The preterite (Icelandic þátíð, "past time") is the workhorse tense for talking about the past. It is the form you reach for to narrate events, tell stories, and report what happened — the backbone of everything from a saga to "what did you do this weekend?" This page is about what the preterite does, not how it is built: the weak (-aði, -di) and strong (tók, kom) formation rules each have their own pages. The crucial lesson for an English speaker is that the Icelandic preterite covers more ground than the English simple past — it routinely does the job that English hands to the present perfect.
The default narrative past
In a story or a report, every completed event lands in the preterite. Strung together, these verbs carry the narration forward. Take a simple morning:
Hann vaknaði klukkan sjö, fór á fætur og borðaði morgunmat.
He woke up at seven, got up, and ate breakfast.
Three preterites in a row — vaknaði (weak), fór (strong), borðaði (weak) — and the sentence flows exactly as the English simple past would. This chaining is what makes the preterite the engine of narration. The Icelandic sagas are written almost entirely in it: event after event in the past, each pushing the story one step on.
Við lögðum af stað snemma, keyrðum norður og komum til Akureyrar um kvöldið.
We set off early, drove north, and arrived in Akureyri in the evening.
Hún opnaði bréfið, las það tvisvar og brosti.
She opened the letter, read it twice, and smiled.
Where English uses the perfect, Icelandic often uses the preterite
English draws a sharp line: "I went" (simple past, a specific occasion) versus "I have gone" (present perfect, relevance to now, or unspecified time). Icelandic draws that line far more softly. The preterite frequently covers what English would render with the present perfect — especially for experience, completion, and "ever / never" questions.
Þekktir þú hann?
Did you know him? / Have you known him?
Last þú þessa bók?
Did you read / Have you read this book?
Ég sá þessa mynd áður.
I've seen this film before. (preterite sá, where English prefers the perfect)
In each case English speakers feel a pull toward "have you...?" and "I have seen," but the natural Icelandic is the plain preterite. Icelandic does have a perfect, and it is the right choice in some of these (see below) — but the preterite is never wrong here the way "I saw it before" can feel slightly off in careful English. The ranges simply overlap more.
Icelandic does have a perfect — used more selectively
Lest this seem like Icelandic has no perfect, it does: hafa + supine (ég hef farið, "I have gone"), with its own page. The difference is that Icelandic deploys it more selectively than English. It tends to mark a past event whose result still holds now, or to sum up experience up to the present moment, rather than serving as a general past-with-current-relevance the way English does.
Ég hef aldrei komið til Íslands.
I have never been to Iceland. (perfect: experience up to now)
Hún hefur lært íslensku í tvö ár.
She has studied Icelandic for two years. (perfect: ongoing result/relevance)
Contrast those with the same events pinned to a finished moment, where the preterite takes over:
Ég kom til Íslands í fyrra.
I came to Iceland last year. (preterite: a specific past occasion)
The mental model: if the sentence answers "what is your experience / situation now?", the perfect fits; if it answers "what happened (then)?", the preterite fits. Where English would happily use the perfect for both, Icelandic leans toward the preterite for the second.
The hard rule: a definite past-time adverb blocks the perfect
This is the point English speakers violate most, and it is a genuine, non-negotiable rule — Icelandic works like German here. A definite past-time adverb (í gær "yesterday", í fyrra "last year", klukkan tvö "at two", árið 2010) forces the preterite and forbids the perfect. English allows "I have eaten already" but not "I have eaten yesterday"; Icelandic extends the ban to every such adverb.
Ég fór í bíó í gær.
I went to the cinema yesterday. (í gær forces the preterite)
Við borðuðum á þessum stað í fyrra.
We ate at this place last year. (í fyrra → preterite)
You cannot say ég hef farið í gær — "I have gone yesterday" — any more than you can in careful English. The adverb anchors the event in a closed past, and a closed, dated past is the preterite's exclusive territory. This trips up English speakers because they translate "I have done X" word-for-word and only afterwards bolt on "yesterday," producing a sentence that is ungrammatical in both languages but which they let slide in Icelandic.
A note on form: what the preterite looks like
Although formation lives on other pages, it helps to recognise the endings so you can read the examples above. Weak preterites carry -i / -ir / -i / -um / -uð / -u on a dental stem (talaði, talaðir, talaði, töluðum...). Strong preterites typically show a bare singular — -∅ / -st / -∅ — on an ablauted stem: ég fór, þú fórst, hann fór; ég tók, þú tókst, hann tók. And the plural rounds an a-stem to ö where a u ending appears (við fórum keeps ó; but við sáum, við tókum — watch each verb). The takeaway for use: regardless of weak or strong, all these forms are one tense, the preterite, and they all do the narrative-past job described here.
Ég tók strætó heim því bíllinn var bilaður.
I took the bus home because the car was broken down. (strong tók + preterite var)
Common Mistakes
❌ Ég hef farið í bíó í gær.
Incorrect — a definite past-time adverb (í gær) bans the perfect; use the preterite.
✅ Ég fór í bíó í gær.
I went to the cinema yesterday.
This is the signature English-transfer error. "I have gone yesterday" is impossible: í gær forces ég fór. Whenever a dated past adverb is present, drop the perfect.
❌ Ég hef borðað fyrir tveimur tímum.
Incorrect — 'two hours ago' is a definite past point → preterite: ég borðaði.
✅ Ég borðaði fyrir tveimur tímum.
I ate two hours ago.
Fyrir tveimur tímum ("two hours ago") locates the event at a closed past point, exactly like í gær. It forces the preterite.
❌ Hefur þú lesið þessa bók í síðustu viku?
Awkward — 'last week' is closed past; ask in the preterite: Last þú... í síðustu viku?
✅ Last þú þessa bók í síðustu viku?
Did you read this book last week?
The perfect can ask "have you ever read this book?" (Hefur þú lesið...?) with no time adverb — but once you add a closed-past adverb like í síðustu viku, the perfect is barred and you switch to the preterite.
❌ Ég hef séð hann í morgun á leiðinni í vinnuna.
Incorrect — í morgun ('this morning', now past) → preterite: ég sá hann.
✅ Ég sá hann í morgun á leiðinni í vinnuna.
I saw him this morning on the way to work.
Í morgun refers to a finished earlier-today; it is a definite past adverb and selects the preterite sá, not the perfect.
Key Takeaways
- The preterite is the default narrative past — chain it to tell any sequence of finished events (vaknaði, fór, borðaði).
- It covers both the English simple past and much of the English present perfect; don't reflexively translate "I have done" with hafa + supine.
- Icelandic has a perfect (hafa + supine) but uses it more selectively, mainly for experience and results that still hold now (ég hef aldrei komið til Íslands).
- A definite past-time adverb (í gær, í fyrra, í morgun, fyrir tveimur tímum) forces the preterite and forbids the perfect — the same rule as German, the one English speakers break most.
- Both weak (talaði) and strong (fór, tók) forms are the same tense and share this single set of uses.
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- The Weak Preterite: -aði, -di, -ði, -tiA2 — How to choose and form the weak past tense — Class-1 -a verbs take -aði (tala → talaði, plural töluðum), Class-2 verbs take the short dental -di/-ði/-ti picked by the preceding sound (reyndi, dæmdi, keypti) — with the full tala paradigm and the 'when in doubt, -aði' default for unknown verbs.
- Strong Verbs and Ablaut: OverviewA2 — The strong verb system: verbs that build the past by changing their stem vowel (ablaut) instead of adding an ending, with FOUR principal parts — infinitive, preterite singular, preterite plural, supine — and the crucial split where the past singular and past plural can carry different vowels (fann vs fundu).