what is present perfect continuous tense??????
Present perfect continuous tense shows that the action is going on continuously, and not completed at this present moment.
I have been working on this project.
The structure of the present perfect continuous tense is:
|subject||+||auxiliary verb||+||auxiliary verb||+||main verb|
|been||base + ing|
Here are some examples of the present perfect continuous tense:
|subject||auxiliary verb||auxiliary verb||main verb|
|+||I||have||been||waiting||for one hour.|