prevent的用法 prevent怎么用

prevent的用法如下：

1、prevent doing sth阻止做某事。

2、prevent sb from doing sth阻止某人做某事。

相关例句：Nothing would prevent him from speaking out against injustice什么也阻止不了他反对公平的演讲。

相关例句：Her sudden arrival prevented him from going out她突然来到，使他不能外出。