Shakespeare did not use the word "frequently". However he often used the perfectly modern and somewhat more straightforward "often".
Shakespeare would say "Wherefore art though?"
Shakespeare spoke English, you would say 'our'.
"My God, I'm old!"
He would say guess. As in this line from Titus Andronicus: "My lord, I know not, I, nor can I guess".
He would say, "the best". And he does say it, a lot. E.g. "Murder most foul, as in the best it is." or "thou art the best of the cutthroats".
If he said it, he would say it with an accent like that we associate with pirates, because that is the accent they had back then. But then he may not have said it, as he doesn't use it in any of his plays. Of course, if you are asking how Shakespeare would say that something was really really good, he might well use the word "excellent" as in "A fellow of infinite jest, of most excellent fancy". "Excellent" was one of Shakespeare's favourite words.
Shakespeare You Say - 2011 was released on: USA: 2011
Frequently. Hamlet is one of the bloodiest plays in all of Shakespeare.
Shakespeare's language was English. "And" in English is "and".
Linda Richman
Only her close associate would know and they are unlikely to say.
When people say Shakespeare they mean William Shakespeare the playwright. There was only ever one of him.