We use a and an to talk about a singular countable noun.
我们用 a 和 an 来指单数可数名词。
a flowerpot, a train, a parrot, a plate
an umbrella, an earthquake, an old lady, an igloo
*** We use "an" for words that begin with
vowels ('a', 'e', 'i', 'o', 'u')
The is used:
** when we speak of the same thing again:
He gave her a bouquet of roses. The roses were red.
** when we are clear about the person or thing that we are
My mother bought some fruits from the market.
** when there is only one such thing:
e.g. The sun rises in the east.
** in front of the superlative form of adjectives:
e.g. It's the happiest day in my life!
Articles are not used:
** before an uncountable noun when we are talking about
something in general.
e.g. I like (-) pizza.
** before the name of a game.
e.g. The boys play (-) football in the evening.
** before the name of a meal.
e.g. I had porridge for (-) breakfast.
** before proper nouns.
e.g. (-) Singapore is to the north of (-) Malaysia.