数学运算符号的英文表达

6%

读作

six percent

0.6%

读作

（

no ught

）

point six percent

500%

读作

five hundred percent

3.

倍数表示法

倍数表示方法很多，如：

This room is four times as big as mine.

这个房间是我房间的四倍。

This room is three times larger than that one.

这个房间比那个房间大两倍。

The output of coal has doubled.

煤的产量增加了一倍。

My aunt is as old again as I am.

我姑姑年龄比我大一倍。

Productivity is increased three fold.

生产效率提高了两倍。

The volume of the Sun is about 1,300,000 times that of the Earth.

太阳的体积约为地球的

1300000

倍。

4.

加减乘除式的读法

6+5

＝

11 Six plus five is eleven

或

Six and five is eleven.

11-6

＝

5 Eleven minus six is five.

或

Six from eleven is five.

4×5

＝

20 Four multiplied by five is twenty.

或

Four times five is twenty.

20÷4

＝

5 Twenty divided by four is five.

或

Four into twenty goes five.

15:5

＝

3 The ratio of fifteen to five is three.

32 Three squared is nine.

23 Two cubed is eight.

24 The fourth power of two is sixteen.

X^(1

/

2)=Y The square root of X is Y.

X^(1

/

3)=Y The cubic root of X is Y.

a

＞

b a is more than b.

a

＜

b a is less than b.

a ≈ b a approximately equals to b.

a ≠ b a is not equal to b.

5.

分数表示法

(1)

较小分数的一般读写方法。如：

1

/

3 one-third 2

/

3 two-thirds 3

/

5 three-fifths

(2)

较复杂分数的简明读写方法。如

22

/9 twenty-two over nine

a/b a over b

或

a divided by b 43

/97 forty- three over ninety-seven

(3)

整数与分数之间须用

and

连接。如：

four and a half nine and two fifths

(4)

分数用作前置定语时，分母要用单数形式。注意下列写法与读法。如：

a one-third mile

1

/

3

英里< /p>

a three-quarter majority

3

/

4

的多数

常用标点符号用法

常用缩略语表

．

period

句号

，

comma

逗号

：

colon

冒号

；

semicolon

分号

！

exclamation

惊叹号

？

question mark

问号

￣

hyphen

连字符

'

apostrophe

省略号；所有格符号

—

dash

破折号

‘’

single quotation marks

单引号

“”

double quotation marks

双引号

( )parentheses

圆括号

[]

square brackets

方括号

《》

French quotes

法文引号；书名号

...

ellipsis

省略号

¨

tandem colon

双点号

ditto

同上

‖

parallel

双线号

／

virgule

斜线号

＆

ampersand = and

～

swung dash

代字号

§

section

;

→

arrow

箭号；参见号

＋

plus

加号；正号

－

minus

减号；负号

±

plus or minus

正负号

×

is multiplied by

乘号

÷

is divided by

除号

＝

is equal to

等于号

≠

is not equal to

不等于号

≡

is equivalent to

全等于号

≌

is equal to or approximately equal to

等于或约等于号

≈

is approximately equal to

约等于号

＜

is less than

小于号

＞

is more than

大于号

≮

is not less than

不小于号

≯

is not more than

不大于号

≤

is less than or equal to

小于或等于号

≥

is more than or equal to

大于或等于号

％

per cent

百分之

…

‰

per mill

千分之

…

∞

infinity

无限大号

∝

varies as

与

…

成比例

√

(square) root

平方根

∵

since

;

∴

hence

所以

∷

equals

,

∠

angle

角

?

semicircle

半圆

?

circle

圆

○

circumference

圆周

π

pi

圆周率

△

triangle

三角形

?

perpendicular to

垂直于

∪

union of

并，合集

∩

intersection of

交，通集

∫

the integral of

…

的积分

∑

(sigma) summation of

总和

°

degree

度

′

minute

分

″

second

秒

＃

number

…

号

℃

Celsius system

摄氏度

＠

at

单价

标点符号和运算符号

常用标点符号用法

句号

Period

用以表示一个句子的结束

Hockey is a popular sport in Canada.

The federal government is based in Ottawa.

用在缩写中

B.C. is the province located on the West Coast.

Dr. Bethune was a Canadian who worked in China.

The company is located at 888 Bay St. in Toronto.

It is 4:00 p.m. in Halifax right now.

问号

Question Mark [?]

在句子的结尾使用问号表示是直接疑问句：

How many provinces are there in Canada?

注意：在间接疑问句结尾不要加问号：

The teacher asked the class a question.

Do not ask me why.

叹号

Exclamation Mark [!]

在句子的结尾使用叹号表示惊讶、兴奋等情绪：

We won the Stanley Cup!

The forest is on fire!

逗号

Comma [,]

句子中的停顿

Therefore, we should write a letter to the prime minister.

在疑问句中引出说话人：

排列三个或以上的名词：

Ontario, Quebec, and B.C. are the three biggest provinces.

引出定语从句

Emily Carr, who was born in 1871, was a great painter.

单引号

Apostrophe [']

表示所有

This is David's computer.

These are the player's things. (things that belong to the player)

Note:

对于复数形式的名词，只加

'

These are the players' things. (things that belong to the players)

缩写

I don't know how to fix it.

引号

Quotation Marks [

直接引出某人说的话：

The prime minister said,

冒号

Colon [:]

引出一系列名词

There are three positions in hockey: goalie, defence, and forward.

引出一个较长的引语

The prime minister said:

分号

Semicolon [;]

将两个相关的句子连接起来

The festival is very popular; people from all over the world visit each year.

和逗号一同使用引出一系列名词

The three biggest cities in Canada are Toronto, Ontario; Montreal, Quebec; and Vancouver, B.C.

破折号

Dash [-]

在一个句子前作总结

Mild, wet, and cloudy - these are the characteristics of weather in Vancouver.

在一个句子的前面或后面加入额外的注释

The children - Pierre, Laura, and Ashley - went to the store. Most Canadians - but not all - voted in

the last election.

表示某人在说话过程中被打断

The woman said,

连字符

Hyphen [-]

连接两个单词

sweet- smelling

fire-resistant

将前缀

anti-Canadian

non-contact

在数字中使用

one- quarter

twenty-three

加、减、乘、除的表示法

加、减、乘、除的表示法：

1

．加：用

and ,plus , added to

等词表示。

2

＋

4

＝

6

可译为：

Two and four is six .

Two plus four is equal to six .

Two added to four equals six .

Two and four makes six .

Two plus four will be six .

If you add two to four , you get six .

2

．减：用

minus, taken from, subtracted from

等表示。

8

－

3=< /p>

可译为：

Eight minus three is five .

Eight minus three is equal to five .

Three taken from eight leaves five .

Three subtracted from eight leaves five .

Take three from eight and the remainder is five .

3

．乘：用

multiply·

·

·

by·

·

·

/ multiplied by / time

等表示。

3 × 5 = 15

可译为：

Multiply three by five is (gives)fifteen .

Three multiplied by five is fifteen .

Multiply three by five , you get fifteen .

Three times five is (makes, will be , equals, is equal to ) fifteen .

4

． 除：用

divide·

·

·

·

·

/ divided by / divide·

·

·

into·

·

·

/ into

等表示。

24 ÷ 8 = 3

可译为：

Twenty-four divided by eight makes (is , equals ) three .

Twenty-four divided by eight is equal to three .

Eight into twenty-four goes three times .

Divide eight into twenty-four , and you get three .

Divide twenty- four by eight , and you get three .

度量衡分类