数学运算英语表示

数学运算英语示 英语加减乘除表达 1.加减乘除 ? A，B,C A plusB equals/is C 20，5,25 Twenty plus 5 equals/is twenty-five. ? A,B,C A minusB equals/is C 20,5,15 Twenty minus 5 equals/is fifteen. ? A×B,C A multiplied byB equals/is C 20×5,100 Twenty multiplied by 5 equals/is one hundred. ? A?B,C A divided byB equals/is C 20?5,4 Twenty divided by 5 equals/is four. 2.加减乘除口语化的表达 ? Add twenty and five, we can get twenty-five. ? Subtract five from twenty, we can get fifteen. ? Multiply twenty by five, we can get one hundred. ? Divide twenty by five, we can four. 3. 用how much对加减乘除进行提问 ?Twenty minus five equals fifteen. How much does twenty minus five equal? ?Twenty minus five is fifteen. How much is twenty minus five? 英语分数、小数及百分数的表达 1.表达形式 ?分数 ?基本规则:子基母序(即:分子用基数词，分母用序数词) 1/3 one third 1/8 one eighth 1/12 one twelfth ?当分子大于1时，分母要加s变成复数。 2/3 two thirds 3/8 three eighths 5/12 five twelfths ?特殊的表达: 1/4 可以表示为 one fourth 或者 a quarter 3/4 可以表示为 three fourth 或者 three quarters 1/2 a half ?.小数 小数点前后的数均按基数词来读，小数点读成point， 小数点后的数字逐位读出。 3.1415926 three point one four one five nine two six 0.463 zero point four six three ?.百分数 汉语中先读百分号，再读数字;英语中恰恰相反:先念出数字，再加上百分号percent 80% eighty percent 99.5% ninety-nine point five percent 2.由分数、小数或百分数构成主语时，其后的谓语跟分数、小数或百分数的单复并无关系，而是由这些数后的名词的情况来决定。 ?当所修饰的名词是不可数名词或可数名词的单数时，谓语用单数。 Three quarters of the earth’s surface is water. ?当所修饰的名词是可数名词的复数时，谓语用复数。 Half of the students are going outing in Suzhou amusement park.