Past perfect tense is formed by using the past tense of the auxiliary verb "to have" (had) followed by the past participle of the main verb. It is used to show an action that occurred before another action in the past.
For example:
She had already eaten dinner by the time I arrived.By the time they got there, the show had already started.He had studied for hours before taking the exam.
In these sentences, the action in the past perfect tense (had eaten, had started, had studied) occurred before another action in the past (I arrived, they got there, taking the exam).
Past perfect tense is formed by using the past tense of the auxiliary verb "to have" (had) followed by the past participle of the main verb. It is used to show an action that occurred before another action in the past.
For example:
She had already eaten dinner by the time I arrived.By the time they got there, the show had already started.He had studied for hours before taking the exam.In these sentences, the action in the past perfect tense (had eaten, had started, had studied) occurred before another action in the past (I arrived, they got there, taking the exam).