Senior High School English Question: Why do clauses lack subjects instead of objects? Isn't there already a subject we?

According to your understanding, that is to say, we think there is an object clause behind it, so there is still a lack of a subject indicator sb in this object clause, which sets a good example for all of us.

Of course, we think that it is generally regarded as parenthesis in grammar, which is generally ignored in solving problems, so it can be said that the attributive clause lacks a subject indicating sb.