问题描述：
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
It is the interaction between people,rather than the events that occure in their lives,that is the main focus of social psychology.
It is the interaction between people,rather than the events that occure in their lives,that is the main focus of social psychology.
问题解答：
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