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SINCE FOR AND FROM
These words denote time and are used to express time.
These words are used both as a Preposition and a Conjunction. As a preposition ‘Since and For’ are used in Perfect Continuous Tenses.
AS A PREPOSITION
SINCE
It is used to express a point of time. For example, since 2001, since morning, or since childhood etc.
She has been painting since morning.
They have been doing their work since yesterday.
FOR
It is used to express duration of time. For example, for two hours, for three days etc.
They have been working for two days.
She has been painting for two hours.
It is also used for some purpose. For example:
Let us go out for a walk.
It is also used to express some exchange. For example:
He sold his book for fifty rupees.
FROM
It is used to express time extended from a point. For example from Monday, from yesterday etc.
I shall start my work from tomorrow.
He will join the class from Friday.
It is used to express duration of time. For example:
The doctor will be available from 9 a.m. to 1 p,m.
It is used to tell about source of something. For example:
We get light from the sun.
He took out a page from his book.
It tells about movement towards a place.
He came from the school.
He has gone from this place.
AS A CONJUNCTION
‘Since and For’ give the meaning of reason or because. For example :
He could not go to school since he is ill.
I did not go to office for I am unwell.
‘From’ shows relation between things. For example :
I could not understand from all that he said.
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