as...as结构详解
(2014-04-29 20:32:32)分类: 英语语法 |
as...as用法
一.概述
“ as … as
…结构”在英语中用法较多,学生在平时的学习中会频繁地接触到此种结构。有部分学生认为“
as …
as…
“as
+
二.基本结构用法:
(一)“as
+
The tree is as tall as the
building(is)
This film is as interesting as that one.这部电影和那部电影一样有趣。
This dictionary is not as useful as you think.这本字典不如你想象的那样有用。
His bedroom is as clean as his sister’s.
He is as tall as I/me.他和我一样高。
He got up as early as I did.他和我起得一样早。
He cannot run so/as fast as you.他没你跑得快。
We should plant trees as many as possible我们应该尽可能多种树。
This film is as interesting as that one.这部电影和那部电影一样有趣。
希望你玩得和我一样愉快。
I love you as much as I love her. 我爱你如同我爱她。
She has as many as seven sisters. 她的姊妹有七人之多。
There were as many
as 200 people at the lecture.
另外还有变体结构:
as
+
I don't want a car as expensive as
this
=
我不要这么贵的汽车。
This is an example as good as the other is.
=This is as good an example as the other is.
这个例子和另外一个例子一样好。
Tony is a boy as clever as his brother.
=Tony is as clever a boy as his
brother
She is as good a cook as her mother. 她和她妈妈一样是位好厨师。
John is as clever a
student as mike.
John is as clever a
student as mike.
This is as good an example as the other is.这个例子和另外一个一样好。
This is as good an example as the other is.这是一个像其它的一样好的例子。
注意此结构也常用于形象比喻中:
as cool as
cucumber
as stubborn as a
mule
as clear as
crystal
as poor as a church
mouse
as busy as a
bee
as easy as
ABC
as deep as a
well
as light as a
feather
as soft as
butter
这些短语生动活泼,浅显易懂,记住这些短语可以提高学生的英语写作和口语能力。
(二)“ as … as
…结构”用于表示同一个人或物不同性质的比较,意为“既……又……”
This swimming pool is as wide as it
is long. 这个游泳池宽度和长度相等。
(三)“ as … as
…结构”用于表示两个人或物不同性质的比较,表示程度相同或相当,意为“……而……”。在否定句中结构是“ so/as…as…
”。例如:
He was as handsome as his wife was
beautiful
He was as experienced as his brother
was
green
He cannot run so/as fast as you.
他没你跑得快。
Danny is not so/as wise as he is
witty
(四)
as + much
+
意为“……和……一样多
"
例如:
I can carry as much paper as you
can. 我能搬得动和你一样多的纸。
You’ve made as many mistakes as I have.
Corn doesn’t need as/so much water as rice.玉米不需要稻谷那么多水。
另外,需要注意以上的变体机构:
1)变体结构的否定形式为“ so +adj. + a/an + n.
(
I am not so strong a man as I was.
我已经没有从前那么强壮了。
I’m not so good a player as any of you.我不是一个像你们任何一个一样好的运动员。
Mary
is as friendly a girl as Julie.
I have never met with as clever a boy as he is before, who has
really impressed me a great deal.
我从来没见过像他一样聪明的男孩,他的确给我留下了非常深刻的印象.
This
is as good a knife as that one.
I'm as good a cook as my mum.
This was not as bad a result as they expected.
其间接形容词时,有时该形容词还可修饰另一名词,但这个名词应带有不定冠词(注意词序):
She
is as good a cook as her
mother.
也可说:She is a cook as good as her mother.
但不说:She is as a
good cook as her mother.
2)当much 表示程度的时候
as much + 不可数名词 / a (an) + 单数可数名词+ as ...“和...(程度上)是一样的 ”
eg: 1)It is generally believed that teaching is as much an art as it is a science.人们普遍相信教学如同一门科学一样,它同样是一门艺术。
课本例句:
There’s as much competition among countries to host the Olympics as to win Olympic medals.国与国之间争取奥运会举办权的竞争,就跟争夺奥运奖牌一样激烈。B2U2
as much+不可数名词+as…意思是“和…是一样的”和上面基本形式as many/much +可数/不可数+as 不同,那是表示多少,这里是表示程度上一样。
It is as much your responsibility as mine.
She spends as much money on clothing as I do.
as much+a/an+单数名词+as…意思是“和…是一样的”
It is generally believed that teaching is as much an art as a science.
否定式:not so much…as… 与其说是…不如说是…
He is not so much an actor as a TV host.
二、
“as …
as…
(一)词组“ as long as
”意思是
It took us as long as three years to carry out the plan.
我们花了长达三年的时间才完成这项计划。
You may borrow this book as long as you promise to give it back.
只要你答应归还,你就可以把这书借走。
As long as you work hard, you are sure to succeed in everything.
只要你努力,你就一定会事事成功。
(二)词组“ as far as
”
He walked as far as the railway station yesterday evening.
昨天傍晚,他一直散步到火车站。
As far as I’m concerned, she is the most qualified for the job.
