"Would you not prefer to swim?"

Translation: Fasai hi ddim yn well gyda chi nofio?

[Banma48]

Would north Welsh use "efo" here instead of "gyda"? I was marked wrong.

[ibisc]

gynnoch chi would certainly work. Not sure about efo in this context.

[Taffycake108]

This puzzled me, surely fasai hi is she ... Wouldn't you be ti or chi?

[ibisc]

The 'you' in this construction is the chi. hi here means 'it':

• Fasai hi ddim...? - Wouldn't it be...?

Literally, fasai hi ddim yn well gyda chi...? would translate as '*wouldn't it be better with you....?', but the construction actually translates into English as 'wouldn't you prefer...?