一般现在时怎样变否定句

一般现在时变否定句的规则.

(a) 含有 am is are 的句子,变否定句时, 只需在am is are 后加not.

例1 This is a book. 否定句 This is not a book .

例2 I am a teacher . 否定句I am not a teacher .

例3 These are pens . 否定句These are not pens .

(b) 含有实义动词的句子，变否定句分两步。

（1）如果主语是第三人称单数时，要在实义动词前加doesn't,后面的动词用原形。

例1 He eats an apple. 否定句 He doesn't eat an apple. 例2 Jim does his homework. 否定句 Jim doesn't do his homework.

例3 Marry goes to school. 否定句Marry doesn't go to school.

(2) 如果主语不是第三人称单数时，只需在实义动词前加don't.

例1 I teach English. 否定句 I don't teach English. 例2 They go to school. 否定句 They don't go to school. 例3 We sing a song. 否定句 We don't sing a song.

例1 I can dance. 否定句 I can not dance. 或 I can't dance.

例2 They can speak English. 否定句 They can not speak English. 或 They can't speak English.

例3 He must go home. 否定句 He must not go home. 或He mustn't go home.

例4 He must be on the playground. He can not be on the playground. 析：当must be用来表示推测，有“一定”的含义时，否定式要用can not.

例5 You must say something at the mecting. Yo u needn’t say anything at the mecting. 析：当“must+行为动词”用来表示“必须”的含义时，其否定式可用needn’t 或mustn't表示“不需要”，“不必”，语气委婉，must not 表示“禁止”，“千万别”语气生硬。

例6 You may come in now. You mustn't come in now. 析：may作为情态动词表示“可以”时，其否定式用must not,而不用may not.

例7 He may watch TV . He mustn't watch TV.

注意: (1) 见到some 变否定句时,要换成any.

例1 I eat some apples. 否定句 I don't eat any apples. 例2 He has some books. 否定句 He doesn't have any books. 例3 He does his home work. 否定句 He doesn't do his home work. (2) 见到and 变否定句时,要换成or. 例1 There is some air and water on the moon. 否定句 There isn't any air or water on the moon. 例2 He has some brothers and sisters. 否定句 He hasn't any brothers or sisters. 例3 He eats apples and oranges. 否定句He doesn’t eat apples or oranges.

(3) 见到too和also变否定句时,要换成either. 例1Tom goes to school too. 否定句Tom doesn’t go to school either. too和also用于肯定句中时，否定句中用either

替换。

（4 见到already变否定句时,要换成yet。例1 He has had supper already. He hasn’t had supper yet. 随着对谓

语动词的否定，某些副词也要作相应的变动。

天天学英语_一般现在时结构(否定句)

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一般现在时训练题经典

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中考英语复习--肯定句否定句疑问句之变形技巧

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一般现在时否定句,一般疑问句

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1. Jane likes eating apples. Jane _______ _______ eating apples. 2. He comes from England. He ______ _____ from England. 3. She has a wide mouth. She ______ ______ a wide mouth. 4. Tom plays computer game on school days. Tom ______ ______ computer game on school days. 5. My mother goes to work by bus . My mother ______ _______ to work by bus. 四．把下列句子变成一般疑问句。 1. I am a student. ____ ____ a student? 2. You are a good boy. ______ _____ a good boy? 3. He is KangKang. _____ _____ KangKang? 4. We are workers. _______ ______ workers? 5. It is a nice cat. _____ ______ a nice cat?

英语肯定句变否定句练习(优.选)

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英语肯定句变否定句的基本方法

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一般现在时否定句

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1.肯定句、否定句的转换 2.双重否定句、陈述句的转换双重否定句：就是否定两次,即表示肯定的意思，但必须有否定的意义在里面。（双重否定句的作用是加强语气。）双重否定句与陈述句的转换：（类似于反问句）一、双重否定句双重否定就是否定两次,即表示肯定的意思，但必须有否定的意义在里面。。例如:“他不是不来”意思是他要来的。包括有双重否定的句子就是双重否定句。比如: （1）我不得不承认那个本是我的. 分析：“不得不”就是双重否定这句话的原意为：我承认那个本是我的。（2）幼儿园的小朋友没有一个不喜欢王老师。 “没有一个…不”就是双重否定词这句话的原句为：幼儿园的小朋友都喜欢王老师。（3）你不会不知道这件事。分析：“不

双重否定从字面上就知道，是一句话中有两个否定词语，表示肯定的意思。双重否定句是相对于单纯否定句而言的，它用否定加否定的形式，表达肯定的语意。一般的语法书普遍认为，双重否定句的作用是加强语气。在双重否定句中，有那么几个可以用：不得不、不能不、难道……不…… 不可能不、不会不、怎么会…… 不、不是不等双重否定句主要有三种形式。（1）、一种是两个否定副词连用，谓语前面加“不。。。不”，也就是负负为正的原理。可用“没有……不……”“不……不……” 如“我不能不被他感动得流下泪来。”又如：这种新产品质量好，价格也便宜。改为：这种新产品质量不能说不好，价格也不能说不便宜。（2）、一种是一个否定副词加上一个否定意义的动词，

如“我们不能否认老一辈人的功劳。” （3）、再一种是一个否定副词（或否定意义的动词）加上反问语气。如“他感人的事迹，叫我怎么不流泪呢？” 另外、把肯定句改为多重否定表否定，使否定成分的个数成奇数个即可例如：我们不得不承认太阳不是绕地球运行的。这三种句式中，否定副词（或否定意义的动词）例如，“敢于这样做的人，难道不是一个英雄吗？”（《内蒙访古》），意思就是“是一个英雄”，但语气更强烈，强调了敢于这样做的人是一个“大大的英雄”。

