"Do you sell school clothes here?"

Translation: Dych chi'n gwerthu dillad ysgol yma?

[dizzilyenchanted]

I don't really think it's fair to be tested on formal and familiar when it wasn't in the lesson. I don't recall seeing it in the tips before the lessons.

[Cobeyo94]

Agreed.

[MiriamBernstein]

Are the words "dych" and "dach" are interchangeable?

[mizinamo]

They have the same meaning, if that's what you mean; the difference is regional - some will use dych and some dach. dach is more common in the North, I believe.

But I think any given person will use only one or the other.

[sophiarefoy]

What is "wyt ti'n"? Is it a regional difference?

[areddragon]

It's the singular/plural divide, kind of like tu/vous in French.

• Wyt ti'n is singular/familiar do you
• Dych/dach chi'n is plural/formal do you

[DmitryReve]

Wow, if I didn't read this comment, I would think exactly the other way.

[MorbidManatee]

What if I wanted to ask one stranger something? Would I use wyt ti'n because it's singular or dych chi'n because it's formal?

[KaraLily]

Always go formal with a stranger.

[MorbidManatee]

Thanks!

[NoelGoetowski]

Syr, mae hwn yn becws.

[ilovelang]

Agreed!

[Paolo.Fumich]

Me too, so I should use wyt to ask one of my friends if they want e.g. a coffee..