English Grammar : Present Perfect Continuous

Present Perfect Continuous Tense

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Structure of Present Perfect Continuous Tense
Subject + have/ has + been + V ing

When do we use Present Perfect Continuous Tense
1. When the situation happened in the past and is continuing until the present

I have been typing this letter for 2 hours now (still typing while saying.)
John has been waiting for marry for 3 hours (still see John waiting while saying.)

2. When the situation happened in the past and just ended a short moment ago.

I have been typing this letter for 2 hours now (just finish typing while saying.)
John has been waiting for marry for 3 hours (just see John stop waiting while saying.)

Must know about Present Perfect Continuous Tenses

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