名词的所有格名词在句中表示所有关系、所属关系、动作执行者及动作承受者等意义时常需用所有格形式。
名词所有格也称为属格、主格，它主要包括\'s所有格、of所有格和双重所有格三种表现形式。
一．'s 所有格的用法例如：Jim's bed, the man's wife, children's toys, the fox's tail例如：the students' books, Teachers' Day, my boss' office, a girls' dormitory例如：today's newspaper，five minutes' walk，a ton's weight，如：Joan and Jane's room（房间属二人共同所有）Joan's and Jane's room（指Joan和Jane各自的房间）an hour and a half’s walk （步行一个半小时的路程）（1）表示诊所、店铺或某人的家等地点名词，其名词所有格后的被修饰语常常省略。
例如：I met her at the doctor's（office）．我在诊所遇见了她。
He has gone to the tailor's（shop）．他到服装店去了。
She went to Mr．Black's（house）yesterday．她昨天到布莱克先生家去了。
（2）名词所有格所修饰的词，如果前面已经提到过，往往可以省略，以免重复。
例如：Whose pen is this？It's Tom's．这是谁的钢笔？是汤姆的。
The bike is not mine，but Wang Pinpin's．这辆自行车不是我的，是王品品的。
二．of 所有格的用法--- of所有格由of加名词构成，其用法归纳如下：例如：a map of the world, the story of a hero, the windows of the roomthe sticks of the blind 盲人的拐杖例如：the very long and graceful tail of the black cat 黑猫的又长又美的尾巴例如：the children of the family 那家的孩子们the son of a poor peasant＝a poor peasant's son 一个贫农的儿子例room number，tooth brush三．双重所有格及其用法's所有格和of所有格两种所有格形式结合在一起，构成"of＋所有格"形式，即双重的所有格。
它通常表示部分观念，即全体中的一部分，在意义上与"one of．．．"相似，它主要修饰of短语之前的那个名词。
此外，双重所有格与指示代词连用时，常带有感情色彩，如赞赏、不满、厌恶等。
它的主要形式如下：例如：a good friend of mine 我的一个好朋友an interesting story of his 他的有趣的经历例如：He is a friend of my sister's．（＝one of my sister's friends）Look at that long nose of Jack's．看杰克的那个长鼻子。
（感情色彩）试比较：a picture of Xiao Zhang 小张（本人）的照片a picture of Xiao Zhang's 小张（具有的照片中）的一张照片1．不定冠词、数词、某些不定代词（some，any，many，no，few等）以及which 等限定词，一般不与形容词性物主代词或's所有格等一起放在名词前修饰名词，而采用of所有格或双重所有格形式。
例如：most of the students 学生中的大多数three of them 他们中的三个人I have read some books of his．我读过他的一些书Which book of Qiong Yao's have you read？你读过琼瑶的哪一本书？四．'s所有格、of所有格和双重所有格三者之间的细微区别请仔细比较下面三句话：1．She is Mary's brother's friend．2．She is a friend of Mary's brother．3．She is a friend of Mary's brother's．1句用的是's所有格，侧重说明她和Mary的哥哥是朋友关系，突出friend一词。
2句用的是of所有格，侧重说明她和Mary的哥哥是朋友关系，强调突出了Mary's brother。
3句用的是双重所有格，侧重说明Mary哥哥的朋友不止是一个，她只是其中的一个。
巩固练习：1.March 8th is __________Day. (woman).2.Taking twenty __________(分钟) exercise every day is good for your health.3.The shop sells ____________(妇女) handbags.4.Teachers in western countries have a __________(三个月的) holiday in a year.5.I’ll give my English teacher a card for ____________Day. (teacher)6.It’s only ten __________walk from the station to the hotel. (minute)7.It’s an __________(hour) ride from here to the museum.选择填空：1．----How’s Joy’s skirt?----Her skirt is more beautiful than ________.A.her sister’s and KateB.her sister and KateC.her sister and Kate’sD.her sister’s and Kate’s2．This is _______ room. The twin sisters like it very much.A.Lucy’s and Lily’sB.Lucy’s and LilyC.Lucy and Lily’s3．In ______ time, those mountains will be covered with trees, too.A.few yearsB.a few years’C.a few yearD.a few year’s4．We will have a ___________holiday after the exam.A. two monthB. two–monthC. two month’sD. two–months5．Did you hear the ___________report?A. policemenB. policemen’sC. policemens’D. policemens6．It’s about __________walk from my home.A. ten minuteB. ten minutes’C. ten minute’sD. ten minutes7．This is my dress. That one is ______________.A. MaryB. Mary’sC. sisterD. mother8．Every morning Mr. Smith takes a ________ to his office.A. 20 minutes walkB. 20 minute’s walkC. 20-minutes walkD. 20-minute walk 9．Where is ___________ sweater ? I can’t see it.A. LucyB. LucysC. Lucy’s10．__________ mothers made them have piano lessons.A. Peter and AnneB. Peter’s and Anne’sC. Peter’s and AnneD. Peter and Anne’s11．The room on the right is ________.A. herB. sheC. Lucy’sD. Lucy12．We’ll have a ____________ holiday. What about going to the West Lake?A. two daysB. two-dayC. two-daysD. two-days’（两天的假期：two days’ holiday/two-day holiday）13．The market isn’t far from here. It’s only ___________ bicycle ride.A. half an hours’B. half an hour’sC. half an hourD. an hour and a half 14．Where’s your father ? At _________.A. Mr Green’sB. Mr. GreenC. the Mr. Green’s15．The twin brothers always put small presents in ___________stockings on Christmas Day.A. each other’sB. each otherC. each othersD. each others’16．My father will have a _________ holiday next month. He’ll take me to Qingdao.A. ten daysB. ten days’C. ten-daysD. ten day’s17．Where have you been these days?I have been to Bei Daihe with a friend __________.A. in ChineseB. of JapanC. of American’sD. from Canada18．When we saw the film Hero, I sat between Ted and Ben. That is to say my seat was between ____________.A. Ted and BenB. Ted’s and BenC. Ted and Ben’sD. Ted’s and Ben’s19．It is said that SARS has killed more than _______________ people worldwide.A. three hundredsB. three hundreds’C. three hundred’sD. three hundred20．Kate won the _______ race in the summer sports meeting.A. 100-metreB. 100-metresC. 100 metreD. 100 metre’s (同12题) 21．Whose bike is it ? It’s ____________.A. JohnB. John’sC. Johns’D. Johns22．I’ll give you ________to finish the work. OK.A. two week’s timeB. two weeks’ timeC. two week timeD. two weeks time23．________ desk is the cleanest in the classroom.A. Ann’s and TomB. Ann and Tom’sC. Ann and TomD. Ann’s and Tom’s24．My pen is black. _________ is blue.A. KatesB. KateC. Kate’s25．Is this your room? No, it’s _________room.A. the childrenB. the children’sC. of the childrenD. the childrens’26．Who is the man in the blue car? He is __________ father.A. Kate’s and Mary’sB. Kate and Mary’sC. Kate and MaryD. of Kate and MaryAnswers:1－5 DCBBB 6－10 BBDCB 11－15 CBBAA 16－20BDDDA 21－26 BBBCBB1.Women’s2. minutes’3. women’s4. three months’5. Teachers’6. minutes’7.hour’s。