BOTH表肯定,它不能用在表示否定的句子,是吗,

oth,either,neither的用法
2007-11-1 15:40
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一、辨析
1.both两者.如：
I like them both.
我喜欢他们两个.
2.either也（不）.用于否定句中.如：
I don‘t like fishing,David doesn’t like fishing,either.
我不喜欢钓鱼,大卫也不喜欢.
3.neither也不.用于肯定句,表示否定含义.如：
He can‘t swim,and neither/nor can I.
他不会游泳,
二、相关链接
1.both… and…表示肯定概念；neither… nor…表示否定概念.如：
Both he and I are right.
我和他都对.
Neither he nor I am right.
我和他都不对.
2.either用于否定句与neither（nor）用于肯定句意思相同.有时,含有either与neither（nor）的句子可用neither… nor…来改写.如：
Jim doesn‘t like football.
Tom doesn‘t like football,either.
=Jim doesn‘t like football.Neither （nor）does Tom.
=Neither Jim nor Tom likes football.
吉姆和汤姆都不喜欢足球.
either… or…在否定句中意为“既不……也不……”,同neither… nor….如：
He can‘t speak either English or Chinese.
=He can speak neither English nor Chinese.
他既不会说英语,也不会说汉语.
3.both用于否定句时是半否定,在全否定时用not either或neither.如：
I don‘t know both his teachers.
他的两位老师我并非都认识.（半否定）
I know neither his teachers.
=I don‘t know his teachers either.
他的老师我都不认识.（全否定）
4.both… and…,too,so用于肯定句与neither … nor…,either,neither （nor）是相反的.如：
Susan likes playing the violin.
Shirley likes playing it,too.
=Susan likes playing the violin,so does Shirley.
=Both Susan and Shirley like playing the violin.
苏珊和雪莉都喜欢拉小提琴.
巩固练习：
1.—Can I park my car here?
—Yes,you can park on ____________________ side of the street.（苏州市）
A.either
B.neither
C.both
D.all
2.We asked John and Henry some easy questions,but ____________________ of them could answer them.（上海市）
A.none
B.both
C.all
D.neither
3.—Which is more useful,biology or chemistry?
—I think ___________________ them are useful.（广州市）
A.either of
B.none of
C.both of
D.all of
4.___________ Lily ______________ Lucy may go with you because one of them must stay at home.（吉林省）
A.Not only；but also
B.Neither；nor
C.Both；and
D.Either；or
参考答案：
1.A 2.D 3.C 4.D

呵呵,both只是表示都啦,然后是作复数的,但的确不用在否定里面.
either通常加or,表示两者其一,单数.
或者跟在句尾,作"也"的意思(否定的时候)像"I don't like it either."
neither加nor,表示两者都不.

BOTH表肯定，它不能用在表示否定的句子
EITHER表否定，也可以表肯定,常与or连用
NEITHER表示否定,常与nor连用