"This is absolutely magnificent you love the family tree" is meaningless. It might perhaps be "It is magnificent that you love the family tree" which is grammatically correct. But is a very peculiar thing to call love of a family tree "magnificent" because a family tree is a list of parentage, never known ever to be "loved".
"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."
Yes, it is grammatically correct.
This sentence is grammatically correct.
ABSOLUTELY NOT! He and she were taking the dog for a walk. The pronoun 'her' is used for the object of a sentence or a preposition only.
"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.
Yes, it is grammatically correct.
'Rhoda's crazy' is grammatically correct.
'What a drunkard you are' is a grammatically correct English sentence.
That sentence is grammatically correct.
This sentence is grammatically correct.
This sentence is grammatically correct.
No it should be "You were not there"...
This sentence is grammatically correct.
Short answer : Yes and not impolite at all, as suggested below. This is to be handled by you grammatically correct? requires inverted commas to be correct. It should be written as: "Is this sentence "This is to be handled by you." grammatically correct?" The sentence is correct but not very polite; it would be simpler to say "You are to handle this"