『只有单数形式』
1.物质名词或总称名词，若表示不同的种类或者特定含义，在这种语义下是可数的：
*Yogurt(酸奶) contains a higher percentage of lactic acid than other fermentend milks(发酵乳品).
*Read the label on food products. this information will tell you how nutritious the foods are.
2.抽象名词具体化，可数 ：
knitting(针织) is an art.
Did you hear a noise just now.
④在以man和woman修饰时，这两个词要连同主体词儿一起变:
Man, servant, men servants Woman doctor- women doctors
⑤Man woman作定语修饰复数时需变为复数形式。而girl,boy做定语，修饰复数时则不变。
two men doctors，five women teachers，four boy friend，three girl students.
修饰词
既可修饰可数名词，又可修饰不可数名词的修饰词:
some;a lot of;lots of
plenty of; enough; most
♤只修饰可数名词的修饰语 :
few;a few
several;many
a good many;a number of
a large number of;(large) number of
♢只修饰不可数名词的修饰语 :
little; a little; much
a good deal of;a bit of
little knowledge(一无所知)
a great deal of waste
不可数名词的度量
①piece:A piece of news,Several piece of furniture
②Bottle cup drop glass: A glass of milk,Several drop(滴) of blood
不可数名词不能被a/an修饰
不可数名词不能被基数词修饰
其他
♤只有复数的名词
两部分组成的工具或者是服装:jeans,scissors(剪刀):
That's a nice pair of pants
♤单形复义的名词
①people(人们:不可数，民族:可数)，person(人)
The Chinese are an industrious(勤奋的) people(民族).
②police(警察👮)
Why don't you ask a policeman?
③the+形容词:一类人
The rich are becoming richer
名词的所有格
of 结构
主要是用于无生命的名词
N1+of+N2
①当有生命的名词后面接短语或从句修饰时也用of属格
What is the name of the boy sitting next to her?
I took the advice of an old man whom army during a journey(旅途).
②表达同位关系:
The continent of Africa(非洲大陆)
The habit of smoking(抽烟的习惯)
③表达所属关系：
The opinion of the majority(大多数人的意见 )
④表达动宾关系(有生命)
John's murder(谋杀) of a rich man 约翰杀了富人
A rich man's murder of John 富人杀了约翰
