助动词do/does的用法专题
助动词do与does口诀?
（一）(do )?变句型，先观察，??陈述句中动用原,?一般疑问do提前，?否定don’t实动前。?
（二）(does)?若是主语为三单，?陈述句中动变形，?一般疑问也简单，?does放在句子前，?否定doesn’t实动前，?主动出现动还原。?
总结：
含有实义动词的句子，进行句子转换时应借助于助动词do/does，主语是三单(he,she,it)时用does，其他用do。否定句在动词原形前加don’t /doesn’t，一般疑问句把do/does 提前,特殊疑问句由特殊疑问词+一般疑问句。
句子类型及结构
肯定句：主语+动词+其它。主语是三单，动词用三单
I like this blue sweater. Tom likes this blue sweater.
我喜欢这件蓝色的毛衣。 Tom喜欢这件蓝色的毛衣。
Tom likes English.
Tom喜欢英语。
I like this blue sweater.
Tom likes English.
否定句：主+ don’t/doesn’t+动原+其它
I don’t like this blue sweater.
我不喜欢这件蓝色的毛衣。
Tom doesn’t like English.
Tom不喜欢英语。
I like this blue sweater.
Tom likes English.
一般疑问句：do/does提前，其它照抄不变（Do /Does+主+动原+其它），一人称变二人称。回答：Yes,主+do/does. No,主+ don’t/doesn’t.
Do you like this blue sweaterYes, I do. / No, I don’t.
你喜欢这件蓝色的毛衣吗是的，我喜欢; 不，我不喜欢。
Does Tom like EnglishYes,he does. / doesn’t.
Tom喜欢英语吗是的，他喜欢；不，他不喜欢。
练一练：
一、选择适当的词填空（用do 和does/don’t doesn’t填空）
1. you like soccer Yes, I .
2. they like ping--pong Yes, they .
3. Tony and Ben like baseball No, they .
4. your friends like tennis Yes, they .
5. your brother like basketball No, he .
6. you like basketball Yes, I .
7. they like salad No, they .
8. Jenny have white sweaters Yes, she .
9. Peter have black trousers Yes, he .
10. your father like apples Yes, he .
11. your friends like bananas No, they .
12. your father and mother have milk for breakfast
Yes, they .
13.I ________( don’t /doesn’t）play sports.
14.You _________( don’t /doesn’t）like ice-cream.
15..My parents________( don’t /doesn’t） want to watch TV.
16.His friend _______( don’t /doesn’t）eat breakfast.
17.Mary _______( don’t /doesn’t）like salad.
18.— he have a tennis ball —Yes, he .
19.— Anna have a ping-pong bat —Yes, she .
20.— Mike and Eric have some balls —No, they
二.按要求完成句子。
1. Jenny has a ping-pong bat. (改为一般疑问句)
_____ Jenny _____a ping-pong bat
2. I like to eat vegetables every day. (改为一般疑问句)
______ you like to eat vegetables every day
3. They like bananas. (改为否定句)
They ______ ______ bananas.
4. Tom likes apples.(改为一般疑问句)
______ Tom ______ apples
5. Does John like chicken(否定回答)
— _______ , ________ _______.
like salad. (改为一般疑问句) _______ ______ ________ salad
you like bananas (作肯定回答) _______ , ________ _________.
they like milk (作否定回答) ________, ______ _________.
he like milk (作否定回答) _______, _______ ________
like tomatoes. (把I改成 he重写句子)
He _________ ___________.
and Alice like carrots. (改为一般疑问句并作肯定回答)
_______________________________ _________________ .
12.你喜欢西红柿吗 _________ you like ___________
13.你弟弟喜欢鸡蛋吗不，他不喜欢。
_______ your brother _______ _______ No, he _________ . have three English books. (改为否定句)
I three English books.
15. I have a new volleyball. (改为一般疑问句)
a new volleyball
16. Does Li Lei have a tennis ball ( 作否定回答)
， .
17.I have a computer. (改为否定句)
I a computer.
18. She has a ping-pong ball. (改为一般疑问句)
she a ping-pong ball
19. Does Helen have a dictionary (作肯定回答)
， .
