There are two ways of saying would in Welsh, using byddwn (south) and baswn (north), is often contracted to just swn . It’s best to be aware of both, and let local usage dictate which one you use.
As both are forms of bod , these auxiliary verbs both use yn and following verbnouns such as gwrando , to listen , do not mutate.
Affirmative
English Welsh Alternative Examples I would byddwn i fe fyddwn i byddwn i’n gwrando you would byddet ti fe fyddet ti byddet ti’n gwrando he would byddai fe fe fyddai fe byddai fe’n gwrando she would byddai hi fe fyddai hi byddai hi’n gwrando Carys would byddai Carys fe fyddai Carys byddai Carys yn gwrando the girls would byddai’r merched fe fyddai’r merched byddai’r merched yn gwrando we would bydden ni fe fydden ni bydden ni’n gwrando you would byddech chi fe fyddech chi byddech chi’n gwrando they would bydden nhw fe fydden nhw bydden nhw’n gwrando
Negative
English Welsh Alternative Examples would I? fyddwn i? – fyddwn i’n gwrando? would you? fyddet ti? – fyddet ti’n gwrando? would he? fyddai fe? – fyddai fe’n gwrando? would she? fyddai hi? – fyddai hi’n gwrando? would Carys? fyddai Carys? – fyddai Carys yn gwrando? would the girls? fyddai’r merched? – fyddai’r merched yn gwrando? would we? fydden ni? – fydden ni’n gwrando? would you? fyddech chi? – fyddech chi’n gwrando? would they? fydden nhw? – fydden nhw’n gwrando?
Negative
English Welsh Alternative Examples I would not fyddwn i ddim – fyddwn i ddim yn gwrando you would not fyddet ti ddim – fyddet ti ddim yn gwrando he would not fyddai fe ddim – fyddai fe ddim yn gwrando she would not fyddai hi ddim – fyddai hi ddim yn gwrando Carys would not fyddai Carys ddim – fyddai Carys ddim yn gwrando the girls would not fyddai’r merched ddim – fyddai’r merched ddim yn gwrando we would not fydden ni ddim – fydden ni ddim yn gwrando you would not fyddech chi ddim – fyddech chi ddim yn gwrando they would not fydden nhw ddim – fydden nhw ddim yn gwrando