定语从句是
高考语法填空题的高频考点之一，更是写作中必须的表达方式。做语法填空题时，首先看从句修饰的内容。当修饰的内容是名词或代词时，常常是定语从句来修饰，确定是定语从句后，再看定语从句中缺少什么成份，如果缺少主语、宾语时，则考虑用关系代词，缺少状语时，则考虑用关系副词。例如： 1．(2013•广东)nick's guests，__20__ had heard their conversation，asked why they should not buy salt more cheaply if they could.此题中，设空从句修饰名词nick's guests，在从句中作主语，指人，为非限制性定语从句，故答案为who。 2．(2012•广东)of course whenever they turned to look at him，they had to look at mary，__22__ made her feel like a star. 此题中，设空处从句对前面内容补充说
