can someone please confirm my turkish is correct for the following

last week = gecen hafta

last year = gecen yil

2 years ago = iki yil once

how do you say "have you been to...?

I have corrected your incorrect Turkish letters above.

As a learner I thought "have you been to .....?" was

XXXXX´(y)a/e gittin mi?

Doktora gittin mi? Have you been to the doctor?

Istanbul´a gittin mi? Have you been to Istanbul?

Türkiye´ye gittin mi? Have you been to Turkey?

Avustralya´ya hiç gittin mi? Have you ever been to Australia?

But these examples can also translate as

´Have you gone to ......?´, ´Did you go to........?´

I have also seen this next combination used by Turks

XXXXX´da/de bulundun mu?

Ankara´da hiç bulundun mu? Have you ever been to Ankara?

Türkiye´de hiç bulundun mu? Have you ever been to Turkey?

(Literally like - Have you ever lived in Turkey?)

Hopefully a Turk will say which form is more commonly used 

Henry

Thanks for your help and correction.