prevent sb from doing的from在主动语态中from可以省略,
被动语态中不能省略。
prevent sb from doing意思是:阻止某人做某事或阻止某事的发生。from后面的动词与from前面的词构成动宾关系时,后面用
动名词的被动形式。
1. Nothing could prevent him (from) doing that.
什么也阻止不了他做那件事。
2. My orders prevent me (from)doing that.
我接到指示不可做此事。
3. We must prevent the water (from )being polluted.
我们必须防止水污染。
4. The water must be prevent from being polluted.
必须防止水污染。