初中英语中考复习肯定句变否定句专项练习（附部分参考答案和相关知识讲解）

这是一份初中英语中考复习肯定句变否定句专项练习（附部分参考答案和相关知识讲解），共5页。试卷主要包含了Let’s d it等内容，欢迎下载使用。
（一）
1.I think she is there.
I _______ _______ she is there.
2.He can sing this sng and that ne.
He _______ sing this sng r that ne.
3.Tm went t schl t.
Tm ________ g t schl ________.
4.He has had supper already.
He _______ had supper _______.
5.He had a gd rest just nw.
He _______ _______ a gd rest just nw.
6.Let’s d it.
________ let’s d it.
或Let’s _______ d it.
7.He always gets there n time.
He _______ _______ there n time.
8.Be here early tmrrw.
_______ _______ here early tmrrw.
9.Yu had better cme.
Yu had better _______ _______.
10.Bth Tm and Xia Ping went t schl.
_______ Tm _______ Xia Ping went t schl.
（二）
1.Students shuld try their best t study hard.
Students ________ _______ their best t study hard.
2.He put up the ntice n the wall
He ____ ____ up the ntice n the wall.
3.His friend has already e-mailed the phts.
His friend _________ e-mailed the phts _________.
4.She will d smething next Sunday.
She _____ d ________ next Sunday.
5.Let him g bating tday!
________ _________him g bating tday!
6.She des her hmewrk at hme in the evening.
She _______ _______ her hmewrk at hme in the evening.
7.Ann had sme rice and chicken fr supper yesterday.
Ann _______ have _______ rice _____ chicken fr supper yesterday.
8.Yu’d better ask that pliceman.
Yu’d _______ ask that pliceman.
9.Bth Wei Hua and Wei Fang can d it.
_______ Wei Hua _______ Wei Fang can d it.
10.My brther went t see the film yesterday afternn.
My brther _______ _______ t see the film yesterday afternn.
11.I have ever visited the Great Wall with my sn.
I _______ _______ visited the Great Wall with my sn.
12.He did sme wrk this mrning.
He _______ d _______ wrk this mrning.
13.My friend likes films abut cwbys.
My friend ______ _______ films abut cwbys.
附：部分参考答案和解析
（一）
1.I think she is there.
[误]I think she isn’t there.
[正]I _______ _______ she is there.
[析]英语中think, believe, expect, suppse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 sng and that ne.
[误]He cannt sing this sng and that ne.
正；He _______ sing this sng r that ne.
[析]肯定句中的连词and在否定句中一般要改为r。
3.Tm went t schl t.
[误]Tm didn’t g t schl t.
[正]Tm ________ g t schl ________.
[析]t和als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 _______ had supper _______.
[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 gd rest just nw.
[误]He hadn’t a gd rest just nw.
[正]He _______ _______ a gd rest just nw.
[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 d it.
[误]Let’s dn’t d it.
[正]________ let’s d it.
或Let’s _______ d it.
[析]let后接的是不带t的不定式，变为否定式，直接在句首前加Dn’t或在不定式前加nt。
7.He always gets there n time.
[误]He desn’t always get there n time.
[正]He _______ _______ there n time.
[析]He desn’t always get there n time意为“他并非老是准时到那儿”，是部分否定，习惯上把句中的副词改为相应的表示否定的副词即可。如：
It ften rains here.
→It seldm rains here.
8.Be here early tmrrw.
[误]Be nt here early tmrrw.
[正]_______ _______ here early tmrrw.
[析]祈使句的否定，一般在谓语动词前加d nt的缩写dn’t。
9.Yu had better cme.
[误]Yu didn’t have better cme.
[正]Yu had better _______ _______.
[析]had better相当于一情态动词，不可分割，因此nt应放在其后。wuld rather也是如此。
10.Bth Tm and Xia Ping went t schl.
[误]Bth Tm and Xia Ping didn’t g t schl.
[正]_______ Tm _______ Xia Ping went t schl.
[析]一个句子中如果有不定代词bth，all, every改为否定式时，要把这些不定代词改为相应的表示否定的代词。
附：
肯定句变否定句的技巧
1.动词后直接加nt。原句中含有be动词(am, is, are, was, were) 和助动词(have, has, had) 和情态动词(can, shall, will, may, shuld, wuld, might, had better等)时，要在动词后直接加nt。如：
His mther has already called the plice fr help.
→His mther ______ called the plice fr help ______.
We shuld help them.
→We _______ _______ them.
2.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(d, des, did)与否定副词nt的缩写形式。
The ld man hurt his leg last Wednesday.
→The ld man ______ ______ his leg last Wednesday.
注意：动词have和d
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 t表示“必须”等，也表示动作，如表示“吃(=eat)”、“喝(=drink)”、“拿(=take)”、“收到(=receive)”、“度过(=spend)”等，构成否定式时不能直接在其后加nt，而应根据情况在其前使用dn’t, desn’t, didn’t：
He has a car.
→He ______ ______ a car.
He had sme dictinaries.
→He _______ _______ any dictinaries.
Yu have t g with him.
→Yu _______ _______ t g with him.
He had sme cake fr breakfast.
→He _______ _______ any cake fr breakfast.
We had a gd hliday.
→We _______ _______ a gd hliday.
②用作助动词构成完成时态，其否定式只能在其后加nt：
I have read the bk.
→I _______ _______ read the bk.
He had left when I arrived.
→He _______ _______ when I arrived.
动词d的否定式
助动词d只在否定句和问句中出现，在肯定句中只能是做实义动词“做….”,所以在含d的句型中改为否定句时一定要注意两个d的用法。不管是助动词还是实义动词都有三种形式，d, des, did.
I did sme washing yesterday.
→I _______ _______ any washing yesterday.
He des his hmewrk every day.
→He ______ ______ his hmewrk every day
原句中含有every, everything, all, bth等不定代词或bth…and…, a lt f 等短语时，与否定副词nt连用属部分否定。把这些不定代词变成neither, nne, n ne或把bth…and…变成neither…nr…时，才是全部否定。如：
Bth Jy and Sam like singing Beijing Opera.
→______ Jy ______ Sam likes singing Beijing Opera.
在含有宾语从句的主从复合句中，当主句的主语是第一人称，谓语动词是think,believe, suppse时，如果要否定后面的宾语从句，习惯上否定主句的谓语动词。如：
I think she will cme here sn.
→I _______ ______ she will cme here sn.
I believed that Mr Li was hnest.
→I ______ believe that Mr Li ______ hnest.
He can make a msel plane, I think.
→I ______ think he ______ make a mdel plane.
否定不定式及动名词的直接在其前加nt.常见的有nt t d, nt d, nt ding.
Mther tld me t g t bed early last night.
→Mther gld me _______ _______ g t bed early last night.
Let’s play basketball n the playgrund this afternn.
→Let’s _______ _______ basketball n the playgrund this afternn.
Wuld yu mind turning dwn the radi.
→Wuld yu mind ______ _______ the radi.
原句子中的sme改为any(与sme有关的复合不定代词一律换为含any的复合词)；t改either；already改为yet; and改为r等。
They had sme friends in China
→They ______ have ______ friends in China.
I culd dance and sing when I was five years ld.
→I _______ dance _______ sing when I was five years ld.