Verbs: Perfect Tense

01

Formation

The Perfect is a compound tense, meaning it consists of two parts:

• A conjugated auxiliary verb (helper verb) in the present tense: either haben (to have) or sein (to be).
• The Past Participle (Partizip II) of the main verb.

The auxiliary verb sits in the second position of the sentence (conjugated to match the subject), while the past participle is placed at the very end of the sentence.

• Ich habe gestern Fußball gespielt.

  I played soccer yesterday.

• Wir sind schnell gelaufen.

  We ran fast.

02

Choosing the Auxiliary: Haben or Sein?

The vast majority of verbs form the Perfect tense with haben. This includes all verbs that take a direct object (transitive verbs), reflexive verbs, and most verbs describing a state or behavior.

• Er hat ein Buch gekauft.

  He bought a book.

• Sie hat lange geschlafen.

  She slept for a long time.

The auxiliary sein is used for a specific group of intransitive verbs (verbs without a direct object):

• Movement/Locomotion: Verbs indicating movement from A to B (e.g., gehen, fahren, fliegen, kommen).
• Change of State: Verbs indicating a transformation or change in condition (e.g., aufwachen - to wake up, sterben - to die, wachsen - to grow).
• Exceptions: A few specific verbs like sein (to be), bleiben (to stay), and passieren (to happen).

• Ich bin nach Berlin gefahren.

  I drove to Berlin.

• Das Kind ist gewachsen.

  The child has grown.

• Wir sind zu Hause geblieben.

  We stayed at home.

03

Participle Formation: Regular Verbs

Regular (weak) verbs form the past participle by adding the prefix ge- to the verb stem and ending with -t.

• kaufen (to buy) → ge + kauf + t → gekauft
• machen (to do) → ge + mach + t → gemacht

• Ich habe das Auto gekauft.

  I bought the car.

• Hast du die Hausaufgaben gemacht?

  Did you do the homework?

If the verb stem ends in -d or -t, an extra -e- is added before the final -t for pronunciation reasons (e.g., arbeiten → gearbeitet).

04

Participle Formation: Irregular Verbs

Irregular (strong) verbs also take the prefix ge-, but they end in -en instead of -t. Furthermore, the vowel in the stem often changes compared to the infinitive. These forms must be memorized.

• trinken (to drink) → getrunken
• schreiben (to write) → geschrieben
• sehen (to see) → gesehen

• Er hat zu viel Kaffee getrunken.

  He drank too much coffee.

• Wir haben einen Film gesehen.

  We saw a movie.

05

Verbs ending in -ieren

Verbs that end in -ieren (often borrowed from French or Latin) are regular but do not take the prefix ge-. They simply end in -t.

• studieren → studiert
• telefonieren → telefoniert

• Ich habe in München studiert.

  I studied in Munich.

06

Separable Prefix Verbs

For verbs with separable prefixes, the ge- is inserted between the prefix and the verb stem.

• aufräumen (to clean up) → auf + ge + räumt → aufgeräumt
• einladen (to invite) → ein + ge + laden → eingeladen

• Er hat sein Zimmer aufgeräumt.

  He cleaned up his room.

• Sie hat mich eingeladen.

  She invited me.

Conversely, verbs with inseparable prefixes (like be-, ent-, ver-, zer-) do not take a ge- at all.

• Ich habe das nicht verstanden.

  I didn't understand that.