"That is not" is "das ist nicht" in English.
"ist das dein" basically means "is this yours"
"What is this?"="Was ist das?" (if it`s meant as a question).
Was ist das = what ist that
"Das ist gut" means "This (or it) is good." in English. It's basically said to show approval of something, or agreement.
Translated from the German, it means "how much is that?", implying usually, "how much does that cost?"
Translated from the German, it means "that is outstanding".
das ist literally translates to 'that is' you woudl not use it on its own but in a sentance. i.e. Das ist super! That ist super! or Das ist mein hund. That is my dog
Naja, ich liebe, das ist mein Leben translates as Well, I love, that's my life.
Ja, das ist urkomisch = yes, that is hilarious/hysterical
Das ist Leben = That's life! (although the more common version is So ist das Leben).
"Welcher Tag ist das?" = "What day is it (today)?"