Step 5 Do / Does 用法
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。
Eg. Do you want to be a teacher? 你想成为一个老师吗？
Do his friends go to park every day? 他的朋友们每天都去公园吗？
I don’t like him. 我不喜欢他。
Where does Tom come from? 汤姆来自哪里？
I don’t know.我不知道。
He doesn’t live here. 他不住在这儿。
由助动词do/does引导的一般疑问句
1、将一个肯定句变为疑问句时，应将do/does放在主语的前面，实义动词用原形。
例句：I/ We / You want some yogurt. →Do you want any yoghurt ?
William wants some beer.→Does William want any beer?
She likes that one. →Does she like that one?
2、变否定句时则要在句中谓语动词的前面加do not(don’t)或doesn’t。例句：I don’t want any coffee, but I want some tea .
She doesn’t like that one. →Doesn’t she like that one?
William wants some beer.→William doesn’t want any beer.
练一练：
家庭作业
一、请用动词的适当形式填空。
1._____the desk_____(have)four legs?
Yes, it does.
2._____she____(do)her homework every day?
Yes, she does.
3._____he_____(live)in Jinan?
No, he doesn't.
4. Does Danny_____(see)the apple tree?
5.---_____she_____(come)from America?---Yes, she_____.
二、选择题
1. _____ you like eating apples?
A. Do
B. Does
C. Doing
2. _____ he swim every afternoon?
A. Do
B. Does
C. Doing
3. –Does Sally like swimming?
--No, she .
A. do
B. does
C. doesn’t
4. Peter and Mary _____ milk every day.
A. drink
B. drinking
C. drinks
5. _____ they read English every day?
A. Does
B. Are
C. Do
什么时候用be动词什么时候用do和does 一：be动词的一般现在时有三种形式，即：am, is, are。 1. 如果主语是第一人称I（我）时，be动词用am。 如：I am a student. 我是一名学生。 I am 还可缩写成I'm。如： I'm David. 我是大卫。 2. 如果主语是you （你，你们）, they （他们，它们，她们）或名词复数（两个以上的人或物）时，be动词必须用are。 如：Are you twelve 你是十二岁吗 Tom and Lily are good friends. 汤姆和莉莉是好朋友。 They are at school. 他们在学校。 are与主语还可缩写。如： We are= We're， They are =They're, You are = You're。而are与 not可缩写成aren't。 如：They aren't students. 他们不是学生。但是am与not不能缩写。 3. 如果主语是单数名词、不可数名词或单数第三人称代词（he, she, it）时，be动词用is。如:My mother is a teacher. 我的妈妈是一名老师。 He is a student. 他是一名学生。 is也可与主语缩写,如: He is = He's, My mother is = My mother's等。但是This is不可缩写。而is与not可缩写成 isn't。 如:This isn't a book. 这不是一本书。 根据以上叙述我们可以把动词的用法以口诀的形式表述出来： 我（I）是am, 你（you）是are, 剩下is留给她（she）, 他（he）, 它（it）, 两个以上都用are。 二：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主要用于第一，二人称，和第三人称复数如 I， We， they， you，等。 does是用于第三人称单数如 he ，she ，it 等。初中阶段do与does用法主要有以下几种。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。
Fill in the blanks with “do ,does ,be” 1> _____ she know all the answers ? Yes , she ____ . No, she _____. 2> _____ the twins often fight ? Yes ,_____ do. No, _____ don’t. 3> _____ your dad like listening to music? Yes ,____ does . No, _____ doesn’t. 4>_____ uncle Tom wash his car everyday? Yes , ____ does . No, ____ doesn’t. 5> _____ you have a new teacher? Yes , I ______. No, I ______. 6>_____ she a teacher? Yes, she _____ . No, she _____. 7> ______ you playing ball now? Yes, I ______. No, I ______. 8> ______ the pig like to sleep? Yes, it ______. No, it _____. 9> ______ five birds flying in the sky? Yes, they _____ .No, ____ aren’t. 10> _____ your father smoking in the living room? Yes, ____ is .No, he _____.
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!
