Exercise Have Unexpected Benefits

Exercise Have Unexpected Benefits

Along with the social life improve, people on the network dependence strengthen, then, outdoor sports will become less and less. We know that exercise can improve the heart and lungs, bones and muscles, but not attract enough attention .

In fact, exercise have unexpected benefits. For example,Fitness marathon can improve the respiratory system and cardiovascular system function of scientific practice proves, longer rhythmic deep breathing, can make human respiratory oxygen uptake amount of oxygen, if more than the usual 7 - 8 times, can inhibit the growth and reproduction of human cancer cells.

As you see,exercise is the best way of life, whether it is life or learning, have the very big help, to increase self-confidence, love life, keep fit and stay healthy, exercise of will.can be said to choose exercise, choose life.

谈谈have作助动词用法

谈谈have作助动词用法 have在现代英语中是用得较多的动词之一。它除了用作实义动词（ordinary verb）, 表示topssess （具有），to hold （保持），to experience （经验）等意义外,还大量用作助动词。现就其助动词用法作一简述： 一、帮助构成完成时和完成进行时的各种时态。例如： 1）完成时： He has finished his task. The sun had already set before we arrived at the railway station. He shall have written the article by then. 2) 完成进行时： I have been working as an interpreter for years. He told me that he had been waiting for me even since the morning. 二、帮助构成复合谓语（和不定式动词连用）。 1) have to的用法。具有语气动词的作用，表示必须履行的义务责任（obligation）, 或表示客观情况的需要，或必然性，几乎同情态动词must具有同样的意义。例如： I have to go there = I must go there. If you want to catch the first train you have to leave at six. He sees very badly, he has to wear glasses all the time. The children have to play in the streets till their mothers get home from work. In my district there is no gas laid on； people have to use electricity for every thing. be to和have to在意义上是不相同的。试比较下面两个句子： We are to finish our work at five o'clock. We have to finish our work at fine o'clock. 第一句are to finish 表示预定计划；这是大家知道的。第二句“have to finish”表示“必须在什么时候完成”，不管我们愿不愿意。 2) had to的用法。表示在过去时间里客观环境所产生的责任、任务或必然性，可用作 must的过去形式。例如： The buses were all full：I had to get a taxi. She fell ill and had to leave early. I got lost and had to ask a police man the way, When I changed my job, I bad to move to another flat. In October the expedition siled, but it had to make its way against adverse winds. 3)have to, had to常在会话中单独使用，这时不定式动词可不提及，但仍可理解。例 如： Do you have to translate the whole text into Japanese? No, you don't have to. why do you always wear dark glasses? I have to （wear them）. My eyes are very sensitive. I didn't want to stop but I had to （stop） as I needed petral （汽油）。 三、have + object + past participle 结构. 1 ）可更为简洁地用来表示下列类型句子的说法。例如： I employed someonce to do something for me.

小学英语语法：助动词do 的用法

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!

(完整版)助动词用法及练习

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。

have和has用法的区别

have和has用法的区别： 在肯定句中，I,you,we,they,或复数做主语时用have，he,she ,it或单数作主语时用has。 在疑问句和否定句中无论什么人称作主语，都用have。 例如(肯定句)：1. I have some paper. 2. You have some staples. 3. We have some stamps. 4. They have some sugar. 5. He has a ruler. 6. She has some balloons. 7. It has four legs. has some books. 例如（一般疑问句）： 1. Do you have a bike 2. Do they have any salt 3. Does he have a bike 4. Does a rabbit have four legs ? 例如（否定句）：1. I don’t have any rice . 2. We don’t have any salt . 3. He doesn’t have a pen . 4. She doesn’t have any envelopes . have和has用法的区别： 在肯定句中，I,you,we,they,或复数做主语时用have，he,she ,it或单数作主语时用has。 在疑问句和否定句中无论什么人称作主语，都用have。 例如(肯定句)：1. I have some paper. 2. You have some staples. 3. We have some stamps. 4. They have some sugar. 5. He has a ruler. 6. She has some balloons. . 7. It has four legs. has some books. 例如（一般疑问句）： 1. Do you have a bike 2. Do they have any salt 3. Does he have a bike 4. Does a rabbit have four legs 例如（否定句）：1. I don’t have any rice . 2. We don’t have any salt . 3. He doesn’t have a pen . 4. She doesn’t have any envelopes . 【 have和has用法的区别： 在肯定句中，I,you,we,they,或复数做主语时用have，he,she ,it或单数作主语时用has。 在疑问句和否定句中无论什么人称作主语，都用have。 例如(肯定句)：1. I have some paper. 2. You have some staples. 3. We have some stamps. 4. They have some sugar. 5. He has a ruler. 6. She has some balloons.

