方法一: 用关系代词,还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语,就必须要求用关系代词。例如:
  (错) This is the mountain village where I visited last year.
  (错) I will never forget the days when I spent in the countryside.
  (对) This is the mountain village (which) I visited last year.
  (对) I'll never forget the days (which) I spent in the countryside.
  习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。
方法二: 准确判断先行词在定语从句中的成分(主、谓、宾、定、状),也能正确选择出关系代词/关系 副词.先行词在从句中作主、定、宾语时,应选择关系代词;先行词在从句中作状语时,应选 择关系副词。例如:
      (对)Is this the museum which you visited a few days ago?
      (对)Is this the museum where the exhibition was held?