Past Perfect Continuous map
They had been practicing pronunciation before the lesson began.
They had been practicing pronunciation before the lesson began.
Build the negative form.
Build the question form.
Утверждение
had been + verb-ing
Отрицание
had not been + verb-ing
Вопрос
Had + subject + been + verb-ing?
Процесс длился до определенного момента в прошлом.
A process lasted until a specific moment in the past.
They had been practicing pronunciation before the lesson began.
Они практиковали произношение до начала урока.