20.Tony has a baseball bat. (改为一般疑问句)
_____ Tony _____a baseball bat
五：翻译（将中文翻译成英文）
1．你喜欢香蕉吗是的，我喜欢。
2．你妈妈喜欢苹果吗是的，她喜欢。
3．他喜欢篮球吗是的，他喜欢。
4．他们喜欢足球吗是的，他们喜欢。
5．Jenny有裙子吗是的，她有。
6．Tom有黑色长裤吗不，他没有。
7．你爷爷有钢笔吗不，他没有。
8．你爸爸和妈妈喜欢西红柿吗是的，他们喜欢。
答案如下：
一、选择适当的词填空（用do 和does/don’t doesn’t填空）
21. Do you like soccer Yes, I do .
22. Do they like ping--pong Yes, they do .
23.Do Tony and Ben like baseball No, they don’t .
24. Do your friends like tennis Yes, they do .
25. Does your brother like basketball No, he doesn’t .
26. Do you like basketball Yes, I do .
27. Do they like salad No, they don’t .
28. Does Jenny have white sweaters Yes, she does .
29. Does Peter have black trousers Yes, he does .
30. Does your father like apples Yes, he does .
31. Do your friends like bananas No, they don’t .
32. Do your father and mother have milk for breakfast
Yes, they do .
33.I _____don’t__( don’t /doesn’t）play sports.
34.You _____don’t____( don’t /doesn’t）like ice-cream.
35..My parents__don’t______( don’t /doesn’t） want to watch TV.
36.His friend __doesn’t_____( don’t /doesn’t）eat breakfast.
37.Mary __doesn’t_____( don’t /doesn’t）like salad.
38.— Does he have a tennis ball —Yes, he does .
39.— Does Anna have a ping-pong bat —Yes, she does .
40.— Do Mike and Eric have some balls —No, they don’t
二.按要求完成句子。
1. Jenny has a ping-pong bat. (改为一般疑问句)
__Does___ Jenny _have____a ping-pong bat
2. I like to eat vegetables every day. (改为一般疑问句)
___Do___ you like to eat vegetables every day
3. They like bananas. (改为否定句)
They __don’t____ ___like___ bananas.
4. Tom likes apples.(改为一般疑问句)
_Does_____ Tom __like____ apples
5. Does John like chicken(否定回答)
—__No_____ , ___he_____ ____doesn’t___.
like salad. (改为一般疑问句) _Do______ ___you___ __like____ salad
you like bananas (作肯定回答) _Yes____ , _____I___ ____do_____.
they like milk (作否定回答) __No____, __they____
_don’t________.
he like milk (作否定回答) ___No____, ____he___ _doesn’t_______
like tomatoes. (把I改成 he重写句子)
He __likes_______ ____tomatoes_______.
and Alice like carrots. (改为一般疑问句并作肯定回答)
___Do Linda and Alice like carrots______ ___________Yes, they do______ .
12.你喜欢西红柿吗 __Do_______ you like ______tomatoes_____
13.你弟弟喜欢鸡蛋吗不，他不喜欢。
____Does___ your brother ___like____ __eggs_____ No, he ____doesn’t_____ .
have three English books. (改为否定句)
I don’t have three English books.
15. I have a new volleyball. (改为一般疑问句)
Do you have a new volleyball
16. Does Li Lei have a tennis ball ( 作否定回答)
No ， he/she doesn’t .
18.I have a computer. (改为否定句)
I don’t have a computer.
18. She has a ping-pong ball. (改为一般疑问句)
Does she have a ping-pong ball
19. Does Helen have a dictionary (作肯定回答)
Yes ， she does .
21.Tony has a baseball bat. (改为一般疑问句)
____Does_ Tony ___have__a baseball bat
五：翻译（将中文翻译成英文）
1．你喜欢香蕉吗是的，我喜欢。
Do you like bananas/ Yes, I do. 2．你妈妈喜欢苹果吗是的，她喜欢。
Does your mother like apples/ Yes, she does. 3．他喜欢篮球吗是的，他喜欢。
Does he like basketball/ Yes, he does. 4．他们喜欢足球吗是的，他们喜欢。
Do they like soccer ball/ Yes, they do. 5．Jenny有裙子吗是的，她有。
Does Jenny have skirts/ Yes, she does. 6．Tom有黑色长裤吗不，他没有。
Does Tom have black trousers/ No, he doesn’t. 7．你爷爷有钢笔吗不，他没有。
Does your grandfather have pens/ No, he doesn’t. 8．你爸爸和妈妈喜欢西红柿吗是的，他们喜欢。
Do your father and mother/parents like tomatoes / Yes, they do.
