something must be done to stop some factories (from) polluting the environment

Question

请问这的介词为什么用from 请老师帮忙解决下 万分感谢

Answer 1

stop ... from doing sth 固定用法‘ 阻止……做……；

翻译：必须采取措施阻止工厂污染环境。

祝你假期愉快！加油！不明白再问！如果帮到你，请采纳，谢谢！追问

请问be done to在这的成分是什么？

追答

be done 是被动语态结构。
something主语 must be doney 谓语 to stop some factories (from) polluting the environment

Answer 2

你好~
stop sth from sth 把...从...中停止下来
有不懂请追问~谢谢！望采纳~
——丶寒冰烈

Answer 3

stop ... to do sth 或者 stop ... from doing sth;
因为后面接的是polluting，所以用from