Definition
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rhaid
Mae 'rhaid' yn golygu bod yn ofynnol i wneud rhywbeth.
The word 'rhaid' means that it is necessary to do something.
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Mae'n rhaid i chi ddod â'ch trwydded gyrrwr.
You must bring your driving license.
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Mae'n rhaid i ni fynd i'r ysgol bob dydd.
We must go to school every day.
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Mae'n rhaid i'w ffrindiau helpu ef.
His friends must help him.