# 各种标点符号用英语怎么读

"."这个点，我们平时会读piont，但在网址中要读dot，虽然平常口语中用得不多，但偶尔也还是会用，那么标点符号怎样用英语读出来，我们学一下吧！ + plus 加号；正号

“1+1”读作：one plus one

－minus; negative 减号；负号

“2-1”读作：two minus one

“-3”读作：minus three或negative three

“2-(-3)”读作：two minus negative three

± plus-minus sign 正负号

“±1” 读作：plus or minus one

× multiplied by ; times 乘号

“2×3” 读作：two multiplied by three 或 two times three

÷ divided by 除号

“4÷2”读作：four divided by two

= equals; is equal to 等于号

“1+1=2”读作：One plus one equals two.

is not equal to 不等于号

“a≠b”读作：a is not equal to b

congruent to 全等（两个图形形状相同、大小相等）

“△ABC≌△DEF”读作：Triangle ABC is congruent to Triangle DEF.

approximately equal to 约等于号

“3×3≈10” 读作：Three multiplied by three is approximately equal to ten.

< is less than 小于号

“1<2”读作 One is less than two.

> is greater than 大于号

“2>1”读作：Two is greater than one.

≮ is not less than 不小于号

“3≮2”读作：Three is not less than two.

≯ is not greater than 不大于号

“2≯4” 读作：Two is not greater than four.

is less than or equal to 小于或等于号

“2≤3”读作：Two is less than or equal to three.

is greater than or equal to 大于或等于号

“5≥4”读作：Five is greater than or equal to four.

% percent 百分之……

“10%”读作：ten percent

per mill ; per thousand 千分之……

“10‰”读作：ten per thousand

infinity 无限大号

“－∞” 读作：negative infinity

varies as 与...成比例

“X∝Y”读作：X varies as Y

√￣: square root 平方根

“√￣16=4”读作：The square root of sixteen is four.

3√￣ cube root 立方根

“3√￣27=3”读作：The cube root of 27 is 3.

∵ since; because 因为

“∵1+1=2”读作：because one plus one equals two

∴ hence; therefore 所以

“∴1<2”读作：hence one is less than two

∠ angle 角

“∠A”读作：angle A

“∠A +∠B+∠C=180°” 读作：The measure of angle A plus angle B plus angle C equals 180 degrees.

⌒ semicircle 半圆

“⌒AB”读作：semicircle AB

⊙ circle 圆

“⊙A”读作：circle A

○ circumference 圆周

“○=π×d”读作：Pi multiplied by d equals circumference.

π pi constant 圆周率

“π×d”读作：pi multiplied by d

△ triangle 三角形

“△ABC”读作：triangle ABC

What is the area of triangle ABC? 求三角形ABC的面积。

⊥ perpendicular to 垂直于

“A⊥B”读作：A is perpendicular to B.

// parallel to 平行于

Line AB is parallel to line CD.

∪ union of 并，合集

A∪B”读作：the union of A and B

∩ intersection of 交，通集

“A∩B”读作：The intersection of A and B

∫ the integral of ……的积分

“∫x”读作：the integral of x

∑ summation of 总和

“∑x”读作：the summation of x

° degree 度

′ minute 分

″ second 秒

℃ Celsius degree 摄氏度

℉ Fahrenheit degree 华氏度

@ at sign

{ } curly brackets 波形括号

[ ] square brackets 方括号

（）parentheses ; brackets; round brackets 括号

( open parenthesis 左括号

) close parenthesis 右括号

. point/dot 点? full stop; period 句号

, comma 逗号

| vertical bar; vertical virgule 竖线

& ampersand; and; reference; ref 和，引用

* asterisk, multiply, star, pointer 星号，乘号，星，指针

/ slash; divide; oblique; stroke; solidus 斜线，斜杠，除号

// slash-slash; comment 双斜线，注释符

# number sign; pound sign; hash 井号

\ backslash 反斜线转义符

~ tilde 波浪符

: colon 冒号

; semicolon 分号

? question mark 问号

! exclamation mark 惊叹号

' apostrophe 撇号、所有格符号

- hyphen 连字号

－ dash 破折号

_ underscore; understrike 下划线

... ellipsis 省略号

‘’ single quotation marks 单引号

“” double quotation marks 双引号

” Ditto Sign 如上所述

§ section sign; division 分节号

→ arrow 箭号；参见号