Have与 has的用法及区别

Have与has的用法及区别 have与has都是“有”的意思,但二者用法是有区别的. 在陈述句中,当主语是单数第三人称（he、she、it）时,句子的谓语是“有”时,用has；当主语是其他人称（I、you、we、they）时,句子的谓语是“有”时,用have. 例句： I \ You have an apple . We\They have some apples . He\She has a pen . 但是,在疑问句中,当主语是就单数第三人称提问或否定句时用助动词does 和does not (doesn't),然后把has 变成have 如果不是第三人称,助动词就是do ,否定式do not (don't).特殊疑问句回答照样,该是has 还是has 该是have 还是have 但是当一般疑问句以do或does开头的时候,只能回答do don’t 或者does doesn't 例句： Do you have a book yes ,I do /No ,I don't What does a cat have the cat has a , He doesn’t have any coffee. 就是第二种：have本身也可以作为助动词,(作为完成时里的助动词)本身无词义,和do 一样,has 就相当于does 在单三情况下用,主要用于构成各种时态、语态、语气以及否定和疑问结构.（那此时的have还是has就要看具体的人称而定）完成时态是have/had + done (过去分词的形式) I have finished my work, she has finished her work have you finished your work? Has she finished her work?在一般疑问句里回答直接用have/has yes,I have/ No ,I haven't Yes,she has/ No,she hasn't(因为这里have/has是助动词)

助动词have用法

助动词have用法 这篇关于助动词have用法，是笔者特地为大家整理的，希望对大家有所帮助！ 助动词have以及它的变体has, had等的主要用法如下： 1. have +过去分词，构成完成时态。如： He has left for Japan. 他已去了日本。 We’ve just done the washing-up. 我们刚洗完碗碟。 Poor Jim has just had an accident. 可怜的吉姆刚出了个事故。 I have had this car for three years. 这辆汽车我已用了3年了。 By the end of last month, they had finished the work. 上月未他们就已经完成了工作。 2. have + been +现在分词，构成完成进行时。如： I have been studying English for 8 years. 我学英语已达八年了。 The children have been having a lot of run. 孩

子们一直玩得很开心。 We had been doing business with each other for years before we quarreled. 在吵翻之前，我们多年来在业务上一直来往。 By this time next year, we will have been doing business with each other for 20 years. 到明年这时候，我们的业务住来就满20年了。 I woke up—I had been having a bad dream. 我醒了，我做了个噩梦。 3. have+been +过去分词，构成完成式被动语态。如： English has been taught in China for many years. 中国教英语已经多年。 I have been made redundant, so I’m going abroad. 我被定成了超编人员，所以我打算出国。 Thousands of pounds have been spent on the new hospital. 这家新医院花费了数千英镑。 None of my friends have been invited to the party. 我的朋友中没有一个被邀参加晚会。 All means have been used to get him to change his mind. 为了转变他的想法，所有的办法都用过了。

Have 和has的用法

Have 和has的用法 谓语动词have表示“有”，有两种形式：have和has，前者用于第一人称（I、we），第二人称（you）和第三人称（they），后者用于第三人称单数（he、she、it）或单数名词。 have/has句型与there be句型的比较：两者都表示“有”，但用法不同。前者表示所属关系，即表示“某人或某物有什么”，而后者表示存在，表示“某地有什么”。 一、用have, has填空。 1. I _ some red ink. 2. His mother an old house. 3. You _ two big eyes. 4. Their parents many friends. 5. My brother __ a nice T-shirt. 6. The doctors __ white clothes. 7. He and she __ some bananas. 8. Look, the child __ some sweets. 9. Our school twelve classroom. 10. The students many books. 11. His sister a new bike. 12. Their English teacher some nice photos.

