Different ways of asking the same question in Chinese?
Hi all. Just started learning Chinese on my own a few days ago. The resource I am currently using is showing two ways to ask a question. The first way is by adding ma at the end The sentence. The next section, they are inserting the word bù behind the verb, followed by the same verb, like so:
Zhè shì niú ma? Is this a cow?
Zhè shì bù shì niú? Is this a cow?
The section where they use examples of the second sentence is called “affirmative and negative’s“. Any clarification on both uses, if one is more correct or if they’re interchangeable, would be a great help! Thanks in advance