一般现在时变否定句的规则

一般现在时变否定句的规则. (a) 含有am is are 的句子,变否定句时, 只需在am is are 后加not. 例1 This is a book. 否定句This is not a book . 例2 I am a teacher . 否定句I am not a teacher . 例3 These are pens . 否定句These are not pens . (b) 含有实义动词的句子，变否定句分两步。（1）如果主语是第三人称单数时，要在实义动词前加doesn't,后面的动词用原形。例1 He eats an apple. 否定句He doesn't eat an apple. 例2 Jim does his homework. 否定句Jim doesn't do his homework. 例3 Marry goes to school. 否定句Marry doesn't go to school. (2) 如果主语不是第三人称单数时，只需在实义动词前加don't. 例1 I teach English. 否定句I don't teach English. 例2 They go to school. 否定句They don't go to school. 例3 We sing a song. 否定句We don't sing a song. (c) 含有情态动词的句子,变否定句时, 只需在情态动词后加not. 例1 I can dance. 否定句I can not dance. 或I can't dance. 例2 They can speak English.

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)

一般现在时变否定句的规则

(a) 含有am is are 的句子,变否定句时, 只需在am is are 后加not. 例1 This is a book. 否定句This is not a book . 例2 I am a teacher . 否定句I am not a teacher . 例3 These are pens . 否定句These are not pens . (b) 含有实义动词的句子，变否定句分两步。（1）如果主语是第三人称单数时，要在实义动词前加doesn't,后面的动词用原形。例1 He eats an apple. 否定句 He doesn't eat an apple. 例2 Jim does his homework. 否定句 Jim doesn't do his homework. 例3 Marry goes to school. 否定句Marry doesn't go to school. (2) 如果主语不是第三人称单数时，只需在实义动词前加don't. 例1 I teach English. 否定句 I don't teach English. 例2 They go to school. 否定句 They don't go to school. 例3 We sing a song. 否定句 We don't sing a song. (c) 含有情态动词的句子,变否定句时, 只需在情态动词后加not. 例1 I can dance. 否定句 I can not dance. 或 I can't dance. 例2 They can speak English. 否定句They can not speak English. 或 They can't speak English.

现在进行时、一般现在时、否定句、特殊疑问句习题

现在进行时一、用所给动词的适当形式填空. 1. Look! The cat____________ (run) up the tree. 2. The twins__________ (have) breakfast. 3. ----___he ________ (clean) the blackboard? ----No, he isn’t. 4. Tom__________ (play) the piano in the room. Please ask him to come here. 5. Listen! They____________(sing)in the classroom. 6. My parents _______(watch)TV now. 7. Look. Three boys _______（run）. 8. What _______ your mother _______（do）now? 9. ______ your dog _______ now? （sleep） 10. _______ you _______（listen）to music? Yes, I am. 11. Look, Miss Chen _______ football.（play） 12. Now Class 3 and Class 4_______（have）a test. 13. Listen, someone _______（sing）in the classroom 14. ——Where is Zhang Yan? ——She _______（talk） with her teacher in the teacher’s office. 15.The boy __________________ ( draw)a picture now. 16.Listen！ Some girls _______________ ( sing)in the classroom . 17.My mother _________________ ( cook )some nice food now. 18.What _____ you ______ ( do ) now? 19.Look They _______________( have) an English lesson . 20.They ____________(not ,water) the flowers now. 21.Look! the girls ________________(dance )in the classroom . 22.What is our granddaughter doing? She _________(listen ) t o music. 23.It's 5 o'clock now. We _____________(have)supper now 24.______Helen____________(wash )clothes? Yes ,she is . 25.Nancy and I are __________ (make) a model plane. 26.Look, he is __________ (clean) the windows. 27.The boys ____________ (run) with the cat now. 28.I can’t_________ (skate), but I can _________ (ski). 29.The students are __________ (draw) in the classroom. 30.My sister and I like _________ (listen) to music. 31.My father ____________ (watch) TV in the bedroom now. 32.There _______ (be) a lamp near the sofa.

肯定句否定句疑问句之变形技巧

肯定句/否定句/疑问句之变形技巧一、肯定句改否定句 1、be动词后加not，诸如：is not(isn't)，are not(aren't)，was not(wasn't)，were not(weren't)，am not（无缩写）。 ◆He is a student. 他是一个学生。--- He is not a student. 他不是一个学生。 ◆They were watching TV then. 那时他们正在看电视。--- They weren't watching TV then. 那时他们没在看电视。 2、情态动词等后加not，诸如：can not(can't)，will not(won't)，should not(shouldn't)，must not(mustn't)，need(needn't)等。 ◆She can take care of herself. 她能照顾好她自己。--- She can not(can't) take care of herself. 她不能照顾好她自己。 ◆You should go home. 你应该回家。--- You shouldn't go home. 你不应该回家。 3、若无法找到be动词或情态动词，就在已有动词前额外加助动词否定形式：don't/doesn't/didn't，同时将动词变原形。 ◆She likes the room. 她喜欢这房间。--- She doesn't like the room. 她不喜欢这房间。 ◆We did our homework yesterday. 我们昨天做了作业。--- We didn't do our homework yesterday. 我们昨天没有做作业。注：句中若有some ，须将其改成any。

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

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