UNIT 10. Present perfect continuous and simple (I have been doing and I have done)
A. Study these example situations:
Ann's clothes are covered in paint. She has been painting the ceiling.
Has been Painting is the present perfect
We are interested in the activity. It does not matter whether something has been finished or not. In this example, the activity (painting the ceiling) has not been finished.
The ceiling was white. Now it is blue. She has painted the ceiling.
Has painted is the present perfect simple.
Here, the important thing is that something has been finished. 'Has painted' is a completed action. We are interested in the result of the activity (the painted ceiling), not in the activity itself.
Compare these examples:
* My hands are very dirty. I've been repairing the car. The car is OK again now. I've repaired it.
* She's been smoking too much recently. She should smoke less. Somebody has smoked all my cigarettes. The packet is empty.
* It's n
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