inflected form of the verb is used: Doi di yfory, on doi? – You'll come tomorrow, won't you? With preterite and perfect forms, the invariable do (also the affirmative answer to these questions) is used: Canodd y bobl, on do? – The people sang, didn't they? Mae hi wedi ei weld o, on do? – She's seen him, hasn't she? When a non-verbal element is being questioned, the question particle ai is used: Mr Jones, on dai? – Mr Jones, isn't it? or Mr Jones, on tefe? In French Question tags are not very common in French. The structure n'est-ce pas? (literally "isn't it?", more idiomatically glossed to English as "isn't it true?") is nowadays considered very formal or obsolete. Unlike in English, the question tag n'est-ce pas? can be used after any subject and verb. French: Vous venez ce soir, n'est-ce pas? Literally: You are coming tonight, isn't it? English: "You are coming tonight, aren't you?" French: Elle est en France, n'est-ce pas? Literally: She is in France, isn't it? English: "She is in France, isn't she?" French: Tu n'es pas venu, n'est-ce pas? Literally: You didn't come, isn't it? English: "You didn't come, did you?" A more common and formal question tag consists in putting a non? (no?) at the end of a positive sentence or a si? (yes? with a negative sentence) at the end of a negative sentence. This structure is also sometimes used by native French speakers with a basic level of English. French: Il y a des taxis, non? Literally: There are taxis, no? English: "There are taxis, aren't there?" French: Je vais pas rater mon vol, si? Literally: I'm not going to miss my flight, yes? English: "I'm not going to miss my flight, am I?" References Syntactic entities Types of question