- We use
A/AN when we talk about something for the first time. We use
THE if we mention it again .
Example: We've got .... cat and ... alpaca. ... cat is black.- we use THE when it's clear what we're talking about, perhaps because there is only one of them. Example: Let's go to ... park
- We use A to say what someone's job is.
example: My uncle is ... taxi driver
- We don't use an article when we are making a generalisation.
I don't like ... spicy food --> NOT I don't like ... spicy food.
We use A to mean 'per or 'in each
example: She earns 10 euros ... hour