I m a Japanese university student, and I want to ask English speaker four questions about sushi.?

1.Have you ever eaten sushi in Japan?
2.Have you ever eaten sushi in your own country?
3.Do you think sushi you have eaten in place other than Japan is different from Japanese real sushi? