为什么逗号后边用了that，是什么从句。如果不是从句，前后的句子中都有谓语动词。为什么

Question

It is the interaction between people, rather than the events that occure in their lives, that is the main focus of social psychology.

Answer 1

本句是强调句。
还原：The interaction between people，rather than the events that occure in their lives，is the main focus of social psychology,
人的相互作用才是社会心理学的主要焦点，而不是发生在人们生活中的事件。
强调句强调的是句子的主语The interaction和the events(但the events用rather than排除了）
比如：It is you, rather than I, that will go to the meeting.是你而不是我去开会。
你的原句翻译：
就是人的相互作用，而不是发生在人们生活中的事件，才是社会心理学的主要焦点。

Answer 2

强调句。
the interaction between people, rather than the events that occure in their lives是并列宾语。

Answer 3

It is...., that- 最常见的“强调句”。本回答被提问者采纳