Speaking simply, all the things / nouns which are of same kind, but existed in more quantity and their names starting with a consonant sound must be preceeded by "a"..
a potato a pen a car a mirror a zebra a goat a bunch a boy a song a deer a kick
all the things which are of same kind but existed in more quantity and their names starting with a vowel sound must be preceeded by "an"....
an umbrella an empathy an aeroplane an event an apple an elephant an ice cream an owl an animal
The words like University, Union, Universe, etc although they are starting with a vowel , we pronounce them with a consonantal sound... so, we should not keep "an" before...
The words like "Honesty" though they are starting with a consonant, we keep "an" before it... as they are pronounced with a vowel sound in beginning.
The things which are unique in nature, or they exist as only one (single) must be preceeded by THE
The Universe The Earth The moon The sun The Time
Articles should not be preceeded the names of people and countries..
we should not say The Rama , The India
cases :
a girl sat on a wall
(here we generalising both the nouns and not giving importance to either girl or wall)
The girl sat on a wall
(Here we are particularly telling about GIRL and generalising the noun WALL)
a girl sat on the wall
(here we are generalising the GIRL and talking mainly about the WALL)
The girl sat on the wall
(Here we are equally giving importance to both GIRL and WALL)
a potato a pen a car a mirror a zebra a goat a bunch a boy a song a deer a kick
all the things which are of same kind but existed in more quantity and their names starting with a vowel sound must be preceeded by "an"....
an umbrella an empathy an aeroplane an event an apple an elephant an ice cream an owl an animal
The words like University, Union, Universe, etc although they are starting with a vowel , we pronounce them with a consonantal sound... so, we should not keep "an" before...
The words like "Honesty" though they are starting with a consonant, we keep "an" before it... as they are pronounced with a vowel sound in beginning.
The things which are unique in nature, or they exist as only one (single) must be preceeded by THE
The Universe The Earth The moon The sun The Time
Articles should not be preceeded the names of people and countries..
we should not say The Rama , The India
cases :
a girl sat on a wall
(here we generalising both the nouns and not giving importance to either girl or wall)
The girl sat on a wall
(Here we are particularly telling about GIRL and generalising the noun WALL)
a girl sat on the wall
(here we are generalising the GIRL and talking mainly about the WALL)
The girl sat on the wall
(Here we are equally giving importance to both GIRL and WALL)