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.

或 One plus one is equal to 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.

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