Conjugation of German Verb lassen

to let / to leave / to have (done)

Strong (irregular) Past Participle: gelassen Auxiliary: haben

Perfekt: hat + gelassen (e.g., Ich habe gelassen)

Present Tense (Präsens)

Actions happening now, habitual actions, and general truths

Completed past actions, commonly used in written German

Hypothetical situations, polite requests, and wishes

Actions that will happen, formed with werden + infinitive

Direct commands and requests

Präsens

Lass mich in Ruhe!

Leave me alone!

Präteritum

Er ließ seine Tasche im Büro.

He left his bag in the office.

Causative

Ich lasse mir die Haare schneiden.

I'm having my hair cut.

Perfekt

Sie hat das Auto reparieren lassen.

She had the car repaired.