prevent from doing的from可否省略

prevent from doing的from可否省略

"prevent sb./sth from doing sth."意为“阻止（制止、防止）某人（某物）做某事”，本结构中的介词from通常可以省略。例如：
1. The heavy rain prevented us (from) coming in time. 大雨使我们没能及时赶到。
2. Who can prevent us (from) going if we want to go? 如果我们要去，谁能阻止得了呢？
　　但是，在被动语态中，介词from不能省略。例如：
1. We were prevented from coming in time by the rain.大雨使我们没能及时赶到。
2. By whom can we be prevented from going if we want to go?如果我们要去，谁能阻止得了呢？

prevent sb from doing sth在主动语态中from可以省略，被动语态中不行。 例如 1)please don't prevent him playing basketball.不要阻止他打篮球。 2)he was prevented from playing basketball.有人阻止他打篮球。 3）something or other prevented him from coming . 不知什么事使他不能来。

prevent sb from doing sth的from在主动语态中可以省略，但在被动语态中不可省。 　　例句： 　　1)Don't prevent him playing basketball.不要阻止他打篮球。 　　2)He was prevented from playing basketball.有人阻止他打篮球。 　　3)Something or other prevented him （from） coming . 不知什么事使他不能来。