文档库 最新最全的文档下载
当前位置:文档库 › have 和 has的用法专项练习

have 和 has的用法专项练习

have 和 has的用法专项练习
have 和 has的用法专项练习

have 和has的用法专项练习

一:读一读

用have

第一人称:I (我)、we(我们)

第二人称:you(你)、you(你们)

第三人称复数:they(他们),多个人名(Jenny and Tony, father and mother, my teachers…).

第三人称单数否定句:Jenny doesn’t have forks. He doesn’t have spoons. It doesn’t have bananas.

第三人称单数一般疑问句:Does Tony have plates? Does she have chopsticks? Does the dog have socks?

用has

第三人称单数:he(他),she(她),it(它),单个的人名(Jenny, Tony, my father…)或单个物品(rabbit, monkey, elephant, desk, pillow…)的肯定句She has a big apple. My mother has a blue skirt. My father has black pants. He has brown socks. Tony has a green jacket.

二:认一认,读一读(请分辨哪些是陈述句,括号内写1;哪些是否定句,括号内写2;哪些是一般疑问句,括号内写3。)

1. ( ) She doesn’t have forks.

2. ( ) We don’t have plates.

3. ( ) We have plates.

4. ( ) Does she have forks?

5. ( ) Does the monkey have bananas?

6. ( ) I have five skirts.

7. ( ) She has five skirts.

8. ( ) Tony has six pants.

9. ( ) Does Tony have seven pants?

10. ( ) Tony doesn’t have seven pants.

三.填一填,读一读(用have或has填空)

1. I ____ a cat.

2.He ____ a dog.

3. She ____ long hair(长头发).

4.We ____ a big house(房子).

5.They ____ a happy family(家庭).

6.It ____ a short tail(短尾巴).

7.You ____ a good teacher. 8.Jane ____ two big eyes.(大眼睛)

9.Tom ____ a red pen. 10.My mother a black book.

11. My friends ______ some watermelons. 12. The dogs ______ good friends.

13. Do they ______some bowls?

14.Does My father ______an orange jacket?

15. My father doesn’t ______a white jacket.

四:改一改,读一读(每句均有一处错误,请圈出并改正在横线上)

1. I am have a green apple.

2. Peter have a banana.

3. My brother and sister has a toy car.

4.They has got some roses.

5.Does She has twenty peaches?

6.She doesn’t has twenty peaches.

大学英语语法专项练习题及答案

人学英语语法专项练习题及答案 一、时态 1. By the end of April Peter here for three mon ths. A. will have stayed B. will stay C. stays D. has stayed 2. rm awfully sorry, but I had no alter native. I simply what I did. A. ought to have done B. have to do C. had to do D. must do 3. We our breakfast when an old man came to the door. A. just have had B. have just had C. just had D . had just had 4. Ever si nee the family moved to the suburbs last year, they better health. A. could have enjoyed B. had enjo yed C. have bee n enjoying D. are enjo ying 5. I bought a new house last year, but I my old house yet, so at the mome nt I have two houses. A. did not sell B. have not sold C. had not sold D . do not sell 6. I decided to go to the library as soon as I A. finish what I did B. fin is hed what I did C. would finish what I was doi ng D. fini shed wha t I was doi ng 7. He whe n the bus came to a sudden stop. A. was almost hurt B. was hurt h imself C. was to hurt himself D. was hurti n g himself 8. I suppose that when 1 come back in ten years' time all those o ld houses dow n. A. will have bee n pulled B. will have pulled C. will be pulli ng D. will b e pulled 9. Bob's leg got hurt the Purple Mountains. A. while he is climbi ng up B. while we were climb ing up

