Question: I was studing how to say school subjects in mandarin and I saw this sentence:

我最喜欢的科目**有**艺术，中文和化学
(My favorite school subjects are art, chinese and chemistry)

Why the use of 有 in this sentecence?

Could I say/write: 我最喜欢的科目是**是**艺术，中文和体育

Answer: 
> 
> 我最喜欢的科目有艺术，中文和化学。
> 
> 
> 

With 有, it offers a category. 我最喜欢的科目 is a category and in this category there are 艺术，中文和化学. So the sentence can be paraphrased as ***在***我最喜欢的科目***当中***有艺术，中文和化学.

With 是, it offers an equation like A = B. 我最喜欢的科目 = 艺术，中文和化学.

So both are correct.
Both are ok.

Why the use of 有 in this sentecence? Because here the "科目" in "我最喜欢的科目" is kinda list, so we can say "我最喜欢的科目有艺术，中文和化学", there are Art, Chinese etc in the list. "有" is the same meaning of "there are"