Questions & Answers about Ik weet het niet.
Why does niet go at the very end of the sentence?
In Dutch, when you negate a sentence that has a specific direct object, like the pronoun het (it), the word niet must come after that object. You cannot put it immediately after the verb like in English, so Ik weet niet het is completely incorrect.
Could I leave out het and just say Ik weet niet?
Not really. While English speakers often just say "I don't know," Dutch speakers almost always include an object to represent the information they are missing. You will hear Ik weet het niet (I don't know it) or Dat weet ik niet (I don't know that).
Why do we use weet here instead of ken? Don't they both mean "know"?
Yes, but they are used in different situations. Weten (the verb weet comes from) is used for knowing facts, answers, or information. Kennen is used for being familiar with people, places, or things (like a book or a language). Because you are talking about a missing fact here, you must use weten.