英语肯定句变否定句练习
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don’t或doesn’t ；
①句中动词为原形的，加don’t .如：I like apples. →I do n’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 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 yesterday .
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 br other is walking in the park.
______________________________________________________
2、There are some books in the bookcase.
______________________________________________________
3、The students of Class 5 are cleaning the classroom.
______________________________________________________ 4、I’m a student.5、Stop and wait at a red light.
____________________ _____________________________ 6、Your father can ride a bike.
______________________________________________________ 7、They can play football after school.
______________________________________________________ 8、We come from China.
______________________________________________________ 9、 Touch the door.
______________________________________________________
将下列否定句变肯定句
1、Don’t go at a red light.
2、Don’t run on the ferry.
______________________ _________________________ 3、I don’t go to school.4、The ferry doesn’t work.
______________________ _________________________ 5、Don’t turn left on the road.
______________________________________________________
英语 否定句
否定 否定字的表现 Not 1.My boss did not tell me to wear jeans. My boss told me not to wear jeans. 本动词否定>助动词+not+VR 不定词否定>not to VR 2.Dave is an Australian, not a Austrian. 3.I met him on the street, not at the office. 4.She loves him not because he is handsome, but because he is warmhearted. No not a/an=no not any=no 1.I have no one to count on. I don’t have anyone to count on. 2.No students are allowed to enter the room. Nobody is allowed to enter the room. No+单数n,复数n,不可数n No后面的动词形式看no后的主词 Nobody=no one ,one是单数故用is 3.He is no genius. 他绝非天才 I’m no thief. 我绝不是小偷 Never [be之后,助动词之后VR之前], 1.It never snows in the Sahara desert. desert1 ['dez?t] n.沙漠 a.荒无人烟的 desert2 [di'z?:t] v.遗弃 一个词有两个发音音重的是动词 dessert n.点心 2.You should never walk alone at night. It’s raining cats and dogs outside. Hardly, scarcely ['skε?sli], rarely ['rε?li], seldom [be之后,助动词 之后VR之前] 1.His success is hardly possible. 他的成功几乎是不可能的 2.The injured child could scarcely walk.
肯定句及祈使句变否定句
中考句型转换错误分析肯定句变否定句 1. I think she is there. 误：I think she isn’t there. 正：I don’t think she is there. 析：英语中think, believe, expect, suppose等表示信念和揣测的动词，后接that从句时，习惯上将从句中的否定形式转移到主句上，即否定主句谓语，不否定从句谓语。 2. He can sing this song and that one. 误：He cannot sing this song and that one. 正；He cannot sing this song or that one. 析：肯定句中的连词and在否定句中一般要改为or。 3. Tom went to school too. 误：Tom didn’t go to school too. 正：Tom didn’t go to school either. 析：too和also用于肯定句中时，否定句中用either替换。 4. He has had supper already. 误：He hasn’t had supper already. 正：He hasn’t had supper yet. 析：随着对谓语动词的否定，某些副词也要作相应的变动。 5. He had a good rest just now. 误：He hadn’t a good rest just now. 正：He didn’t have a good rest just now. 析：have在表示开会、吃饭、休息、进行体育锻炼等词组中是行为动词，否定句用助动词来完成。 6. Let’s do it.
小学英语 改否定句
主题： Sentences 句法--否定句 II. How to use用法：肯定句变否定句 第一类：含有is, am, are的句子，直接在is, am, are后面加not, 主语+ be （am is are）+ not （I am not= I’m not is not=isn’t are not=aren’t） 例如：I am Jack. ---- I am not Jack.—I’m not Jack. She is a doctor. ---- She is not a doctor. It is a sunny day. ---- It is not a sunny day. 第二类：含can 的情态动词的句子, 在can 后面直接加not，can not= can’t。 例如：The bird can fly. ---The bird can not fly. I can dance ____ I can not dance 第三类：含实意动词的句子变否定句，在do 或does 后面加not 主语+ do （does）not + 动词原形 例如：I get up at 7:00 every morning. ---- I don’t get up at 7:00 every morning. Grandma often goes to the park in the morning. ---- Grandma doesn’t often go to the park in the morning.
