The only thing neighbors have in common ，to begin with ，is proximity and unless something more develops，that isn't reason enough to be best friends 请问怎么样分析这个句子，that 是什么成分？
句子本身就不是很完美，有点别扭。不过that的用处基本上就是说“这些”，表明之前提到的几个观点在后边句子里的用处。
不过我认为句子这样写顺一点：
The only thing neighbors have in common, to begin with, is proximity and unless something else develops, there isn't enough reason to become best friends. 不过这只是个人观点。
不过我认为句子这样写顺一点：
The only thing neighbors have in common, to begin with, is proximity and unless something else develops, there isn't enough reason to become best friends. 不过这只是个人观点。
