No. "Him and I have been together." is not correct. The word him is an object pronoun, not a subject pronoun. The proper form of the sentence is "He and I have been together."
"Have been" is the correct phrase to use. "Have being" is not grammatically correct.
No, the sentence is not grammatically correct. It should be: "It had been a long time since I had written to you."
this one --> these ones (or merely these). seems fine to me.
This is not grammatically correct. The correct form is 'you do not know', or the abbreviated 'you don't know'.
Sure. It would also be grammatically correct to write He spoggled his nubbix on the goober. Grammatically correct and meaningful are not the same.
"Have been" is the correct phrase to use. "Have being" is not grammatically correct.
No, the sentence is not grammatically correct. It should be: "It had been a long time since I had written to you."
yes
The phrase "had already left" is grammatically correct. The phrase "had already been gone" is not grammatically correct.
grammatically speaking no. it would be: Have you been there already?
sorry i have been reading at about. What does it mean and is grammatically correct?
this one --> these ones (or merely these). seems fine to me.
"Not like that" can be grammatically correct, depending on the context.
Yes! That is grammatically correct!
Yes, 'for free', is grammatically correct.
"You could not have been" is grammatically correct. "You could not have been at the cinema last night, because I saw you in the park."
Yes, very correct.