1. Äëÿ âûðàæåíèÿ äëèòåëüíîãî ïðîøåäøåãî äåéñòâèÿ, êîòîðîå íà÷àëîñü ðàíåå äðóãîãî ïðîøåäøåãî äåéñòâèÿ, âûðàæåííîãî the Past Simple, è âñå åùå ïðîäîëæàëîñü â ìîìåíò åãî ñîâåðøåíèÿ â ïðîøëîì. Îáÿçàòåëüíî äîëæåí áûòü óêàçàí ïåðèîä âðåìåíè, â êîòîðûé ñîâåðøàëîñü äëèòåëüíîå äåéñòâèå, äëÿ ýòîãî èñïîëüçóþòñÿ ñëåäóþùèå îáñòîÿòåëüñòâà âðåìåíè:
for some timeThe class had been discussing the party for some time when the teacher came in.
for two hoursWhen I came he had been sleeping for two hours.
since two o’clockI thought he had been sleeping since two o’clock.
Her father had been teaching German for 10 years when we met.
We had been smoking in silence for several minutes before he spoke again.
She had been studying French for 5 years before she entered the faculty of foreign languages.
 ýòîì çíà÷åíèè ïðåäëîã for óêàçûâàåò íà ïåðèîä âðåìåíè, â êîòîðûé ýòî äåéñòâèå äëèëîñü, à since – íà òî, ñ êàêîãî ìîìåíòà îíî íà÷àëî ðàçâèâàòüñÿ.
2.Äëÿ âûðàæåíèÿ äëèòåëüíîãî ïðîøåäøåãî äåéñòâèÿ, êîòîðîå çàêîí÷èëîñü íåïîñðåäñòâåííî ïåðåä ìîìåíòîì íàñòóïëåíèÿ äðóãîãî ïðîøåäøåãî äåéñòâèÿ.
He felt tired when he came home as he had been playing football.
He was out of breath. He had been running fast.