If he/she/it/I were can be used instead of if he/she/it/I was and it is considered to be more correct.
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If he were an actor, he would be famous.
Conditional sentence type 3. The verb in the “if clause” should be in the past perfect tense, the verb in the “main clause” should be in the perfect
conditional tense. The time is past and the condition can’t be fulfilled. Because the action in the “if clause” didn’t
happen. It means both actions were not performed.
-
If I had known that you were coming, I’d have met you at the station. (but I didn’t know, so I didn’t meet you
at the station)
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If he had tried to leave the country, he would have been stopped at the frontier (but he didn’t try, so he
wasn’t stopped)
