I wanted / have wanted         to go to Japan for several years.


나는 원헀다  원해 왔다     일본에 가는것을  몇년동안.



몇년동안 원해 왔다는건지, 몇넌동안 가는것을 원했다는건지 햇갈려서요...


I wanted /   to go to Japan for several years.
나는 원했다  일본에 몇년동안 가는것을

i have wanted         to go to Japan for several years.

   나는 몇년동안 원해 왔다        일본에 가는것을  

둘다 되는거같아서....


답은

I  / have wanted         to go to Japan for several years.

라는데 왜그런거죠?