"Est ti i'r dafarn dydd Llun?"

Translation: Did you go to the pub Monday?

[Auleliel]

Why is "dydd Llun" not mutated here?

[ChrisMSully]

Correct English?

[HerrArbo]

It can be said that way colloquially, and it's closer to the Welsh. "Correct" English is also accepted.

[FaizalZahid]

Can someone give me a full conjugation for all pronouns for 'to be', 'to have', 'to come' and 'to do' for present and past tense?

I've tried to search on Google Images but I could not understand anything since it is lack of sources.

[Mathso2]

Wiktionary has conjugations of verbs from many languages, including Welsh, on the English version (the biggest challenge, though, is working out how to interpret the conjugation charts...)