小学英语Be动词、助动词、人称代词主宾格练习 一、选择括号里的词的恰当形式填空。 1、There _________(be)some water in the glass. 2、_______(be)Tom ___________(read) a book now? 3、Please pass_____(we) the ball. 4、When _________ (do) your father usually _________ (go) to work? 5、How old __________ (be)you last year? 6、Which dog ________ (be) yours? /Ten and two ________ (be) twelve. 7、Where ________(be) your friends yesterday? 8、I will give the presents to________(they). 9、Lily is taller than (I)./ Put the desk between (he) and (I). 二、选择填空： 1、My brother ____ a teacher. He ____ his pupils very much. A. is, like B. is, likes C. are, likes D. are, like 2、_____ you go to school by bus? A. Are B. Is C. Do D. Does 3、When _____ your birthday? D. does C. do B. is A. are 4、Which ____ bigger, the sun or the moon? A. are B. is C. be D. / 5、What ______ they _____ on Saturdays?
be动词与助动词的用法 1.陈述句:be动词第一人称用am,第二人称用are,第三人称单数用is复数用are. 助动词do一般省略,直接用动词,注意动词时态和人称变化.有时在动词前加do,表示强调,加强语气.如:Do be quiet! 2.疑问句:be动词直接提前,其他部分不变(由陈述句转变).助动词do同样,由省略直接提前放置,后面动词不变,注意do的时态和人称变化. 3.否定句:be动词和助动词do后面加not. be作助动词用的形式如下： ①am, is, are, was, were ②助动词+be：shall be, will be, can be, etc. ③have/has/had + been（完成时） ④am, is, …being（进行时） （1）表达进行时态 句型be + V-ing…（进行时态） 例：What are you reading? （你正在阅读什么？） I am reading a magazine. （我正在阅读杂志。） 例：He will be taking a walk in the park at this time tomorrow morning. （明天早晨此时他将会正在公园散步。） 例：She has been teaching English in our school for years. （她已在我们学校教英语许多年了。） 解说第一例句是表达现在进行时，第二例句是将来进行时，第三例句是现在完成进行时。（2）表达被动语态 句型be +p.p. …（被动语态） 例：English is spoken in both Canada and the United States. （加拿大和美国都讲英语。）
be 动词、助动词、情态动词讲解（基础篇） 1、 用单数，反之用复数。 ◆ 句中含有be动词时： 肯定句：主语＋be ＋其他 否定句：主语＋be ＋not ＋其他 一般疑问句：Be ＋主语＋其他＋？ 特殊疑问句：疑问词(what / who / when / where)＋be ＋主语＋其 他＋？ I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. ★ be 动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。 变疑问，往前提，句末问号莫丢弃；变否定，更容易，be 后not 莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be 动词作谓语，它后面一般跟名词、形容词或介词短语。她个子很高。 她在教室里。她是一个高个子的女孩。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语+ 谓语+ 其他” 。 ①主语为I 或复数名词、代词时：肯定句：I / We / They / The students
＋动词原形＋其他＋。 We watch TV every night. 变否定：主语＋don't ＋动词原形＋其他＋。 We don't watch TV every night. 一般疑问句Do + 主语+ 动词原形+ 其他+ ？ Do you watch TV every night? Yes, we do. / No, we don 't. 特殊疑问句：疑问词+ do + 主语+ 动词原形+ 其他+ ？ How often do you watch TV? ②主语为单数名词或代词时：肯定句：主语+ 动词第三人称单数形式 + 其他+ 。 He watches TV every night. 否定句：主语+ doesn't+动词原形+其他+。 He doesn't watch TV every night. 一般疑问句：Does + 主语+ 动词原形+ 其他+ ？ Does he watch TV every night? Yes, he does. / No, he doesn 't. 特殊疑问句：疑问词+ does + 主语+ 动词原形+ 其他+ ？ How often does he watch TV? ★主语为单数或不可数名词，谓语要用单数第三人称，反过来，看见动词用了单数第三人称，可以推知主语是单数或不可数名词。 ( )1. How __ ______ your dad help at home? A. do B. does C. is ( )2. ______ goes bad easily in summer. A. Milk B Apples C. Cakes ③过去时的句式（当句子时态为过去时时，动词用过去式，不受主语单复数的影响） 肯定句：主语+ 过去式+ 其他+ 。 He / We got up early every morning last year. 否定句：主语+ didn't + 动词原形+ 其他+ 。 He / We didn't get up early every morning last year. 一般疑问句：Did + 主语+ 动词原形+ 其他+ ？ Did he / you get up early every morning last year? Yes, he
