Article
The
The definite article the is used countable and uncountable nouns.
the music
the woman
the trees
The is used:
with nouns witch are unique (the sun, the moon, the Earth)
with the name of rivers (the Nile) , seas (the Black sea, oceans (the Indian Ocean) moutain ranges (the Pyrenees), deserts (the Gobi), groups of Islands (the Canary Island) and countrles when they include words such as state, kingdom, republic, (the United States)
with the names of musical instrumets (the piano, the saxophone) and dances (the tango)
with the name of hotels (the Sheraton hotel), theatrea/cinemas(the Odeon Theatre) ships (the Queen Mary) organisation (the UN), newspapers (The Times) and museum (the Louvre).
with nationality words (the Belgians) , and names of families (the Johnsons)
with the world morning,afternoon and evening (He goes home in the evening)
with the words station, shop, cinema, pub, library, city, village)
with historical periods/events (the Stone Age, the Middle Ages, The First World War) But:World War 1.
with the words only ,last, first (used as adjectives) He was the last person to arrive.
with adjectives/adverbs in the superlative form.(She is the most intelligent woman I've ever met.
An
+vowel(a,e,u,o,i,etc)
an honest man
an easy job
an apple
A
+ consonant sound(b,d,g,l,t,p,etc)
a game of gold
a human emotion
a cat
A/an is used:
with singular countable nouns after the verb to be to say what someone/something is
He's a pilot
It's a torch
with the verb have(got)
Mary has(got) a car
in certain expressions when we want to show how often we do something
she goes shopping twice a month