这句话语法正确吗?如何改正.

题目

这句话语法正确吗?如何改正.
it is important that professionals in event,sport,tourism and hospitality need to recognize and understand group dynamic both on customers and workers because it can not only conduct workers whose do their job more effectively and efficiently,but also contribute to more financial rewards.

答案

把whose 改成who
【“it ”is important 】“that” professionals in event,sport,tourism and hospitality need to recognize and understand group dynamic both on customers and workers 【because it can not only conduct workers whose do their job more effectively and efficiently,but also contribute to more financial rewards.】
【】里是主句,是一个表示因果关系的复合句
“that”引导的是主语从句,是真正的主语,“it”充当修饰主语