肯定句变否定句课件
肯定句变否定句+附答案
肯定句变否定句和一般疑问句习题一、实义动词He often goes to bed at ten.___________________________________________________________________ _____________________________________________________________________________________________ ________________ We do eye exercises every day.___________________________________________________________________ _____________________________________________________________________________________________ ________________二、系动词I am your friend.___________________________________________________________________ _____________________________________________________________________________________________ ________________ Her mother is a teacher.___________________________________________________________________ _____________________________________________________________________________________________ ________________ There are two books on the desk.___________________________________________________________________ _____________________________________________________________________________________________ ________________ 三、进行时The girl is standing at the station.___________________________________________________________________ _____________________________________________________________________________________________ ________________ The students are playing basketball on the playground.___________________________________________________________________ _____________________________________________________________________________________________ ________________ I am looking for a job recently.___________________________________________________________________ _____________________________________________________________________________________________ ________________ 六、情态动词You can use this dictionary.___________________________________________________________________ _____________________________________________________________________________________________ ________________ You need go tomorrow.___________________________________________________________________ _____________________________________________________________________________________________ ________________将下列陈述句变为否定句和一般疑问句。
初中英语 人教版七年级上册Unit5 肯定句改为否定句和一般疑问句课件
保镖法
eg: He likes bananas.（改为否定句）
He d_o_e_s_n_’__t_ __li_k_e_____ bananas?
第三人称单数胆子小， 出门需要带保镖
保镖开路，原形毕露
谓语动词是实义动词-------肯定句变一般疑问句
方法
主语第三人称单数 主语非第三人称单数
在句首加Does 在句首加Do
保镖开路，原形毕露
练一练
1 .My mother comes from Jiangsu.（改为否定句） My mother __d__o_e_s__n_’_ t co__m__e__ from Jiangsu.
2 They like swimming.（改为否定句） They ___d_o__n_’__t_ __li_k_e_____ swimming.
句型转换
肯定句变否定句和一般疑问句
人教版英语七上第5单元
目
根据谓语动词把句子分类 谓语动词是be动词怎么变否定句和一般疑问句 谓语动词是实义动词的怎么变否定句和一般疑问句的心脏
1. She is a student. 2. They are from China.
谓语动词是be动词
√ I'm not a boy. × I amn’t a boy.
e.g He is from China.（改为否定句） He is not from China.
He isn't from China.
谓语动词是be 动词-------肯定句变一般疑问句
方法
一提 二改
把be提前 第一人称改第二人称
保镖开路， 原形毕露
保镖开路，原形毕露
变否定句和一般疑问句方法
否定句及一般疑问句
句型转换肯定句变否定句及一般疑问句一、肯定句变否定句1、含有be动词的否定句规则：在be动词后+not.（is not可缩写成isn’t ；are not可缩成aren’t，但am 与not不可缩写）eg:肯定句：I am a student.否定句：I am not a student.肯定句：She is my sister.否定句：She isn’t my sister.肯定句：They are my parents.否定句：They aren’t my parents.2、含情态动词的否定句规则：在情态动词后+ not（can not 可缩写成can’t ，must not 可缩写成mustn’t ）eg:肯定句：I can spell “English”.否定句：I can’’t spell “English”.English”.肯定句：I must find it.否定句：I mustn’t find it.3、含有实义动词的句子的否定句构成（1）第三人称单数做主语。
（he、she、it或表示单个人或物的第三人称名词）规则：要在行为动词前加上助动词doesn’t，然后将动词恢复原形。
eg ：肯定句：He has a soccer ball.否定句：He doesn’t have a soccer ball.（2）其它人称做主语规则：在行为动词前加don’t ，句子中的行为动词用原形。
eg:肯定句：They like bananas.否定句：They don’t like bananas.注：（1）在变否定句时，如遇some应变any Here are some books.Here aren’t any books.二、肯定句变一般疑问句1、含有be动词的句子变一般疑问句规则：把be动词提至句首,第一人称变第二人称，句末句号变问号。
（I/we变成youMy/our变成your）肯定句：I am a student.一般疑问句：Are you a student?肯定句：She is my sister.一般疑问句：Is she your sister?肯定句：They are my parents.一般疑问句：Are they your parents?2、含有情态动词的句子变一般疑问句规则：把情态动词提至句首,第一人称变第二人称，句末句号变问号。
英语四个基本时态的 肯定句变否定句
_M_r_s_.__L_i_a_n_d__K_i_t_t_y__a_r_e__n_o__t_i_n__a_b__ig__s_h_o_p__. ________ .
8. He is crying（哭） under the tree.
____H__e_i_s_n__o_t__c_r_y_i_n_g_（__哭__）___u_n_d_e_r__t_h_e__t_r_e_e__. _____ .
9. His birthday is on the twentieth of November.
The old man doesn’t do morning exercises（早操） every morning.
23. We are from China.
_________W___e__a_r__e_n__’t__f__r_o_m___C__h_i_n_a__.________ .
24. He goes to the library（图书馆） on Sundays.
_____H_e__d_o_e_s_n_’_t__g_o_t_o__th__e_l_ib_r_a_r_y__o_n_S_u_n_d_a_y_s_.____ .
25. They have a class meeting every week.
_T_h__e_y_d__o_n_’t__h_a_v_e__a__c_l_a_s_s_m__e_e_t_i_n_g__e_v_e_r_y__w__e_e_k_. .
