填when,这是定语从句,以后楼主记得,定语从句中,被从句修饰的词(即先行词)必须在从句中做一个名字成份.这里被修饰的词是the days,在从句中做时间状语,所以用when.
如果句子改成:I still remember the days we spent together in America.就应该用which或者that或者不填了,因为the days在从句中作spent这个动词的宾语的.
填when,这是定语从句,以后楼主记得,定语从句中,被从句修饰的词(即先行词)必须在从句中做一个名字成份.这里被修饰的词是the days,在从句中做时间状语,所以用when.
如果句子改成:I still remember the days we spent together in America.就应该用which或者that或者不填了,因为the days在从句中作spent这个动词的宾语的.