Definition
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dylai
Mae 'dylai' yn golygu bod rhywun yn gorfod gwneud rhywbeth neu fod yn rhaid iddo wneud rhywbeth.
'Dylai' means that someone ought to do something or must do something.
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Dylai pawb fynd i'r ysgol bob dydd.
Everyone should go to school every day.
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Dylai hi wneud ei gwaith cartref cyn mynd allan.
She should do her homework before going out.
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Dylai'r plant fwyta mwy o ffrwythau.
The children should eat more fruits.