They are used:

To describe 'experiences'
To describe the duration of continuing states and actions
To describe a past action with a result in the present

We use the Present Perfect for actions which started in the past and are still continuing.

The present perfect is often used for an action which started at some time in the past, and is still continuing now. Often, the words for (with a length of time) and since (with a starting time) are used with the present perfect.

*We use the Present Perfect for actions which happened at some unknown time in the past

Sometimes, it's important to say that something happened (or didn't happen), but it's not important (or not known) when it happened. In this case, we can use the present perfect too. In this case, we often use the words already, yet, ever or never along with the present perfect. These words usually go before the past participle in the sentence.

Have you ever been in trouble?
Have you even gotten a tattoo?

We use the present perfect continuous to talk about an even which started in the past and is continuing now and will continue into the future. Usually, the sentence contains a phrase starting with for or since to show the time period.

I have been learning English for six years.
They have been living in Paris for the last eight months.

Present Perfect'in Continious formu nasıl ifade edilir ve ne durumlarda kullanılır?

We make the Present Perfect Continuous by using have/has, been and the -ing form of the verb (the present participle):

(subject) + (have/ has) + (been) + (present participle)

I have been working...
She has been doing her homework.

We use the Present Perfect Continuous to talk about an event which lasted for some time and recently finished; the effects of this event are still apparent:

Why are you huffing? I have been running.
I have been painting the house this weekend.

I've been working here for five years, you know!

I've been living here for ten years. I think it's time I moved on.