Be动词和助动词用法区别其实be动词也是助动词（auxiliary verbs）。 英语动词大致可分为三种：助动词（auxiliary verbs），情态动词（modal verbs），实意动词（full verbs）。 助动词（auxiliary verbs）：do，be，have。没有实意，“帮助”别的动词，表示时态，否定和提问。情态动词（modal verbs）：can，must，may。也是“帮助”别的动词，但是有自己的实意。实意动词（full verbs）：play，run，think。其他有实意的动词。 be动词可用作助动词（auxiliary verbs）：1，be+Ving：所有的进行时态，如：2，be+过去分词：被动式。 be动词也可用做实意动词（full verbs）：be[bi]v.有；在；是。 你这样想，一个句子里要有动词吧。再看看它们的名字，“be 动词”和“助动词”， 先说“be动词”，（1）这名字里有动词，说明他是动词，句子里有他就不会有别的动词（除非这些动词以别的形式出现，这是后话）了，（2）“am,is,are,was,were”叫be动词，是因为他们是be的不同形式 再说“助动词”，（1）一定要注意“助”，是帮助的意思，说明他不是动词，只是起到了辅助的作用，所以，他们就一定要与动词同时出现。[记住啊，他们离不开动词，但是动词没有他们也是可以的]
（2）did,do,does只是do的不同形式，根据你所需要的时态来选择（1）用于肯定句，否定句和疑问句 am：第一人称单数（即只与I连用），用于现在时（一般现在，现在进行，只要那时态中是现在的就行）eg:①I am a girl.一般现在时②I am eating an apple.现在进行时 ③I am going to do my homework.[be going to表将来，将来中只有这一种] is：第三人称单数，用于现在时（一般现在，现在进行，只要那时态中是现在的就行）(it就不举例了)eg:①She/He is a girl/boy.一般现在时②He/She is eating an apple.现在进行时③He/She is going to do his homework.[be going to表将来，将来中只有这一种] are：第二人称单数，所有人称复数，用于现在时（一般现在，现在进行，只要那时态中是现在的就行）eg:①You are a girl. We/You(你们)/They are girls.一般现在时②You are eating an apple.We/You(你们)/They are eating apples.现在进行时③We/You(你们)/They are going to do our/your/their homework.[be going to表将来，将来中只有这一种] was：第一人称单数，第三人称单数，用于过去时（一般过去，
助动词do/does的用法专题 助动词do与does口诀 （一）(do ) 变句型，先观察，陈述句中动用原, 一般疑问do提前，否定don’t实动前。 （二）(does) 若是主语为三单，陈述句中动变形，一般疑问也简单， does放在句子前，否定doesn’t实动前，主动出现动还原。 总结： 含有实义动词的句子，进行句子转换时应借助于助动词do/does，主语是三单(he,she,it)时用does，其他用do。否定句在动词原形前加don’t /doesn’t，一般疑问句把do/does 提前,特殊疑问句由特殊疑问词+一般疑问句。 句子类型及结构 肯定句：主语+动词+其它。主语是三单，动词用三单 I like this blue sweater. Tom likes this blue sweater. 我喜欢这件蓝色的毛衣。Tom喜欢这件蓝色的毛衣。 Tom likes English. Tom喜欢英语。 I like this blue sweater. Tom likes English. 否定句：主+ don’t/doesn’t+动原+其它 I don’t like this blue sweater. 我不喜欢这件蓝色的毛衣。 Tom doesn’t like English. Tom不喜欢英语。 I like this blue sweater. Tom likes English. 一般疑问句：do/does提前，其它照抄不变（Do /Does+主+动原+其它），一人称变二人称。回答：Yes,主+do/does. No,主+ don’t/doesn’t. Do you like this blue sweaterYes, I do. / No, I don’t. 你喜欢这件蓝色的毛衣吗是的，我喜欢; 不，我不喜欢。 Does Tom like EnglishYes,he does. / doesn’t. Tom喜欢英语吗是的，他喜欢；不，他不喜欢。
小学英语语法：助动词do 的用法 1) 构成一般疑问句，例如： Do you want to pass the CET? 你想通过大学英语测试吗? Did you study German? 你们学过德语吗? 2) do + not 构成否定句，例如： I do not want to be criticized. 我不想挨批评。 He doesn't like to study. 他不想学习。 In the past, many students did not know the importance of English. 过去，好多学生不知道英语的重要性。 3) 构成否定祈使句，例如： Don't go there. 不要去那里。 Don't be so absent-minded. 不要这么心不在焉。 说明：构成否定祈使句只用do，不用did和does。 4) 放在动词原形前，增强该动词的语气，例如： Do come to my birthday party. 一定来参加我的生日宴会。 I did go there. 我确实去那儿了。 I do miss you. 我确实想你。 5) 用于倒装句，例如： Never did I hear of such a thing. 我从未听说过这样的事情。
Only when we begin our college life do we realize the importance of English. 只有在开始大学生活时我们才理解到英语的重要性。 说明：引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。 6) 用作代动词，例如： ---- Do you like Beijing? --你喜欢北京吗? ---- Yes, I do. --是的，喜欢。(do用作代动词，代替like Beijing.) He knows how to drive a car, doesn't he? 他知道如何开车，对吧? 助动词do 的用法是我们精心为大家准备的，希望大家能够多加练习，为以后学好英语打下坚实的基础!