13. Your brothers______a new bike. 14. LiMing’s mother_________two big eyes. 15. Jenny and Danny__________two black pens. 16. The dogs_______some meat in its mouth. 17. The students of Class One________a football. 18. Mary_________an old doll. 19. They _________some soup for supper. 20. Our school________a big library. 21.I a cat. 22.He a dog. 23. She long hair. 24. We a big house. 25. They a happy family.

助动词have be do 的用法

助动词have \ be\do 的用法 助动词have的用法 1）have +过去分词，构成完成时态，例如： He has left for London. 他已去了伦敦。 By the end of last month, they had finished half of their work. 上月末为止，他们已经完成工作的一半。 2）have + been +现在分词，构成完成进行时，例如： I have been studying English for ten years. 我一直在学英语，已达十年之久。 3）have+been +过去分词，构成完成式被动语态，例如： English has been taught in China for many years. 中国教英语已经多年。 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。 3） be + 动词不定式，可表示下列内容： a. 表示最近、未来的计划或安排，例如： He is to go to New York next week.. 他下周要去纽约。 We are to teach the freshpersons. 我们要教新生。 说明：这种用法也可以说成是一种将来时态表达法。 b. 表示命令，例如： You are to explain this. 对此你要做出解释。 He is to come to the office this afternoon. 要他今天下午来办公室。 c. 征求意见，例如： How am I to answer him? 我该怎样答复他？ Who is to go there? 谁该去那儿呢？ d. 表示相约、商定，例如： We are to meet at the school gate at seven tomorrow morning. 我们明天早晨7点在校门口集合。 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。

have_和has的用法

have 和has的用法 用法：I, we, you, they 和复数名词后用have；he, she, it 后用has 练习：用be动词和have, has填空 1. ______ you a boy? No, I _____ not. 2. The girl______ Jack's sister. 3. I _ some red ink （一些红墨水）. 4. His father an old car. 5. The dog _______ tall and fat（又高又胖）. 6. ______ your brother（哥哥）in the classroom? 7. You _ two big eyes. 8. Their parents（他们的父母）many friends. 9. Mike and Liu Tao ______ at school（在学校）. 10. Whose dress（谁的裙子）______ this? 11. Whose socks（谁的袜子）______ they? 12. Who ______ I? 13. My sister __ a nice skirt（一条漂亮的裙子）. 14. The nurses （护士）____ white clothes. 15. The jeans （牛仔裤）______ on the desk. 16. He and she __ some bananas. 17. Look, the boy ______ some apples. 18. Our school ___ twelve classroom.（教室）. 19. The students many books. 20. Her sister（妹妹） a new bike（自行车）. 21. Their teacher some nice pictures. 22. LiMing’s mother_________big eyes. 23. My sister's name ______Nancy. 24. You, he and I ______ from China. 25. Jenny and Danny__________two black pens. 26. Our school________a big library（图书馆）. 27. How _______ your father? 28. ______ David and Helen from England? 29. Mary_________a doll（玩具）. 30. She _______ big eyes. 含have、has的句子变否定句、一般疑问句及肯定回答和否定回答 变否定句：have → don’ t have has → doesn’ t have 变一般疑问句：have → Do …have …? has → Does …have …? 注：I / we→you my / our→your 练习：把下列句子改为否定句、一般疑问句，并作出肯定回答和否定回答。 1. I have many friends. 2. He has a computer（电脑）.

