I had had...
He had done...
Rain had stopped...
She had missed...
She had written...
He had worked...
He had made..
I had finished...
Child had fallen...
Построение Past Perfect:
(+)S had Ved (3)
(-) S hadn't Ved (3)
(?) ? had Ved (3)?
Ну или это же словами:
Подлежащее, вспомогательный глагол had и глагол в третьей форме