人教版七年级上册英语语法知识——助动词do和be动词的用法及区别(无答案） 助动词do与be动词的用法及区别 【知识精讲】 I．复习BE动词 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。 II 助动词的用法。 1.助动词：帮助一个句子构成否定句、疑问句，不充当任何成分和任何意义。 2.初一年级的助动词一般是do/does. 3.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+
d o和b e的练习
精品文档 一、用be动词和助动词（ do, does, did ）的适当形式填空。 1.---What______ you do last Sunday? ---I wrote to my friend. 2.—I ______ a boy. ______ you a boy?— No, I _____ not. 3.The girl______ Jack's sister. 4.---How many kites ______we have? ---We have ten. 5.The dog _______ tall and fat two years ago. 6. ______Jenny and Tony go to school on foot every day? 7. ______ your brother in the classroom? 8.How _______ your father? 9. Mike and Tom ______ at school yesterday. 10.Whose dress ______ this? 11. ______Jim have a picnic with his family every Saturday? Yes, he______. 12.Whose socks ______ they? 13.Who ______ I? 14.The jeans ______ on the desk a moment ago. 15.Here ______ a scarf for you. 16.He ______not visit a farm last National Day holiday. 17.Here ______ some sweaters for you. 18.---What ______ she ______ at the weekends? ---She usually plays games with her friends. 19.Some tea ______ in the glass just now. 20.The girl______like bread for breakfast. 21.My sister's name ______Lisa. 22.______ Mary and Helen from England? 23.They______ not like playing volleyball. 24.There ______ a girl in the room. 25.There ______ some apples on the tree. 26._______ there any apple juice in the bottle? 27.---Did you see a Beijing opera? ---No, I ______. 28.There _______ some bread on the plate this morning. 29. ______you like this magazine? 30.You, he and I ______ from China. 31.There _______ a boy, two girls, three men and ten women in the park. 收集于网络，如有侵权请联系管理员删除
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。
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。
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.)
助动词do \ does \ did 和be动词am \ is \ are 用法的区别 助动词do \ does \ did do是原形，用于一般现在时态中的第一二人称和第三人称的复数（I,you,we,they）； does是do的第三人称单数形式，用于一般现在时态的第三人称单数（he,she,it，姓名）；did是do的过去式，用于一般过去时态的任何人称（I,you,he,she,it,we,they）。 不管怎样，跟在这三个词后面的动词都必须为动词原形。 do \ does \ did+ V.（动词原形） 例如： Do you like meat\ bananas\fish\apples? No,I don`t. Does he like apples? No,he doesn`t. He does like apples. like就是原形 Where did he go yesterday? 他昨天哪儿了？ Did you study English? 你们学过英语吗？ 系动词（be动词）am \ is \ are be是系动词,又称be动词,包括am、is、are三个。 am用于第一人称单数；(I) 第三人称单数用is；(he\she\it) 其他人称全部都用are。(we \they\ you\ 、、、) was （am \ is 的过去式） wasn’t were（are 的过去式） weren’t 练习题： ______she like drinking? ________they play football? ______she beautiful? ________your dog walk in the zoo? ______she come from China? He ________ like pears. ______she from China? _______ your cats eat fish? ______ he watch TV at night? _______ you go to school everyday? ______ we have a good teacher? I ________ have a watch. ______you a student? , .（否定回答） There ______ many boats on the lake. Children ______ happy yesterday. Amy ______ hungry yesterday. ______ they young then? ______ he tall then? , .（否定回答） ______ it sunny? , .（否定回答） ______ it windy yesterday ______ Beijing? , .（否定回答）______ she ______ ______ zoo then? , .（否定回答）
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。
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? 对 play football提问 : What do they do after school? 对 after school提问 : When do they play football? 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?
一．找朋友。do does He I she we it you they Jack and Tom a dog 二．选词填空。 1. [Do/Does]______ he watch TV at night? Yes, he . 2. [Do/Does]______ you go to school everyday? No, I . 3. [Do/Does]______ Jack and Peter like apples? 4. [Do/Does]______ Tina go swimming on Sunday? 5. [Do/Does]______they play football? Yes, they [do/does] 6. [Do/Does]______ we have a good teacher? Yes, we [do/does] 7. [Do/Does]_____ they jump rope ? No, they [do not/does not]. 8. [Do/Does]_____your dog walk in the zoo? 9. [Do/Does]____ I have a big nose? No, you _____[do not/does not] 10. [Do/Does]____ your cats eat fish? Yes, they _____.[do/does]. 11. [Do/Does]_____ their mothers go shopping? No, they ____[do not/does not]. 12. I ___[do not/ does not] speak Japanese. [Do/Does] _____you speak Japanese? 三、改错。 1、The dog have a long tail. ( ) ________ A B C 2、His father and mother has a son. ( ) ________ A B C 3、The U.K.’s flag have stars and stripes. ( ) ________ A B C
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?