have-和has的用法练习题

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)大学英语语法专项练习题

大学英语语法专项练习题 一、时态 1. By the end of April Peter here for three months. A. will have stayed B. will stay C. stays D. has stayed 2. I'm awfully sorry, but I had no alternative. I simply _____ what I did. A. ought to have done B. have to do C. had to do D. must do 3. We ________our breakfast when an old man came to the door. A. just have had B. have just had C. just had D. had just had 4. Ever since the family moved to the suburbs last year, they________ better health. A. could have enjoyed B. had enjoyed C. have been enjoying D. are enjoying 5. I bought a new house last year, but I ______my old house yet, so at the moment I have two houses. A. did not sell B. have not sold C. had not sold D. do not sell 6. I decided to go to the library as soon as I ________. A. finish what I did B. finished what I did C. would finish what I was doing D. finished what I was doing 7. He _________when the bus came to a sudden stop. A. was almost hurt B. was hurt himself C. was to hurt himself D. was hurting himself 8. I suppose that when I come back in ten years' time all those old houses _______down. A. will have been pulled B. will have pulled C. will be pulling D. will be pulled 9. Bob's leg got hurt ________the Purple Mountains. A. while he is climbing up B. while we were climbing up C. while we climbed up D. while he climbed up 10. Pick me up at 8 o'clock. I _______ my bath by then. A. may have B. will be having C. can have had D. will have had 11. If you smoke in a non-smoking section people________. A. will object B. objected C. must object D. have objected 12. By the end of this month, we surely _______ a satisfactory solution to the problem A. have found B. will be finding C. are finding D. will have found 13. We __________to start our own business, but we never had enough money. A. have hope B. hope C. had hoped D. should hope 14. The gray building is where the workers live, and the white one is where the spare parts______ A. are producing B. are produced C. produced D. being produced 15. While people may refer to television for up-to-the-minute news, it is unlikely that television __________the newspaper completely. A. will replace B. have replaced C. replace D. replaced 16. It's reported that by the end of this month the output of cement in the factory ________by about 10%. A. will have risen B. has risen C. will be rising D. has been rising 17. Until then, his family___________ from him for six months. A. didn't hear B. hasn’t been hearing C. hasn't heard D. hadn't heard

小学英语:There-be-句型与have--has的区别及练习题

There be 句型与have, has的区别 1、There be 句型表示:在某地有某物(或人) 2、在there be 句型中,主语是单数,be 动词用is ; 主语是复数,be 动词用are ; 如有几件物品,be 动词根据最靠近be 动词的那个名词决定。 3、there be 句型的否定句在be 动词后加not , 一般疑问句把be 动词调到句首。 4、there be句型与have(has) 的区别:there be 表示在某地有某物(或人);have(has) 表示某人拥有某物。 5、some 和any 在there be 句型中的运用:some 用于肯定句, any 用于否定句或疑问句。 6、and 和or 在there be句型中的运用:and 用于肯定句, or 用于否定句或疑问句。 7、针对数量提问的特殊疑问句的基本结构是: How many + 名词复数 + are there + 介词短语? How much + 不可数名词 + is there + 介词短语? 8、针对主语提问的特殊疑问句的基本结构是: What’s + 介词短语? Fill in the bl ank with “have,has”or “there is , there are” 1. I________a good father and a good mother. 2. ____________a telescope on the desk. 3. He_________a tape-recorder. 4. _____________a basketball in the playground. 5. She__________some dresses. 6. They___________a nice garden. 7. What do you___________? 8. ______________a reading-room in the building? 9. What does Mike___________? 10. ______________any books in the bookcase? 11. My father_________a story-book. 12. _______________a story-book on the table. 13. _______________any flowers in the vase? 14. How many students____________in the classroom? 15. My parents___________some nice pictures. 16. _____________some maps on the wall. 17. ______________a map of the world on the wall. 18. David__________a telescope. 19. David’s friends___________some tents. 20. ______________many children on the hill. 用恰当的be动词填空。 1、There a lot of sweets in the box. 2、There some milk in the glass. 3、There some people under the the big tree. 4、There a picture and a map on the wall.

