Genau
Topic test · B1

lassen test

10questions
8minutes
60%pass mark
Start the test Read the topic first

One question at a time, the clock runs. Answers stay closed like a real exam: you see every correct answer with its explanation at the end. Score 60% to finish the topic.

Topic test

10 questions, easy to hard

Pick an option and press «Next». You can go back and change it. Anything left blank counts as wrong.

Ich morgen mein Auto reparieren.

I’m having my car repaired tomorrow.

You use lassen to have someone else do a job.

Er hat den Text übersetzen .

He had the text translated.

There is a main verb in the infinitive (übersetzen), so the Perfekt uses lassen, not gelassen.

Ich habe meinen Schirm im Zug .

I left my umbrella on the train.

Here lassen is the only verb (meaning “leave”), so it becomes gelassen.

Das sich nicht leicht erklären.

That can’t be explained easily.

lässt — lassen is irregular: in the 3rd person singular the stem vowel changes (a → ä). sich lassen + infinitive gives the meaning “can be …-ed”: “that can’t be explained easily”.

Wir uns Pizza liefern.

We’re having pizza delivered.

lassen — with wir the verb looks just like the infinitive. Here lassen means “have done”: we don’t bring the pizza, we have it brought.

Hast du dir die Haare schneiden ?

Did you get your hair cut?

lassen — when a second infinitive is present (schneiden), lassen does not become gelassen in the Perfekt; it stays an infinitive. This is called the double infinitive (Ersatzinfinitiv).

mich in Ruhe! (du)

Leave me alone!

Lass — in the du imperative the personal ending drops and the stem vowel does not change. Lasst is for ihr (you all), and Lassen Sie is the formal form.

Das Fenster lässt nicht öffnen.

The window can’t be opened.

The “cannot be done” meaning is built with “sich lassen”.

Build the sentence: I had my bike repaired.

Tap the pieces to build the sentence

Ich habe mein Fahrrad reparieren lassen. When someone else does the job, lassen goes to the very end of the sentence as an infinitive in the Perfekt.

Ich habe das Buch auf dem Tisch gelassen. — this sentence is grammatically correct.

Correct. There is no other action here; there is only one verb, meaning “leave”. So using “gelassen” is perfectly fine.
Quick rules

The rules in three lines

The full topic lives on its own page. This is only the core you need for the test.

  1. Two verbs? Use “lassen” in the Perfekt

    When lassen is used with another verb, like a modal verb, the Perfekt uses the infinitive “lassen”, not “gelassen”.

    Er hat sich die Haare schneiden lassen.

Traps

Commonly mixed up

Where a direct translation breaks. The hard questions come from here.

  • Das lässt machen.

    Das lässt sich machen.

    In the “can be done” pattern, sich is always required.