Mr President, this is a timely address. Whatever else people disagree upon in Europe today, they at least agree on one point: Europe is in the midst of a profound debate about its future. I want to talk to you plainly today about this debate, the reasons for it and how to resolve it.
the reasons for it中的it指的是this debate，那样how to resolve it中的it指的是this debate还是Europe future?
二个 it 都指代this debate，语法不允许你将第二个it 理解为其它。除非说话人本来就用错了人称代词。
用代词指代，除去防止重复名词外，还有一个要紧有哪些用途就是起了句子间、词组间的连接纽带用途。所以写作中要正确用代词，代词与先行词之间的关系需要明确，防止读者误读。在阅读时，则应该正确解析代词的指代或替代，即可以分辨出先行词为什么。
