3 Complete the gaps with the verb in brackets, either in the Past Perfect or in the Past Perfect Continuous.

Краткий ответ

1. I had been waiting at the cinema for an hour before Kim finally showed up.
2. They had been playing football all day, so they were very tired in the evening.
3. Had he finished making the lunch when the guests arrived?
4. The band had been performing for an hour when the electricity went off.
5. Belinda had been studying German for three years before she moved to Munich.

Как выбрать время

• Past Perfect: \(had + V_3\) — действие завершилось до другого прошлого события. Важен результат.
• Past Perfect Continuous: \(had + been + V_{ing}\) — действие длилось до другого прошлого момента. Важна продолжительность или процесс.

В №1, 2, 4 и 5 есть указатели длительности: for an hour, all day, for an hour, for three years. Поэтому там Past Perfect Continuous.

В №3 глагол finish означает завершённый результат к моменту, когда пришли гости, поэтому Past Perfect. Вопрос строится так: Had he finished...?

Проверка: после had стоит третья форма глагола, после had been — глагол с -ing.