* Present: + He has a book. ? Has he a book? Yes,he has\No,he has not - He has not a book.
* Past: + She had a severe headache yesterday ? Did she have a severe headache yesterday? Yes, she did\No, she did not. - She did not have a severe headache yesterday
* Future: + We will have a lecture in anatomy tomorrow. ? Will we have a lecture in anatomy tomorrow? Yes, we will have\ No, we will not have - We will not have a lecture in anatomy tomorrow.