The indefinite article is the a is the same for all genders.
a boy, a girl, a cat
The indefinite article has no plural form.
a boy - boys
We use an if the following word starts with a vowel.
|the following word starts with a consonant||the following word starts with a vowel|
Mind the pronunciation of the following word.
|This u sounds like a consonant, so we use a.||This an.sounds like a vowel, so we use|
- before phrases of time and measurements (per week/weekly)
|We have English 4 times a week.|
|I go on holiday twice a year.|
|Our car can do 220 kilometres an hour.|
|Tomatoes are $2 a kilo.|
- before phrases of jobs
|My father is a car mechanic.|
- with a noun complement
|He is a good boy.|
- before phrases of nationality
|Bruce Springsteen is an American.|
|We need half a pound of sugar.|
|This is quite a good story.|