一道英语题为什么在seven multiplied by three is twenty-one中用multiplied

Two multiplied by three is(equal;makes) Four multiplied by five is twenty.请问这里的被动multiplied前为什么不能be动 【英语】multiply by 和multiplied by 有什么不同? 选择：_____ is five multiplied by five? 英语翻译五乘以三等于十五.Five multiplied by three is fifteen.Five times how much is 4 multiplied by the difference of one-half and o 6 multiplied by 3 is 18. 6 multiplied 3 is 18. 6 multiply 6 3 multiplied by 5 is 15.请分析句子成分 What is 5 multiplied by 4? A.1 B.20 Three times seven is twenty-one.句中times 是什么词性?作什么成分? multiplied by和times的区别 求一道英数题(急)find the smallest natural number when multiplied by