Shortcut 1: The "English Cousin" Rule (Cognates)
Because English and German are historic cousins, strong verbs in English are almost always strong verbs in German.
Ask yourself what the verb does in English past tense:
- stehen = to stand → English: stood (vowel change) → German stehen is strong (stand, gestanden).
- singen = to sing → English: sang, sung (irregular) → German singen is strong (sang, gesungen).
- trinken = to drink → English: drank, drunk (irregular) → German trinken is strong (trank, getrunken).
- hören = to hear → English: heard (regular -d ending) → German hören is weak (hörte, gehört).
Shortcut 2: The Double-Vowel (Diphthong) Rule
Look at the vowel combinations in the basic infinitive form. German verbs with certain vowel combinations are almost always strong:
- -ei- verbs are 99% strong! They flip to -ie-: bleiben → blieb, schreiben → schrieb, leihen → lieh.
- -ie- verbs are 99% strong! They flip to -o-: fliegen → flog, bieten → bot, schließen → schloss.
Formula: -ei- → -ie- | -ie- → -o-
Shortcut 3: The "Caveman" Rule (Ancient Core Life Verbs)
Strong verbs are thousands of years old. If a caveman did it to survive, it is almost certainly a
strong verb:
- Eat (essen → aß), Drink (trinken → trank), Sleep (schlafen → schlief), Run (laufen → lief), Die (sterben → starb), Give (geben → gab).
- Modern/social activities are weak: surfen, chatten, fotografieren, kündigen, reservieren (weak -te endings).
Shortcut 4: Weak vs. Strong Verb Formulas
1. Regular Weak Verbs (90% of German): Stem + -te (Präteritum) | ge- + Stem + -(e)t (Perfekt)
2. Strong Verbs (Ablautreihen): Vowel Change in Stem (no -t-) | ge- + Vowel-Changed Stem + -en
machen → machte → hat gemacht | singen → sang → hat gesungen
Shortcut 5: Inseparable Prefix NO-ge Rule (be-, ge-, emp-, ent-, er-, ver-, zer-)
Verbs with inseparable prefixes NEVER take ge- in Perfekt!
besuchen → hat besucht (NOT hat gebesucht) | verstehen → hat verstanden
Shortcut 6: Trennbare Verben "ge-" Sandwich Rule
Separable prefixes split in present & simple past, and sandwich -ge- in the middle for Perfekt:
einkaufen → kaufte ein → hat ein-ge-kauft | anrufen → rief an → hat an-ge-rufen
Shortcut 7: Spoken German (Perfekt) vs. Written (Präteritum)
In spoken German (A1-B1), always use Perfekt (haben/sein + Partizip II). Use Präteritum primarily for sein (war), haben (hatte), werden (wurde), and modal verbs (musste, konnte, wollte, durfte, sollte).