
英语陈述句变一般疑问句口诀陈述要变疑问句，情态动词为老大；情态动词放句首，第一人称变第二；如有some变any，其它不变句号变。
解析：陈述句要变一般疑问句，首先要看句中有没有情态动词，如果有情态动词，就把情态动词直接放在句首。
如果是第一人称，则要变成第二人称，句中有some，则要变成any。
其它部分一成不变地写下来，最后把句号变成问号就可以了。
例句1：He can speak English.(他会说英语。
)解析1：因为句中有情态动词can，所以按照口诀一，其变成一般疑问句为：Can he speak English? (他会说英语吗？)例句2：Mike should give her a hand. (迈克应该帮她一个忙。
)解析2：因为句中有情态动词should，所以按照口诀一，其变成一般疑问句为：Should Mike give her a hand?(迈克应该帮她一个忙吗？) 例句3：I may do whatever I like.(我可以做我所喜欢的任何事。
)解析3：因为句中有情态动词may，而且主语是第一人称I，所以按照口诀一，其变成一般疑问句为：May you do whatever you like?(你可以做你所喜欢的任何事吗？)例句4：There could be some fruit in the box.(盒子里可能有一些水果。
)解析4：因为句中有情态动词could，而且还有some，所以按照口诀一，其变成一般疑问句为：Could there be any fruit in the box?(盒子里可能有水果吗？)口诀第二句：句中情态未曾见，再看句中有无be；有be直接放句首，二三人称不用变；第一人称变作二，be中am变成are；was还要变were，其余不变句号变。
解析：如果陈述句中没有情态动词，然后就要看句中有没有be动词的对应形式。
当有be动词的对应形式(am, is, are, was, were)，句中人称是第二、三人称时，直接把相应的be动词放句首。
一、陈述句：用于陈述事实和观点。
包括肯定结构和否定结构，句末用句号。
二、肯定句→否定句：1.主语+系动词be + 表语。
在be（am\is\are\was\were）后加not；如：The dog is playing in the room. → The dog is not playing in the room.2. 主语+ 情态动词+ 动词原形+ 其他。
在情态动词（can ,should，must ，would）后面加not；如：He can dance.→H e can not dance.3.主语+实义动词+其他。
要借助助动词do , does, did;①句中动词为原形的，加don’t .如： I like apples. →I don’t like apples.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。
如：He likes apples.→ He doesn’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,如:I went to school yesterday .→I didn’t go to school yesterday .注：肯定句中的some、something、somebody等在否定句中分别改成any、anything、anybody等，already要改成yet，too改成either, both改成neither, all改成none等。
如：There are some students in the classroom.→There are not any students in the classroom.三、肯定句→一般疑问句——三步法●一般疑问句：只能用yes（是）或no（否）来回答的疑问句。
一般结构：系动词be/情态动词/助动词+主语+其他成分通常回答：肯定：Yes，主语+提问的系动词be/助动词/情态动词.否定：No，主语+提问的系动词be/助动词/情态动词的否定形式.如：① Is she from America? 她来自美国吗？-Yes, she is. / No, she isn't. 是的，她是。
英语所有句型转换的方法(陈述句变否定句-一般疑问句特殊疑问句及练习)英语所有句型转换的方法基本助动词只有三个：be, do, have, 他们没有词汇意义，只有语法作用，如协助构成进行体，完成体，被动态，否定句，疑问句等。
一、肯定句改否定句的方法——一步法1、在be动词后加not。
如：is not ，are not ，am not，was not，were not；2、在can，等后加not。
如：cannot3、上述都没有的，在动词前加助动词否定形式do not, does not. (don’t/doesn’t)4、some 改成any。
二、肯定句改一般疑问句的方法——三步法1、把be动词放在句首，剩下的照抄，（some 改成any，my改成your等）句点改成问号。
2、把can，等放到句首，剩下的照抄，（some 改成any，my改成your等）句点改成问号。
例如：陈述句: They are in the park. He can play the guitar..一般疑问句: Are they in the park? Can he play the guitar?把下列句子变成一般疑问句1. I am listening to music._____________________________________ __2. Mike is a student._____________________________________ __3. Sarah can clean the classroom._____________________________________ ___4. They are in the zoo._____________________________________ ___5. There are some flowers in the vase._____________________________________ ___6.This is my sister._____________________________________ ____7.We are sweeping the floor.__________________________________________3、上述都没有的，在句首请助动词Do/Does帮忙，剩下的照抄，（some 改成any，my改成your等）句点改成问号。
句型转换的方法一、肯定句改否定句的方法1.She is watching TV now.2.We go to school on Sunday.3.His father works hard.4.Jack's mother is a nurse.5.The cat runs fast.6.They like reading books.7.My grandpa gives me a hot dog.8.Tom often walks to school.9.I have a bag.10.It is eating fish.二、肯定句改一般疑问句1. I am listening to music.2. Mike is a student.3. Sarah can clean the classroom.4. They are in the zoo.5. There are some flowers in the vase.6. We need some masks.7.We are sweeping the floor.8. They like making the puppet.9. Su Hai and Su Yang live in a new house.10.I put a book on my head.11. They sing “In the classroom”together.12.We play basketball on Sundays.13. Tom likes listening to music三、肯定句改特殊疑问句填特殊疑问词1、A: _______ is the boy in blue? B:He’s Mike.2、A: _______ pen is it? B:It’s mine.3、A: _______ is the diary? B:It’s under the chair.4、A: ___ is the Chirstmas Day? B: It’s on the 25th of December.5、A: _______ are the earphones? B:They are 25 yuan.6、A: _______ is the cup? B:It’s blue.7、A: _______ is it today? B:It’s Sunday.8、A: _______ was it yesterday? B: It was the 13th of October.9、A: _______ this red one? B:It’s beautiful.10A:_______ is your cousin? B: He’s 15 years old.11、A:_______ do you have dinner? B: At 6 o’clock.句型转换题1. They are looking for bags .(对画线部分提问）2. I am riding my bike now.(同上）3. There are twelve students in my class.(同上）4. I can speak English.(改为一般疑问句）5. I will make model planes with my classmates on Sunday. (对画线提问）6. The waiter and the waitress play table tennis every day.( 改为否定)7. It's ten o'clock.(对画线部分提问）8.He does well in Maths. (改为否定句)9.Mike runs as fast as Ben. （改为一般疑问句）10.Jim is good at English and Maths. （对画线部分提问）11.Turn right at the third crossing. （改为否定句）12.Are they American cars? （改为单数）13.Don’t go along this street. （改为肯定句）14.I get to the shopping centre by bus. （对画线部分提问）15.Su Yang is asking Ben some questions. （对画线部分提问）16.Please turn off the light. （改为否定句）17.I know his telephone number. （改为一般疑问句）18.The children have school today. （改为否定句）19.I’d like to join them.（改为一般疑问句）20.They are going to see a film tomorrow. （对画线部分提问）21.I like collecting stamps and singing. （改为否定句）22.He often cleans his bedroom. （改为一般疑问句）23.Liu Tao is watering flowers in the garden. （对画线部分提问）24.David and Mike are going to planting trees this afternoon. （对画线部分提问）25.He did his homework in the classroom. （改为否定句）26.Tom jumps as far as Mike. （改为否定句）27.Liu Tao needs some pencils. （改为否定句）28.He has a brother. （改为一般疑问句）29.Nancy drew some pictures yesterday. （改为否定句）30.Liu Tao usually reads newspaper. （改为过去时）。
