"I have worn a suit."

Translation: Dw i wedi gwisgo siwt.

[crepuscularr]

When is "Rydw" used? "Rydw i wedi gwisgo siwt" is listed as a correct answer but I tried "rydw" in some earlier lessons and it was marked as wrong. Are there some situations where it can't be used in statements?

[EllisVaughan]

Rydw can be used almost whenever dwi/dw i is used. So dwi/dw i is used for statements and questions whereas Rydw i is only used in statements with Ydw i as the question form. If it was a statement and you used Rydw i and it was marked as wrong but dwi/dw i was accepted then you should report it .

[crepuscularr]

Diolch yn fawr. I had a feeling that was the case, but it's been a while since I studied Welsh so I was still pretty unsure.

[EllisVaughan]

It's fine, the course doesn't help itself since it accepts the formal as answers but never actually teaches them

[sarahwpickle]

I wore, is not gwisgais then?