Antonija wrote: |
Can you suggest a better way of putting it?
A man had already been aquainted with the oil/had known for oil for a long time and used it for different/various purposes. |
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Being a
cquainted normally refers to knowing a person.
"I am acquainted with Fred but do not know him very well."
Your sentence would be better as:
"Man has known about oil for a long time and has used it for various purposes."
OR
"Man has known about oil for a long time and has put it to various uses."