• 定义:在复合句中,修饰某一名词或代词的从句叫定语从句。
• 关系词:引导定语从句的词,分为关系代词和关系副词。
• 指人:who(主格)、whom(宾格)、whose(所有格)。
• who 在从句中作主语,例如:The man who is standing there is my teacher.
• whom 在从句中作宾语,例如:The man whom I met yesterday is my teacher.
• whose 在从句中作定语,表示“……的”,例如:The man whose car is red is my teacher.
• which 在从句中作主语或宾语,例如:The book which is on the desk is mine.
• whose 在从句中作定语,表示“……的”,例如:The book whose cover is red is mine.
• when:表示时间,在从句中作时间状语,例如:I still remember the day when I first met him.
• where:表示地点,在从句中作地点状语,例如:This is the place where we met for the first time.
• why:表示原因,在从句中作原因状语,例如:I don't know the reason why he is late.
• 只能用 that 的情况:先行词是不定代词、被序数词或最高级修饰、先行词既有人又有物等。
• 只能用 which 的情况:引导非限制性定语从句、介词后面等。