be动词、助动词、情态动词讲解 (基础篇) 1、be动词的用法。 英语中，be动词选用单数还是复数，要由主语来定，主语是单数，就用单数，反之用复数。 ◆ 句中含有be动词时： 肯定句：主语＋be ＋其他 否定句：主语＋ be ＋ not ＋其他 一般疑问句： Be ＋主语＋其他＋？ 特殊疑问句：疑问词（what / who / when / where）＋ be ＋主语＋其他＋？ I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall.
There are two books on the table. ★ be动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。 变疑问，往前提，句末问号莫丢弃；变否定，更容易，be后not莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be动词作谓语，它后面一般跟名词、形容词或介词短语。 她个子很高。她在教室里。 她是一个高个子的女孩。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语 + 谓语 + 其他”。 ① 主语为I 或复数名词、代词时： 肯定句： I / We / They / The students ＋动词原形＋其他 ＋。 We watch TV every night. 变否定：主语＋don’t ＋动词原形＋其他＋。
七年级英语双休日作业 班级：姓名：等级 英语句型变化总结练习 1、含有be动词am，is，are构成的句子： 变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。 变否定句时直接在am，is，are后面加not即可。例如： 肯定句:He is a student. 一般疑问句: a student? 否定句: He a student. 肯定句：We are from China. 一般疑问句: from China? 否定句：We from China 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can, may,提到句子的前面,句尾用问号即可. 变否定句时直接在can, may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句:she swim? 否定句: She swim. 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 变否定句时在主语后面加don’t / doesn’t , 谓语用动词原形。例如: 肯定句: They play football after school. 一般疑问句: play football after school? 否定句: They football after school. 肯定句：Tom watches TV every day. 一般疑问句: Tom TV every day? 否定句: Tom TV every day.
注意：变否定句时相关词的改变 肯定句变否定句时，除将谓语变为否定式外，句中其他词语也可能随之改变： 如将some改为any，too和also改为either，and改为or等：There are some birds in the tree. 树上有些鸟。 →There aren’t ______ birds in the tree. 树上没有鸟。 He likes the book, too. 他也喜欢这本书。 →He doesn’t like the book, ______. 他也不喜欢这本书。He likes singing and dancing. 他喜欢唱歌和跳舞。 →He doe sn’t like singing ______dancing. 他不喜欢唱歌也 不喜欢跳舞。补充练习： 根据句后括号内的要求，填入句中所缺的词： 1. I know the answer. (一般疑问句) ______ ______ know the answer? 2. We can see some birds. (一般疑问句) ______ ______ see ______ birds? 3. There is a computer in the house. (一般疑问句) ______ ______ a computer in the house? 4. There are some flowers on the teachers’ desk. (一般疑问句) ______ ______ any flowers on the teachers’ desk? 5. There are some apples on the tree. (否定式) There ______ ______ ______ apples on the tree. 6. I think he is old. (否定句) I ______ think he ______ old.
be动词、一般动词和助动词 一、be动词、一般动词的现在式 （1）be动词的现在式—am/are/is a.是（表状态） We are happy.—我们很高兴 b.在（表存在） She is in America.—她在美国 含be动词（am/are/is）的肯定句变成否定句时，在be动词后加not即可。 肯定句：主语+am/are/is… 否定句：主语+am/are/is+not… He is a good baseball player. 他是一个好棒球员 （否定句）He is not a good baseball player. = He’s not a good baseball player. = He isn’t a good baseball player. 含be动词（am/are/is）的肯定句变成疑问句时，将be动词拿到主语前，句尾加？即可。肯定句：主语+am/are/is… 疑问句：Am/Are/Is+主语…？ 1.That is his camera. 那是他的相机 （疑问句）Is that his camera?
