prevent 用法:prevent sb. (from) doing note: 在被动语态中,from不能省略:he was prevented from going to school because of his illness.
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.
prevent sb from doing的from可以省略.preventfrom意义是:阻止某人做某事.prevent sb from doing sth在主动语态中from可以省略,被动语态中from不可以省略.例如: 1、we must prevent the water( from )being polluted. 2、he was prevented from going to school because of his illness.
prevent sb from doing的from可以省略.preventfrom意义是:阻止某人做某事.prevent sb from doing sth在主动语态中from可以省略,被动语态中from不可以省略.例如: 1、We must prevent the water( from )being polluted. 2、He was prevented from going to school because of his illness.
不可以,这是个复合宾语结构,prevent sb from doing sth,from在这里具有否定作用,不能省略,they prevent him from knowing the news.他们不让他知道这个消息.
可以.但keep sb from doing sth 中的from不可以省略.stop / prevent sb (from) doing sth.可以省略而不改变意思keep sb doing-------让某人一直--- ---keep sb from doing - - - 阻止某人- - -- -
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.
prevent 用法:prevent sb.(from) doingNote:在被动语态中,from不能省略:He was prevented from going to school because of his illness.
可以.但keep sb from doing sth 中的from不可以省略.stop / prevent sb (from) doing sth.可以省略而不改变意思keep sb doing-------让某人一直--- --- keep sb from doing - - - 阻止某人- - -- -
prevent sb from doing的from可以省略. prevent from 表示“阻止某人(某物)干某事”, 介词from后常接动词-ing形式.用于主动语态时,prevent sb. / sth. from doing sth. 中的from常可省略,用于被动语态时,三者中的from都不能省略.例如: 1. The bad cold prevented / stopped Alice ( from ) taking part in the sportsmeet. 2. The old lady can't bepreventedkept from joining the club.