Definition
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tú
Is í an fhocail 'tú' an foirm duine amháin atá ag tagairt do dhuine a bhfuil tú ag caint leis.
The word 'tú' is the singular form referring to the person you are speaking to.
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An bhfuil tú ag dul chuig an gcarnabhail?
Are you going to the carnival?
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Sílim go bhfuil tú an-chliste.
I think you are very clever.
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Cén uair a shroichfidh tú?
At what time will you arrive?