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    Past Perfect continuous Tense Tips & Structure - 10-17-2013 07:58 PM

    Learn English Online – English Tenses Notes and Tips for Students who wants to learn Present, Past, Future and Progressive Tenses Online. Perfect, Indefinite & Continuous Tenses Tips and Structure and Notes online for the students.If there is not time reference or sense of time reference, then it is not Past perfect continuous tense because there is no hint about the time of action when it started in past or continued for some time period, so it seems just an ongoing action in past which resembles “past Continuous tense”.So the reference of time differentiates between Past perfect continuous tense and past continuous tense.Rules: An auxiliary verb “had been” is used in sentence. 1st form of verb (base verb) +ing (present participle) is used as main verb in sentence. “Since” or “for” is used before the “time reference” in sentence.If the time reference is exactly known such as 1995, 4 O’clock then “since” is used before the time in sentence. If the time reference is not exactly known such as three hours, six years, four days, then “for” is used before the time in sentence.Time reference such as 3 hours or 5 days is not exactly known because we don’t know that about which three hours a day is told in sentence or about which 5 days in a month is told in sentence. While the 1995 is exactly known time.Structure of sentence.

    Positive Sentence.
    • Subject + Auxiliary verb + main verb (Present participle) + Object + Time reference
    • Subject + had been + (1st form of verb or base verb + ing) + object + time    reference

    Examples
    .
    I had been waiting for him for one hour.
    She had been playing chess since 7 O’clock.
    Negative Sentence.
    • Subject +”Not” between the Auxiliary verbs + main verb (present participle) +     Object + Time reference
    • Subject + had not been + (1st form of verb or base verb + ing) + object + time    referenceTo make negative sentence, the word “not” is added inside auxiliary verb, so it becomes “had not been”.
    Examples.
    I had not been waiting for him for one hour.
    She had not been playing chess since 7 O’clock.Interrogative Sentence.
    • Auxiliary verb+ Subject + Auxiliary verb + main verb (present participle) + object +    time reference
    • Had + Subject +  been + (1st form of verb or base verb+ing) + object + time    referenceInterrogative sentence starts with auxiliary verb “had” and auxiliary verb “been” is used after subject in sentence.
    Examples.
    Had I been waiting for him for one hour?
    Had she been playing chess 7 O’clock?


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