Doubt about ~나(요) [Asking Questions Grammar]
Hello, well I'm studying this grammar about doing questions with ~나(요) and I have a problem.
As far as I understood, it said that is usually used with 있다/없다 verbs.
But there was some examples like this:
~그 소식을 들었나요?
~어제 병원에 입원했나요?
The first one is 듣다 and the second one is a 하다 verb... and thats the thing is confusing me!
I don't know if I am a little bit dumb today but I can't understand well why this was used like this.
Can anyone help and explain me? I will be really thankful!!

Question

Doubt about ~나(요) [Asking Questions Grammar]
Hello, well I'm studying this grammar about doing questions with ~나(요) and I have a problem. 
As far as I understood, it said that is usually used with 있다/없다 verbs. 
But there was some examples like this: 
~그 소식을 들었나요? 
~어제 병원에 입원했나요? 
 The first one is 듣다 and the second one is a 하다 verb... and thats the thing is confusing me!  
I don't know if I am a little bit dumb today but I can't understand well why this was used like this. 
Can anyone help and explain me? I will be really thankful!!

Answer

~나요? is a end of a word which makes the sentence to interrogative sentence. You can use this with normal verbs not only 있다/없다. Furthermore 나요 is an expression of respect, if you want use it to your close friend you can use '~니'.

I will give you some examples:
엄마 지금 밥 하나요? (하다 + 나요)
영수야 숙제 하니? (하다 + 니)
드라마 보나요? (보다 + 나요)
영화 보니? (보다 + 니)

Past tense is:
엄마 밥 했나요? 
영수야 숙제 했니?
드라마 봤나요?
영화 봤나요?