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whats the different between ..... I used by this formolla or I used with this formolla?witch one is correct? when we used them?
Jun 3, 2013 9:29 PM
Answers · 3
I'm not sure what you're really asking, but I'll try: "I used this formula." The question is "what did you use?" so no preposition is needed. Use is a transitive verb. To make it passive, "This formula is used by me." The subject is "this formula", but the verb pattern tells us what happens to the subject.
June 3, 2013
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English, Persian (Farsi)
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