Dyn ni wedi dysgu hoffwn i - I would like. Nawr, dyn ni'n mynd i ddysgu dweud gallwn i - I could a dylwn i - I should.
| Statement | Question | Negative |
| I - Gallwn i | Allwn i? | Allwn i ddim |
| you - Gallet ti | Allet ti? | Allet ti ddim |
| he/she - Gallai fe / hi | Allai fe / hi? | Allai fe / hi ddim |
| we - Gallen ni | Allen ni? | Allen ni ddim |
| you - Gallech chi | Allech chi? | Allech chi ddim |
| they - Gallen nhw | Allen nhw? | Allen nhw ddim |
Mae hi'n braf heddiw - gallen ni fynd i'r parc.
The weather's fine today - we could go to the park.
Gallwn i wneud brechdanau i ni.
I could make sandwiches for us.
Gallai'r plant chwarae ar y siglen.
The children could play on the swing.
Gallet ti fwydo'r hwyaid.
You could feed the ducks.
| Statement | Question | Negative |
| I - Dylwn i | Ddylwn i? | Ddylwn i ddim. |
| you - Dylet ti | Ddylet ti? | Ddylet ti ddim. |
| he/she - Dylai fe / hi | Ddylai fe / hi? | Ddylai fe / hi ddim. |
| we - Dylen ni | Ddylen ni? | Ddylen ni ddim. |
| you - Dylech chi | Ddylech chi? | Ddylech chi ddim. |
| they - Dylen nhw | Ddylen nhw? | Ddylen nhw ddim. |
Mae hi'n bwrw glaw heddiw. Dylen ni aros yn y tŷ.
It's raining today. We should stay in the house.
Dylet ti lanhau'r gegin.
You should clean the kitchen.
Dylai'r plant gymoni'r teganau.
The children should tidy the toys.
Dylwn i smwddio'r crysau.
I should iron the shirts.