a. Improbable Situations
1.
WRONG : If the meeting would be cancelled, they would ring.
CORRECT : If the meeting was cancelled, they would ring.
2.
WRONG : If I would do it , I would do it this way.
CORRECT : If I did it, I would do it this way.
When referring to something that is possible but unlikely to happen, we use past tense for the if clause, and would / could for the main clause.
b. Imaginary Situations
WRONG : If I am you, I will take the offer.
CORRECT : If I were you, I would take the offer.
CORRECT : If I was you, I would take the offer.(Less Formal)
When talking about imaginary situations, we use past tense in the if clause and would/could in the main clause.
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