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)

have与has练习题

have/has专项训练姓名________________ 分数________________ 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. 16.Lily ____ (have) a doll. 17.Students ____ (have) many books. 18.Girls ____ (have) many skirts. 19.The baby ____ (have) no teeth. 20.They ____ (have) some fish. 二.Fill in the blank with “ have, has ” 1. I_________ a nice puppet. 2. He_________a good friend. 3. They__________ some masks. 4. We___________some flowers. 5. She___________ a duck. 6. My father____________ a new bike. 7. Her mother___________a vase. 8. Our teacher_________ an English book. 9. Our teachers___________a basketball. 10. Their parents___________some blankets 11. Nancy_________many skirts. 12. David__________some jackets. 13. My friends__________a football. 14. What do you__________? 15. What does Mike__________? 16. What do your friends___________? 17. What does Helen___________? 18. His brother________a basketball. 19. Her sister_________a nice doll. 20. Miss Li__________an English book. 三.下面我们做一些练习来巩固一下: ①根据汉语提示完成句子,使句意完整。 1. You ____ (有) two small eyes. 2. My sister ____ (有) three pens. https://www.wendangku.net/doc/c98891501.html,e here and ____ (吃) an apple. 4.Mummy,can I ____ (要) a new bag. ②下列句子均有一处错误,请圈出并改正。 1. I am have a green apple. 错:____ 改: ____ 2. Peter have a banana. 错:____ 改:____ 3. My brother and sister has a toy car. 错:____ 改:____ 4.They has got some roses. 错:____ 改:____ 四、选择题。请将正确答案的序号填在()。 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. 16.Lily ____ (have) a doll. 17.Students ____ (have) many books. 18.Girls ____ (have) many skirts. 19.The baby ____ (have) no teeth. 20.They ____ (have) some fish. Do/does用法 ①作为行为动词,表示“做”如: I always do housework. 我经常做家务。 She usually does homework in the afternoon. 她通常在下午做作业。 ②作为助动词,帮助主要动词构成否定和疑问。(do/does的否定为don’t/doesn’t)如:

英语语法专项练习题大全

英语语法练习题 名词 1. This is ___ reading-room. A. the teacher’s B. teacher’s C. teacher’s D. the teachers’ 2. Nothing was found but ___ broken. A. the room window B. the room’s window C. the room of the window D. the window of room 3. How many___ would you like? A. paper B. bread C. pieces of papers D. pieces of bread 4. He was praised for his ___. A. brave B. bravery C. bravely D. great brave 5. Please get me a new ___ when you go to town. A. clothes B. dress C. clothing D. trousers 6. There are 34___ doctors in the hospital. A. woman B. women C. woman’s D. women’s 7. Some___ are even thinner than your little finger. A. bamboo B. bamboos C. kinds of bamboo D. kinds of bamboos 8. He was born in this town and now he lives in ___. A. Building second B. Building Two C. the Building Two D. Building the Second 9. Old as he is, he has ___to do every day. A. a lot of work B. much works C. lots of homeworks D. quite a lot of homeworks 10. Jack’s room is furnished with ___. A. new furnitures B. many new furnitures C. many new pieces of furnitures D. many new pieces of furniture 11. Have you read ___newspaper yet? A. today’s B. Today’s C. the today’s D. your today’s 12. It’s not far, only ___walk from here to our school. A. a ten minutes B. ten minutes C. a ten minutes’ D. ten minutes’ 13. Last month, he wrote me ___letter. A. a 1000-word B. 1000 words C. a 1000-words D. 1000 words’ 14. He had a ___sleep yesterday. A. a good night B. a good-night C. a g ood night’s D. good-night’s 15. ___is not a long way to drive. A. Three miles distance B. Three-mile distance

关于have和has的练习题

用have 或has 填空。 1. I_________ a nice puppet. 2. He _________a good friend. 3. They__________ some masks. 4. We ___________some flowers. 5. She___________ a duck. 6. My father____________ a new bike. 7. Her mother ___________a vase. 8. Our teacher_________ an English book .9. Our teachers ___________a basketball. 10. Their parents ___________some blankets 11. Nancy_ ________many skirts. 12. David_ _________some jackets. 13. My friends __________a football. 14. What do you__________? 15. What does Mike__________? 16. What do your friends___________? 17. What does Helen___________? 18. His brother_ _______a basketball. 19. Her sister_ ________a nice doll. 20. Miss Li_ _________an English book. 用some和any填空 1. There isn’t ______ milk in the fridge. 2 .I can see ______ cars, but I can’t see ______ buses. 3. He has ______ friends in England. 4. Were there ______ trees on the farm? 5. Would you like ______ tea? No ,I’d not like ______ tea, but I’d like ______ cakes. 6. Do you want to take ______ photos? 7. Is there ______ rice in the kitchen? 8. There are ______ new buildings in our school. 9. Here are ______ presents for you. 10. Are there ______ pictures on the wall? No, there aren’t ______ pictures.

