Passive past perfect sentences

had + been + past participle (3rd form)

Examples: Passive past perfect

The window had been cleaned.
The door had been closed.
Electric cars had been invented.

English passive past perfect

Passive Voice with free online passive past perfect, passive rules and passive voice examples.

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Free tutorial to English active and passive voice. So don't hesitate to learn the difference between active voice and passive voice in writing with the English Grammar index active voice and passive voice.