No. You are clearly very confused about how to ask questions. The topic of this post - and even the way that you have phrased your 'questions' - suggests that you need to go back to your basic grammar book to find out how you construct the interrogative form in English. Let's go back to basics. It really isn't very complicated: To make a question, all you need to do is take the statement, and swap round the order so that the auxiliary verb goes BEFORE the subject. Statement: This question has already been answered. Question: Has this question already been answered? This works for questions, like this, in a perfect tense, and questions in continuous and passive forms. It also works for questions where the main verb is 'to be', and questions using modal verbs. In simple tenses, the verb 'to do' is inserted as an auxiliary verb. This is how your question should read: IS the sentence "The question has already been answered" right？ Why DO we have to use "has" ？ CAN “has” BE deleted? What IS the word USED for？

Aside from the present perfect structure, the form of "been" cannot work alone. It needs another word (in this case, the helping-verb "has") to complete its meaning. That's why we call them participles: they participate. :)

The tense in this question is the present perfect passive. It has this form : subject + has/have + been + past participle (+ by + noun) e.g. I made you a nice dinner but you are very late home. Your dinner has been eaten by the dog.