2. 完成作业单上语法练习。 课堂练习一：将下列句子变成否定句。 1.I am Lily. ____________________________________ 2.It’s a cat. ____________________________________ 3. You are here.___________________________________ 4.You are a nurse. _________________________________ 5. She is happy. ____________________________________ 6. It’s her bird. ____________________________________ 7. This is your cap. __________________________________ 8.That’s his cap. ___________________________________ 9. My name is Tom. _________________________ 10. I am a teacher _____________________ 课堂练习二：将下列句子变成否定句。 1. I can play the piano. ____________________________________ 2. She can walk to school. ____________________________________ 3. Jenny can sing ._______________________________ 4. Jack can play football. ____________________________________ 5. The bird can fly . __________________________ 6.Grandpa can run very fast. ___________________________________ 7 .My sister can swim. _________________________
英语肯定句变否定句练习(优.选)
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. ______________________________________________________
英语肯定句变否定句的基本方法
肯定句变否定句的基本方法 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。 1.在含系动词be、助动词be, have, has, will, would, shall, should等之后直接加not，构成否定句。如： He is there. — He is not there. 他不在那儿。 I have finished my work. — I have not finished my work. 我的工作还没完成。 She will agree with you. — She will not agree with you. 她不会同意你的意见。 He will not go there. 他不会那里。 I am not a teacher. 我不是教师。 2.否定含情态动词的句子： a.在情态动词can, could, may, might, must, need, dare, had better, would rather的句子之后直接加not。如： (1) He can say so. — He can not say so. 它不会那样说。 (2) Students must smoke. — Students must not smoke. 学生不允许抽烟。 (3)You’d better go there now.—You’d better not go there now. 现在你最好不要去那里。 (4)I’d rather tell you the truth.—I’d rather not tell you the truth. 我倒想不告诉你真相。 (5) He dared ask his parents for money again. — He dared not ask his parents for money again. 他不敢向父母亲要钱。 I can not dance. 我不会跳舞。 b.在含情态动词ought to的句子，在ought to中的to前面加not，构成否定句。如： (1) You ought to bother him. — You ought not to bother him. 你不应该去麻烦他。 (2) You ought to waste your time. — You ought not to waste your time. 你不应该把时间浪费了。 c.在含情态动词used to的句子，可在used to中的to前面加not；也可在used前面加did not，同时将used 改为use。如： (1) He used to smoke in the past . — He used not to smoke in the past. 他过去不常抽烟。 (2) He used to live here. — He did not use to live here. 他原来常不住这里。 d.在含情态动词have / has / had to的句子，在have / has / had to前面加do not的适当形式, 同时将has / had 改为have。如： (1) You do have to stay here after school. — You do not have to stay here after school. 你不必放学后还呆在这里。 (2) He had to go to work yesterday. — He did not have to go to work yesterday. 他昨天不必去上班。 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) 。 (1) He likes classic music. — He does not like classic music. 他不喜欢古典音乐。 (2) She played table tennis yesterday afternoon. — She did not play table tennis yesterday afternoon. 她昨天下午没有打乒乓球。 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。
英语的否定句
英语的否定句和英语的肯定句几乎同样普遍。与其它语言一样，英语的肯定结构较易理解，但否定结构较为复杂。对中国的英语学习者来说，有时对否定句的理解和翻译会因为搞不清楚否定的对象而弄出错误，有些否定简直成了一种陷阱，令人稍不留神就陷入其中。下面就 把一些容易搞错的否定句罗列出来，提请英语学习者的注意和重视。 一、转移否定。转移否定结构往往貌似一般否定结构（not的位置与一般否定结构中的not 完全相同），实际上却是一种部分否定结构或是not由一部分转移到另一部分。这样的例子很多。 1．all．．．not All these nations are not neutral． 误译：所有这些国家都不是中立的。 正译：这些国家并非个个都是中立的。 这句话中，not否定的不是neutral，而是all。这是一种部分否定。 更多的例子：All that glitters is not gold．发光的不一定就是金子。 Opportunities come to all，but all are not ready for them when they come． 机会人人都有，但当机会到来的时候，并不是人人都做好了准备。 2．every．．．not Everything is not a joke． 误译：每件事都不是儿戏。 正译：并非每件事都是儿戏。 这句话中，not否定的不是joke，而是everything。 更多的例子：Everybody cannot do it．并非人人都能干得了这件事。 3．both．．．not But you see，we both cannot go．
英语肯定句改否定句的方法
