A and an are called articles. They are special adjectives.
We use a before words that begin with a consonant sound.
![soccer](https://smrt.sfo2.cdn.digitaloceanspaces.com/core/LMLA/KIDS/ENGL115Kids/unit04/Grammar%204-4/4-4g1.jpg)
A puppy is playing soccer.
![banana](https://smrt.sfo2.cdn.digitaloceanspaces.com/core/LMLA/KIDS/ENGL115Kids/unit04/Grammar%204-4/4-4g2.jpg)
The monkey is eating a banana.
![train](https://smrt.sfo2.cdn.digitaloceanspaces.com/core/LMLA/KIDS/ENGL115Kids/unit04/Grammar%204-4/4-4g3.jpg)
A train is running on the railroads.
We use an before words that begin with a vowel: a, e, i, o, and u.
![apple](https://smrt.sfo2.cdn.digitaloceanspaces.com/core/LMLA/KIDS/ENGL115Kids/unit04/Grammar%204-4/4-4g4.jpg)
The mouse is eating an apple.
![rain](https://smrt.sfo2.cdn.digitaloceanspaces.com/core/LMLA/KIDS/ENGL115Kids/unit04/Grammar%204-4/4-4g5.jpg)
We use an umbrella in the rain.
![igloo](https://smrt.sfo2.cdn.digitaloceanspaces.com/core/LMLA/KIDS/ENGL115Kids/unit04/Grammar%204-4/4-4g6.jpg)
I built an igloo yesterday.