在我看来,她是最适合这份工作的。
(三)句式
To eat too much is as much a bad thing as to eat nothing.
吃太多和什么都不吃同样是坏事。
He is as much a member of the orchestra as Tom.
他和汤姆同样是管弦乐队的成员。
Comets are just as much members of the sun’s family as(are) the other planets.
彗星和其他的行星同样是太阳家族的成员。
(四)以下几个结构的意思都差不多:“ as … as
possible/as…as one can(could)/as…as…can
be”
Read the story as quickly as possible. = Read the story as quickly as you can.
尽快地阅读这篇故事。
They watered the trees as often as
possible. = They watered the trees as often as they could.
他们尽可能经常给树浇水。
His failure is as plain as plain can
be. 他的失败是再明白不过了。
He is as handsome as handsome can
be. 他潇洒极了。
Mary is as hardworking as can
be. 玛丽学习极为努力。
其他例如:
as wise as wise can
be
as white as white can
be
as wrong as wrong can
be
(五)“ as … as usual/ever/before
”此结构的意思是“像平时
He gets up as early as usual.
他像平时一样早起。
He seems to be as busy as ever.
他似乎像往常一样忙碌。
He works as hard as ever.
他和往常一样努力工作。
She was as beautiful as ever after so many years.
过了这么多年她美丽如故。
(六)“ as … as
…结构”可以用来表示倍数。具体用法是倍数词:
You are not half as clever as you
think you
are
你可不像自己想象的那么聪明。
She isn ’ t going out with a man who
is twice as old as
she
她不打算和一个比她大一倍的人出去散步。
We’ve produced twice as much cotton this year as we did last year.
我们今年的棉花产量是去年的两倍。
She works three times as hard as I.
她用功的程度是我的三倍。
需要注意的是,在比较级前还可以用“ over, more than
”
He is more than three times as rich
as I. 他的财富是我的三倍还不止。
I am more than twice as old as he.
我的年龄是他是两倍还不止。
He studies more than three times as
hard as I.
他用功的程度是我的三倍还不止。
He has collected more than four
times as many stamps as
I.他搜集的邮票是我的四倍还不止。
(七)词组“ as well as ”意思是“像…一样好,既…又…
,
1.
He speaks Japanese as well as English and French.
他不但讲英语和法语,而且还讲日语。
2.
As well as visiting the old man, he helped to clean the room.
除看望老人外,他还帮助打扫房间。
3. “ as well as
”用于同级比较
He can operate the machine as well as I do.
他操作这台机器和我一样熟练。
4.
(
Mary as well as I has been to the Great Wall.
我和玛丽去过长城。
(
They play the piano as well as sing.
他们不但会唱歌,而且会弹琴。
(
He works, as well as sleeps, in the room.
他既在这房间里睡觉,又在这儿工作。
(
You can’t expect her to do the housework as well as look after the children.
你不可能叫她既做家务又照看小孩。
(
She sings as well as playing the piano.
她不但会弹琴,而且会唱歌。
Heavy smoking runs away with your money, as well as being bad for your health.
抽烟多既浪费金钱,又对健康不利。
(
We are repairing the roof, as well
as painting the
walls.
(
I shall not see the film as well as
he. 他将去看电影,而我不去。
I, as well as he, shall not see the
film. 他不去看电影,我也不去。
(八)as soon as用法
英语动词的时间大致可分为三段:过去时、现在时、将来时。假设有两件事A和B,就会出现三种情况:
A 过去时 as soon as B 过去时
A 现在时 as soon as B 现在时
A 将来时 as soon as B 一般现在时(代替将来时)
在每一个大的时间段内,A 和 B 的时态要统一。比如 A 过去时,B 肯定在过去时内。其它也是如此。至于在每个大时间段内,再根据A 和 B两件事的具体情况,具体对待。比如:A 和B都时过去时,A 和 B 是同时发生,还是先后发生,不是即将发生,再分别选用完成时、进行时、将来时。例如:
A 过去时 B 过去时:
I
arranged the flowers in the vase as soon as I came back
home.
一回到家里,我就把花在花瓶里插好。
A 过去进行时 B 过去完成时(虚拟)
He was shaking with fright as if he had seen a ghost.
他吓得直哆嗦,就好像看见了鬼一样。
A 将来时 B 用一般现在时(代替将来时)
They
will post me the tickets/post the tickets to me as soon as they
receive my cheque.
他们收到我的支票后就立刻把票寄给我.
as soon as连接的时间状语从句中,指未发生的动作,规律是:主句一般将来时,从句用一般现在时代替一般将来时
如:I will tell him the news as soon as he comes back。
指紧接着发生的两个短动作,主从句都用一般过去时
如 He took out his English books as soon as he sat down
就这两种情况,熟记就行。
在宾语从句中,当主句为与过去时的时候,从句必须用与主句相对应的时态,所以为了与主句动词said呼应,时间状语从句中的will look up应该对应为过去将来时态would look up,finds对应为found
通过以上分析可以发现“ as … as …结构”看似简单,但此结构变化太多,不易掌握。只有在平时的学习中多做练习才能熟能生巧。