肯定句改否定句的发： 1．看句子中有没有系动词或情态动词，如果有，就直接在系动词或情态动词后加not。例如：They were busy yesterday.(他们昨天很忙)，句子中有系动词were，改为否定句时就直接在系动词were 后加not，改为They were not busy yesterday.（他们昨天不忙）。再例如You should stand here(你应该站在这儿)，改为否定句，在情态动词should后加not，改为You should not stand here.(你不应该站在这儿) 2.句子中如果没有系动词或情态动词，就在实意动词前（主语后）don′t或doesn′t 或didn′t（根据实意动词的形态确定），实意动词必须变回原形。 例如：The children feel happy.(孩子们感到快乐)，动词是原形形式的feel,所以在动词前加don′t，改为否定句：The children don′t feel happy.（孩子们感到不快乐） 再例如：She takes up the phone(她拿起电话)，动词是单三形式的takes,所以在动词前加doesn′t，同时必须把句子中的takes变回原形take，改为否定句：She doesn′t take up the phone(她没拿起电话) 再例如：He told me a story(他给我讲了一个故事)，动词是过去式形式的told,所以在动词前加didn′t，同时必须把句子中的told变回原形tell，改为否定句：He didn′t tell me a story(他没有给我故事)
英语否定句大全教程
英语否定句综合教程 一、转换否定 引用薄冰的原话,是“在英语中常可见到一些……形式上否定而意义上则表肯定的句子”。 1.cannot…too You cannot be too careful. 误译:你不能太小心。 正译:你越小心越好。 英语说的cannot…too,意为“就算再……也不过分”或“越……越好”,其中的can表示可能性,too有over之意,可以换用enough或sufficient等字样。同时,在not的位置换用其他的否定词,如hardly,scarcely等也是可以的。因此下面5句话的意思同上面这句话的意思是完全一样的。 You cannot be over careful. You cannot be careful enough. You cannot be sufficiently careful. You cannot take enough care. You cannot take sufficient care. 2.It is a good horse that never stumbles. 误译:从不失蹄的马才是好马。 正译:再好的马也有失蹄的时候。 这个句子属于“It be adjective noun that…”句型。该句型多出现在一些谚语中, 在某些情况下,这种句型需要从反面解释。 更多的例子:It is a long lane that has no turning.再长的胡同也有拐弯。（意思是:凡事总有变化,不会永远不变。） 3.He must be a fool if he does not know what I mean. 误译:如果他不懂我的意思,他肯定是个傻瓜。 正译:他就是再傻也会懂得我的意思。 4.She study no harder than me. 误译:她学习不如我努力。 正译:她和我学习都不努力。 在一些no（not） adj.比较级的句子里,意思是肯定的。 更多的例子:I couldn?t agree with you more .我非常同意你的观点。 5.I never got no sleep in those days. 误译:那些日子我从来没有不睡觉。 正译:那些日子我怎么也睡不着。 英语和汉语一样,本来两个否定会成为一个肯定,但有时为了强调否定的语气,在通俗的口语中会有双重否定仍表否定的情况。 更多的例子:“I don’t know nothing about what’s waiting for me,”said Thrash.施腊希说:“我不知道我未来的命运如何。” 二、否定句并非都表示否定 （一）含有否定词not,no,nothing,never等或表示部分否定的词hardly,barely等的句子被称为否定句。英语的否定句表现形式多种多样,应用十分广泛,但形式上的否定并不等于意义上的否定,在很多情况下,形式上的否定句表达的却是肯定的含义,需注意这类句子的理解和译法。 1.not…until till直到……才,只有……才 People do not know the importance of friends until they lose them. 人们直到失去了才知道朋友的重要。 You can not learn anything till you get rid of your complacency. 只有去掉自满,你才能真正学点东西。 It was not until midnight that we went to bed. 直到半夜,我们才去睡觉。 2.not…long before 很快就,不久就 It wasn?t long before the conqured the country. 不久他们就征服了这个国家。 It won?t be long before we finish the work.我们很快就会干完这活儿。 It will not be long before they finish the work.他们很快就会干完活儿。 （二）否定表肯定 Cannot can never 和too, too much, enough, over 搭配表示“无论怎样……也不会过分,越……越好” This can?t be stressed too strongly.这一点怎么强调也不过分”。 While you are doing your homework, you can?t be careful enough. 你做作业的时候,越小心越好。 The development of society has made it necessary for us to have a good knowledge of Enghish, so we can?t over emphasize the importance of learning English. 1.某些疑问句、感叹句或否定祈使句的表达与回答 例如：---You haven?t been to Quanzhou, have you? ---No, I haven?t. 是的，我没有去过。 比较：---Yes, I have. 不，我有去过。 又如：---Lovely day today, isn?t it? ---Yes, isn?t it? (降调) 是啊，真好。 Isn?t that beautiful! (感叹) 多么美丽呀! 再如：Won?t you have some beer? =Why not have some beer? （邀请）请喝点啤酒吧！ ---Take care and don?t eat any more fish. ---I won?t. 好的，我不会再吃的。
英语肯定句变否定句所有规则21
一、简单句中含有be动词、情态动词和助动词时，变否定句 时需在be动词、情态动词和助动词后加not。 1. （am, is ,are 是be动词）如：I am a teacher．→I am not a teacher．This is a pen.→ This is not a pen.或This isn’t a pen. (is not =isn’t) You are a boy. →You are not a boy. (are not =aren’t) 2. （can是情态动词）He can help me．→He can not help me．或He can’t help me.(can not =can’t ) 3.当主语是第一人称、第二人称和第三人称复数时用助动词do,变否定时，在do后面加not 如：I like English .I do not like English.或I don’t like English. They go to school together. →They do not (don’t) go to school together. 4.当主语是第三人称单数时用does,变否定时，在does后面加not，如：The little girl wants to go there.→ The little girl does not (doesn't ) want to go there． 2．简单句中谓语动词为行为动词时，要根据时态选用do的相应形式，把肯定句变为否定句。如： The little girl wants to go there．→The little girl doesn't want to go there． He did his work yesterday．→He didn't do his work
