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Unformatted text preview: all day, etc.
Begin with ‘has’ or ‘have’ + ‘been’ followed by -ing form of the verb.
—They have been watching television for three hours.
NOTE: When the present perfect progressive is used without reference to time, it indicates a general activity in
—I have been thinking about renting a car.
2. PAST PERFECT PROGRESSIVE
This tense emphasizes the duration of an activity that was in progress before another activity or time in the past. 62
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Contact us: email@example.com www.itdunya.com Chapter 18 Begin with ‘had’ + ‘been’ followed by -ing form of the verb.
—I had been waiting for an hour when the doctor arrived.
3. FUTURE PERFECT PROGRESSIVE
This tense indicates the duration of an activity that will be in progress before another time or event in the
Begin with ‘will have’ + ‘been’ followed by -ing form of the verb.
—When he retires, he will have been working for 40 years. EXERCISES
Usage of the Perfect Pr...
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- Winter '13