You're using the predicate nominative, so the pronoun should technically be in the nominative case (i.e. "If you were I"), but English speakers almost universally say and write "If you were me." "If you were I" sounds very stilted and many grammarians concede that the rule is changing.
no it is not grammatically wrong but it is better to ask where are you if you want to use it in question...
"That was wrong" is a grammatically correct sentence.
Yes, this is grammatically correct.
Yes, it is grammatically correct.
Yes, Almighty God is grammatically correct.
Yes. It is grammatically sound.
"Not like that" can be grammatically correct, depending on the context.
Yes! That is grammatically correct!
Yes, 'for free', is grammatically correct.
No, it is not grammatically correct to say "what a fun." It should be corrected to "What fun!" to make it grammatically accurate.
"That was wrong" is a grammatically correct sentence.
'What a drunkard you are' is a grammatically correct English sentence.
Yes, this is grammatically correct.
Yes, Almighty God is grammatically correct.
"Off you go" is not grammatically incorrect.
Yes, it is grammatically correct.
no it is not grammatically wrong but it is better to ask where are you if you want to use it in question...