关于英语中的否定句
关于英语中的否定句 1)一般否定 这是一般意义上的否定句。否定句是指谓语部分使用了否定表达的形式。 I don’t know this. No news is good news. There is no person /not a person/not any person in the house. 2)特指否定 这是指否定句子中的某一成份，例如下面例句是对状语的否定。 He went to his office, not to see him. I am sorry for not coming on time. I don’t think/believe/suppose/feel/imagine you are right. 3)部分否定 这是指对主语或宾语中所提到的人或事物，进行部分的否定，而不是全部提到的人或事物。句中使用了not all, not everybody, not both 一类的句式。 I don’t know all of the boys over there. I can’t see everybody in the meeting room. All is not gold that glitters. （闪光的不一定都是金子。） Both of them are not right.（并非两人都对。） 4)全体否定 这是指对主语或宾语中所提到的人或事物，进行全部的否定，即每个人或事都不是的。句子主要使用了有全部否定含义的词语，如none, nothing, neither 等。 None of my friends were involved in this case. I can see nobody in the deserted street. Nothing can be so simple as this. Neither of them is to blame for being late. 5) 延续否定 用两个简短的否定句，进一步表达否定的意思。 You didn't see him last night, neither/nor did I. You don't know about it, I don't know either. He doesn't know English, let alone/to say nothing of/not to speak of French. 6) 半否定句 这是由英语中特定的词语所决定的，与上面所说的部分否定有相似之处，这些词语是seldom, hardly, little, few 等，表示全部否定中还有一点点是肯定的。 We seldom/hardly/scarcely/barely hear such fine singing. I saw few people at the bus station at midnight. 7) 双重否定 双重否定即否定之否定，用两个否定来表示肯定，在语气上要强烈得多。 You can't make something out of nothing. What's done cannot be undone. There is no sweet without sweat. No gains without pains. I can't help /keep/ laughing whenever I hear it. No man is so old but (that) he can learn. 8)排除否定 也是一种部分否定，句子使用了表示排除的介词，如except, but, but for 等。介词后面的部
英语的否定句
肯定句变否定句 1．简单句中含有系动词be、情态动词和助动词时，变否定句时需在系动词be、情态动词和助动词后加not。如：I am a teacher．→I am not a teacher． He can help me．→ He can't help me． 2．简单句中谓语动词为行为动词时，要根据时态选用do的相应形式，把肯定句变为否定句。如： The little girl wants to go there． →The little girl doesn't want to go there． He did his work yesterday．→ He didn't do his work yesterday． 3．祈使句变否定句时，一般在句首加Don't，但Let us或Let's开头的祈使句在Let us或Let's 后加not即可。如： Put them over there．→ Don't put them over there． Let us go home．→ Let us not go home． 4．主从复合句中，主句是I think，I believe等结构，变否定句时，形式上否定主句，实际上否定从句。如： I don't think chickens can swim ．我认为鸡不会游泳。 5．“had better ＋动词原形”，变否定句时为“had better not ＋动词原形”。如： Y ou'd better go to school．→ Y ou'd better not go to school． 6．动词不定式变否定式时，常在不定式to前加not。如： The teacher tells me to do it．→ The teacher tells me not to do it． 7．使役动词和感官动词（make，let，hear，see，watch等）后接省略to的不定式，此种不定式变否定句时只需在省略to的动词原形前加not。如： I saw her work．→ I saw her not work．
英语肯定句改否定句
1、You can use this dictionary.（改为否定句） You cannot（can’t）use this dictionary. 2、There is some wonderful news in today’s paper.（改为否定句） There areany wonderful news in today’s paper. 3、They play football on the playground.（改为一般疑问句，并作肯定回答） Do they play football on the playground? Yes, they do. 4、This is my ID card.（改为一般疑问句） Is this your ID card？ 5、The schoolbag is under the desk.（改为一般疑问句，并作肯定回答） Is the schoolbag under the desk? Yes,it is. 一、肯定句改否定句的方法： 1、在be动词后加not。如：is not ， are not ，am not， was not， were not； 2、在can，should， will等后加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。 如： I am a girl. → I am not a girl. You are a student. →You are not a student. →You aren’t a student. This is Tom’s bag, → This is not Tom’s bag. → This isn’t Tom’s bag. 答题方法是；否定词not在be后边。 二、肯定句改一般疑问句的方法： 1、把be动词放在句首，剩下的照抄，（some 改成any，I改成you，my改成your，）句点改成问号。 2、把can，shall， will等放到句首，剩下的照抄，（some 改成any，I改成you，my改成your，）句点改成问号。 3、上述都没有的，在句首请助动词Do/Does/Did帮忙，剩下的照抄，（some 改成any，I改成you，my 改成your，）句点改成问号。 注意：句首的第一个字母要大写，句尾标点应为“？”。如： I am in Class 6. →Are you in Class 6?
