I believe that confusion about questions is one of the biggest problems faced by learners.
I think that it would help you if you remembered this:
The verb "to be" is very special. When you make a question, just reverse the words:
"Tom is sick" becomes "Is Tom sick?"
"They are nice" becomes "Are they nice?"
"The restaurant's name is 'Good Eats' " becomes "Is the restaurant's name 'Good Eats'?"
When you make questions with other verbs, the English people decided many, many years ago to use the word "do/
"Mona loves English" becomes "Does Mona love English?"
"He ate a hamburger" becomes "Did he eat a hamburger?"
If a sentence has an auxiliary, just move the auxiliary to the front:
"Tom will go" becomes "Will Tom go?" (NO need for "does")
"We can speak English" becomes "Can we speak English?" (No need for "do")
"Martha had eaten a hamburger" becomes "Had Martha eaten a hamburger?" (No need for "did")
I know that making questions can be very confusing. Whenever you have any questions, just post a question here and someone will be delighted to assist you.