لغة انكليزية-الكورس الاول- المحاضرة 3

The indefinite articles (a and an)
1- Before singular count nouns
Australia is a continent
2- An is used before a words begin with vowel sound , except u and h, either a or an it depends on the sound
An uncle A university An hour A home
3- In a general statement
An island is a body of a land surrounded by water
3- Introduce a subject that has not been mentioned before
I have used a dc motor
4- With a certain numerical expression
A dozen , a couple a hundred , a third, a half , 10 dollar a day,
fifty miles an hour
5- With name of professions
He is an engineer
I am a biologist


Exercise
Correct the following sentences:

1- I used a transistors and diodes in my design.
2- I will spend couple days working on my project.
3- I was driving at 180 kilometers hour .

The definite articles is used:
1- Before something that is unique
the sun is shining
the sky is blue
the internet
2- When it is clear for both speaker and listeners which thing or person is referred to
Could you please open the door?
3- Before a noun mentioned for the second time
A bird flew into the classroom. The bird sat on my desk.
4- Before superlative adjective
The biggest island is Greenland.
The most beautiful coral island is very small.
5- Before the names of musical instruments
He plays the piano
6- Before singular noun representative of a class of things ( names of animals, Plants, inventions and parts of the body)
The dodo is an extict bird
The Rafflesia is the word’s largest flower
Graham bell invented the telephone
He hit him on the head

The definite articles is used:
1- Before something that is unique
the sun is shining
the sky is blue
the internet
2- When it is clear for both speaker and listeners which thing or person is referred to
Could you please open the door?
3- Before a noun mentioned for the second time
A bird flew into the classroom. The bird sat on my desk.
4- Before superlative adjective
The biggest island is Greenland.
The most beautiful coral island is very small.
5- Before the names of musical instruments
He plays the piano
6- Before singular noun representative of a class of things ( names of animals, Plants, inventions and parts of the body)
The dodo is an extict bird
The Rafflesia is the word’s largest flower
Graham bell invented the telephone
He hit him on the head
The definite articles is used:
1- Before something that is unique
the sun is shining
the sky is blue
the internet
2- When it is clear for both speaker and listeners which thing or person is referred to
Could you please open the door?
3- Before a noun mentioned for the second time
A bird flew into the classroom. The bird sat on my desk.
4- Before superlative adjective
The biggest island is Greenland.
The most beautiful coral island is very small.
5- Before the names of musical instruments
He plays the piano
6- Before singular noun representative of a class of things ( names of animals, Plants, inventions and parts of the body)
The dodo is an extict bird
The Rafflesia is the word’s largest flower
Graham bell invented the telephone
He hit him on the head
The definite articles is used:
1- Before something that is unique
the sun is shining
the sky is blue
the internet
2- When it is clear for both speaker and listeners which thing or person is referred to
Could you please open the door?
3- Before a noun mentioned for the second time
A bird flew into the classroom. The bird sat on my desk.
4- Before superlative adjective
The biggest island is Greenland.
The most beautiful coral island is very small.
5- Before the names of musical instruments
He plays the piano
6- Before singular noun representative of a class of things ( names of animals, Plants, inventions and parts of the body)
The dodo is an extict bird
The Rafflesia is the word’s largest flower
Graham bell invented the telephone
He hit him on the head