英语中常见的否定句形式
英语中常见的否定句形式： 1.对动词进行否定常用： It is good for studying. ------------ It is not good for studying. I do my homework every day. ---------- I don’t do my homework every day. Jim enjoys singing . --------- Jim doesn’t enjoy singing . The girls are dancing .----------- The girls aren’t dancing . It was sunny yesterday .----------- It wasn’t sunny yesterday . 试着变下列句子： He watched TV last night . I did my homework yesterday . I’d like some noodles . There are some trees in the countryside. 2.在句型和句型中对名词进行否定，在名词前加。注意名词前不用冠词、指示代词、人称 代词、形容词以及等修饰。如There is no water . I have no money. He has no English books . 3.使用具有否定意义的进行否定。如never , nobody , nothing , few , little , without ,neither , nor ,no longer 等。 注意：在肯定句变否定句的过程中，有些要作对应的特殊变化 ①some 变any，如I have some work to do .------ ②already 变yet ，如I am already a worker .-------- ③and常常变为or，如l like apples and bananas .--------- ④I think引导的宾语从句，对从句的否定要移到主句，这在语法上叫“否定前移”。如 I think running is good for our health . ------- ⑤I like the book very much . --------- I don’t like the book at all . 常见的非谓语动词短语： 1、动词不定式的基本形式“to +动词原形”： ①want to do sth , would like to do sth , tell sb to do sth , need to do sth , ask sb to do sth , decide to do sth ②It’s good to go to the beach . It’s time to get up . It’s easy to study English . It takes sb to do sth . ③注：带有疑问词的不定式形式“疑问词+ to +动词原形”，如： We learned how to call the fire station and what to do when there is fire . I don’t know what to do and how to do it . ④Make ,let 作“使，让”的含义时，其动词不定式不带to,如： let sb do sth , make sb do sth . ⑤help后的动词不定式可以带to，也可以不带to，如help sb (to) do sth
肯定句变否定句的基本方法
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not I’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’t He 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。
肯定句变否定句
英语语法之肯定句变否定句一、肯定句变否定句口诀 给句子分析它，看它结构是哪个 主加be后加not 其他一切全照抄 主加动词主重要 don't doesn't 来帮忙 don't doesn't 中间夹 doesn't doesn't 最特殊第三人称单数全靠它 二、简单句的句子结构 1.主语+be+其他 2.主语+动词+其他 备注：其中be里包括（am is are） 判断下列各句是主语加be还是主语加动词 1.I am a girl. 2.I like singing. 3.We go to school every day. 4.They are good friends. 5.He works hard. 6.She likes playing with toys. 7.My mother watches TV every day. 8.You are a beautiful girl. 9.Tom is playing football on the playground.
10.Bill does his homework after supper. 三、肯定句变否定句规则 肯定句 主语+be+其他变成主语+be+not+其他 主语+动词+其他变成主语+don't+动词+其他 主语（第三人称单数）+动词单三+其他变成 主语（第三人称单数）+doesn't +动词原形+其他 练习 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 doll. 10.It is eating fish. 肯定句变否定句的基本方法 发布人：圣才学习网发布日期：2010-06-24 13:39 共人浏览[大] [中] [小] 【导读】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not： I’m old， but you’re young． 一．动词be的否定式