Sentences:
- And it has been a pleasure watching you soar.
- Financially it has been a great move.
- At best it has been a slow recovery.
- Overall it has been a difficult weekend.
- So it has been a seamless transition.
- And it has been a lot of hard work getting him back to health.
- But it has been a struggle for them to maintain profitability.
- Still, it has been a terrific season for Arizona.
I don't understand, are there Present Perfect or Perfect Continuous or other? For perfect I don't see some result of action. For perfect continuous I don't see -ing at the end of the verb. Am I right understand that “it has been” in all these sentences almost equal “it was”? Can you give me a link where this grammatical construction (it has been) is explained in detail (example of using)?