作者:城市网 来源:城市网学院 更新日期：2013-9-1
as...as；not so. . .as或not as...as
1)表示"相等"用as...as。
2)表示"不相等"用not so...as或not as...as。如：
1)This knife is as sharp as that one.这把刀跟那把一样快。
Bill is as tall as I. 比尔和我一般高。
Is this bag of soyabeans as heavy as that one?这袋大豆跟那袋一样重吗?
You know as well as I do.你和我一样明白。
[注]注意as后面的形容词如作定语，而被定语修饰的名词有不定冠词a时，冠词a须放在形容词之后，如German is as difficult a language as English.(德语和英语一样难学。)。这样的词序也适用于so，如I have never seen so beautiful a place as Guilin before.(我过去从未见过像桂林这样美丽的地方。)
2)tian An Men Square was not so big as it is now.天安门广场过去没有现在这样大。
The Atlantic Ocean is not as big as the Pacific ocean.大西洋没有太平洋大。
表示"几倍于"
用twice (两倍)，three times(三倍)等加as...as..
如：
New York is ten times as big as my home town.纽约有我的家乡十个大。
The output of the paper mill is now three times as high as it was in 1966.这家纸厂的生产比一九六六年增加两倍。
This river is twice as long as that one.这条河比那条河长一倍。
Asia is four times as large as Europe.亚洲比欧洲大三倍。
[注]表示"几倍于"也可以用下面的说法，如：
Three times three is nine.三乘三得九。
He is twice my age.他的年龄比我大一倍。
This lake is four times the size of that one.这个湖有那个湖四个大。
The irrigated area in this province is four times bigger than in l978.这个省的灌溉面积比1978年增加三倍。(four times bigger than = four times as big as)
Our county's agricultural output this year is 5 per cent higher than that of last year.我们县今年农业产量比去年增长百分之五。
表示程度
可用much，far，still，even，a 1itt1e，no，any，a great deal等状语来修饰形容词和副词的比较级。如：
The Yellow River is long，but the Changjiang River is even longer.黄河长，长江更长。
We are much better off now.我们的生活比过去好得多。
She sings far better than the others.她唱得比别人好得多。
Wang is taller than Zhang. Li is still than Wang. 王比张高，李比王还高。
[注一]注意下面的一些说法。如：
I couldn't move a step further，我连一步也走不动了。
The meeting lasted two hours longer than usual.会议比平常多开了两个钟头。
He is a head taller than I.他比我高一个头。(也可以说He is taller than me by a head.)
They got there earlier than we by twenty minutes.他们比我们早二十分钟到达那里。
The students of the university have increased by 100 per cent since l978.
这个大学的学生自一九七八年以来增加了一倍。
Do you want any more? -Yes，give me two more.
你还要吗?一是的，再给我两个。
Have you any more tickets? -Sorry，I have no more.
你还有票吗? －对不起，没有了。
[注二]可用形容词最高级 + possible或imaginable等词来强调语气。如：
I think he is the best possible man for the job.我认为他做这工作最合适。(也可以说the best man possible)
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