Questions & Answers about Das ist meine letzte Frage.
Why do we use Das at the beginning instead of Die, since Frage is feminine?
When pointing something out or introducing it with the verb sein (to be), German always uses the fixed neuter pronoun Das, no matter the gender of the noun that follows. You would only use Die if you were referring back to a question already mentioned in a previous sentence.
Why does letzte end in -e here?
Frage is a feminine noun, and in this sentence, it is in the nominative case. After a possessive word like meine, the adjective gets the ending -e for feminine nominative nouns.
Does letzte mean last as in final, or last as in previous?
It can mean both! Just like in English, context tells you which one it is. Here, Das ist meine letzte Frage almost certainly means the final one. If you wanted to talk about a previous question, you would likely use past tense, such as Meine letzte Frage war... (My previous question was...).
If I wanted to say 'That is my last question in 2023', how would I apply the current lesson's rules about years to this sentence?
You have two choices. You can add the year with zero preposition: Das ist meine letzte Frage 2023. Or, you can use the full phrase: Das ist meine letzte Frage im Jahr 2023. Remember that you can never translate the English 'in' directly—saying in 2023 is always grammatically incorrect in German!