prevent用法搭配及考点

Prevent，阻止、阻碍、阻挠。prevent doing sth，阻止做某事。prevent sb from doing sth，阻止某人做某事。prevent通常会接所有格形容词+动名词或接受词+from+动名词。当主词没有必要列出时，prevent可以直接接动名词，也可以接名词。

Snow has prevented communication with the outside world for three days.

大雪使得与外界的通信联系中断了三天。

Nothing would prevent him/ his speaking out against injustice.

什么也阻挡不了他为不平之事鸣冤叫屈。

We are taking steps to prevent pollution.

我们正在采取措施防止污染。