"That is nice."

Translation: Tá sé sin go deas.

[CaspervanZyl]

Can anyone explain the "go" in this sentence? Not sure why it is necessary.

[galaxyrocker]

There's a few adjectives (six big ones) that require go when use as a predicate: deas, maith, olc, iontach, álainn, dona. Mostly subjective things.

[Trodaire]

I came here to ask that exact question. Thank you, Galaxyrocker, for answering it.

[mairedubh]

Why can't I say Is deas é sin?

[AdamCamero3]

not ''Tá sin go deas''?
I'm not sure if this is grammatically correct but I certainly hear it

[soupandbread]

Why not 'is deas sin'? Like 'is maith sin' but nice instead of good.

[FearAsAnt-Oilean]

is "Sin e go deas" not acceptable?

[moryssa33]

I'm still not quite getting Ta/Is... the last sentance i had was "Is fior é sin" -- "That is true". So for this one, I put "Is deas é sin". Why is one constructed with Tá and the other with Is?

[19O492554]

Is deas é sin isn't really wrong, but it is generally more emphatic than tá sé sin go deas. It should probably have been accepted as an answer for this exercise.