a divided by b
如15÷3读作fifteen divided by three能不能说成fifteen is divided by three不可以。英语里加减乘除都有固定的说法，而且都不是句子，你加上is变成句子是错误的。加plus，减minus，乘times，除divideda乘以b是a by b还是a multiplied by btimes怎么用？可以说是a multiplied by b。a by b是错误的。a+b=c: a plus b is ca-b=c: a minus b is caxb=c: a times b is ca÷b=c: a divided by b is c