I saw a dog.
A dog is mentioned for the first time, so the listener cannot identify it yet.
Blocos de sentido
Lê a frase por blocos de sentido, não palavra a palavra.
Choose between indefinite, definite, and no article based on shared knowledge, countability, and specificity.
ARTICLE = listener logic: can they identify it?
Start with the noun:
1) one countable thing (one/two possible)
├─ new/not identified → a/an opens
│ I saw a dog.
└─ known/identified → the points
The dog was barking.
2) many things or uncountable stuff/idea
├─ general meaning → Ø (no article) widens
│ I like dogs.
│ Water is important.
└─ specific/identified → the points
The dogs next door bark at night.
The water in this bottle is cold.
Use a/an to introduce one countable thing, the when the listener can identify it, and no article for general many/stuff ideas.
I saw a dog.
A dog is mentioned for the first time, so the listener cannot identify it yet.
Lê a frase por blocos de sentido, não palavra a palavra.
The dog was barking.
After the first mention, use the for the same dog.
Lê a frase por blocos de sentido, não palavra a palavra.
I like dogs.
Dogs means dogs in general, not a specific group.
Lê a frase por blocos de sentido, não palavra a palavra.
She is a doctor.
Singular countable job nouns normally need a determiner.
Lê a frase por blocos de sentido, não palavra a palavra.
I waited an hour.
Article choice follows sound, not spelling.
Lê a frase por blocos de sentido, não palavra a palavra.
She studies at a university.
University starts with a vowel letter but a consonant sound, so use a.
Lê a frase por blocos de sentido, não palavra a palavra.
We bought furniture.
Furniture is uncountable here, so do not use a.
Lê a frase por blocos de sentido, não palavra a palavra.
There’s a café on the corner.
A café is introduced as one café, not yet known to the listener.
Lê a frase por blocos de sentido, não palavra a palavra.
The café opens at seven.
The refers back to the café introduced earlier.
Lê a frase por blocos de sentido, não palavra a palavra.
Where is the station?
The station means the relevant or expected station in that place.
Lê a frase por blocos de sentido, não palavra a palavra.
Dogs are friendly.
This means dogs as a category.
Lê a frase por blocos de sentido, não palavra a palavra.
The dogs next door bark at night.
This is not about all dogs; it is about a known group of dogs.
Lê a frase por blocos de sentido, não palavra a palavra.
Water is important.
Water means water generally, not a specific amount.
Lê a frase por blocos de sentido, não palavra a palavra.
The water in this bottle is cold.
The is used because the water is limited by in this bottle.
Lê a frase por blocos de sentido, não palavra a palavra.
Is there a pharmacy near here?
The speaker asks for any pharmacy, not a known pharmacy.
Lê a frase por blocos de sentido, não palavra a palavra.
I don’t have a car.
Negatives do not remove the need for a/an with singular count nouns.
Lê a frase por blocos de sentido, não palavra a palavra.
I bought new phone.
Phone is a singular count noun, so it needs a determiner.
I bought a new phone.
A new phone is the correct singular count noun phrase.
Lê a frase por blocos de sentido, não palavra a palavra.
I like the music.
This is only a mistake when the speaker means music in general.
I like music.
Music means music generally, so no article is used.
Lê a frase por blocos de sentido, não palavra a palavra.
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