I was reading my German book, and I founded a little statement that I wasn't capable to understand.
... Plötzlich geht das Licht aus.
Robert: "Wer ist da? Martha, bist du das?"
Can someone explain me the translation of the word 'das'.
I know that this word is the neuter article, but the translation is "Are you there?". The translation of the word 'there' in German is 'dort', 'da'. Is this 'das' some kind of particle?