Verbs with Fixed Prepositions (vaste voorzetsels)
Ik wacht op de bus. (I'm waiting for the bus.)
What it is
A fixed-preposition verb always pairs with one particular preposition, chosen by the verb itself rather than by meaning. That preposition is a normal, independent word: it doesn't fuse to the verb, and it never moves to the end of the sentence on its own. That makes it different from a separable verb like opzoeken, where the attached piece is part of the verb itself. Here, op in wachten op is just a preposition doing its normal job, introducing an object.
- houden van: Ik houd van muziek. (I like music.)
- denken aan: Zij denkt aan haar moeder. (She thinks about her mother.)
- kijken naar: Wij kijken naar een film. (We're watching a film.)
How it behaves
There's no formation recipe here, wachten op doesn't change shape depending on the sentence. The preposition and its object, op de bus, stay together as one unit no matter the tense. Take wachten op with the object de bus across the same five tenses:
| Tense | Sentence |
|---|---|
| Present | Jullie wachten op de bus. |
| Simple past | Jullie wachtten op de bus. |
| Present perfect | Jullie hebben op de bus gewacht. |
| Past perfect | Jullie hadden op de bus gewacht. |
| Future (gaan) | Jullie gaan op de bus wachten. |
Watch out
✗ Jullie wachten de bus op. looks like the separable-verb pattern, but it's wrong here: op was never part of wachten, so there's nothing to separate. Op de bus stays together as one piece.
Op de bus is one unit, a preposition plus its object, and it takes a normal spot in the sentence, the same spot any similar phrase would take, usually right before the verb at the end. It doesn't split because it was never glued to the verb in the first place.
There's one case where the preposition does appear to move: when its object is a thing rather than a person, and gets replaced by a small word like er. That's a completely different rule (Dutch just can't say op het for a thing), not the same kind of splitting separable verbs do. More on that below.
The er/daar/waar construction: person vs. thing
When the object of a fixed preposition is a person, you can replace it with a normal pronoun after the preposition, just like in English: Ik wacht op mijn vriend becomes Ik wacht op hem. But when the object is a thing, Dutch doesn't allow op de bus to reduce to a pronoun that way. Instead, the preposition attaches to a small word, er, daar, or waar, and the thing itself drops out of the sentence:
| Case | Sentence |
|---|---|
| Person | Ik wacht op mijn vriend. → Ik wacht op hem. |
| Thing | Ik wacht op de bus. → Ik wacht erop. |
| Question (thing) | Waar wacht je op? / Waarop wacht je? |
Common fixed-preposition verbs
There's no rule for predicting which preposition a verb takes, only memorization. Some of the example pairs:
| Verb | Sentence |
|---|---|
| wachten op | Ik wacht op de bus. |
| houden van | Ik houd van muziek. |
| denken aan | Zij denkt aan haar moeder. |
| kijken naar | Wij kijken naar een film. |
| zorgen voor | Hij zorgt voor de kinderen. |
| rekenen op | Je kunt op mij rekenen. |
Common mistakes
Wachten op and opwachten look almost identical but aren't related: opwachten is a separable verb meaning 'to lie in wait for', not the same verb split apart. Ik wacht op mijn vriend (I'm waiting for my friend) is a different sentence from Ik wacht mijn vriend op (I'm lying in wait for my friend).
Don't translate the preposition word for word from English. English 'wait for' doesn't give you wachten voor; the fixed pairing is wachten op. Learn each verb and its preposition as one unit.
Don't say op het for a thing already mentioned, Dutch doesn't allow that. Use erop instead: Ik wacht erop., not Ik wacht op het.
Don't move the preposition to the end the way you would with a separable verb: ✗ Jullie wachten de bus op. The preposition stays with its object: ✓ Jullie wachten op de bus.
Common questions about fixed-preposition verbs
How do I know which preposition a verb takes?+
Mostly by memorization, the same way you learn hebben or zijn for the perfect tenses. A good dictionary lists the fixed preposition right in the entry, for example wachten (op).
Can I ever drop the preposition?+
No, it's part of the verb's meaning. Wachten op de bus and just wachten mean different things; without op, the sentence no longer says what you're waiting for.
Is erop one word or two?+
One word, written together: erop, erin, eraan. Same for daarop/daarin and waarop/waarin.
Is this the same as verbs like opzoeken?+
No, and it's worth telling apart. In opzoeken, op is fused to the verb and splits off in a main clause. Here, op in wachten op is a real preposition that always stays with its object. See the scheidbare werkwoorden (separable verbs) page for that pattern.
The Verb Quiz already includes verbs like wachten, houden, denken and kijken. Practicing them there drills the conjugated forms, though it doesn't test which preposition each one takes.