Past Perfect Progressive (Step-19)
What is Past Perfect Progressive Tense? PAST TENSE is divided into Past Perfect Progressive Affirmative Sentence = Sub + had + been+ V1-ing+ Obj. + Others. Negative Sentence = Sub + had + not+ been+ V1-ing+ Obj. + Others. Interrogative Sentence = Had + Sub + been+ V1-ing+ Obj. + Others? Negative and Interrogative Sentence …
