Mary and we. If Mary was not involved you wouldn't say "us" (i.e. "us like to go shopping").
Yes, "she treated us to a great dinner" is grammatically correct English.
"That was wrong" is a grammatically correct sentence.
Yes, Almighty God is grammatically correct.
Yes, it is grammatically correct.
This sentence is grammatically correct.
Yes, very!
The sentence "Is Mary not Happy" is correct grammatically as a question. It defines Mary as the subject and not happy as the object. In the other sentence, though grammatically correct, it could be confusing. Not Mary could be construed as all people but Mary. I would use the first sentence, as it is clearest.
Yes, the sentence "Mary is able to make a cake with assistance" is grammatically correct. It clearly conveys that Mary can make a cake, but she requires help to do so. The structure is straightforward, and the meaning is clear.
It is grammatically correct, but not good English because things cannot be in despair. Use "desperate."
"Send your response to Mary and me" is correct.It is always incorrect to say "to Mary and I" in any context.The easiest way to keep track is to substitute "we" or "us" for "Mary and I/me." "Mary and I" is equivalent to "we"; "Mary and me" is equivalent to "us."We went to the store ⇒ Mary and I went to the store.Send it to us ⇒ Send it to Mary and me.That will guide you naturally to the correct selection, except in the case of predicate nominatives. For example, "It is we" is grammatically correct, so you would substitute "It is Mary and I," but most people think either of those sounds odd.
No. Us is the objective case, not the nominative case (we). It should be: We teens need more sleep. Or: We, as teens, need more sleep than others.
Yes, "she treated us to a great dinner" is grammatically correct English.
"Not like that" can be grammatically correct, depending on the context.
Yes! That is grammatically correct!
Yes, 'for free', is grammatically correct.
This is not grammatically correct. The correct form is 'you do not know', or the abbreviated 'you don't know'.
"That was wrong" is a grammatically correct sentence.