Could | couldn't
B' urrainn | Cha b' urrainn
We first saw urrainn (ability, power) in A2 Cuspair 12 when we learned about iomlaid (inversion) with abairtean mòdail (modal phrases). These are the phrases where we say there is a miann (desire), comas (ability) or riatanas (necessity) to do something.
Remember we only get inversion after modal phrases like 'S urrainn if the verbal noun and noun are directly linked, with no preposition between them. If a preposition is needed to connect them, then there is no inversion.
Cha b' urrainn
As we saw in Cuspair 2 with 'S e and B' e , there are only two tenses of Is , the present tense form Is | Cha and the conditional or past tense form Bu | Cha bu .
These are the forms we combine with urrainn to get its present and conditional or past tense forms.
Here is the gnìomhair fillte (compound verb) urrainn in the present tense is
IS URRAINN
An urrainn? | Can, be able? | ✅ Is urrainn | Can, be able |
Nach urrainn? | Can't, not be able? | ⛔ Chan urrainn | Can't, not be able |
and in the conditional or past tense b' :
B' URRAINN
Am b' urrainn? | Could, would be able? | ✅ B' urrainn | Could, would be able |
Nach b' urrainn? | Couldn't, wouldn't be able? | ⛔ Cha b' urrainn | Couldn't, wouldn't be able |