Hi,

I was wondering if anyone could confirm something for me.
Are these all valid?

Raibh beoir uaim inné I wanted a beer yesterday
Ní raibh beoir uaim inné I didn’t want a beer yesterday

Tá beoir uaim I want a beer.
Ní beoir uaim I do not want a beer.

Teastaíonn beoir uaim I want a beer.
Ní theastaíonn beoir uaim I do not want a beer.

Thanks for the help.

No. Tá becomes níl in the negative. Bhí becomes ní raibh in the negative.

Some Irish irregular verbs have different absolute and dependent forms.

Tá - is the absolute form (used in the affirmative)
Fuil - is the dependent form (used in the negative and interrogative)

Ní means "not" and lenites the verb.
An is the interrogative particle and eclipses.
Ná is the negative interrogative particle.

Tá sé anso - he is here
Níl sé anso - he is not here, where "níl" is a fusion of "ní" and "fhuil". Fhuil is the lenited form of fuil, but in any case ní+fhuil = níl.
An bhfuil sé anso? - is he here?, where bhfuil is the eclipsed form of fuil.
Ná fuil sé anso? - isn't he here?

Bhí sé anso - he was here
Ní raibh se anso - he wasn't here
An raibh se anso? - was he here?
Ná raibh se anso? - wasn't he here?

Thanks djwebb2021 for your help.

It's really appreciated. Silly mistakes on my part but I couldn't reliably check this using a translator.

Thanks again