"Are you wearing a new tie?"
Translation:Dych chi'n gwisgo tei newydd?
Ydach/Ydych/Dach/Dych/Rwyt/Wyt - they're all the same thing - tricky to select the correct one before hand unless you've got a feel for the style of language used by the software. No problem but just needs getting used to.
Being a native speaker and living outside of Wales now, this is taking some getting used to as I find that some of the things that I write in that are actually correct are marked wrong, like this one. I suppose it's because the language section of Welsh on here is still new