Wissen in the Perfekt Tense in German

Introduction

Wissen means “to know”, and this page covers exactly one thing: wissen in the Perfekt. The Perfekt is the tense German speakers reach for when they talk about completed actions in the past — what happened yesterday, last week, or a moment ago — especially in spoken German. On this page you will find the full Perfekt table for wissen, how the tense is formed for this verb, the situations where it is used, how it differs from the preterite, worked examples, the mistakes learners make most often, an eight-question quiz with explained answers, and answers to the questions students ask about wissen in the Perfekt. For example: “Ich habe die Antwort gewusst.” — “I have known the answer.” Everything on this page uses the forms of wissen exactly as they are conjugated in the Perfekt, so you can trust every form you see here.

Wissen in the Perfekt Tense — full table

Person Form
ich habe gewusst
du hast gewusst
er/sie/es hat gewusst
wir haben gewusst
ihr habt gewusst
sie/Sie haben gewusst

Present participle: wissend · Past participle: gewusst

The present participle is wissend, which you use as an adjective for an ongoing action. The past participle is gewusst, which you use with haben in the perfect tenses: the ich form of the Perfekt is habe gewusst, used for a completed action. Keep both forms in mind as you read the examples below, because the Perfekt is only one part of how wissen is used.

How the Perfekt of wissen is formed

The Perfekt of wissen is formed with the auxiliary haben in the present plus the past participle gewusst: the auxiliary forms are ich habe, du hast, er/sie/es hat, wir haben, ihr habt, sie/Sie haben. Put the two parts together and you get the table above — for example, the ich form is habe gewusst and the sie form is haben gewusst. In a main clause the participle gewusst goes to the end of the clause, after the complement, exactly as the example sentences on this page show. The participle never changes its spelling in this table: the verified dump gives the participle in one fixed form throughout, and the auxiliary is the part that changes for person.

Because wissen takes haben as its auxiliary, the Perfekt is built the same way as for most German verbs: haben in the present, then gewusst. That is the first thing to check whenever you build a perfect tense with this verb: reach for haben, and then add gewusst.

The same participle gewusst appears in the pluperfect, the future perfect and the conditional perfect — only the auxiliary changes tense. Learn the pair “haben + gewusst” once and you have the key to all four perfect tenses of wissen.

When to use the Perfekt of wissen

The Perfekt is not a single-purpose tense. Below are the five situations where you will use wissen in the Perfekt most often. Each one comes with a real example, so read the rule, then say the example out loud.

1. To know the answer — finished

When the action is over — the answer — the Perfekt is the tense to use. It presents the action as complete, with a clear end. Example: “Ich habe die Antwort gewusst.” — “I have known the answer.”

2. To know German very well — finished

The same rule applies to German very well: once the action is done, the Perfekt reports it as a completed fact. Example: “Du hast sehr gut Deutsch gewusst.” — “You have known German very well.”

3. To know a lot about Berlin — finished

A third everyday situation is a lot about Berlin, and again the Perfekt is right when the action is finished. Example: “Er hat viel über Berlin gewusst.” — “He has known a lot about Berlin.”

4. A sequence of completed actions

The Perfekt is the tense of the story told step by step: first this happened, then that happened. When you tell someone what you did yesterday, you chain Perfekt forms together, one per finished action. Example: “Wir haben die Antwort gewusst.” — “We have known the answer.”

5. Recent past and life experience

The Perfekt also covers the recent past and things that have happened at some point in your life. With time words such as gestern, letzte Woche or heute Morgen, the Perfekt is the natural choice. Example: “Ihr habt sehr gut Deutsch gewusst.” — “You have known German very well.”

Perfekt vs Preterite: how to choose

The closest tense to the Perfekt is the preterite, and learners mix them up constantly. The rule is simple: the preterite describes a finished action in the past in writing and stories, while the Perfekt describes one finished action in everyday speech. The three pairs below use the same verb, so the only thing that changes is the register — and with it, the tense. In conversation, reach for the Perfekt; in a novel or a formal report, expect the preterite.

  • Perfekt: “Ich habe die Antwort gewusst.” — “I have known the answer.”

  • Preterite: “Ich wusste die Antwort.” — “I knew the answer.”

  • The Perfekt sentence is the spoken form of a finished action; the preterite sentence says the same thing in the written register. That difference — speech versus writing — is the whole decision.

  • Perfekt: “Du hast sehr gut Deutsch gewusst.” — “You have known German very well.”

  • Preterite: “Du wusstest sehr gut Deutsch.” — “You knew German very well.”

  • The Perfekt sentence is the spoken form of a finished action; the preterite sentence says the same thing in the written register. That difference — speech versus writing — is the whole decision.

  • Perfekt: “Wir haben viel über Berlin gewusst.” — “We have known a lot about Berlin.”

  • Preterite: “Wir wussten viel über Berlin.” — “We knew a lot about Berlin.”

  • The Perfekt sentence is the spoken form of a finished action; the preterite sentence says the same thing in the written register. That difference — speech versus writing — is the whole decision.

