加括号的that在句中的成分

题目

加括号的that在句中的成分
原句为：Theories centering on the individual suggest that children engage in criminal behavior because they were not sufficiently penalized for previous misdeeds or 【that】 they have learned criminal behavior through interaction with others.句中or 前后两个分句应该是并列关系,那么为什么要有that啊?

答案

在许多从句中,当并列从句出现时,要从第二个开始前面都加that