顾名思义,限制性定语从句起限制作用,不可或缺,与先行词关系紧密,不用逗号隔开,否则句意不完整。而非限制性定语从句的限制性较弱,可有可无,从句用逗号隔开。比如This is the book that you want。限制性定语从句。
His father ,who works here, is a good engineer.非限制性定语从句。
顾名思义,限制性定语从句起限制作用,不可或缺,与先行词关系紧密,不用逗号隔开,否则句意不完整。而非限制性定语从句的限制性较弱,可有可无,从句用逗号隔开。比如This is the book that you want。限制性定语从句。
His father ,who works here, is a good engineer.非限制性定语从句。