Notes On Present Perfect Continuous tense - CBSE Class 7 English Grammar
                    FORMING THE PRESENT PERFECT CONTINUOUS
 
The present perfect continuous is made up of two elements: the present perfect of the verb 'to be' (have/has been), and the present participle of the main verb (base+ing).
 
Subject has/have been base+ing
She has been swimming
 
 
Affirmative: She has been / She's been running.
Negative: She hasn't been running.
Interrogative : Has she been running?
Interrogative negative: Hasn't she been running?
EXAMPLE: PRESENT PERFECT CONTINUOUS, TO LIVE
Affirmative Negative Interrogative
have been living I haven't been living Have I been living?
You have been living You haven't been living Have you been living?
He, she, it has been living He hasn't been living Has she been living?
We have been living We haven't been living Have we been living?
You have been living You haven't been living Have you been living?
They have been living They haven't been living Have they been living?
 
FUNCTIONS OF THE PRESENT PERFECT CONTINUOUS
The present perfect continuous refers to an unspecified time between 'before now' and 'now'. The speaker is thinking about something that started but perhaps did not finish in that period of time. He/she is interested in the process as well as the result, and this process may still be going on, or may have just finished.
 
 

Summary

                    FORMING THE PRESENT PERFECT CONTINUOUS
 
The present perfect continuous is made up of two elements: the present perfect of the verb 'to be' (have/has been), and the present participle of the main verb (base+ing).
 
Subject has/have been base+ing
She has been swimming
 
 
Affirmative: She has been / She's been running.
Negative: She hasn't been running.
Interrogative : Has she been running?
Interrogative negative: Hasn't she been running?
EXAMPLE: PRESENT PERFECT CONTINUOUS, TO LIVE
Affirmative Negative Interrogative
have been living I haven't been living Have I been living?
You have been living You haven't been living Have you been living?
He, she, it has been living He hasn't been living Has she been living?
We have been living We haven't been living Have we been living?
You have been living You haven't been living Have you been living?
They have been living They haven't been living Have they been living?
 
FUNCTIONS OF THE PRESENT PERFECT CONTINUOUS
The present perfect continuous refers to an unspecified time between 'before now' and 'now'. The speaker is thinking about something that started but perhaps did not finish in that period of time. He/she is interested in the process as well as the result, and this process may still be going on, or may have just finished.
 
 
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