年龄表示法

　　句型［主语+be+数词（限制语）+years old/years of age］

　　1.    "How old is he?" - "he is just fifty (years old)." (= He is aged just fifty/ His age is just fifty.)

　　2.    "What is his age?" - "He is towards fifty years of age."

　　3.    "Of what age is your son?" - "(My son) eleven and a half years old."

　　4.    "Guess how old Mary is." - "She is about between eighteen and twenty years of age."

　　5.    The little one was five months old.  6. "How old is the moon?" - "She is fifteen days old."

　　7.  "How old is the tree?" - "This tree is centuries old."

　　6.    "How old is the horse?" - "The horse is over four years old

　　句型［…at the age of+数词］/ ［…at +数字+(years of age)］

　　1.    At the age of sixteen Darwin went to Edinburgh to study medicine and three years later to Cambridge.     2.  He died at the ripe age of eighty.

　　3.  She became plump at forty.  4. He graduated at twenty years of age.

　　4.  Children enter school at the age of five, don't they?

　　句型［…of+数词+years old (或of age)］［…aged+数字+years］［…数字+years of age］

　　［…in one's+数词复数］

　　1.    He is a boy of eleven years old.  2.  My elder brother is a man aged fifty years old.

　　3.  They are all children under five years of age.

　　4.  Children under 10 year of age are admitted at half price.

　　5.  He is a young, gallant officer in his twenties.

　　6.  The granny speaks as if she were a girl in her teens.

　　倍数表示法

　　句型［主语+谓语（double/treble）+宾语（增加对象）］

　　1.    This country has doubled her annual output of steel during the post-war years.

　　2.    In Hengdong County, its per-mu grain yield surpassed 800 in 1970, doubling that before 1965.

　　3.    The enemy's force trebles our own, but we have wiped out the enemy.

　　4.    Our opponents scored double our points.

　　[注] double 和treble也可以作不及物动词用，如：The grains in our commune have trebled this year.

　　Wages of workers had more than doubled.

　　句型［主语+be+倍数+that of +被比对象］/［主语+be+倍数+as…as+被比对象］

　　1.    In our area now the grain output is four times that before liberation.

　　2.    In this workshop the output of July was 3.5 times that of January.

　　3.    The per-mu yield of our village this year will count 2,400 jin, which is four times that of 1998.

　　4.    By that time we shall produce three times as much grain as we did ten years ago.

　　5.    This box is three times as heavy as that.  6. Beijing is ten times as big as my home town.

　　7.  The gross value of industrial output of our area this year will be estimated to be 2.5 times that of last year.

　　句型［主语+ be+倍数/百分数+up on/ over/ +被比对象］

　　［主语+ be+倍数/百分数+比较级+than+被比对象］

　　1.    The industrial output of last year in our village was 250% up on that of 1986.

　　2.    The grain output in that village was two times over that of 1988

　　3.    The sun is a huge blazing ball, a million times larger than the earth.

　　4.    This type of machine uses three times more fuel oil than that type does.

　　5.    A good harvest of early rice was reaped on 400,000 mu, the output being 25 percent higher than last year's.    6. Agricultural output for 1974 is estimated to be 51% up on 1964.

　　句型［主语+increase/rise/attain+(to)倍数+compared with+被比对象］

　　1.    By comparison with 1948, the foreign trade turnover of that country in 1957 increased 3.5 times.

　　2.    The number of pupils in this city has increased 6 times in comparison with1990.

　　3.    With the result of automation productivity has increased (risen to) sixty-six fold in that factory.

　　4.    Now the industry of this country has attained over six times of the pre-war output.

　　5.    Last year, the production of different kinds of farm tools in our factory increases (to) nine times, compared with 1999.

　　句型［主语+increase/rise等+(by)百分数+compared with…］

　　1.    The output of July in our factory increased (by) 250% compared with that of January.

　　2.    Many countries have increased their farm output by 100 percent or more within a short space of time.

　　3.    Over the past 17 years, Daqing has increased its annual output of crude oil by an average of 28 percent.

　　4.    In 2007 crude oil production rose 150% compared with 2005, fulfilling the company plan two months ahead of schedule.

　　[注1] by表示增加的净数，也可用于倍数，如：It exceeded our estimate by 3 times.

　　The enemy's forces were more than ours by 4 times.

　　[注2] 注意下面成语所含倍数的意义，加again 表示增加一倍，如：

　　He has books as much (many) as she.   He has books half as much again as she.

　　 分数减少表示法

　　句型［主语+reduce等+宾语+(by)分数或百分数…］

　　1.    The invention of many new tools in our factory has reduced the cost of production (by) one third, while the output has gone up (to) 160 percent.

　　2.    The price of farm tools in our factory has reduced (或decreased) tow fifths.

　　3.    It has reduced the amount by one half.

　　句型［主语+reduce等+(from)…to+分数或百分数］

　　1.    At that time industrial output in that country had sunk (或 had fallen等) two thirds.

　　2.    Agricultural tax has reduced from 12% in the early post-liberation years to five%.

　　3.    By the end of 2006, the share of the private dealers in this city had fallen to 5%.

　　计量表示法

　　句型［主语+measure+数词+单位+long等形容词/ in length等］

　　［主语+be+数词+单位+long等形容词/ in length等］［主语+attain+a length等+数词+单位］

　　1.    The tree is about sixty feet high (或in height). (= The tree attains a height of about sixty feet.)

　　2.    She was tall, near six feet in height, but slenderly formed.

　　3.    The bird is about six inches long and weighs three quarters of an ounce.

　　4.    I found myself alone in a vast room, between two and three hundred feet wide and about two hundred high, lying in bed twenty yards wide.

　　5.    "How wide is the river?" - "It's above ten meters wide (或in width)."

　　6.    Last year the snow attained a thickness (或fell a depth) of three feet here.

　　7.    He is 150 pounds in weight (= He attains a weight of 150 pounds).

　　8.    The police searched all the fields and woods within a radius of two miles.

　　句型［主语+measure/be+（长度）数词+单位+by+(宽度) 数词+（单位）］

　　1.    This room measures twenty feet by fifteen. (= the room is twenty feet in length and fifteen feet in breadth.)   2.  The bed is six feet by four and a half feet.

　　3.  "What size is that table?" "It measures three feet by three."

　　句型［主语+cost/ be worth+数词+单位］［主语+be valued/ be rated+at+数词+单位］

　　1.    "How much is it?" - "It costs above ten dollars" (= the price of it is above ten dollars.)

　　2.    This pen costs me five Yuan.

　　3.    It's worth 12 shillings, but this is not worth more than ten shillings.

　　4.    He valued the house for me at 350,000 Yuan.

　　5.    This coat costs 20 dollars, but I don't think it is rated at ten.