大小(xiao)、长度、重量等表示法，特别是倍数(shu)表达法对于扩大考生来说是重点也是难(nan)点，翻译、改错等题型都可以出题，考试时不容易对付，要(yao)求考生必须熟练掌握(wo)和运用。
1，主语+系动词+数词(ci)+times(倍数)as+原(yuan)级形容词+as+比较(jiao)对象。
Asia is four times as large as Europe.
亚洲面积(ji)是欧洲的四倍。
He runs twice as fast as Mike．他跑的速度是迈克(ke)的两倍。(两倍只用twice就可以了。)
This TV set costs twice as much as that one．
这台电视机的价格是那台电(dian)视机的两倍。
The playground is 2．5 times as big as it was ten years ago．
这(zhe)个操场是十年前的两(liang)倍半大。
This tree is three times as tall as that one.
这棵树是那棵树(shu)的三倍高.
His father is twice as old as he.
他父亲的年纪有他两倍大。
其实(shi)：A is+n times 比较级 than B=A is n times as 原级 as B
Asia is four times as large as Europe.
= Asia is four times larger than Europe.
亚洲面(mian)积是欧洲的四倍。
The Yangtze River is almost twice as long as the Pearl River.=The Yangtze River is almost twice longer than the Pearl River.
长江差不多是珠江(jiang)长两倍。
The dictionary is exactly five times as expensive as that one.=The dictionary is exactly five times more expensive than that one.
这本字典比(bi)那本恰好贵5倍。
The output is twice as much as that of ten years ago. = The output is twice more than that of ten years ago
产量是10年(nian)前的两倍。
three times as long as sth
=three times longer than sth某物的三倍长
其他的句型转化也是同(tong)理。
2，A+系动词+数词(ci)+times+the+weight/width/depth/size/length等+of+比较对象。
The big box is five times the weight of the small one．
这个(ge)大箱子的重量是小箱子的五倍。
The newly broadened square is four times the size of the previous one.
新扩(kuo)建的广场是未扩(kuo)建时的四倍大。
说明:上述句型表示“是……的几倍"。其中的(de)as…as之间要用形容词(ci)原级。此外，我们可以用“倍数+the size／length／width／height／weight等单位名词+of…”来表示“……的尺寸(长度、宽度、高度、重量等)是(shi)……的几倍"。
3，主(zhu)语+谓语+倍数词/百分比+形(xing)容词／副词比较级+than+比较对(dui)象
I am twice older than Tom．
我的岁数是汤姆(mu)的两倍。
Your dog'S sense of smell is up to 1 00，000 times greater
你的狗的嗅觉灵敏(min)是你的嗅觉的十万倍。
The university is three times bigger than it was in 1980．
这所大学现在(zai)是1980年时(shi)三倍那么大。
The grain output is 8 percent higher this year than that of
今年比去年粮食产量增加8％。
Manufacturing output has increased by 8%.
工业产量(liang)增长了8%。
Output will fall by 6%
产量将减少6%。
说明:此句型表示“比……大(多、宽、高等)几倍”。其中(zhong)的形容词要用比(bi)较级，而倍数词除(chu)了“两倍"可以用twice表示外，其他倍数都是由数字加上times所组成，例如“三(san)倍”是three times， “四倍"是four times，以此类推(tui)。
4，数词+单位量(liang)词词+形容词。
The wooden bridge is 20 metres wide．=The wooden bridge is 20 metres in width．这个木桥(qiao)有20米宽。
His father is six feet in height．=His father is six feet tall．他父亲身高(gao)六英尺。
This piece of luggage is 8 kilograms in weight．这件行李有八(ba)千克重。
The fish is two feet in length. 这条鱼有两英(ying)尺长。
We need a rope about 10 meters long. 我们需要一根约10米(mi)长的绳子。
The well is about 30 meters deep. 这口井约(yue)30米深。
He is six feet in height. 他(ta)身高六英尺。
注意:1.此句型用来表示(shi)有关长、宽、高、面积等(deng)的数值大小。其中，单位词有metre，kilometre，inch，foot，yard，kilogram，ounce，pound等。形容词有long，wide，high，deep，heavy等。此外(wai)，还可以用“基(ji)数词+单位词+in+名词"表示。名词有length，width，height，depth，thickness，weight等。可以用by来把长(chang)度和宽度的数值结合起(qi)来，用以说明一个物体的(de)大小。
注意：2.表示重量时，可用 in weight 结构(gou)，如要表示“这个箱子重10公斤”，可说：
The box is 10 kilos 或The box is 10 kilos in weight，但习惯上不说 The box is 10 kilos heavy。
注意：3.
I'm twice/double his age.
我的年(nian)龄是他的两倍。
I've paid five times the usual price for the stamp.
我出了5倍于往常的价(jia)格买这枚邮票。
The average income of the staff has been increased by 50 percent compared with last year.
与去年相比(bi),该单位职工的收入增加了50%.
The price of TVs are twofold(adj.两部分的,双重(zhong)的) down over these years.
近几年来,电视机的价格下降了(le)两倍。
我所有文章都(dou)是为了在辅导自己孩(hai)子时不至于手法生疏，同时分享给大(da)家，所有例句都经严格考察，可以大胆无限套写；无它。如果喜欢就(jiu)加个关注吧。
