1. Overview:
The Present Perfect Continuous tense is used to show actions that started in the past and continue to the present or have recently stopped but have effects in the present. It emphasizes the duration of the action. Time expressions help indicate how long the action has been happening.
2. Cases of Usage:
For: to show the duration of an action that started in the past and continues to the present.
Example: I have been studying English for two years.
She's been reading this book for two hours.
Since: to indicate a specific starting point in the past.
Example: She has been working here since 2019.
All day: to express actions that have been happening continuously during the day.
Example: They have been cleaning the house all day.
Recently: to describe actions that have occurred not long time ago.
Example: I have been reading a great book recently.
Lately: to refer to actions that have taken place in a short time before now.
Example: We have been going to the gym lately.
