It doesn't look grammatically correct, but not everything that is correct looks that way. When you break the sentence apart, there is nothing missing. It has a subject and a predicate.
Although "You are the winner" may be more appealing to most people, I do not believe there is anything grammatically incorrect with your example, as ugly as it may sound.
It is correct. You can be be a subject or an object pronoun.
subject - You are the winner!
object - The winner is you!
I think it would be the winner was she
"That was wrong" is a grammatically correct sentence.
This sentence is not grammatically correct. For the sentence to be grammatically correct, the space between "in" and "to" would have to be removed. Therefore the sentence should read "They are into skating."
The sentence is grammatically correct.
The sentence "Rhoda's Crazy" is not grammatically correct. It is missing a verb to make a complete sentence.
Yes, it is grammatically correct.
'What a drunkard you are' is a grammatically correct English sentence.
That sentence is grammatically correct.
Yes, the sentence is grammatically correct.
This sentence is grammatically correct.
This sentence is grammatically correct.
Yes, the sentence "his hand is filthy" is grammatically correct.