---
title: "If only: Als ik het had geweten"
level: B2
chapter: "Style and register"
canonical: https://www.dutchfluency.com/grammar/unreal-past
updated: 2026-10-09
author: Dutch Fluency
license: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)
---

# If only: Als ik het had geweten

To talk about something that did not happen in the past, put the _als_-clause in the past perfect, the tense with _had_ or _was_: _als ik het had geweten_ (if I had known). In the main clause, the part that could stand on its own, use _zou_ plus a participle (the form like _gekomen_) plus _hebben_ or _zijn_, or simply use the past perfect again: _zou ik gekomen zijn_ or _was ik gekomen_. Both mean "I would have come", and both are correct and common.

This is the grammar of regret, relief and excuses: the train you missed, the birthday you forgot, the job you nearly got.

## The pattern

> For an unreal past, use _als_ + _had_ or _was_ + participle. In the main clause, use _zou_ + participle + _hebben_ or _zijn_, or just _had_ or _was_ + participle.

- The [past perfect](https://www.dutchfluency.com/grammar/past-perfect) normally means "earlier than another past moment". In this pattern it marks something that did not happen.
- In the _als_-clause the verbs go to the end: _als je me had gebeld_ or _als je me gebeld had_.
- In the main clause, choose _zou ik gekomen zijn_ (or _zou ik zijn gekomen_) or simply _was ik gekomen_.
- _Hebben_ or _zijn_ is the [same choice as in the perfect tense](https://www.dutchfluency.com/grammar/hebben-or-zijn): _komen_, _gaan_, _vertrekken_ and _worden_ take _zijn_.
- When the _als_-clause comes first, the main clause starts with its verb, or with _dan_ plus the verb. The _als_-clause can also come second: _Ik had gebeld als ik het had geweten._

## Examples

| Als ik het **had geweten**, **was** ik eerder **gekomen**. | If I had known, I would have come earlier. |
| Als ik het **had geweten**, **zou** ik eerder **gekomen zijn**. | If I had known, I would have come earlier. |
| Als de trein niet **was uitgevallen**, **waren** we op tijd voor de vergadering **geweest**. | If the train hadn't been cancelled, we would have been on time for the meeting. |
| Daan **had** de baan **gekregen** als hij zijn cv eerder **had opgestuurd**. | Daan would have got the job if he had sent his CV earlier. |
| Als Fatima meer tijd **had gehad**, **zou** ze de cursus **hebben afgemaakt**. | If Fatima had had more time, she would have finished the course. |
| Als het niet zo hard **had gewaaid**, **was** Bas op de fiets **gegaan**. | If it hadn't been so windy, Bas would have gone by bike. |
| Als je me **had gebeld**, **had** ik je van het station **opgehaald**. | If you had called me, I would have picked you up from the station. |
| Ik **zou** het niet **hebben gezegd** als ik **had geweten** dat ze erbij was. | I wouldn't have said it if I had known she was there. |
| Als Priya de brief van de gemeente **had gelezen**, **had** ze de afspraak niet **gemist**. | If Priya had read the letter from the municipality, she wouldn't have missed the appointment. |

## Why it works this way

Dutch, like English, takes a step back in time to show that something is not real. For the present, that step lands on the simple past: _Als ik tijd had, zou ik komen_ (but I don't have time). For the past, the only step left is the past perfect. So _had_ and _was_ do two jobs: a real earlier past (_de trein was al vertrokken toen ik aankwam_) and an unreal past (_als de trein nog niet was vertrokken, had ik hem gehaald_). Even after _als_, the past perfect can describe a real past that the speaker is unsure about, so the context decides. A main clause like _was ik gekomen_ or _zou ik gekomen zijn_ makes the unreal meaning clear.

That is also why the main clause can simply repeat the past perfect: _had ik gebeld_ is already one step away from reality, so _zou_ adds nothing new. The two options mean the same. The short version is very common in conversation, and the _zou_ version is just as standard, in speech and in writing.

