Languages › German German Verb Conjugations - Lassen (To Let, Leave, and Allow) Share Flipboard Email Print Maxim Chuvashov / Getty Images German Grammar History & Culture Pronunciation & Conversation Vocabulary By Hyde Flippo German Expert Hyde Flippo taught the German language for 28 years at high school and college levels and published several books on the German language and culture. our editorial process Hyde Flippo Updated February 15, 2020 The verb lassen has many meanings. It can be used alone in its basic meaning of "let" or "leave," but it also functions as a modal verb that modifies or alters the meaning of another verb. In this function, lassen can mean to "have or get something done," as in er lässt sich die Haare schneiden ("he's having his hair cut/getting a haircut"). See other examples in the conjugation chart below.Principal Parts: lassen (lässt) • ließ • gelassenImperative (Commands): (du) Lass(e)! | (ihr) Lasst! | Lassen Sie!Also see The Many Meanings of lassenPresent Tense - PräsensDEUTSCHENGLISHich lasseI let/leaveI am letting/leavingdu lässtyou let/leaveyou are letting/leavinger lässt sie lässt es lässthe lets/leaveshe is letting/leavingshe lets/leavesshe is letting/leavingit lets/leavesit is letting/leavingwir lassenwe let/leavewe are letting/leavingihr lasstyou (guys) let/leaveyou (guys) are letting/leavingsie lassenthey let/leavethey are letting/leavingSie lassenyou let/leaveyou are letting/leavingExamples:Wir lassen einen Arzt kommen.We'll send for a doctor. ("have a doctor come")Lass das! Stop that! Leave that alone! Forget that!Lass mich in Ruhe! Leave me alone!PAST TENSES • VERGANGENHEITSimple Past Tense - ImperfektDEUTSCHENGLISHich ließI let/leftdu ließestyou let/lefter ließsie ließes ließhe let/leftshe let/leftit let/leftwir ließenwe let/leftihr ließtyou (guys) let/leftsie ließenthey let/leftSie ließenyou let/left Compound Past Tense (Pres. Perfect) - PerfektDEUTSCHENGLISHich habe gelassenI have let/leftI let/leftdu hast gelassenyou have let/leftyou let/lefter hat gelassen sie hat gelassen es hat gelassenhe has let/lefthe let/leftshe has let/leftshe let/leftit has let/leftit let/leftwir haben gelassenwe have let/leftwe let/leftihr habt gelassenyou (guys) have let/leftyou let/leftsie haben gelassenthey have let/leftthey let/leftSie haben gelassenyou have let/leftyou let/left Past Perfect Tense - PlusquamperfektDEUTSCHENGLISHich hatte gelassenI had let/leftdu hattest gelassenyou had let/lefter hatte gelassensie hatte gelassenes hatte gelassenhe had let/leftshe had let/leftit had let/leftwir hatten gelassenwe had let/leftihr hattet gelassenyou (guys) had let/leftsie hatten gelassenthey had let/leftSie hatten gelassenyou had let/left