2.The girl is a junior high school student. 那女孩是初中生 （疑问句）Is the girl a junior high school student? 动词开头的疑问句为一般疑问句，可用yes或no回答，而答句中的主语 （问句）Am/Are/Is+主语…？ （答句）Yes,主语+am/are/is No,主语+am/are/is not 1.Is that man your math teacher? Yes, he is./No,he is not. 2.Are you eating your lunch? Yes, I am./No, I’m not. （2）一般动词的现在式 凡是日常生活中具体的动作，如：eat-吃饭，walk-走路及抽象的动作如：like-喜欢，think-思考…皆为一般动词 a.大部分动词加s works/plays b.一般动词词尾为o/s/sh/ch时。加es go-goes/wash-washes/watch-watches c.一般动词词尾为字音+y时，去y加ies cry-cries/study-studies have和has has为have（有，吃）的单数形式 They have a lot of money.
be动词，情态动词，助动词do/does的用法区别及练习 助动词，顾名思义就是帮助动词完成疑问及否定的，本身没有什么含义。主要的助动词有be,do,will,have等，其用法详述如下： 一、⑴由连系动词am，is，are构成的句子：变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。变否定句时直接在am，is，are后面加not即可。例如： 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 画线提问: 对he提问: Who is a student? 对a student 提问: What is he? (2)was 是am,is的过去式，were是are的过去式，若句子中有以上两词时，变疑问句及否定句方法与（1）相同。 二、(1) 由情态动词can, may,will ，shall等构成的句子: 变一般疑问句时把can, may,will ，shall提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? （2）could,might,would,should是can,may,will,shall的过去式，若句子中有以上两词时，变疑问句及否定句方法与（1）相同。 三、（1）由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 变否定句时把don’t/doesn’t放在动词的前面。要注意观察动词的形式并对号入座。一般疑问句和否定句的动词三单式都要变回原型。 play-----do plays-----does 例如: 肯定句: They play football after school. He plays football after school. 一般疑问句: Do they play football after school? Does he play football after school? 否定句: They don't (do not) play football after school. He doesn’t’ play football after school. 画线提问: 对they/he提问: Who plays football after school? 对play football提问: What do they do after school? What does he do after school? 对after school提问: When do they play football? When does he play football? （2）did是do和did的过去式，变一般疑问句时把did放在句子前面. 变否定句时把didn’t 放在动词的前面, 要注意观察动词的形式并对号入座。一般疑问句和否定句的动词都要变回原型。
1、be动词的用法。 be am / is are 现在时 was were 过去时 单数复数 英语中，be动词选用单数还是复数，要由主语来定，主语是单数，就用单数，反之用复数。 ◆句中含有be动词时： 肯定句：主语＋be ＋其他 否定句：主语＋ be ＋ not ＋其他 一般疑问句： Be ＋主语＋其他＋？ 特殊疑问句：疑问词（what / who / when / where）＋ be ＋主语＋其他＋？ I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. ★ be动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。 变疑问，往前提，句末问号莫丢弃；变否定，更容易，be后not莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be动词作谓语，它后面一般跟名词、形容词或介词短语。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语 + 谓语 + 其他”。 ①主语为I 或复数名词、代词时： 肯定句： I / We / They / The students ＋动词原形＋其他＋。 We watch TV every night. 变否定：主语＋don’t ＋动词原形＋其他＋。 We don’t watch TV every night. 一般疑问句 Do + 主语 + 动词原形 + 其他 + ？ Do you watch TV every night? Yes, we do. / No, we don’t. 特殊疑问句：疑问词 + do + 主语 + 动词原形 + 其他 + ？ How often do you watch TV? ②主语为单数名词或代词时： 肯定句：主语 + 动词第三人称单数形式 + 其他 + 。 He watches TV every night. 否定句：主语+ doesn’t+动词原形+其他+。
