可数名词和不可数名词
名词是所有事物的名称,包括人、物及抽象概念。名词分为普通名词和专有名词两大类。名词在句子中作主语,宾语或表语等。
一、可数名词(Countable Nouns): 一般来说个体名词和集体名词可以用数目来计算,称为可数名词。可数名词有单数和复数两种形式。
1、名词单数变复数规则如下:
◆一般情况直接在词尾加s。
如:cat—cats  bag—bags   day—days
五大金刚(s, sh, ch, x,o)结尾的词,要es。
如:class—classes    match——matches  box-----boxes
dish ---- dishes    bus --- buses        peach --- peaches
以辅音字母y结尾的词,要yi再es。
: party----parties(晚会)     city----cities(城市)story----stories(故事)
  family---families(家;家庭)  baby --- babies(婴儿)
如果是元音加y结尾的词,则直接加s。
如:boy---- toys(男孩) monkey----- monkeys(猴子) key---- keys(钥匙)
f fe结尾的词, ffe v, es。
: wife ----wives(妻子) knife --- knives(刀子)  leaf---leaves(叶子)
以辅音字母o结尾的词(有生命的词),常加es。
: tomato→tomatoes(西红柿)potato→potatoes(土豆)
hero→ heroes(英雄)
◆以元音字母o结尾直接的词(没有生命的词),只s。
: radio→radios(收音机)  zoo→zoos(动物园)
piano→pianos(钢琴) photo→photos(照片)
◆一些不规则变化:
man--men(男人) woman-women(女人) tooth---teeth(牙齿)
goose---geese(鹅) foot---feet(脚) child--children(小孩)
mouse-mice(老鼠)  oxoxen(公牛)
单复数同形的词:
deerdeer(鹿) sheepsheep(绵羊)
ChineseChinese(中国人)JapaneseJapanese(日本人)
二、不可数名词(Uncountable Nouns)
1、不可数名词不能用数字计算所以它通常只有单数形式。 
2、不可数名词表示数量时,可以用量词来表达(量词有复数形式)其结构是数词+量词+of+名词。
如:a bottle of water(一瓶水)  two cups of tea(两杯茶)
three pieces of paper(三张纸)
3、不可数名词的类别:
食物:salt(盐) bread(面包)rice(米饭)beef(牛肉)
meat(肉)pork(猪肉) butter(黄油)cream(奶油)
液体:water(水)juice(果汁) milk(牛奶) coffee(咖啡)
Tea(茶) coke(可乐)  oil(油)wine.
表示自然现象:snow(雪) ice(冰块)rain(雨)air(空气)
其他:money(钱) news(新闻)homework(家庭作业)
housework(家务) advice(意见)information(信息,资料)
time(时间) work(工作) room(空间) music(音乐)
Weather(天气)space(空间)
注意:下列词语在不同含义下词性的不同。
chicken    鸡肉(不可数名词)        鸡(可数名词)
fish      鱼肉(不可数名词)        鱼的种类(可数名词)
room    空间(不可数名词)        房间(可数名词)
glass    玻璃(不可数名词)        杯子(可数名词)
paper    纸张(不可数名词)        试卷(可数名词)
experience  经验(不可数名词)      经历(可数名词)
相关练习
1、单项选择。
(    )1The deer has four ______.
A. foot    B. feet    C. feets    D. foots
(    )2Her two brothers are both ______.
A. policeman    B. policemans    C. policemen    D. policemens
(    )3There are four _____ and two ______ in the group.
A. Japanese, Germen    B. Japaneses, Germen   
C. Japanese, Germans
(    )4Two ______ would come to the village.
      A.woman-doctors    B. women doctor   
C. women doctors    D. woman doctors
(    )5Can you see nine _____ in the picture?   
A. sheep    B. dog    C. pig    D. horse
(    )6The _____ has two ______.
A. boys, watches    B. boy, watch   
C. boy, watches  D. boys, watch
(    )7The boy often brushes his _____ before he goes to bed.
A. tooth    B. tooths    C. teeth    D. teeths
(    )8The Japanese ____ will not leave China until she finishes her study.
A. woman    B. women    C. man    D. men
(    )9There are lots of _____ in the basket on the table.
A. tomatos    B. tomato    C. tomatoes    D. tomatoss
(    )10. The cat caught two ______ last night.
weight是可数名词吗    A. mouses    B. mice    C. mouse    D. mices
(    )11.The boys have got      already.
A. two bread        B.  two breads 
C. two pieces of bread  D.  two piece of bread
(    )12. The old man wants        .
A. six boxes of apples  B. six boxes of apple 
C. six box of apples    D. six boxs of apples
(    )13. There      some      in the river.
A. is, fish  B. are, fishes   C. is, fishs     D. are, fish
(    )14. Our English teacher often gives us ______in English by e-mail.
A. some good information    B. some good informations 
C. good informations        D. a good informatio
(    )15.I would like to have ______.
A. two glasses of milk      B. two glass of milk 
C. two glasses of milks      D. two glass of milks
(    )16.What are you listening to, Jack? ______or______?
A .Music, a news  B. Music, news 
      C. Musics, news    D. Music, newes
(    )17.I have ______to do on Sundays.
A. many housework    B. much housework   
C. many houseworks    D. much houseworks
(    )18. Many farmers have got lots of _____and got much money by selling the______.
A. cow, beef  B. cows, beef    C. cow, beefs  D. cows, beefs
(    )19.---Would you like some______?
        ---Oh, yes, just a little.
A. milk    B. apple    C. pears      D. news
(    )20.How wonderful! The ______is made of______.
A. house, glass    B. house, glasses   
C. houses, glass    D. houses, glasses