(完整版)have、has用法

一．Has/have简要说明 have的第三人称形式是has have:用于主语为I, you和所有人称复数 has：用于主语为第三人称单数[he, she,it, (Maria人名)] ※用have/has填空 1.She has along ruler and a short pencil. 2.I have two sisters and one brother. 3.This is mysister. She has big eyes. 4.We have threetoys cars and two toy buses. 5.Tom has a small nose and a wide mouth. 6.My Englishteacher has longhair. 7.Peter andMary have roundfaces. 8.I have an apple. My sister has anapple,too. 9.Lucy has short hair. 10.You have a long pencil. I have a short pencil. 二．巧思妙记 ◆动词have/has的用法： ?动词have表示“有”，肯定句中主语后；“三单”主语用has,其他人称用have;?一般疑问句容易变,does, do放句首；特殊疑问句怎么办，疑问词打前头； ?问句have用原形，这点一定要记清；否定句也不难，doesn’t, don’t 后添have. 肯定句I have… We/You/They have… He/She/It has… 否定句I do not hav e… I don’t have … We/You/They do not h ave… We/You/They don’t ha ve… He/She/It does not hav e… He/She/It doesn’t have… 一般疑问句及答语Do you hav e…? Yes, I do. No, I don’ t. Do you/they have…? Yes, we/they do. No, we/they don’t. Does he/she/it have…? Yes. he/she/it does. No. he/she/it doesn’t. （1）关于have 的否定句,一般疑问句及其回答 have的否定句在do后面加not。have的一般疑问句是在句首加上助动词”do” ,注意大小写的转换，其他的不变。（句中的“I”变为”you” ) 。 注意: “d o” 是助动词，无词义。“do” 是加上去的，不是原来句子里面的。

助动词do_的用法

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，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。

助动词do的用法

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，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。

have和has-用法

have与has都是“有”的意思,但二者用法是有区别的. 在陈述句中,当主语是单数第三人称（he、she、it）时,句子的谓语是“有”时,用has；当主语是其他人称（I、you、we、they）时,句子的谓语是“有”时,用have. 例句：I \ You have an apple . We\They have some apples . He\She has a pen . 但是,在疑问句中,当主语是就单数第三人称提问或否定句时用助动词does 和does not (doesn't),然后把has 变成have 如果不是第三人称,助动词就是do ,否定式do not (don't).特殊疑问句回答照样,该是has 还是has 该是have 还是have 但是当一般疑问句以do 或does开头的时候,只能回答do dont 或者does doesn't 例句： Do you have a book yes ,I do /No ,I don't What does a cat have the cat has a , He doesnt have any coffee. 就是第二种：have本身也可以作为助动词,(作为完成时里的助动词)本身无词义,和do 一样,has 就相当于does 在单三情况下用,主要用于构成各种时态、语态、语气以及否定和疑问结构.（那此时的have还是has就要看具体的人称而定）完成时态是have/had + done (过去分词的形式) I have finished my work,she has finished her work have you finished your work?has she finished her work?在一般疑问句里回答直接用have/has yes,i have/ No ,i haven't Yes,she has/ No,she hasn't(因为这里have/has是助动词) have 是动词原形i have,we have,you have,they have,to have...

have和has的用法

have的用法 陈述句——肯定句陈述句——否定句 I，We I，We You You have + 名词. don’t have + 名词. They They 名词复数名词复数 一般疑问句肯定回答 I，we I，we you you Do have + 名词 Yes, do. they they 名词复数名词复数 否定回答句中含有is/am/are一般疑问句变法： I，we 1、将is/am/are前提至句首，并大写 you 首字母。 No, don’t. 2、如陈述句中有I或We,变成一般疑问

they 句后要变成为You。My变成为Your。 名词复数3、将句尾“.”变成为“” 例：My brother is 、Is my brother 、Is your brother 、Is your brother tall完成 has的用法 陈述句——肯定句陈述句——否定句 He He She She has + 名词. doesn’t have + 名词. It It 名词单数名词单数 一般疑问句肯定回答 he he she she Does have + 名词 Yes, does. it it 名词单数名词单数

