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注意： 可数名词也可用量来表示， of 后用复数
* There are two bags of clothes over there.
* We have five boxes of apples.
4.有些可数名词或不可数名词在一定情 况下可相互转化，同一个词，但意思不同
(1) glass(玻璃)– a glass(玻璃杯) paper(纸) – a paper(报纸) work(工作) – a work(著作) room(空间) – a room(房间)
3.常用a piece of, a cup of, a glass of,a bottle of等来表示不可数名词的量,单复数 表现在of 前面的名词上，而 of 后始终是单
数
*There is a piece of paper in the book.
*Three glasses of orange are on the desk.
词都要变成复数
a man doctor – men doctors a woman teacher – women teachers
6.常以复数形式出现的名词
people clothes police
trousers
glasses
这些名词作主语时，注意它们的谓语用 复数
* My clothes are newer than yours.
(2) fruit(水果) – fruits (各种水果) fish(鱼) – fishes(各种鱼) hair(所有头发) – hairs (几根头发) time(时间) – times(时代)
名词的一般用法 ★名词做定语
1.修饰另一名词时,一般用单数
* He has two pencil-boxes.
* There are three banana trees over
there. 2.man woman用做定语时,应与后面的名
词保持数的一致
*We need a man teacher.
*They are all women workers.
3.sports,clothes做定语时,仍用复数形式
名词的单数形式
一般可用a来修饰 * a car *a book 在元音发音开头的单词前用 an * an elephant
* an apple 请区别：a useful machine
名词的复数形式 1.复数形式的构成方法 (1) 一般在复数名词后加“s”/s/or/z/
* dog – dogs * book – books (2) 以s、x、ch、sh结尾的名词加 “es”/iz/
2.特殊变化的单词 (1)单复数同形
Chinese – Chinese fish – fish Japanese – Japanese sheep – sheep (2)变元音字母oo为ee tooth – teeth foot – feet
3.变man为 men man – men woman – women policeman – policemen Frenchman – Frenchmen
请区别：German(德国人) – Germans 4. 其它形式
child – children mouse – mice
5.一些合成名词的复数构成分两种情况 (1)将中心词变为复数
girlfriend – girlfriends grandchild – grandchildren (2) man,woman 构成的合成词，每个名
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名词
表示人、事物、地点的 名称或者抽象概念的词 分为专有名词和普通名词
专有名词
表示个别的人、事物、地点等专 有的名称。专有名词第一个字母要大 写
* Baidu Nhomakorabeaucy
* China
* the Summer Palace
普通名词
分为可数名词和不可数名词 ★可数名词
表示人、事物、地点等的名称。 可数名词有单数和复数两种形式之分
★不可数名词
物质名词和抽象名词属于不可数名词如: water，rice，fish，meat 等。
特别记住： work chalk time space music money weather cotton homework wood information news medicine
1.不可数名词无复数，作主语时常看成单
* The police often come here.
7.可用how many，many，a few，few， any，lots of, some，a lot of 等修饰可
数名词复数
*There are a few people in the park.
*How many knives are there in your pencil-box?
数
*Some bread is over there.
*No news is good news. 2.常用how much, much, a little, little, a lot of, some, any等来修饰不可数名词
*They had much money.
*He does little housework at home.
*box – boxes *watch – watches
(3)以辅音字母加y结尾的名词,变y为i加 “es” /iz/
* country – countries * factory – factories 请区别：如果是元音字母加y 结尾的名词 则只须加“s” * boy – boys * monkey – monkeys
(4) 以o结尾的名词加“s” /z/ * radio – radios * zoo – zoos 只有 potato tomato加“es”构成复数 potato – potatoes tomato – tomatoes
(5) 以f、fe 结尾的名词,变f、fe 为v再加 “es” /vz/
* half – halves * shelf – shelves *knife – knives * leaf – leaves