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。
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。
