I have gone to Sri Lanka. vs I have been to Sri Lanka.

English as a Second Language English Vocabulary, Grammar and Idioms
1

Dear Mr Torsten

Please advise me the different and correctness of following sentences

  1. I have gone to Sri Lanka
  2. I have been to Sri Lanka.

Thanks

Kums

2

I think

1.) I have gone to Sri Lanka.------> I am in Sri Lanka.—>now
2.) I have been to Sri Lanka. ------> I was in Sri Lanka.—>before

3.) I have been in Sri Lanka.-----> I am in Sri Lanka for days.—>for days (now)
4.) I had been in Sri Lanka.-----> I was in Sri Lanka for days.—>for days (before)

For example:

–Where is Jim？
–He has gone to England．
–My father isn’t here．He has gone to England．

–My father has been to Sri Lanka twice．
–I have never been to Sri Lanka．

–I have been in Sri Lanka for three years．
–He has been in Sri Lanka for half a month．