1、中考英语肯定句变否定句专项练习班级 考号 姓名 总分 （一）1.I think she is there.I _ _ she is there.2.He can sing this song and that one.He _ sing this song or that one.3.Tom went to school too.Tom _ go to school _.4.He has had supper already.He _ had supper _.5.He had a good rest just now.He _ _ a good rest just now.6.Lets do
2、 it._ lets do it.或Lets _ do it.7.He always gets there on time.He _ _ there on time.8.Be here early tomorrow._ _ here early tomrrow.9.You had better come.You had better _ _.10.Both Tom and Xiao Ping went to school._ Tom _ Xiao Ping went to school.（二）1.Students should try their best to study hard.Stud
3、ents _ _ their best to study hard.2.He put up the notice on the wall He _ _ up the notice on the wall.3.His friend has already e-mailed the photos.His friend _ e-mailed the photos _.4.She will do something next Sunday.She _ do _ next Sunday.5.Let him go boating today! _ _him go boating today!6.She d
4、oes her homework at home in the evening.She _ _ her homework at home in the evening.7.Ann had some rice and chicken for supper yesterday.Ann _ have _ rice _ chicken for supper yesterday. 8.Youd better ask that policeman.Youd _ ask that policeman. 9.Both Wei Hua and Wei Fang can do it._ Wei Hua _ Wei
5、 Fang can do it.10.My brother went to see the film yesterday afternoon.My brother _ _ to see the film yesterday afternoon.11.I have ever visited the Great Wall with my son.I _ _ visited the Great Wall with my son.12.He did some work this morning.He _ do _ work this morning.13.My friend likes films a
6、bout cowboys.My friend _ _ films about cowboys.附：部分参考答案和解析（一）1.I think she is there.误I think she isnt there.正I _ _ 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
7、 _ 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 didnt go to school too.正Tom _ go to school _.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 hasnt 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 good rest just now.误He hadnt
8、 a good rest just now.正He _ _ 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.Lets do it.误Lets dont do it.正_ lets do it.或Lets _ do it.析let后接的是不带to的不定式，变为否定式，直接在句首前加Dont或在不定式前加not。7.He always gets there on time.误He doesnt always get there on time.正He _ _ there on time.析He doesnt al
9、ways get there on 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 often rains here.It seldom rains here.8.Be here early tomorrow.误Be not here early tomorrow.正_ _ here early tomrrow.析祈使句的否定，一般在谓语动词前加do not的缩写dont。9.You had better come.误You didnt have better come.正You had better _ _.析had better相
10、当于一情态动词，不可分割，因此not应放在其后。would rather也是如此。10.Both Tom and Xiao Ping went to school.误Both Tom and Xiao Ping didnt go to school.正_ Tom _ Xiao Ping went to school.析一个句子中如果有不定代词both，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not。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
11、(can, shall, will, may, should, would, might, had better等)时，要在动词后直接加not。如：His mother has already called the police for help.His mother _ called the police for help _.We should 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(do, does, did)与否定副词not的缩写形式。The old man hurt his leg last Wednesday.
12、The old man _ _ his leg last Wednesday.注意：动词have和do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：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，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not，而应根据情况在其前使用dont, doesnt, didnt：He has a car.He _ _ a ca
13、r.He had some dictionaries.He _ _ any dictionaries.You have to go with him.You _ _ to go with him.He had some cake for breakfast.He _ _ any cake for breakfast.We had a good holiday.We _ _ a good holiday.用作助动词构成完成时态，其否定式只能在其后加not：I have read the book.I _ _ read the book.He had left when I arrived.He
14、_ _ when I arrived.动词do的否定式助动词do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do的句型中改为否定句时一定要注意两个do的用法。不管是助动词还是实义动词都有三种形式，do, does, did.I did some washing yesterday.I _ _ any washing yesterday.He does his homework every day.He _ _ his homework every day原句中含有every, everything, all, both等不定代词或bothand, a lot of 等短
15、语时，与否定副词not连用属部分否定。把这些不定代词变成neither, none, no one或把bothand变成neithernor时，才是全部否定。如：Both Joy and Sam like singing Beijing Opera._ Joy _ 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, suppose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 come here soon.I _ _ she will come
16、 here soon.I believed that Mr Li was honest.I _ believe that Mr Li _ honest.He can make a mosel plane, I think.I _ think he _ make a model plane.否定不定式及动名词的直接在其前加not.常见的有not to do, not do, not doing.Mother told me to go to bed early last night.Mother gold me _ _ go to bed early last night.Lets play b
17、asketball on the playground this afternoon.Lets _ _ basketball on the playground this afternoon.Would you mind turning down the radio.Would you mind _ _ the radio.原句子中的some改为any(与some有关的复合不定代词一律换为含any的复合词)；too改either；already改为yet; and改为or等。They had some friends in ChinaThey _ have _ friends in China.I could dance and sing when I was five years old.I _ dance _ sing when I was five years old.5