否定回答 He “对划线部分提问”四步骤解题法： She 1、变—将原陈述句变成一般疑问句No, doesn’t. 2、选—根据划线部分选出正确疑问词。 It 3、连—将2句+1句 名词单数4、去—将3句中划线部分去掉。 例：The apples are in the 、变—Are the apples in the box2、选—选定Where3、连—Where are the apples in the box4、去—去掉in the box 完成Where are the apples

助动词用法归纳小学

助动词用法归纳小学 -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN

助动词（Auxiliary Verb）：协助主要动词构成谓语动词词组的词。自身没有词义，不可单独使用。 主要动词（Main Verb）：是被协助的动词，构成时态和语态。 He doesn't like English. 他不喜欢英语。（doesn't是助动词，无词义；like是主要动词，有词义) 最常用的助动词有：be, have, do, shall, will, should, would 等。 基本助动词只有三个：be, do, have 他们没有词汇意义，只有语法作用，如协助构成进行时，完成时，被动态，否定句，疑问句等。 一、be 动词的用法 既可作系动词，又可作助动词，做助动词有人称和数的变化，第一人称用am,第二人称及复数用are,第三人称及单数用is， am,is 过去

式为was, are的过去式为were,它与现在分词构成进行时态和过去分词一起构成被动语态。 a. 表示时态 be+doing（现在分词）表示现在进行的动作 He is singing. 他正在唱歌。 b. 表示语态 be+done(过去分词）表被动语态 He was sent to England. 他被派往英国。 c. be+to do（动词不定式）表示计划安排命令。 We are to plant trees next week. 下周我们将要去植树。 You are to explain this 。对此你要做出解释。 二、do的用法 Do主要帮助实意动词构成否定和疑问句，后跟动词原形，有时放在实意动词前起强调作用，还可代替前文出现的动词，避免重复。Do 有人称和数的变化，第一、二人称及复数用do，第三人称及单数用does，过去式为did。 1）构成一般疑问句。 DO +主语+动词原形 +其他 I like singing 变为疑问句为 Do you like singing 2）do + not 构成否定句。主语+do +not +动词原形。 I do not want to be criticized.我不想挨批评。 He doesn't like to study.他不想学习。 Many students didn’t know the importance of English before. 过去好多学生不知道英语的重要性.

have和,has的用法

have和has的用法（专项练习） have和has与主语搭配： I She We He You have… It has… They The boy Tony and Jenny Jenny 可见，主语为第三人称单数时用has，其余人称都用have。 have / has的含义及用法： 1.作“有”讲。如：I have a bag.我有一个包。 He has a red cup.他有一个红杯子。 2.作“吃、喝”讲。如：have breakfas t (吃早饭) have tea (喝 茶) have a biscuit(吃块饼干) have a drink(喝点 水)

( A)6Tom and I got a football. A. have B.has C. are ( B )7.It got big leaves. A. have B.has C.is ( A )8.Can he lunch now? A. have B.has C.is 关于have和has的练习其实也不是很难哦，不过上课的时候有的小朋友还是有些马虎哦，那么希望通过以下的练习能够加深印象！ 1.I ____ (have) a cat. 2.He ____ (have) a dog. 3.She ____ (have) long hair. 4.We ____ (have) a big house. 5.They ____ (have) a happy family. 6.It ____ (have) a short tail. 7.You ____ (have) a good teacher. 8.Elva ____ (have) two big eyes. 9.Tom ____ (have) a red pen. 10.My mother ____ (have) a beautiful nose. 11.Cats ____ (have) four legs. 12.Dogs ____ (have) two ears. 13.My father ____ (have) a blue car. 14.Everybody ____ (have) two hands. 15.I ____ (have) a model plane.