If conditional If I was him or If I were him or If I was he or If were he? [closed]

Question

Which of the follow are correct and why? I've seen most of these constructions all over the internet but unsure the difference and if even correct at all. These are examples I chose because they're possibly something I understand and would more likely understand an answer that refers to my examples. If you don't understand or can't explain using my examples, then that's ok, just please don't refer me to other answers.

If I was him, I'd go.

If I were him, I'd go.

If I was he, I'd go.

If I were he, I'd go.

If it was sunny, I'd go.

If it were sunny, I'd go.

If it was my bike, I'd lock it up.

If it were my bike, I'd lock it up.

Answer 1

All the examples you gave are grammatical and perfectly fine. I disagree with @WS2, sentence (3) and (4) are perfectly fine, but yes "If I were him" is more commonly used. After a form of "to be", a pronoun that refers to the subject (I, in this example) should also be in the subject form (I; you; he, she, it; we; they). Nonetheless, in spoken English, many people would prefer to use "him".

Use 'if I was' for real situations that are in indicative mood. Used in a subjunctive mood, 'if I were' indicates an unreal situation. Something that can never happen. You are imagining a situation, that isn't true yet or cannot be true.

E.g.

You only use "If it was sunny" if it was really possible for it to be sunny and that it can happen, and you use "If it were sunny" if it cannot possibly be sunny and you are just imagining the situation.

Answer 2

All are grammatical, except for numbers 3 and 4.

You cannot say "If I were he..." nor "If I was he..." because "he" is a subject pronoun, and here it appears as the compliment. So you need the accusative pronoun - "him".