Not only do I feel good about helping other people,but I get to spend time what I love to do.中的第一个do如何解释?

问题描述:

Not only do I feel good about helping other people,but I get to spend time what I love to do.中的第一个do如何解释?

是助动词.因为前面not only,后面跟倒装句,所以有do~