Learn Dutch: Ken je mijn zus? Die woont hier. - Do you know my sister? She lives here.

You could definitely say Zij (or Ze) woont hier. However, in spoken Dutch, it's very common to use the pointing word die to refer back to someone you just introduced. It translates perfectly to "she" or "he" here, but feels a bit like saying "That one, she lives here."

Doesn't die usually mean "that" or "those"?

Exactly! Normally, die points to a specific noun (like die auto for "that car"). Because zus is a de-word (de zus), you can use die on its own as a pronoun to point right back to her. It makes conversational Dutch flow very naturally.

Why use Ken for "know" instead of Weet?

Dutch has two verbs for "to know". You use kennen (Ken) when you are familiar with a person, a place, or a thing—like knowing someone's sister. You use weten (Weet) when you know a fact, such as knowing where the sister lives.

Why is there no 't' at the end of Ken?