At the heart of the unease about these earliest works of literature were two fundamental questions: first, how could Greek literature have been born ex nihilo* with two masterpieces?
were对应的主语是什么？
假如对应的是 heart，那为何是 were 而不是 was?
假如对应的是前面一整句，但这个 At 是如何讲解呢?
这是一个由介词短语引导的完全倒装句：
At the heart of the unease about these earliest works of literature were two fundamental questions.
= Two fundamental questionswereat the heart of the unease about these earliest works of literature.
1. 倒装是什么原因和目的是：questions 后面是冒号，引出较长的同位语。
2. 句子的主语是：two fundamental questions，所以用复数动词were，跟the heart 无关。
3. at the heart of = at the center of “坐落于…的中心/核心”，前者可以表示抽象意义。介词短语作表语。
The veryreasonthat cliches so easily seep into our speech and writing - their insidious memorability -is exactly why they played such an important role in oral storytelling.
这个 is 对应的主语是 reason 吗？—— 是的，看红色部分。
