29/03/17 As, Because, Since and For
All four of these words can be used to refer to the reason for something. They are not used in the same way.
- as and since
As and since are used when the reason is already known to the listener/reader, or when it is not the most important part of the sentence. As- and since- clauses often come at the beginning of sentences.
- As it’s raining again, we’ll have to stay at home.
- Since he had not paid his bill,
his electricity was cut off.
As- and since- clauses are relatively formal; in an informal style, the same ideas are often expressed with so.
- It’s raining again, so we’ll have to stay at home.
Tomorrow, we’ll analyze TOMORROW and FOR.