To learn how to use the question tag: n'est-ce pas.
What is a question tag?
It is a word or an expression added at the end of a statement to turn it into a question.
Question tags are used mostly in conversation, to encourage a reply or to confirm that something is true or false. So in English, we would say: He is here, isn't he? I did my homework, didn't I? We have done our homework, haven't we?
If, in English, the question tag changes according to the verb of the statement, this is not the case in French.
FRENCH QUESTION TAG: N'EST-CE PAS ?
The question tag n'est-ce pas ? which, translated literally, means "is it not", is used at the end of a statement to turn it into a question, usually answered by
n'est-ce pas does not change according to the verb of the main statement.
non ? is a more informal question tag.
C'est un beau poème, n'est-ce pas ? (formal)
C'est un beau poème, non ? (informal) It is a beautiful poem, isn't it?
Vous accompagnerez les enfants à l'école demain, n'est-ce pas ? You will take the children to school tomorrow, won't you?
Natasha et Louis sont venus le mois dernier, n'est-ce pas ? Natasha and Louis came last month, didn't they?
J'ai mangé des pommes au déjeuner, n'est-ce pas? I have eaten apples for lunch, haven't I?
NOTE: as you can see in these examples, the question tag remains unchanged, whether the verb of the main statement is in the future or the past tense.