1. She *had finished* her homework before she went out. (Hinweis: Past Perfect = had + Partizip Perfekt)
2. They *had left* the house when I arrived. (Hinweis: Das Ereignis in der Vergangenheit geschah vorher.)
3. He *had eaten* breakfast before the meeting started. (Hinweis: Handlung vor einer anderen Handlung in der Vergangenheit)
4. We *had seen* that movie already. (Hinweis: „had“ + Past Participle für abgeschlossene Handlung)
5. The train *had departed* by the time I got to the station. (Hinweis: Vorzeitigkeit ausdrücken)
6. I *had never been* to Paris before last year. (Hinweis: Negative Past Perfect Form)
7. She *had studied* Finnish before moving to Finland. (Hinweis: Vorzeitigkeit)
8. They *had visited* the museum before it closed. (Hinweis: Handlung war abgeschlossen)
9. We *had just arrived* when the phone rang. (Hinweis: Handlung kurz vor einer anderen abgeschlossen)
10. He *had already left* when I called him. (Hinweis: „already“ im Past Perfect)

1. By the time she called, I *had cleaned* the entire house. (Hinweis: Signalwort „by the time“ zeigt Vorzeitigkeit an)
2. Before the concert started, they *had found* their seats. (Hinweis: „before“ + Past Perfect)
3. After he *had finished* his work, he went home. (Hinweis: „after“ + Past Perfect)
4. We *had lived* in Berlin for five years before we moved. (Hinweis: Dauer bis zu einem Zeitpunkt in der Vergangenheit)
5. She *had lost* her keys before she left the office. (Hinweis: Handlung vor einer anderen Handlung)
6. They *had not eaten* anything before the party. (Hinweis: Verneinung im Past Perfect)
7. I *had already read* the book when the teacher assigned it. (Hinweis: „already“ für abgeschlossene Handlung)
8. By then, he *had become* very good at playing the guitar. (Hinweis: Zustand vor einem bestimmten Zeitpunkt)
9. We *had cleaned* the kitchen when the guests arrived. (Hinweis: Handlung vor einem Ereignis)
10. She *had forgotten* her umbrella, so she got wet in the rain. (Hinweis: Ursache vor Wirkung in der Vergangenheit)