prevent sb from doing sth与stop sb from doing sth用法相同,在主动语态中from可以省略,被动语态中不行.
keep sb from doing sth中的from无论在主动语态中还是在被动语态中都不能省略.
protect...from...表示“保护……不受……侵袭,挡住,防御”.from后接能带来伤害或损害之物.
prevent sb from doing sth与stop sb from doing sth用法相同,在主动语态中from可以省略,被动语态中不行.
keep sb from doing sth中的from无论在主动语态中还是在被动语态中都不能省略.
protect...from...表示“保护……不受……侵袭,挡住,防御”.from后接能带来伤害或损害之物.