Yes.
Yes it is.
yes
yes it is
It is more grammatically correct to say "tonight" or "tomorrow" without the preposition "on." So, you would say "I will see you tonight" or "I have a meeting tomorrow."
That is the correct spelling of "tonight" (this evening).
Yes, the sentence "It's going to be a good sleep for me tonight" is correct grammar.
오늘밤 = tonight
"My friend and you are going to the movies tonight." is a proper use of the term. To see if this is correct, just take the 'My friend and' part out of the sentence, and see if it makes sense saying "You are going to the movies tonight.".
your bum
The correct grammar for the sentence is: "It's going to be good for me tonight." In this corrected sentence, "It's" is the contraction for "It is," and the word "good" should be used instead of "a good."
Simply say exactly that - You looked beautiful tonight.