Mae ateb cwestiwn uniongyrchol yn Gymraeg yn debyg i ateb cwestiwn yn llawn yn Saesneg
Answering a direct question is generally like answering in full in English.

Questions beginning with:Answers
 Bod (to be) - Present and Perfect (wedi) Tense
Ydw i?Am/do I..?Wyt/Nac wyt (nagwyt)Yes you are/do/No you aren’t/don’t.
Wyt ti?  Are/do you..?Ydw/Nac ydw (nagw)Yes I am/do/No I’m not/don’t.
Dych chi?Are/do you..? (sing.)Ydw/Nac ydw (nagw) Yes I am/do/No I’m not/don’t.
Dych chi?Are/do you..? (plur.)Ydyn/Nac ydyn (nagyn)Yes we are/do/No we aren’t/don’t.
Ydy e/hi?Is he/she/it..?Ydy/Nac ydy (nady/nagyw)Yes he/she it is/does/No he/she it isn’t.
Ydyn nhw?Are/do they..?Ydyn/Nac ydyn (nagyn)Yes they are/do/No they aren’t/don’t          .
Oes?Is/are there..?Oes/Nac oes (nagôs)Yes there are/No there aren’t/don’t.
 
 Bod (to be) - Imperfect Tense
O’n i?Was I..?           O’t/Nac o’t (nagôt)Yes you were/No you weren’t.
O’t ti?Were you..? (sing.)O’n/Nac o’n (nagôn)Yes I was/No I wasn’t.
O’ch chi?Were you..? (plur./form.)O’n/Nac o’n (nagôn)Yes we were/No we weren’t.
Oedd e/hi?Was he/she/it..?Oedd/Nac oedd (nagôdd)Yes he/she/it was/No he/she/it wasn’t.
O’n ni?Were we..?O’ch/Nac o’ch (nagôch)Yes you were/No you weren’t.
O’n nhw?Were they..?O’n/Nac o’n (nagôn)Yes they were/No they weren’t.
 
 Bod (to be) - Future Tense
Fydda i?Will I (be)..?Byddi/Na fyddiYes you will (be)/No you won’t (be).
Fyddi di?Will you (be)..?Bydda/Na fyddaYes I will (be)/No I won’t (be).
Fyddwch chi?Will you (be)..? (sing.)Bydda/Na fyddaYes I will (be)/No I won’t (be).
Fyddwch chi?Will you (be)..? (pl./form.)Byddwn/Na fyddwnYes we will (be)/No we won’t (be).
Fydd e/hi?Will he/she/it (be)..?Bydd/Na fyddYes he/she/it will (be)/No… won’t (be).
Fyddwn ni?Will we (be)..?Byddwch/Na fyddwchYes you will (be)/No you won’t (be).
Fyddan nhw?Will they (be)..?Byddan/Na fyddanYes they will (be)/No they won’t (be).
 
 Bod (to be) - Conditional Tense
Fyddwn i?Would I (be)..?Byddet/Na fyddetYes you would(be)/No you wouldn’t(be)
Fyddet ti?Would you(be)..?Byddwn/Na fyddwnYes I would(be)/No I wouldn’t(be).
Fyddech chi?Would you(be)..? (sing.)Byddwn/Na fyddwnYes I would(be)/No I wouldn’t(be).
Fyddech chi?Would you(be)..? (pl.form.)Bydden/Na fyddenYes we would(be)/No we wouldn’t(be).
Fyddai fe/hi?Would he/she/it(be)..?Byddai/Na fyddaiYes he/she/it would/No he/she wouldn’t
Fydden ni?Would we(be)..?Byddech/Na fyddechYes you (be) would /No you wouldn’t.
Fydden nhw?Would they(be)..? Bydden/Na fyddenYes they would (be)/No they wouldn’t.
 
 Cael (to get/to have)- Future/Present Tense
Ga(f) i..?May I (have)..? Cei/Na chei (singular)Yes you may (have)/no you may not.
Ga(f) i..?May I (have)..? Cewch/Na chewch (plur/form.)Yes you may (have)/no you may not.
Gaiff e/hi..?May he/she (have)..? Caiff/Na chaiffYes he/she may (have)/no… may not.
Gawn ni..?May we (have)?Cewch/Na chewchYes they may (have)/no they may not.
Gân nhw..?May they (have)? Cân/Na chânYes they may (have)/no they may not.
 
 Gwneud (to do/make) - Future Tense
Wnei di?Will you..?Gwnaf/Na wnafYes I will/no I won’t
Wnewch chi?Will you..? (plur./form.)Gwnaf/Na wnafYes I will/no I won’t

Dim ond dwy eithriad sydd, lle bydd atebion Cymraeg yn wahanol i atebion llawn Saesneg:

1) Yr Amser Gorffennol

Est ti mas? Welon nhw’r gêm? - Do / Naddo
Did you go out? Did they see the game? - Yes / No

2) Cwestiynau Pwysleisiol

Mas est ti? Nhw yw’r gorau? Nyrs yw e? - Ie / Nage
Out you went? THEY are the best? A nurse he is? - Yes / No

Dyw cwestiynau pwysleisiol ddim yn dechrau gyda berf. Yn syml, byddwch chi'n gwneud cwestiwn pwysleisiol mewn unrhyw amser, drwy symud rhan y cwestiwn byddwch chi eisiau ei physleisio i ddechrau'r frawddeg. Pan fydd hyn yn digwydd, Ie / Nage fydd yr atebion, ni waeth beth fydd yr amser, e.e:

Y Presennol
Wyt ti’n nyrs?               Are you a nurse?                  Ydw/Nac ydw

Y Presennol - Gyda phwyslais
Nyrs wyt ti?                   A nurse you are?                  Ie/Nage
(enw yn gyntaf – 'nyrs' / 'nurse')

Y Gorffennol
Aeth Ffred?                     Did Ffred go?                        Do/Naddo

Y Gorffennol - Gyda physlais
Ffred aeth?                      Ffred went?                            Ie/Nage
(enw'n gyntaf – 'Ffred')

Yr Amherffaith
Oedd e yn y dre?               Was he in town?                 Oedd/Nac oedd

Yr Amherffaith - Gyda phwyslais
Yn y dre (r)oedd e?          In town he was?                  Ie/Nage
(adferf yn gyntaf - ‘lle’, hynny yw 'yn y dre' / 'in town')

There are two exceptions to Welsh answers being like full English answers:

1)         Past Tense yes and no, e.g.

Est ti mas?  Welon nhw’r gêm?  Do/Naddo
Did you go out?   Did they see the game?

2)         Emphatic yes and no, e.g.

Mas est ti?  Nhw yw’r gorau?  Nyrs yw e?   Ie/Nage
Out you went?   They were the best?       A nurse he is?

Emphatic questions are those which do not start with a verb. An emphatic question can be formed in any tense by putting what you are emphasising first. When this happens the answers are always Ie/Nage regardless of the tense, e.g:

Present
Wyt ti’n nyrs?     Are you a nurse?     Ydw/Nac ydw

Emphatic
Nyrs wyt ti?      A nurse you are?      Ie/Nage
(noun first - nurse)

Past
Aeth Ffred?     Did Ffred go?     Do/Naddo

Emphatic
Ffred aeth?     Ffred  went?       Ie/Nage
(noun first - Ffred) 

Imperfect
Oedd e yn y dre?    Was he in town?   Oedd/Nac oedd

Emphatic
Yn y dre (r)oedd e?  In town he was?   Ie/Nage
(adverb 1st - ‘where’)