Nicole was very tired.She had been typing all day. Adam looked pale.He had been digging all night.

Had she been studing hard all day? yes, she had.

Had they been playing the piano all night? yes, they had.

She didnot pass her exam.It was clear she had not been studing hard at all.

When i got home , Sarah had been cooking. [ نلاحظ في هذا المثال ان حدث الطهي لم يكتمل ]

When i had read that book, the phone rang. [ نلاحظ في هذا المثال ان حدث القراءة قد اكتمل ]