yes it is
That is the correct spelling of "tonight" (this evening).
If plural : Johnsons and Watsons Example: "The Johnsons are having dinner with the Watsons tonight." If plural possessive: Johnson's and Watson's Example: "The Johnson's dog dug up the Watson's vegetable garden." Both are correct depending on the context.
Tonight is a common noun so does not change dependant of tense. So something like 'Is is nice out here tonight.' is perfectly grammatically correct.
Esta noite.
Yes.
yes
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.".
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.
If plural : Johnsons and Watsons Example: "The Johnsons are having dinner with the Watsons tonight." If plural possessive: Johnson's and Watson's Example: "The Johnson's dog dug up the Watson's vegetable garden." Both are correct depending on the context.