Differentiate between present progressive and present perfect progressive tense with examples.
A. Present progressive tense describes an action currently happening (e.g., ‘I am eating’), while present perfect progressive tense describes an action that started in the past and is still ongoing (e.g., ‘I have been eating’).
B. Present progressive tense describes an action that happened in the past (e.g., ‘I was eating’)
C. Present progressive tense describes an action that will happen in the future (e.g., ‘I will be eating’)
D. Present perfect progressive tense describes an action that happened in the past and is now completed (e.g., ‘I had been eating’)

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