Was ist das = what ist that
Was ist daß = What is this
Das ist = That is.
er ist = he is
"That is not" is "das ist nicht" in English.
er ist ein = he is a... (sentence fragment)
'ist' basically means 'is'' in German. For example, 'it ist good!' means 'it is good!' Hope this helped! ( :
wie spaet ist es, means "how late is it?" which can mean "what time is it?"
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
I
"Welcher Tag ist das?" = "What day is it (today)?"
"ist das dein" basically means "is this yours"