问题1是对的
问题2的句子一是对的.句子二why不能等于什么了吧.
后面的看不懂了,你想表达什么?
没有at the day,只有at that moment就是的确是which等关系代词前的介词以先行词前所需加的介词决定的是对的？我的意思是： The reason why he was fired was not clear 的why 能不能用for that 代替？就是我不知道是the reason for 还是the reason of因为不收说that前的介词以先行词前所需加的介词决定的嘛 那么就是加of 还是加for 的问题了 你确定我的问题1里说的对吗which等关系代词前的介词以先行词前所需加的介词决定的不能用for that或 the reason of代替那定语从句的why 不能像where when一样被替代吗？Don't forget the day when you were received into the Youth League中的when 是不是也能用on which代替呀？回答下Don't forget the day when you were received into the Youth League可以还原成不是从句的状态， you were received into the Youth League on that day ,don't forget it。......因为on that day 可以用on which 或when 代替，所以该情况成立那reason可以换成 for which 吧？另一边我提问说可以换成for which 但就是没有for that 是吗