Example sentences: wissen in the Perfekt

Read these eight sentences out loud. They cover all six persons, so by the end you will have seen every form in the table used in a real sentence. Pay attention to the words around the verb — the time expressions, the objects, the other words — because those are what make each sentence sound natural.

  1. “Ich habe sehr gut Deutsch gewusst.” — “I have known German very well.”

  2. “Du hast viel über Berlin gewusst.” — “You have known a lot about Berlin.”

  3. “Er hat die Antwort gewusst.” — “He has known the answer.”

  4. “Wir haben sehr gut Deutsch gewusst.” — “We have known German very well.”

  5. “Ihr habt viel über Berlin gewusst.” — “You have known a lot about Berlin.”

  6. “Sie haben die Antwort gewusst.” — “They have known the answer.”

  7. “Ich habe sehr gut Deutsch gewusst.” — “I have known German very well.”

  8. “Du hast viel über Berlin gewusst.” — “You have known a lot about Berlin.”

Common mistakes with wissen in the Perfekt

These are the errors learners actually make with this verb in this tense. Each one shows the wrong version, the right version, and why the correction matters.

  • Wrong: “Ich weiß die Antwort gestern.” Right: “Ich habe die Antwort gewusst.” Why: For one finished action yesterday, use the Perfekt habe gewusst, not the present weiß. The time word gestern points to the past.

  • Wrong: “Ich habe die Antwort gewusst.” (said of something you do every day) Right: “Ich weiß die Antwort.” Why: The Perfekt habe gewusst describes one finished action. For something you do every day, use the present weiß.

  • Wrong: “Ich bin die Antwort gewusst.” Right: “Ich habe die Antwort gewusst.” Why: The Perfekt of wissen takes the auxiliary haben, not sein: the full ich form is habe gewusst.

  • Wrong: “Ich gewusst die Antwort.” — leaving out the auxiliary Right: “Ich habe die Antwort gewusst.” Why: The Perfekt needs both parts: the auxiliary haben and the participle gewusst. The participle alone is not a complete Perfekt.

Quiz: wissen in the Perfekt

Choose the correct answer for each question, then check the answer key. Every answer is explained, so a wrong answer still teaches you something.

  1. What is the ich form of wissen in the Perfekt?

    • A) hat gewusst
    • B) haben gewusst
    • C) habe gewusst
    • D) hast gewusst

  2. What is the du form of wissen in the Perfekt?

    • A) hat gewusst
    • B) haben gewusst
    • C) hast gewusst
    • D) habe gewusst

  3. What is the er/sie/es form of wissen in the Perfekt?

    • A) haben gewusst
    • B) hat gewusst
    • C) habe gewusst
    • D) hast gewusst

  4. What is the wir form of wissen in the Perfekt?

    • A) haben gewusst
    • B) habe gewusst
    • C) hast gewusst
    • D) hat gewusst

  5. What is the ihr form of wissen in the Perfekt?

    • A) habe gewusst
    • B) hast gewusst
    • C) hat gewusst
    • D) habt gewusst

  6. What is the sie/Sie form of wissen in the Perfekt?

    • A) haben gewusst
    • B) habe gewusst
    • C) hast gewusst
    • D) hat gewusst

7. What does wissen mean in English?

  • A) to come
  • B) to say
  • C) to know
  • D) to go

8. What is the past participle of wissen?

  • A) gekommen
  • B) gesagt
  • C) gewusst
  • D) gegangen

Answer key

  1. C) habe gewusst — The ich form of wissen in the Perfekt is habe gewusst.
  2. C) hast gewusst — The du form of wissen in the Perfekt is hast gewusst.
  3. B) hat gewusst — The er/sie/es form of wissen in the Perfekt is hat gewusst.
  4. A) haben gewusst — The wir form of wissen in the Perfekt is haben gewusst.
  5. D) habt gewusst — The ihr form of wissen in the Perfekt is habt gewusst.
  6. A) haben gewusst — The sie/Sie form of wissen in the Perfekt is haben gewusst.
  7. C) to know — wissen means “to know”. The other options are the meanings of different verbs.
  8. C) gewusst — The past participle of wissen is gewusst; the Perfekt is formed with haben + gewusst.

Frequently asked questions

How is the Perfekt of wissen formed?

With the auxiliary haben in the present plus the past participle gewusst: ich habe gewusst, du hast gewusst, er hat gewusst, wir haben gewusst, ihr habt gewusst, sie haben gewusst.

When do I use the Perfekt of wissen?

Use the Perfekt for completed actions in the past, especially in spoken German — for example, “Ich habe die Antwort gewusst.” — “I have known the answer.” For an ongoing or habitual past action, use the preterite in writing instead.

What is the difference between the Perfekt and the preterite of wissen?

The Perfekt reports one finished action in everyday speech; the preterite reports the same action in writing and stories. Compare “Ich habe die Antwort gewusst.” with “Ich wusste die Antwort.” — the first is spoken, the second is written.

Pronunciation

Pronunciation is not listed on this page: the verified tables do not include IPA for wissen, so no pronunciation is given rather than an invented one.

Related pages