怎样改肯定句为否定句-肯定句改否定句
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(1)It will rain the day after tomorrow. It won"t rain the day after tomorrow. (2)The children were busy just now. The children weren"t busy just now. (3)He has been abroad before. He hasn"t been abroad before. 2、然后“加〞，假如句中没有上述词，则须在动词前加上助动词 do,does,did 构成否认句,同时要将原句中的动词变成原形。 (4)His parents bought him a new bike. His parents didn"t buy him a new bike.
本文格式为 Word 版，下载可任意编辑，页眉双击删除即可。
怎样改肯定句为否定句|肯定句改否定句
(5)My friend does his homework at home. My friend doesn"t do his homework at home.
将确定改为否认句是句型转换练习中常见的题型之一，怎样改呢？ 1、首先“找〞，在句中找 be(is,am,are,was,were,助动词或情态动词 (will,have,has,had,shall,would,could,can,等)假如有,则在上述词后 直接加 not。
第1页共4页
本文格式为 Word 版，下载可任意编辑，页眉双击删除即可。
not,但是假如 have(has,had)作实义动词，则在句中需要依据动词形式加 do sth.
适当的助动词 do,does,did 构成否认句。
(14)You"d better cThey had finished the work by the end of last month.
You"d better not call me in the evening.
They hadn"t finished the work by the end of last month.
(6)The foreigners speak Chinese here. The foreigners don"t speak Chinese here. 3、将句中的一些副词(连词)变成反义词，常见的有 already→yet;and →or;very much→at all;always→never;often→seldom. (7)He always stays at home on Sundays. He never stays at home on Sundays. 4、将句中的一些代词变成其反义词，常见的有 all→none;both→ neither;everything→nothing;everybody→nobody;both…and→ neither…nor. (8)Both of the twins study in our school. Neither of the twins studies in our school. (9)Both jim and Kate have visited the factory. Neither jim nor Kate has visited the factory. 5、在完成时态中 have(has,had)为助动词,构成否认句直接在其后加
(18)Neither of his parents is a teacher.他父母都不是老师。
He usedn"t to live in the country.或 He didn"t use to live in
(19)Everyone doesn"t like to be late.不是每个人都想要迟到。
9、动词不定式的否认形式为在 to 前加 not.〔不需要加助动词〕。
(11)The students had a meeting after school.
(15)Will you please keep the windows open?
The students didn"t have meeting after school.
The teacher told us not to hand in the homework today.但区分：
(12)I have a dictionary
The teacher didn"t tell us to hand in the homework today.
I haven"t a dictionary.或 I don"t have a dictionary.
10、值得一提的是完全否认和不完全否认。
7、used to do sth“过去经常做……〞,可以直接在 used 后加 not 也
试比较下面两组句子：
可以加助动词 did 构成否认。
(17)Both of his parents aren"t teachers.他父母不都是老师。
(13)He used to live in the country.
the country.
(20)Nodody likes to be late.每一个人都不想要迟到。
8、had better do sth.“最好做……〞的否认结构为 had better not
11、must 作“必需，应当〞讲时，其否认用 mustn"t 或 needn"t，但
第2页共4页
本文格式为 Word 版，下载可任意编辑，页眉双击删除即可。
Will you please notkeep the windows open?
6、have(has,had)作“有〞讲时，既可以在其后直接加 not 也可以加
(16)The teacher told us to hand in the homework today.
助动词 do,does,did 构成否认。
本文格式为 Word 版，下载可任意编辑，页眉双击删除即可。
怎样改肯定句为否定句|肯定句改否定句
(5)My friend does his homework at home. My friend doesn"t do his homework at home.
将确定改为否认句是句型转换练习中常见的题型之一，怎样改呢？ 1、首先“找〞，在句中找 be(is,am,are,was,were,助动词或情态动词 (will,have,has,had,shall,would,could,can,等)假如有,则在上述词后 直接加 not。
第1页共4页
本文格式为 Word 版，下载可任意编辑，页眉双击删除即可。
not,但是假如 have(has,had)作实义动词，则在句中需要依据动词形式加 do sth.
适当的助动词 do,does,did 构成否认句。
(14)You"d better cThey had finished the work by the end of last month.
You"d better not call me in the evening.
They hadn"t finished the work by the end of last month.
(6)The foreigners speak Chinese here. The foreigners don"t speak Chinese here. 3、将句中的一些副词(连词)变成反义词，常见的有 already→yet;and →or;very much→at all;always→never;often→seldom. (7)He always stays at home on Sundays. He never stays at home on Sundays. 4、将句中的一些代词变成其反义词，常见的有 all→none;both→ neither;everything→nothing;everybody→nobody;both…and→ neither…nor. (8)Both of the twins study in our school. Neither of the twins studies in our school. (9)Both jim and Kate have visited the factory. Neither jim nor Kate has visited the factory. 5、在完成时态中 have(has,had)为助动词,构成否认句直接在其后加
(18)Neither of his parents is a teacher.他父母都不是老师。
He usedn"t to live in the country.或 He didn"t use to live in
(19)Everyone doesn"t like to be late.不是每个人都想要迟到。
9、动词不定式的否认形式为在 to 前加 not.〔不需要加助动词〕。
(11)The students had a meeting after school.
(15)Will you please keep the windows open?
The students didn"t have meeting after school.
The teacher told us not to hand in the homework today.但区分：
(12)I have a dictionary
The teacher didn"t tell us to hand in the homework today.
I haven"t a dictionary.或 I don"t have a dictionary.
10、值得一提的是完全否认和不完全否认。
7、used to do sth“过去经常做……〞,可以直接在 used 后加 not 也
试比较下面两组句子：
可以加助动词 did 构成否认。
(17)Both of his parents aren"t teachers.他父母不都是老师。
(13)He used to live in the country.
the country.
(20)Nodody likes to be late.每一个人都不想要迟到。
8、had better do sth.“最好做……〞的否认结构为 had better not
11、must 作“必需，应当〞讲时，其否认用 mustn"t 或 needn"t，但
第2页共4页
本文格式为 Word 版，下载可任意编辑，页眉双击删除即可。
Will you please notkeep the windows open?
6、have(has,had)作“有〞讲时，既可以在其后直接加 not 也可以加
(16)The teacher told us to hand in the homework today.
助动词 do,does,did 构成否认。