A Brief Guide to Irish Grammar

The Definite Article

英語	アイルランド人
the (masculine + feminine singular)	an
the (masculine + feminine plural)	na

In English the indefinite article is either 'a' or 'an', but there is no indefinite article in Irish.

例

Madra = dog

Madra = a dog

With nouns used in a general sense:
An bhean the woman
With the names of languages:
An Ghaeilge (the) Irish
With the names of most countries:
An Fhrainc (the) France
With the names of meals and seasons
An dinnéar the dinner,
An samhradh the summer
With the names of companies, shops, bars, restaurants, streets, TV networks and channels, computer programs, sports teams, etc. An t-Oireachtas

The masculine genitive article is “an”

Oifig an phoist = post office (office of the post)

*we don't double up on articles; one will suffice

The feminine genitive article is “na”

Múinteoirí na scoile = teachers of the school

The plural genitive article is “an”

Ainmneacha na bpáistí = names of the children