prevent用法有哪些？
prevent的用法可是相当丰富多样的呢！它既可以作为及物动词，也可以作为不及物动词使用。作为及物动词时，prevent的基本含义是“预防，防止；阻止”。它的常见用法是prevent sb./sth. from doing sth.，表示“阻止某人/某事做某事”。例如：We must prevent the fire from spreading. 我们必须阻止火势蔓延。
此外，prevent还有一个常见的用法是prevent sb./sth. doing sth.，也表示“阻止某人/某事做某事”。但是要注意，这里的doing前面的宾语要用逗号隔开。例如：The heavy rain prevented us from going out. 大雨阻止了我们出去。
当prevent作为不及物动词时，它的含义是“妨碍，阻止”。常见的用法是prevent sth. from happening，表示“阻止某事发生”。例如：Nothing could prevent him from achieving his dream. 没有什么能阻止他实现他的梦想。
另外，prevent还有一个常见的短语搭配是prevent sb. from (doing) sth.，表示“使某人不能(做某事)”。这里的doing可以省略。例如：His illness prevented him from attending the meeting. 他的病使他不能参加会议。
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。
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