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。
怎样把肯定句改成否定句及怎样把否定句改成肯定句
否定句：我们不要做一个懒惰的孩子。 注：要→不要 勤劳→懒惰
（二）否定句改为肯定句
例：小明不是一个调皮的孩子。（否定句改 为肯定句）
肯定句：小明是一个乖巧的孩子。
注：调皮→乖巧
练一练
1、小红是一个好孩子。 改成否定句：
2、小丁不喜欢晚睡。 改成肯定句：
肯定句和否定句怎样互改
乐安谷岗中心小学：赖祥梅
• 肯定句与否定句的互改的要点：
• 1、肯定句改否定句：加上否定词，并把关键词 改为与其意思相反的词语。（双重否定表肯定）
• 2、否定句改肯定句：去掉否定词，把关键词改 为与其意思相反的词语。
• 3、改后的句子不能改变句意，要和原句的句意 一致。
（一）肯定句改为否定句
1、小红是一个好孩子。 否定句：小红不是一个坏孩子。
2、小丁不喜欢晚睡。 肯定句：小丁喜欢早睡。
肯定句变否定句和一般疑问句类型_习题(整理了答案)备课讲稿
肯定句变否定句和一般疑问句类型一、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 job recently._________________________________________ He was writing letters at this time last night._________________________________________ _________________________________________ We were having a meeting this time yesterday.________________________________________ 四、情态动词Lucy will be back in four days._________________________________________ You can use this dictionary._________________________________________ You need go tomorrow._________________________________________ We ought to answer this question now?_________________________________________ Little Jane dared go alone. __________________________________________________________________________________将下列陈述句变为否定句和一般疑问句。
肯定句变否定句
肯定句变否定句一、动词后直接加not。
原句中含有be动词 (am, is, are, was, were) 。
I am a teacher. ---->I am not a teacher.我是一个老师。
---->我不是老师。
原句中含有情态动词 (can, shall, will, may, should, would, might, had better 等) 。
Li Lei can swim.---->Li Lei cannot/can't swim.李雷会游泳。
---->李雷不会游泳。
He will go to the zoo if it rains tomorrow.---->He will not/won't go to the zoo if it rains tomorrow.如果明天下雨，他将去动物园。
---->如果明天下雨，他就不去动物园了。
原句中含有助动词（have, has, had）。
We have learned 3,000 words. ---->We have not/haven't learned 3,000 words.我们已经学会了3000个单词。
---->我们还没有学会3000个单词。
We have heard from him since he left. ---->We have not heard from him since he left.他走后我们收到他的来信。
---->他走后杳无音讯。
二、原句中没有be动词，助动词或情态动词时，要在行为动词前加助动词 (do, does, did) 与否定副词 not 的缩写形式。
句中第一个动词是原形时，在其前加上don’t。
I get up at six o'clock every day.---->I don't get up at six o'clock every day.我每天六点起床。
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肯定祈使句变否定祈使句，也是 在动词前加直接don't. 3. Have some bread, Tom. Don't have any bread ,Tom. 4. Please open your books.
Please don't open your books.
Hale Waihona Puke ②当句中的动词是第三人称单数时， 在动词前加doesn’t ，动词还原原形。 She likes singing. → She doesn’t like singing. She does her homework. → She doesn’t do her homework.
肯定句变否定句
1.I am a student. → I am not a student. 2.You are sad. → You are not sad. 3. She is a good girl. → She is not a good girl. 4.Yesterday was Monday. → Yesterday was not Monday. 5.They were busy yesterday. → They were not busy yesterday.
1.如果句中有be动词
（ is, am , are, was,
were),就在be动词后 面直接加not。
be 动词和not的缩写形式： is not = isn't are not = aren't was not = wasn't were not = weren't 注意：am not 不能缩写。
肯定句变否定句 练一练
1. I am your friend. _____________________________
2. My mother is a worker. _____________________________
3. There are some books on the bookshelf. _____________________
2. You can use the dictionary. You can't use the dictionary.
3. Peter need go home now. Peter needn't go home now .
4. You should say “Sorry”. You shouldn't say “Sorry”.
词后面直接加not。
can not = can't must not = mustn't should not = shouldn't need not = needn't will not = won't
1. Lucy will be back in a week. Lucy won't be back in a week.
4. You should open your book. You should not open your book. 5. He must finish his homework. He must not finish his homework.
2.如果句中有 （can ,may,must,should , need, will等），就在这些单
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.
5.There are some books on the bookshelf. There are not any books on the bookshelf. 6. I was at home yesterday. I was not at home yesterday. 7. They were in Beijing ten years ago. They were not in Beijing ten years ago.
7.She can sing a song and draw a picture. _____________________________ 8. Peter need go home tomorrow. _____________________________ 10. We come from China. _ _____________________________ 11.He likes the violin. _____________________________
注意：句中有 some,一般要改为
any.
1.I can swim. → I can not swim. 2.You will go to the park. → You will not go to the park. 3. Peter need go home now. Peter need not go home now
③当句中的动词是过去式时,在动 词前加didn’t，动词还原原形。 We had a great time last year.→ We didn't have a great time last year.
I went to school yesterday. → I didn't go to school yesterday.
5. He must stay at home . He mustn't stay at home .
3.如果句中没有be动词，也 没有情态动词，就
要借助（don’t, doesn’t, didn’t）来帮忙。
①当句中的动词是原形 时，在动词前直接加 don’t。 I like English. → I don't like English. You have dinner. → You don't have dinner.
4. I was at home yesterday. _____________________________
5. They were in Beijing ten years ago. _________________________
6.Lucy will be back in a week. ______________________