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Author Topic: 加减乘除、小数、分数、百分数及数量的英语表示法  (Read 2979 times)

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加减乘除、小数、分数、百分数及数量的英语表示法


一、加减乘除表示法

1. “加”用plus,and或add表示;“等于”用is,make,equal等词表示。

2+3=? 可表示为: How much is two plus three?

2+3=5

Two plus three is five.

Two and three is equal to five.

Two and three make five.

Two added to three equals five.

If we add two to/and three, we get five.

二加三等于五

2. “减”用 minus或 take from表示

10-6=?How much is ten minus six?

10-6=4

Ten minus six is four.

Take six from ten and the remainder is four.

Six (taken) from ten is four.

十减去六等于四

3. “乘”用time(动词)或multiply表示

3X4=? How much is three times four?

3X4=12

Three times four is/are twelve.

Multiply three by four,we get twelve.

Three multiplied by four makes twelve.

三乘以四等于十二

4. “除”用divide的过去分词形式表示

16÷4=? How much is sixteen divided by four?

16÷4=4

Sixteen divided by four is four.

Sixteen divided by four equals/gives/makes four.

十六除以四等于四。

二、分数表示法

1. 分数是由基数词和序数词一起来表示的。基数词作分子,序数词作分母,除了分子是“1”以外,其它情况下序数词都要用复数形式。

3/4 three fourths或 three quarters

1/3 one third或a third

24/25 twenty-four twenty-fifths

3 1/4 three and one fourth或 three and one quarter

1/2 a half

1/4 one quarter或a quarter

1 1/2 one and a half

1 1/4 one and a quarter

2. 当分数后面接名词时,如果分数表示的值大于1,名词用复数;小于1,名词用单数。

1 1/2 hours 一个半小时(读作 one and a half hours)

2 3/4 meters 二又四分之三米(读作two and three-fourths meters)

4/5 meter 五分之四米

5/6 inch 六分之五英寸

3. 表示“n次方”的说法:指数用序数词,底数用基数词。

10的7次方 the seventh power of ten(ten to the seventh power)

6的10次方 the tenth power of six(six to the tenth power)

三 、小数表示法

1. 小数用基数词来表示,以小数点为界,小数点左首的数字为一个单位,表示整数,数字合起来读;小数点右首的数字为一个单位,表示小数,数字分开来读;小数点读作 point,o读作 zero或o[ou],整数部分为零时,可以省略不读。

0.4 zero point four或point four 零点四

10.23 ten point two three 十点二三

25.67 twenty-five point six seven 二十五点六七

l.03 one point o three 一点零三

2. 当数字值大于1时,小数后面的名词用复数,数字值小于1时,小数后面的名词用单数。

1.03 meters 一点零三米 0.49 ton 零点四九吨

l.5 tons 一点五吨

四、百分数表示法

百分数用基数+percent表示

50% fifty percent百分之五十

3% three percent百分之三

0.12% zero point one two percent 百分之零点一二

这里的percent前半部per表示“每一”,cent这一后半部分表示“百”,所以百分之几中percent不用复数形式。

五、数量表示法

1. 表示长、宽、高、面积等,用基数词+单位词(meter,foot,inch,kilogram等)+ 形容词(long,wide,high等)表示,或者用基数词+单位词 + in + 名词(length, width, height, weight等)表示。

two meters long或 two meters in length 2米长

three feet high或 three feet in height 3英尺高

four inches wide或 four inches in width 4英寸宽

This box is 2 kilograms in weight.

这个盒子有两千克重。

The city wall of Xi'an is 12 meters wide and 12 meters high.

西安城墙是12米宽,12米高。

2. 表示时间、距离时,使用含数词的名词所有格形式作定语。

five minutes' walk

步行五分钟(的距离)

It's an hour's ride from my hometown to our university.

从我的家乡到我们大学是乘车一小时的路程。

或:从我的家乡到我们大学需要乘车一小时。

It's three kilometers' distance from our campus to the Bell Tower.

从我们校园到钟楼有三公里远。

3. 表示温度时,用below zero表示零下温度,温度用基数词+degree(s)+单位词(centigrade摄氏或Fahrenheit华氏)表示。

thirty-six degrees centigrade或 36℃ 摄氏 36度

four degrees below zero centigrade或 -4℃ 摄氏零下4度

Water freezes at thirty-two degrees Fahrenheit.

水在华氏三十二度时结冰。

Water boils at one hundred degrees centigrade.

水在摄氏一百度时沸腾。

这里的单位词在人们都很清楚是什么度量制度时,可以省略。

You are 37℃.(读作 thirty-seven degrees)

你是三十七度。(摄氏)

It's seven degrees below zero.

今天是零下七度。(摄氏)

4. 由数词和其他名词构成的名词性短语作定语时,其中的名词用单数形式,名词性短语中各部分间要用连字符“-”来连接。

It's a five-minute walk from the library to the playground.

从图书馆到操场需要走五分钟。

She's a sixteen-year-old girl.

她是个十六岁的女孩。

5. 表示“比?6?1?6?1?6?1大(或)几倍”的说法。

This room is two times bigger than that one.

这个房间比那个(房间)大两倍。

The dictionary is four times thicker than that book.

这本词典比那本书厚四倍。

My age is two times older than his.

我的年龄比他大两倍。

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