zero article (O) is used for uncountable nouns. It is often used to describe what something is made of.
Put a/an or nothing (O)
Jakes’ father makes _(O)_ films
I need new bicycle.
I never drink milk.
Jane is old friend.
Their house is made of wood.
I often listen to music.
That child wants new shoes.
My room has got really big window.
We often use a/an to talk about something for the first time; and the when we talk about the person or thing again.
A man walked up to a policeman. The man took out a map and asked the policeman for help.
Talking about something / somebody both speaker and listener know about.
Could you close the door?
(You know which door.)
He looked at the moon.
(There’s only one.)
She came on the 8.15 train. (You know which train – I’m telling you.)
How much is the red coat? (You know which one – I’m telling you.)
THE A/AN
Could you open a window?
(I don’t mind which one.)
Let’s go and see a film. (I don’t mind which one.)
He looked at a tree. (There may be more than one, and the one he’s looking at is not specified.)
I’ve just bought a new coat.
(Not specific.)
Superlatives and ordinal numbers – which article?
Mount Everest is tallest mountain.
Yesterday was hottest day of the year.
We are fastest runners in the group.
What time is first train tomorrow?
Who was last person to leave the classroom?
Add a/an or the
This is a true story. Last year I went into 1
big sports shop because I wanted 2 sports bag. 3 assistant came up to me, and I told him what I wanted. 4 assistant brought me three different bags. I chose 5 smallest one and paid for it. 6 assistant put 7 bag in 8
large plastic bag. He did so, but he looked very unhappy as I walked out of 9 shop.
We use a/an when we say what something is, or what job somebody does: