1. Not everything that you hear will be equally important. (P10)
此句为部分否定句, 句意是：你听到的没一件事情并非都重要。= Everything that you hear will not be equally important.
在英语中 all，both，every，everyone，everything 等与否定词 not 连用时，表示的是部分否定，而非全部否定。例如：
I don't know all of them. 我并不全认识他们。
I don't like both of the boo
