1.no(没有)=not a或not any,通常用作定语，可以修饰单数名词或复数名词，也可以修饰不可数名词。
2.no one(=nobody)指人时，意思是“无人”“没有人”，永远用单数。
3.none不定量，意为“一个也没有"，用作名词时，在句中一般作主语或宾语。none代替不可数名词作主语时，谓语动词用单数形式;如代替可数名词作主语，谓语动词可用单数或复数形式。例如:
He has no(=not a)brother.他没有兄弟。
She knows no(=not any)Chinese.她不懂汉语。
None of the stories are( is ) interesting.没有一个故事有意思。
No one( Nobody) knows him here except Tom. 除了汤姆，这儿没人认识他。注意:
①在回答how many或how much引出的问句时，常用none来表达“一个也没有"的意思。例如:
一How many people are there in the room?
屋里有多少人?
一None. 一个也没有。
②在回答“有没.....”或“谁.....”的问句时，如果想回答“没有”，就用no one。例如:
--Is there a foreign girl in your class?
你们班里有外国女孩吗?
-No one.没有。
-Who has taken away my bike?
谁把我的自行车拿走了?
- No one.没人拿。
练一练Exercise :
给下列各题选出一个最佳答案。
1. As we were asleep,（）of us heard the sound.
A both B. all;none
C. all;no one D. both;no one
2. The boy wants to eat some fish, but there is（）left.
A nothing B. no one C. none D. one
3.The teacher said（）can live without air or water.
A. none
B. no one
C. not one
D. not everyone
4. Some people would rather ride bicycles as bicycle riding has（）of the trouble of
taking buses.
A .nothing
B. none
C. some
D. neither
5. There is （）water in the glass.
A. no B. none C. nothing D. no one
6. -Who is in the classroom?
A. None
B. Nothing
C. Not one
D. No one
7. - How much money is left?
A. None
B. Nothing
C. No little
D. No one
8. -What did you see?
A None
B. Nothing
C. No one
D. Not much
答案Key:1.B 2. C 3. B 4.B 5. A 6. D 7.A 8.B
