第3个回答 2011-11-07
答:1.先行词任何时候都不在定语从句中作句子成分,因为它是被定语从句所修饰的名词或代词。在定语从句中作成分的是关系代词和关系副词。
在定语从句中作定语的有关系代词whose 和which:
如:They lives in a room whose window opens to the south. 他们住在一间窗户朝南开的房间里。
a room 是先行词,它是in的宾语。in a room是主句中的状语。
whose window opens to the south. 是由关系代词whose引导的定语从句。其中的主语是whose window, whose 是window的定语。
关系代词多在从句中作主语或宾语(包括介词的宾语)但有时也可以作定语,意为“这个,那个)如:
He returned to his home village for 18 months, during which time he did most of the thinking that led to his later work on gravitation and optics.
during which time...... 是定语从句, which 是关系代词, 在从句中作定语修饰time,
(which time )一起作介词during的宾语, 介词短语during which time在定语从句中作时间状语
2.关系副词在定语从句中永远是作状语的。