stop from，keep from和prevent from的区别

stop sb. from doing sth./ prevent sb. from doing sth./ keep sb. from doing sth.三者都表示“阻止某人做某事”, 一般情况下可以通用。如果一定要找出意思上细微差别，如下： prevent sb from doing sth阻止某人做某事, 让某人不做某事 stop sb from doing sth让某人不做某事 keep sb from doing sth让某人不做某事(保持不做某事，有个持续动作) 用法上的差别：在主动式中, stop sb. from doing sth.和prevent sb. from doing sth.中的介词from可以省略,但 keep sb. from doing sth.中的介词from不能省略（keep sb. doing sth. 意思为让某人一直做某事）。在被动式中三个词组中的from都不能省。