Question Tails and Tags
Whereas many lang. have fixed question tags, such as n’est-ce pas in French, verdad in Spanish, and nicht wahr or gell in German, for instance, English uses the same helping verbs that form a question, and each question tag depends on the verb tense. Common examples are: It’s a nice day, isn’t
it? or You haven’t met my fiancée, have you? For help with question tags, you can consult a good grammar book.