Can anyone tell me if in Gaelic, when you're making a complex sentence, is it like English(noun and then adverb/adjective), or is it like Spanish (Adverb/adjective and then the noun)? I am confused, because after studying Spanish for two years, I realize how different sentence structure can be in a foreign language.

I appreciate any responses.

Adjectives come after a noun:

bean mhór * a big woman
fear mór a big man
cnoc ard a high hill
lá breá a fine day
oíche bhreá * a fine night

* feminine nouns lenite the following adjective.

Some adjectives are placed before the noun, in which case they become part of a single compound word and usually lenite the following noun:

seanmhadadh an old dog
seancharr an old car
drochphingin a bad penny

Thank you so much! That really helps me a lot.

And what exactly does Níl mean?

'Níl' means 'isn't'. It is the negative form of 'tá'.

An bhfuil pláta ar an mbord? Is there a plate on the table?

Tá, tá pláta ar an mbord. Yes, there is a plate on the table.

Níl, níl pláta ann. No, there isn't a plate.

(Notice that there is no word for 'yes' or 'no' in Irish. Instead the verb is repeated.)