A / AN

• 
• Remember to use a / an with things in the singular.

I have a car
I have an iPod

• a / an are used for female and male

My sister has a boyfriend

I have a girlfriend

• When the number isn't important, use a.

They have a house in Spain

• Use one only when the number is important.

They only have a car, not two.

• a is only singular

They're keys

*Be careful with the pronunciation of a / an. Put the stress on the noun. 

EXERCISE 1

EXERCISE 2