Present/Perfect Use with 'yn' for Present tense: "I am washing" or "I wash" "Are you washing?" or "Do you wash?" "I am not washing" or "I don't wash" Use with 'wedi' for Perfect tense: "I have washed" "Have I washed?" "I haven't washed" Affirmative dw i/(wi) (wyt) ti mae e mae hi dan ni/(d)yn ni dach chi/(d)ych chi maen nhw Interrogative 'yes' ydw i? "wyt/ydych" (wyt) ti? "ydw" ydy e? "ydy" ydy hi? "ydy" ydan ni?/(yd)yn ni? "ydych/ydyn" (y)dach chi?/(yd)ych chi? "ydw/ydyn" ydyn nhw? "ydyn" Negative dw i ddim (dwyt) ti ddim dydy e ddim/dyw e ddim dydy hi ddim/dyw hi ddim (dy)dan ni ddim dach chi ddim dydyn nhw ddim Some Southern areas have a different form for the negative: sa i so ti so fe so hi so ni so chi so nhw or smo fi smo ti smo fe smo hi smo ni smo chi smo nhw Thus 'sa i'n meddwl' and 'smo fi'n meddwl' are the same as 'dw i ddim yn meddwl'.