When making negative sentences

When making negative sentences in Turkish, learners sometimes use the positive verb form. But like in Spanish, we love negation in Turkish.
Let's say, you want to say; Nobody believes them.
Then in Turkish we say; Kimse onlara inanmıyor.
As you see we did not only use the word "kimse" as nobody but we also "inanmıyor" is negative!

Let's read more examples;
I do not anything. Hiçbir şey istemiyorum.
She did not buy anything. Hiçbir şey satın almadı.
You are not going to anywhere. Hiçbir yere gitmiyorsun.

So please keep in mind that, no matter which and how many negative words you use other than the verb, if you will say something negative and not sarcastic at all :) use the negative verb, too.

But can't we say it at all? Of course you can!
Let's say you forgot this lesson and said
Noboy went. "Kimse gitti". instead of "Kimse gitmedi."

Then it sounds like a joke if you say such a sentence as a reply to this question
Who went there?
Cause you really say that someone went, but just noone...