Perfect Tenses / Continuous
If you have read about the perfect (complete) tenses and the continuous (incomplete) tenses, you know that they describe opposite situations. Nevertheless, it is possible to combine them and in this way we get:
- Present Perfect Continuous ("I have been choosing")
- Past Perfect Continuous ("I had been choosing")
- Future Perfect Continuous ("I will have been choosing")
They describe an action that was / will be in progress and then finished / will finish.