![mechanic](https://s3.amazonaws.com/smrtenglish.com/core/ENGL115AUTO/unit05/5-1g1.jpg)
There's an order to change some oil for you.
In English, it is important to understand the difference between nouns you can count, and nouns you can’t count:
Countable Nouns
Countable nouns are things you can count. With these nouns, it is possible to say a/an, one, two, three, etc:
- person
- computer
- car
- vehicle
- apple
- egg
- man
- girl
![computer](https://s3.amazonaws.com/smrtenglish.com/core/ENGL115AUTO/unit05/5-1g2.jpg)
There's a laptop on the table.
![woman driving](https://s3.amazonaws.com/smrtenglish.com/core/ENGL115AUTO/unit05/5-1g3.jpg)
She has two cars.
![race](https://s3.amazonaws.com/smrtenglish.com/core/ENGL115AUTO/unit05/5-1g4.jpg)
Three girls are racing.
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