七年级可数不可数名词知识总结

1、可数名词VS不可数名词一、可数名词单数变复数1.规则变化词形特点构成方法以日例词大多数名词词尾加-s清辅旨后读/s/, 浊辅音和元音 后读/z/cat-cats bag-bags bee-bees以 s/x/ch/sh 等 结尾词尾加-es读/iz/class-classeswatch-watches以辅音字母+y 结尾变y为i 再加-es读/iz/family-families baby-babies以f/fe结尾变f/fe为v 再加-es读/vz/leaf-leaves wife-wives life-lives knife-knives注(1)：以元音字母+y结尾的名词变复数直接加-s,

2、例：toy f toys day days boy boys key keys注(2):以字母o结尾的单词，一般名词直接加-s,例：photo f photos piano pianos zoo zooskilo f kilos radio radios*但在中学阶段，有三个以。结尾的单词，其后要加-es,例：hero f heroqs potato potatoes tomato tomatoes.初中阶段不规则变化单词：tooth-teeth ; foot- feet; goose-geese; man- men ; woman-women;child -children; sheep -

3、 sheep ; deer- dee；r Chinese Chinese. 复合名词变复数(1)一般的复合名词，只把中心词(一般是第二个名词)变复数：apple tree apple trees; pencil box pencil boxes(2)由man和woman构成的复合名词，二者均变复数：man doctor - men doctors; woman teacher - women teachers二、不可数名词指不可以用数目来计算也不可以分成独立个体的名词。不可数名词通常包括:物质名词 如milk、water、ink抽象名词 如love、peace不可数名词通常只有一种形式，没有单

4、复数之分。三、 可数名词与不可数名词的区别可数名词前可加不定冠词a/an,不可数名词不能。以辅音音标开头的单数可数名词前加 a,如：a book, a pen,以元音音标开头的单数可数名词前加an， 如： an egg, an hour注：有时 a/an 后面紧接的不是单数名词，而是a /an +形容词+单数名词的形式。这时判断用a还是an,要看形容词开头字母的发音，而不是看名词。如：a man - an English man, an elephant - a young elephant可数名词前可直接加数词， 不可数名词前需加名词短语修饰。one book, two books, thr

5、ee factories, a hundred students；a cup of tea, two cups of tea, a glass of milk, two glasses of milk可数名词表示“一点儿”用 a few, “大量”用 many:a few apples, many students, a few pens, many pencils不可数名词表示“一点儿”用 a little, “大量”用 much:a little water, much milk, a little money, much meat但可数名词与不可数名词都可用a lot of/ lots

6、of表示很多，都可用 some表示一些，如：some apples, some milk,a lot of students, lots of pencils, a lot of milk, lots of meat提问“有多少” ：可数名词用 How many + 可数名词复数+一般疑问句：How many books do you have?How many pencils are there?不可数名词用 How much + 不可数名词 + 一般疑问句：How much milk do you have?How much meat is there?注：询问价钱，可数名词与不可数名词都用 How muchHow much is + 不可数名词/可数名词单数How much are + 可数名词复数/两种东西以上How much is your coat?How much is the meat?How