1. The Present Perfect Continuous

2. Form (Affirmative)
S+ have been V-ing + Comp.
has
I have been sitting in the sun since this morning.
She has been looking for her keys for three hours.

3. Negation
S+ have NOT been V-ing + Comp.
has
They haven’t been turning in their homework lately.
Ron hasn’t been feeling well recently.

4. Questions
(Wh-word) + have + S+ been V-ing+Comp.?
has
What have you been doing for the last three hours?
How long has she been learning English?

5. Present Perfect/Present Perfect Continuous
When are they similar?
When are they different?

6. Mr. Brown has lived here since 1960.
He’s taught English for a long time.
He’s worn the same jacket for years.
Mr. Brown has been living here since 1960.
He’s been teaching English for a long time.
He’s been wearing the same jacket for years.

7. live, teach, wear, work, study, stay, and feel
We use these verbs with the present perfect or the present perfect continuous with for and since with no difference in meaning. (actions that started in the past and are continuing up to now).

8. I’ve waited for an 3 hours.
I’ve thought about this for days.
I’ve been waiting for 3 hours. I am very annoyed.
I’ve been thinking about this for days. I can’t stop.

9. The meaning becomes different when we place focus on the ongoing activity; the length of time a situation lasted. (more intense or emotional situations)
repeated action Vs. nonstop action

10. I’ve read a book about astronomy.
(I finished it at some indefinite time in the past)
I’ve been reading a book about astronomy.
(I am not finished OR I’ve just finished)

11. 3- The present perfect can express a completed action that may or may not have been recent. The present perfect continuous suggests that an activity is continuing up to the present time or was very recently completed.
indefinite past time Vs. still happening or just finished

12. How many pages of that book have you read?-
Mary has written ten letters today.-
They have played tennis three times this week.
How long have you been reading that book?-
Mary is still writing letters. She has been writing letters all day.
They’ve been playing tennis since 2 o’clock.

13. 4- The present perfect- number of times/ how many/ how often
The present perfect continuous- how long/all day
How many Vs. how long

14. State Verbs I have been having this car for three years.
I’ve had this car for three years.

15. 1. We use present perfect continuous to talk about an action or event that started in the past and is still happening now.
I've been waiting for over an hour. (I'm still waiting now)
It's been snowing since 8am. (It's still snowing now)
You've been playing a lot of tennis recently.

16. 2. We often use How long in questions.
How long have you been learning English? (You started learning in the past and are still learning now)

17. 3. We use present perfect continuous to talk about an activity or event that has recently finished and has a result or consequence now.
She's tired because she's been working hard.
I have no money left because I've been shopping.

18. 4. We use present perfect continuous to focus on the action and not on the completion of the action.
She's been writing a book. (Focus on the action) She's written a book. (Present perfect simple - focus on the result)
They've been negotiating the contract. (Focus on the action, it's not important if it's finished or not) They've negotiated the contract. (Focus on the result, the negotiation is finished)

19. 5. Conclusions and Excuses
I am sorry I haven’t called you. I haven’t been feeling well lately.
Half of my cake is gone. Some has been eating it.

20. Credit: http://www.eslbase.com/grammar/present-perfect-continuous