| FIRST MENTION | SECOND MENTION |
|---|---|
Use a when first mentioning or introducing a noun. |
Use the when mentioning a noun a second time – the noun is already identified. Both speaker and listener know which noun is being discussed. |
I have a dog. |
The dog is very playful. |
The dog has a ball. |
The ball is red. |
The dog likes to play a game. |
The game is fetch. |
|
I throw the ball. The dog brings the ball back to me. |