English Lesson: Past Perfect Continuous Tense & Exercises Introduction: The past perfect continuous tense, also known as the past perfect progressive tense, is used to express an ongoing action that started in the past, continued for some time, and was still in progress at a certain point in the past. In this lesson, we will explore the structure, usage, and examples of the past perfect continuous tense. 1. Structure: The past perfect continuous tense is formed using the following structure: Positive Form: Subject + had been + Verb-ing (present participle form) + Object Negative Form: Subject + had not been + Verb-ing (present participle form) + Object Question Form: Had + Subject + been + Verb-ing (present participle form) + Object? 2. Usage: The past perfect continuous tense is used to: Emphasize the duration of an action that had been happening before another action or event in the past. Describe an action that started in the past and continued up to a certain point in the...
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