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?
Do 与Does的用法 作为助动词的do与does就是没有词义的,它们在句中的构成一般现在时的疑问句与否定句。 三单用does,复数用do ●询问动物就是否喜欢什么句型: Do snakes like music? 【复数,用do提问,they答】 肯定回答: Yes, they do、 否定回答: No, they don’t、 Does snake like music? 【单数,用does提问,it 答】 肯定回答: Yes, it do、 否定回答: No, it don’t、 ●询问别人就是否经常干某事句型:Do you often…? 您经常干什么不？ 回答:Yes, I do/ No, I don’t、 例:Do you often play games? 您经常玩游戏不？ Yes, I do/ No, I don’t、 ●询问别人就是否想要干某事句型:Do you want to +动词原形? 您想干什么不？肯定回 答:Yes, I(we) do/ Yes, please、 否定回答:No, I (we) don’t/ No, thank you
例:Do you want to drink a coffee? 您想喝一杯咖啡不？ Yes, I(we) do/ Yes, please、 No, I (we) don’t/ No, thank you 练习题: 1、What__you need for breakfast? Some milk and an egg、 2、I__want any juice、I want some milk、 3、Do Ben and you like vegetables? No,we___、 4、How__they go to school?By underground、 5、__your friend have lessons every day?No,he__、 6、What__your father do? He's a shop assistant、 7、Tom,__make a noise in class,please、 8、Kitty__do her homework at school、She___it at home、三将下列句子改为否定句与一般疑问句 1、I do my homework at home、 否定句: 一般疑问句: 2、We have a picnic on Sundays、 否定句: 一般疑问句: 3、Ben rides his bicycle at four o'clock、
系动词Be(am, is, are)的用法 一、请记住以下口诀： 我用am，你用are，is连着他，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。 二、Be动词在一般过去时中的变化： 1．am 和is在一般过去时中变为was。（was not = wasn’t） 2．are在一般过去时中变为were。（were not = weren’t） 3．带有was或were的句子，其否定、疑问的变化和am,is, are一样，即否定句在was或were后加not，一般疑问句把was或were调到句首 am,is are 都属于be动词，be是他们的原型 be动词的一般现在时有三种形式，即：am, is, are。 1. 如果主语是第一人称I（我）时，be动词用am。 如：I am a student. 我是一名学生。 I am 还可缩写成I'm。如： I'm David. 我是大卫。 2. 如果主语是you （你，你们）, they （他们，它们，她们）或名词复数（两个以上的人或物）时，be动词必须用are。如：Are you twelve? 你是十二岁吗？ Tom and Lily are good friends. 汤姆和莉莉是好朋友。 They are at school. 他们在学校。 are与主语还可缩写。如：We are= We're，They are =They're, You are = You're。而are与not可缩写成aren't。 如：They aren't students. 他们不是学生。但是am与not不能缩写。 3. 如果主语是单数名词、不可数名词或单数第三人称代词（he, she, it）时，be动词用is。 如:My mother is a teacher. 我的妈妈是一名老师。 He is a student. 他是一名学生。 is也可与主语缩写,如: He is = He's, My mother is = My mother's等。但是This is不可缩写。而is与not可缩写成isn't。如:This isn't a book. 这不是一本书。 根据以上叙述我们可以把动词的用法以口诀的形式表述出来： 我（I）是am, 你（you）是are, 剩下is留给她（she）, 他（he）, 它（it）, 两个以上都用are。 be动词am,is,are,如何正确使用它。我用am,你用are,is用于他、她、它。以上主语是单数. 复数主语全用are。指示代词作主语,This,that用is,These,those要用are。若是变为否定句,Not系动词后面加。若变一般疑问句,句首A m,Is,Are,句末问号莫忘加。回答一般疑问句,Yes,或N o简回 do和does的用法 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。