Participles as adjectives

German has two participle forms that can be placed directly before a noun, just like ordinary adjectives. The Partizip I (present participle) describes an action that is ongoing or active at the same time as the main verb — for example, lachend (laughing). The Partizip II (past participle) describes an action that is completed or passive — for example, gekocht (boiled/cooked). When either participle is used attributively — that is, placed before a noun inside a noun phrase — it must carry the same adjective endings as any other attributive adjective.

• Partizip I — simultaneous or ongoing action. Use it when the noun is actively doing something at the same time as the main clause event. The noun is the agent of the participle's action: die lachenden Kinder — the children are the ones laughing.

• Partizip II — completed or passive state. Use it when something has been done to the noun, or when the action is finished: das gekochte Ei — the egg has been cooked.

• Attributive position only. This topic covers participles placed before the noun. When a participle follows a copula (e.g. Das Ei ist gekocht.), it is predicative and takes no ending — that is a separate use.

Partizip I is formed by adding -d to the infinitive. The infinitive itself already ends in -en, so the result is infinitive + -d: lachen → lachend, faszinieren → faszinierend. Do not alter the infinitive stem before adding -d.

Partizip II is the same form used in the perfect tense. For regular (weak) verbs: ge- + stem + -t (kochen → gekocht). Strong verbs use their own irregular Partizip II (schreiben → geschrieben). Verbs with inseparable prefixes or ending in -ieren take no ge- (faszinieren → fasziniert).

Adding adjective endings. Once you have the base participle form, attach the standard adjective ending for the gender, case, and determiner type of the noun phrase — exactly as you would for any adjective. For example, with a definite article in the nominative: der lachend-e Mann, die lachend-en Kinder, das gekocht-e Ei.

• Skipping the adjective ending. A participle used before a noun must decline like any adjective. Writing *die lachende Kinder is wrong because Kinder is plural and requires the ending -en after a definite article: die lachenden Kinder. Treat the participle exactly like an adjective and apply the correct ending every time.

• Using Partizip I for a completed or passive meaning. Partizip I signals an ongoing, active process. *das kochende Ei means an egg that is currently boiling in the pot — not a boiled egg. For a completed result, use Partizip II: das gekochte Ei. Ask yourself: is the action still happening, or is it done?

• Forming Partizip I incorrectly. The rule is simple: take the infinitive and add -d. Do not conjugate the verb first. *lachtend incorrectly inserts the third-person stem lacht- before -end. The correct form is lachend (infinitive lachen + -d).