归纳起来, do ,does 的用法有四方面: 一.用作一般的动词,均可.do是一不规则变化的动词(do ,did,done). do,据人称和单复数的不同而有字形的变化.第一第二人称,以及第一.二.三 人称的复数时,都用do . 第三人称单数时,用does( he does she does it does ) 例如: I do my homework on Sunday. You do your homework on Sunday. We do our homework on Sunday. You do your homework on Sunday. They do their homeworkon Sunday. He does his homework on Sunday. She does her homework on Sunday. 二.当助动词用,用它来构成疑问句.这时它本身没有实义,只是一个构成疑问句的符号而已.这种用法时,它随人称和数的变化规则与上述相同.只是把它放到句子的最前面(句首).例如: Do I ............... Do you ............. Do we .............. Do you ............. Do they ............ Does he ............ Does she ........... Does it ............ 三.当助动词用,与not 连用使句子构成否定句.其随人称和数的变化规则与上述相同.例如:
I do not .................. (do not 可简化为don't ,下同) You do not ................ We do not.................. You do not................. They do not................ He does not................ (does 可简化为doesn't,下同) She does not............... 四.当作助动词,本身在句子中无实义,只是加强句子中动词的语气.其随人称和数的变化同上.例如: Do write to me.(一定写信给我!) Never do I see such a fool.(我从来没见过这样的蠢才.) She does come.(她的确来了.) * * * * * * 按词性, do 还可以用作名词.其意是"欺骗";"宴会,宴请".例如: It's all a do.(完全是欺骗.) We have got a do on to-night.(家里今晚请客.)
1.be动词（am/is/are） 主语be动词（原形）be动词（过去式） I am was He/she/it is was We/you/they are were 口诀：我用am, 你用are，is用在他她它，所有复数全用are ①肯定和否定句 I am (not) from London. He is(not) a teacher. She is(not) in the dining room. My hair is(not) long. Her eyes are(not) small. ②一般疑问句 Am I a Chinese?——Yes, you are. /No, you aren’t. Is the cat fat? ——Yes, it is. /No, it isn’t. Are they American?——Yes, they are. /No, they aren’t. 表示疑问，一般回答只有两种可能Yes或No，句中没有疑问词。 如何将一个肯定的陈述句改为否定句： 1、看句中有无be动词，如有，把be动词提到句首即可。 2、看句中有无情态动词，如有，把情态动词提到句首即可。 3、如上述二者都没有，就应把助动提到句首。分四个步骤： （1）肯定陈述句中本来是没有助动词的，要加上去，位置在主语（某人/某物）后，动词前。 （2）确定助动词用do、does还是did，根据句中动词，动词是原形的助动词就用do，动词是第三人称单数的助动词就用does，动词用过去式的助动词就有did。
（3）把助动词后提到句首。 （4）原句中动词假如发生变化就要恢复成原形。 有some的要考虑是否要用any 2.助动词（do/does/did） 主语助动词（原形）助动词（过去式）否定形式I/We/you/they do did don’t/didn’t He/she/it does did doesn’t/didn’t ①.Do+非第三人称单数＋动词原形…? do/don't you/they have...?—Yes, I do/No, I don’t. ②.Does+第三人称单数＋动词原形…? does/doesn't he/she have...?—Yes, he does./No, he doesn’t. ③Did+所有主格＋动词原形…? did/didn't you/he/she/they go to school?—Yes, i did./No, I didn’t. 3.特殊疑问句 表示疑问，有疑问词开头，回答有很多种可能。常用疑问词：What、Who、When、Which、Why、Whose、How ※What do you/they/we…+动词原形？I/They/We+动词原形… What does he/she/it…He/She/It +(动词＋S)…. What did you/they/we/ he/she/it…I/They/We/ He/She/It +动词过去式Eg:What did you do last weekend? I cleaned my room. Who cleaned my room? Your mother cleaned your room. When do you go to school? I go to school at 7 o’clock. Which one is your book? The red one is my book. Why do you like this book? Because it is funny.
