Period Two Learning about Language 定语从句(Ⅰ)1．定义在复合句中修饰名词或代词的从句叫定语从句，被修饰的名词或代词叫先行词。As a general rule，the most successful man in life is the man who has the best information.一般说来，生活中最成功的人是获得最佳信息的人。2．分类根据定语从句与先行词关系是否密切，它可分为限制性定语从句和非限制性定语从句两种。限制性定语从句是句中不可缺少的组成部分，主句和从句之间不用逗号与主句分开。非限制性定语从句是对主句先行词的补充说明，没有这个从句，不影响主句意思的完整。一般用逗号与主句分开。We’re going to do something that’s never been done before.我们要做以前从未做过的事。(限制性定语从句)I have lost the pen，which I like very much.我丢了那枝我十分喜欢的笔。(非限制性定语从句)3．关系词(1)引导限制性定语从句的关系代词：指代对象指代人指代物既可指人也可指物主语who，thatwhich，that，asthat宾语whom，thatwhich，that，asthat定语whosewhoseThe doctor whom/that you are looking for is in the room.你正找的那位医生在屋子里。(指人，作宾语)A man who/that is perfectly pleased with the present state of things is a failure.完全满足于现状的人是一个失败者。(指人，作主语)Do you know the man whose name is Wang Bing?你知道那个叫王兵的人吗？(指人，作定语)The building which/that stands near the river is our school.河边矗立的那座建筑物是我们的学校。(指物，作主语)Is this the book which/that she was looking for?这是她刚找的那本书吗？(指物，作宾语)The building whose windows face south was built last year.那栋窗户朝南开的楼房是去年建的。(指物，作定语)注意：whom，which 作介词宾语时，介词一般可放在 whom/which 之前，也可放在从句原来的位置上；但在含有介词的动词固定词组中，介词只能放在原来的位置上。The room in which there is a machine is the workshop.有机器的那间房是车间。This is the person whom you are looking for.这是你要找的那个人。(2)引导非限制性定语从句的关系代词：指代对象指代人指代物既可指人也可指物主语whowhich，as无宾语whomwhich，as无定语whosewhoseI...
