It is what you will hear in informal speech, but is not correct for formal writing. Try:
"That is the girl.", "That is the woman.", "That is my sister.", "That is my wife.", etc.
The grammatically correct form of the sentence 'That is her' is 'That is 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.
'What a drunkard you are' is a grammatically correct English sentence.
Yes, it is grammatically correct.
That sentence is grammatically correct.
Yes, the sentence is grammatically correct.
This sentence is grammatically correct.
This sentence is grammatically correct.
Yes. A grammatically correct sentence (to begin with) has to have a subject (int this case, hand) and a verb (is). The sentence does need to be capitalized and punctuated correctly though...
No it should be "You were not there"...