此句的出处是:
The people you are talking with do not always challenge you to give reasons for your statements. They may know why you feel as you do, or they may already agree with you, or they simply may not want to put you on the spot; and so they don’t always ask “why?”. But the people who read what you write may not know you, agree with you, or feel in any way obliged to you. If you want to communicate effectively with readers, you must provide solid evidence for any point you make
They may know why you feel as you do
他们可能知道你为什么会有这种感觉。
句子结构分析如下:
they(主语)
may know(谓语)
why you feel as you do(宾语从句)
as you do (方式状语从句)