Ich muss einen Bericht bis Freitag fertigstellen.

Pronunciation: Ich moos eye-nen beh-RICHT bees FRYG-tahg fer-tig-SHTEL-en.

Meaning: I have to finish a report by Friday.

This phrase is essential in German workplaces for discussing deadlines—Germans are known for their punctuality and respect for timelines, so mastering deadline expressions is crucial for professional communication.