精选优质文档-倾情为你奉上Period 4 非限制性定语从句一、限制性定语从句与非限制性定语从句:限制性定语从句非限制性定语从句从句与先行词的关系从句是先行词不可缺少的定语,如果省去,主句的意思就会不完整或不明确。从句只是对先行词的附加说明,如果省去,主句的意思仍然清楚或完整标 点从句和主句之间不用逗号分开从句和主句之间通常用逗号分开关系代词指人who (that) whom指物which (that)人和物的whose关系代词在从句中作宾语时可以省去指人who(作主语)whom(做宾语)指物which人和物的whose关系代词一般不可省修饰从句只修饰一个名词或代词可以修饰一个名词或代词也可修饰整个主句E.g. People who take physical exercise live longer. (若把从句去掉, 句子就失去意义) His daughter, who is in London now, is coming home next