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.

(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。

初中英语语法专项练习题及答案.doc

初中英语语法专项习题1-名词82页附参考答案1. ( ) 1 She was very happy. She in the maths test. A. makes a few mistake B. made a few mistakes C. made few mistakes D. makes few mistake ( ) 2 We need some more____. Can you go and get some, please? A. potato B. potatos C. potatoes D. potatoe ( ) 3 _____are____for cutting things. A. Knife/used B. Knives/used C. Knife/using D. Knives/using ( ) 4 What big____ the tiger has! A. tooth B. teeth C. tooths D. toothes ( ) 5 Please remember to give the horse some tree___. A. leafs B. leaves C. leaf D. leave ( ) 6 -Can we have some ___? -Yes, please. A. banana B. oranges C.apple D. pear ( ) 7 On the table there are five____. A. tomatos B. piece of tomatoes C. tomatoes D. tomato 2 ( ) 1 They got much ___ from those new books. A. ideas B. photos C. information D. stories ( ) 2 He gave us____ on how to keep fit. A. some advices B. some advice C. an advice D. a advice ( ) 3 When we saw his face, we knew___ was bad. A. some news B. a news C. the news P. news ( ) 4 What___ lovely weather it is! A. / B. the C. an D. a 3 ( ) 1 -Would you like___tea? -No, thanks. I have drunk two____. A. any, bottles of orange B. some, bottles of orange C. many, bottles of oranges D. few, bottle of oranges ( ) 2 He is hungry. Give him ___ to eat. A. two breads B. two piece of bread C. two pieces of bread D. two pieces of breads ( ) 3 It really took him:___ to draw the nice horse.

七年级have-has-do-does的用法与练习题

七年级英语专项练习have/has 的用法 ①作“有”讲时,强调“所属关系”,表示“拥有”的意思。其主语常为人或物。如: My father has many new books.我爸爸有许多新书。 I have a new computer.我有一台新电脑。 ②“have+表示一日三餐的名词”,意为“用餐”。 如:have breakfast/lunch/supper吃早饭/午饭/晚饭。 ③“have+表示食品、饮料等名词”,意为“吃;喝”。 如:have bread吃面包 have eggs 吃鸡蛋 have tea 喝(一杯)茶。 ④“have+表示动作的名词”,没有固定的意思,常与表示动作的名词同义。 如:have a rest 休息一下 have a swim 游泳 have a drink (of...)喝一点(……) have a look (at ...)(朝……)看一眼 ⑤“have+表示某种活动的名词”,意为“进行,举行”。如: 如:have a class (学生) 上课have a birthday party 举行生日聚会 一.填写正确的形式。 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 neck. 7.You ____ (have) a good teacher. 8.Elva ____ (have) two big eyes. 9.Tom ____ (have) a red pen. 10.My mother ____ (have) a small 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 cat. 16.Lily ____ (have) a toy. 17.Students ____ (have) many books. 18.Girls ____ (have) nine books. 19.The baby ____ (have) two teeth. 20.They ____ (have) some apples 二.Fill in the blank with “ have, has ” 1. I_________ a nice puppet. 2. He_________a good friend. 3. They__________ some masks. 4. We___________some flowers. 5. She___________ a duck. 6. My father____________ a new bike. 7. Her mother___________a vase. 8. Our teacher_________ an English book. 9. Our teachers___________a basketball. 10. Their parents___________some blankets 11. Nancy_________many skirts. 12. David__________some jackets. 13. My friends__________a football. 14. What do you__________? 15. What does Mike__________? 16. What do your friends___________? 17. What does Helen___________? 18. His brother________a basketball. 19. Her sister_________a nice doll. 20. Miss Li__________an English book.

相关文档
相关文档 最新文档