he/she/it was/has been
"How have you been?" = "Wie ist es dir ergangen?"
Das ist = That is.
"That is not" is "das ist nicht" in English.
"ist das dein" basically means "is this yours"
The sentence wie ist nicht deine Schuld dass du verdammt auf meine Mädchen gewesen schlagen seitdem Sie das diese Gruppe bekam is pure gobbledegook and it's impossible to offer any kind of translation with any level of certainty but I think what you're trying to ask is How is it not your fault that you have been damned well hitting on my girl (ever) since she joined the group.
wo ist meine Armbanduhr = where is my wristwatch
"Ist gut" means "is good" in English.
"There has been a"
Translated from the German, this means "where is my book?".
"Das ist gut" means "This (or it) is good." in English. It's basically said to show approval of something, or agreement.
"Wo ist" in German means "where is" in English. It is used to ask for the location of something or someone.
It means, "Where is my brother?".