De man die daar loopt is mijn vader.
English: The man who is walking there is my father.
Relative pronouns in Dutch (betrekkelijke voornaamwoorden) are words like 'die', 'dat', and 'wie' used to connect two clauses by referring to a noun mentioned before.
Use Dutch relative pronouns to join a main clause with a relative clause that gives more information about a noun. They refer back to something or someone mentioned earlier.
De man die daar loopt is mijn vader.
English: The man who is walking there is my father.
Het boek dat ik lees is spannend.
English: The book that I am reading is exciting.
De mensen met wie ik werk zijn vriendelijk.
English: The people with whom I work are friendly.
Dit is het huis waar ik woon.
English: This is the house where I live.