I like ice cream.
Yes, 'you were correct' is perfect grammar. An example sentence: You were correct when you said that a tomato is a fruit.
This is an incomplete sentence,thus being improper grammar.
Yes. Perfect. The noun is an understood you and it is a complete sentence.
It is not actually a sentence. It is a complete subject with no predicate. A sentence would be "This is an example of what love is supposed to be."
Yes. For example, What did she point at ? However, do not use 'at' with 'where.'
Have/has augmented.
It seems like your sentence is missing a subject. If you can provide more context or an example, I'd be happy to help you with the grammar.
The grammar of this sentence is beyond phenomenal.
no_____If the sentence is You do do that (meaning You are in the habit of doing that) the grammar is perfectly correct and the sentence 'does have correct grammar'.
Example sentence - The old mill made a perfect background for our family portrait.
"i did something wrong but the expert rectified it" (add your own grammar!)
He had lied about his whereabouts to the police.