If you speak German, this will feel familiar ("wenn ich es gewusst hätte, wäre ich gekommen"), except that Dutch uses its ordinary past forms, with no special subjunctive. If you speak English, resist copying "if I would have known": _als ik het zou hebben geweten_ is not wrong, but it is heavy, and most speakers keep _zou_ out of the _als_-clause. Dutch can also drop _als_ altogether: _Had ik het geweten, dan was ik gekomen_. More on that in [conditions without als](https://www.dutchfluency.com/grammar/conditionals-without-als).

Remember: one step back in time is one step away from reality. For the past, that step lands on _had_ or _was_, and you may use it on both sides of the comma.

## Watch out

- Not: _Als ik het had geweten, ik was eerder gekomen._ Say: _Als ik het had geweten, was ik eerder gekomen._ (the _als_-clause fills the first place, so the verb follows straight after the comma)
- Not: _Als je had me gebeld, had ik je opgehaald._ Say: _Als je me had gebeld, had ik je opgehaald._ (in the _als_-clause the verbs go to the end)
- Not: _Als we eerder hadden vertrokken, hadden we de trein gehaald._ Say: _Als we eerder waren vertrokken, hadden we de trein gehaald._ (_vertrekken_ takes _zijn_, here too)
- Not: _Als ik de uitnodiging had gekregen, zou ik gekomen hebben._ Say: _Als ik de uitnodiging had gekregen, zou ik gekomen zijn._ (_komen_ takes _zijn_, so use _zou_ plus _zijn_)
- Not: _Als Joris zijn fietsverlichting had aangezet, zou hij geen boete gekregen._ Say: _Als Joris zijn fietsverlichting had aangezet, zou hij geen boete hebben gekregen._ (_zou_ does not replace _had_: it still needs _hebben_ or _zijn_, or drop _zou_ and say _had hij geen boete gekregen_)

## Quick check

1. Choose _had_ or _was_: _Als Mei niet ziek ... geworden, was ze naar de verjaardag van haar buurman gegaan._
2. Fill in one word: _Als Sanne het adres had gehad, ... ze Lotte een kaartje hebben gestuurd._
3. Rewrite the main clause with the past perfect instead of _zou_: _Als het niet had geregend, zouden we buiten hebben gegeten._
4. Fix the word order: _Als Ahmed eerder was vertrokken, hij had de bus gehaald._

## Answers

1. _was_ (_worden_ takes _zijn_, so _was geworden_)
2. _zou_ (_zou_ + _hebben_ + participle, and _ze_ is Sanne, so singular)
3. _Als het niet had geregend, hadden we buiten gegeten._ (same meaning, no _zou_ needed)
4. _Als Ahmed eerder was vertrokken, had hij de bus gehaald._ (after the _als_-clause the verb comes first)

## Use it today

Think of one small thing that went wrong this week, like a missed train or a forgotten birthday. Say or write it twice: once with _zou_ (_Als ik mijn wekker had gezet, zou ik de trein hebben gehaald_) and once with the past perfect (_Als ik mijn wekker had gezet, had ik de trein gehaald_).

## Questions learners ask

**How do you say "if I had known" in Dutch?**

Say "als ik het had geweten" or "als ik dat had geweten"; het or dat makes clear what you would have known. If a main clause follows, it starts with the verb, as in "Als ik het had geweten, was ik gekomen."

**Is "zou ik gekomen zijn" or "was ik gekomen" correct?**

Both are correct standard Dutch and both mean "I would have come". The past perfect version is shorter and very common in conversation, and the zou version is just as standard in speech and writing.

**Do you use zou in the als-clause in Dutch?**

Usually not: Dutch normally puts the als-clause in the past perfect, as in "als ik het had geweten". A form like "als ik het zou hebben geweten" is possible but sounds heavy, so most speakers leave zou out.

From the Dutch Fluency Grammar: https://www.dutchfluency.com/grammar. Shared under CC BY-SA 4.0.