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English Grammar Reference:
Present Perfect 1 - An experience in your life

The important thing to remember with the Present Perfect is that we use it when there is a connection between the past and the present.
|_________||||||||||||||||||||||||||||||||______________________|
Past
Present
Future

So we must use the present perfect for an experience in your life because your life started in the past and is continuing:

|||||||||||||||||||||||||||||||||||||||||||||||______________________|
you were born
Present
Future

So every experience in our life we talk about and don't specify exactly when it happened, we have to use the present perfect:

I have eaten Indian food.
I have seen Bob Dylan in concert.

Note that if we say when it happens we have to use the past simple:

I ate Indian food last night.
I saw Bob Dylan in concert in 1992.

Look at the construction of the present perfect:

Subject

to have

past participle

 

I
She
They

have
has
haven't

seen
been
visited

"Dances with Wolves".
to California.
Pisa.

The verb to have is an auxiliary verb so we can use the contracted form, particularily in conversation:

I've played ice hockey.
He's driven a Ferrari.
They've been to Brazil.

To make a question we follow the same pattern as for every tense:

Question word

Auxiliary 

Subject 

Verb

 

Have

you

(ever) been

to Italy?

 

Have

you

(ever) played

cricket?

How many times

has

she

seen

Titantic?

We use ever to underline the fact that we are talking about some point in your life. We could omit it but it is more common to use it, although only in the question.