Past Perfect Tenses
This section details the intricate relationships between past perfect simple and continuous forms.
Definition: Past Perfect Simple (had + past participle) describes actions that occurred before another past action.
Example: "They had been sleeping" demonstrates Past Perfect Continuous usage.
Highlight: Past Perfect Simple emphasizes results, while Past Perfect Continuous focuses on the progress of actions.
Vocabulary: Signal verbs include "already," "before," "by the time," and "yet" for Past Perfect Simple.


































