（本文讲的是噪音noise）
Cars, trucks, buses, motorcycles—all these things make noise. They bother not only our ears but our minds and bodies as well.
There is a saying about it being so noisy that you can’t hear yourself think.
查朗文词典可知，you can’t hear yourself think用来强调某个地方太吵闹。
请老师剖析一下There is a saying about it being so noisy that you can’t hear yourself think.的语法，saying指的是什么。
There is a saying about it being so noisy that you can’t hear yourself think.
这是 There be 存在句，saying 是真的主语，黑体部分是 saying 的定语。
it being so noisy that you can’t hear yourself think，是动名词复合结构作 about 的宾语。
在 it being so noisy that you can’t hear yourself think 中，it 指“周围环境”。原本是 it is so noisy，因为是动名词复合结构，is 变成了动名词，it 成了逻辑主语。别忘了，后面还有一个结果状语从句 that you can’t hear yourself think 呢。
saying 是名词，意为“谚语；格言；俗话；说法；常言”。
【翻译】有一种说法是（常言道/俗话说），噪音太大了以至于能把人吵死。