助动词do 的用法 1）构成一般疑问句，例如： Do you want to pass the CET? 你想通过大学英语测试吗？ Did you study German? 你们学过德语吗？ 2）do + not 构成否定句，例如： I do not want to be criticized. 我不想挨批评。 He doesn't like to study. 他不想学习。 In the past, many students did not know the importance of English. 过去，好多学生不知道英语的重要性。 3)构成否定祈使句，例如： Don't go there. 不要去那里。 Don't be so absent-minded. 不要这么心不在焉。 说明：构成否定祈使句只用do，不用did和does。 4）放在动词原形前，加强该动词的语气，例如： Do come to my birthday party. 一定来参加我的生日宴会。 I did go there. 我确实去那儿了。 I do miss you. 我确实想你。 5）用于倒装句，例如： Never did I hear of such a thing. 我从未听说过这样的事情。 Only when we begin our college life do we realize the importance of English. 只有在开始大学生活时我们才认识到英语的重要性。 说明：引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。 6）用作代动词，例如： ---- Do you like Beijing? --你喜欢北京吗？ ---- Yes, I do. --是的，喜欢。（do用作代动词，代替like Beijing.） He knows how to drive a car, doesn't he? 他知道如何开车，对吧？ do 这个词（does是第三人称单数形式），大体上从两方面来讲。 1.作为行为动词，跟其他动词一样，如study, play等。他的意思是“做”等。如： We usually do our homework in the afternoon. He does his homework in the evening. 2.作为助动词，也就是帮助主要动词构成否定和疑问等。 We don't like bananas. Do you like apples? Does he like English? He doesn't like swimming 上面有一句He does his homework in the evening.要是变成否定句就成了这个样子： He doesn't do his homework in the evening. 这里加上了助动词doesn't，而原来的主动词does变成原形do了。 作为助动词的do和does是没有词义的，它们在句中的构成一般现在时的疑问句和否定句. Do用于主语第一人称，第二人称和第三人称复数形式的句中，does用于主语第三人称单数的句中。
苏打水1. 由连系am，is，are构成的句子：变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。变否定句时直接在am，is，are后面加not即可。例如： 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 反问句: He is a student, isn't he? He isn't a student, is he? 画线提问: 对he提问: Who is a student? 对a student 提问: What is he? or What does he do? 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 反问句: She can swim, can't she? She can not swim, can she? 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 例如: 肯定句: They play football after school. 一般疑问句: Do they play football after school? 否定句: They don't (do not) play football after school. 反问句: They play football after school, don't they? They don't play football after school, do they? 画线提问: 对they提问: Who play football after school?
助动词do的用法 1）构成一般疑问句，例如： Do you want to pass the CET? 你想通过大学英语测试吗？ Did you study German? 你们学过德语吗？ 2） do + not 构成否定句，例如： I do not want to be criticized. 我不想挨批评。 He doesn't like to study. 他不想学习。 In the past, many students did not know the importance of English. 过去，好多学生不知道英语的重要性。 3) 构成否定祈使句，例如： Don't go there. 不要去那里。 Don't be so absent-minded. 不要这么心不在焉。 说明：构成否定祈使句只用do，不用did和does。 4）放在动词原形前，加强该动词的语气，例如： Do come to my birthday party. 一定来参加我的生日宴会。 I did go there. 我确实去那儿了。 I do miss you. 我确实想你。 5）用于倒装句，例如： Never did I hear of such a thing. 我从未听说过这样的事情。 Only when we begin our college life do we realize the importance of English. 只有在开始大学生活时我们才认识到英语的重要性。 说明：引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。 6）用作代动词，例如： ---- Do you like Beijing? --你喜欢北京吗？ ---- Yes, I do. --是的，喜欢。（do用作代动词，代替like Beijing.） He knows how to drive a car, doesn't he? 他知道如何开车，对吧？ 助动词be的用法 1） be +现在分词，构成进行时态，例如： They are having a meeting. 他们正在开会。 English is becoming more and more important. 英语现在越来越重要。 2) be + 过去分词，构成被动语态，例如： The window was broken by Tom.. 窗户是汤姆打碎的。 English is taught throughout the world. 世界各地都教英语。
英语中be动词用法和助动词---do 1. 由连系am，is，are构成的句子：变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。变否定句时直接在am，is，are后面加not即可。例如： 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 反问句: He is a student, isn't he? He isn't a student, is he? 画线提问: 对he提问: Who is a student? 对a student 提问: What is he? or What does he do? 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 反问句: She can swim, can't she? She can not swim, can she? 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 例如: 肯定句: They play football after school. 一般疑问句: Do they play football after school? 否定句: They don't (do not) play football after school. 反问句: They play football after school, don't they?