Past - Perfect (Junior Cert German): Revision Notes
Past - Perfect
Overview
The Perfect tense (das Perfekt) is the main way to talk about past events in German. Unlike English, where we might say "I worked" or "I have worked," German speakers almost always use the Perfect tense for past actions in everyday conversation.
The Perfect tense describes completed actions in the past, similar to both the simple past and present perfect in English.
Understanding the German Perfect vs English Past Tenses
German simplifies past tense usage compared to English. Where English has multiple options, German typically uses just the Perfect tense for conversational past events.
Basic Perfect Tense Examples:
- Ich habe gearbeitet = I worked / I have worked
- Er ist gekommen = He came / He has come
Rules and formation
The Perfect tense follows a simple two-part structure that remains consistent across all verbs:
Perfect Tense Formula: Auxiliary verb (present tense) + Past participle (Partizip II)
There are two auxiliary verbs in German:
- haben (to have) - used with most verbs
- sein (to be) - used with specific types of verbs
Auxiliary verbs: haben vs sein
Understanding when to use each auxiliary verb is crucial for mastering the Perfect tense.
When to use sein
You use sein as the auxiliary verb when the main verb shows:
- Movement or change of position: gehen (to go), kommen (to come), reisen (to travel)
- Change of condition: sterben (to die), einschlafen (to fall asleep), werden (to become)
- Intransitive verbs (verbs without a direct object)
When to use haben
Use haben for all other verbs, including:
- Most transitive verbs (verbs with direct objects)
- Most weak verbs
- Actions that don't involve movement or change of state
Key Rule for Weak Verbs: Almost all weak (regular) verbs use haben, with rare exceptions like reisen (to travel) and passieren (to happen).
Forming the past participle (Partizip II)
The past participle formation depends on the verb type. Learning these patterns is essential for mastering the Perfect tense.
Weak verbs (regular verbs)
These follow a predictable pattern that makes them easier to learn:
Weak Verb Pattern: ge- + stem + -t
Weak Verb Past Participles:
- machen → gemacht (made)
- fragen → gefragt (asked)
- arbeiten → gearbeitet (worked)
Exceptions for weak verbs:
- Verbs ending in -ieren: only add -t (no ge-)
- studieren → studiert (studied)
- diskutieren → diskutiert (discussed)
- Inseparable verbs: only add -t (no ge-)
- besuchen → besucht (visited)
- verstehen → verstanden (understood)
Strong verbs (irregular verbs)
These often change their stem vowel and require memorisation:
Strong Verb Pattern: ge- + (changed) stem + -en
Strong Verb Past Participles:
- schreiben → geschrieben (written)
- singen → gesungen (sung)
- gehen → gegangen (gone)
- essen → gegessen (eaten)
Mixed verbs
These combine features of weak and strong verbs - they add ge- and -t like weak verbs but change the stem like strong verbs:
Mixed Verb Examples:
- denken → gedacht (thought)
- bringen → gebracht (brought)
- kennen → gekannt (known)
Separable and inseparable verbs
The placement of ge- depends on whether the verb is separable or inseparable:
Separable verbs: The ge- goes between the prefix and the stem
- einkaufen → eingekauft (shopped)
- aufstehen → aufgestanden (got up)
Inseparable verbs: No ge- is added
- verstehen → verstanden (understood)
- bekommen → bekommen (received)
Table of key forms
Common weak verbs
| Infinitive | Past Participle | English |
|---|---|---|
| machen | gemacht | made |
| fragen | gefragt | asked |
| kaufen | gekauft | bought |
| lernen | gelernt | learned |
Common strong verbs
| Infinitive | Past Participle | English |
|---|---|---|
| gehen | gegangen | gone |
| kommen | gekommen | come |
| sehen | gesehen | seen |
| trinken | getrunken | drunk |
Auxiliary verb conjugations
haben (to have)
- ich habe (I have)
- du hast (you have)
- er/sie/es hat (he/she/it has)
- wir haben (we have)
- ihr habt (you all have)
- sie haben (they have)
sein (to be)
- ich bin (I am)
- du bist (you are)
- er/sie/es ist (he/she/it is)
- wir sind (we are)
- ihr seid (you all are)
- sie sind (they are)
Example sentences
Here are examples showing how the Perfect tense works in context:
Perfect Tense with haben:
-
Ich habe heute viel gearbeitet. (I worked a lot today.)
- The auxiliary haben comes after the subject, and the past participle gearbeitet goes at the end.
-
Hast du sie gesehen? (Did you see her?)
- In questions, the auxiliary hast moves to the front, but the past participle gesehen still goes at the end.
Perfect Tense with sein:
-
Ich bin gestern gekommen. (I came yesterday.)
- Movement verb kommen uses sein as auxiliary.
-
Bist du schon eingeschlafen? (Have you already fallen asleep?)
- Change of condition verb einschlafen uses sein.
Word order rules
Understanding German word order is crucial for correct Perfect tense usage.
In statements:
Subject + auxiliary verb + ... + past participle
Statement Word Order:
- Ich habe sie gesehen. (I saw her.)
- Er ist nach Hause gegangen. (He went home.)
In questions:
Auxiliary verb + subject + ... + past participle
Question Word Order:
- Hast du das Buch gelesen? (Did you read the book?)
- Ist sie gekommen? (Did she come?)
Common mistakes and tips
Learning from common mistakes helps you avoid these pitfalls and master the Perfect tense more effectively.
Mistake 1: Using the wrong auxiliary
- Wrong: Ich habe nach Berlin gefahren.
- Correct: Ich bin nach Berlin gefahren. (I drove to Berlin.)
- Tip: Remember that movement verbs like fahren use sein.
Mistake 2: Forgetting the past participle at the end
- Wrong: Ich habe gemacht meine Hausaufgaben.
- Correct: Ich habe meine Hausaufgaben gemacht. (I did my homework.)
- Tip: The past participle always goes to the end of the sentence or clause.
Mistake 3: Adding ge- to inseparable verbs
- Wrong: Ich habe ihn gebesucht.
- Correct: Ich habe ihn besucht. (I visited him.)
- Tip: Verbs starting with be-, er-, ver-, ent-, etc. don't take ge-.
Mistake 4: Wrong past participle ending for strong verbs
- Wrong: Ich bin gegeht.
- Correct: Ich bin gegangen. (I went.)
- Tip: Strong verbs end in -en, weak verbs end in -t.
Key Points to Remember:
- The Perfect tense uses auxiliary verb + past participle to talk about completed past actions
- Most verbs use haben, but movement and change of state verbs use sein
- Weak verbs form past participles with ge- + stem + -t
- Strong verbs form past participles with ge- + (changed) stem + -en
- The past participle always goes at the end of the sentence in German word order