若all指人，则修饰它的定语从句用关系代词who引导；若all指事物或现象，则修饰它的定语从句用关系代词that引导。如：

All who heard the story were amazed. 听到这个故事的人都感到吃惊。

He was a man who was beloved by all who knew him. 每一个认识他的人都敬重他。

All that glitters is not gold. 闪光的东西不都是金子。

All that matters is to be happy. 最重要的是要心情愉快。

All that remains for me to do is to say goodbye. 剩下我所要做的就是告辞了。

注：若关系代词用作宾语，则关系代词也可以省略。如：

All (that) he wants is more pay for less work. 他只想少干活，多拿钱。

All (that) I did was give him a little push. 我只不过稍微推了他一下。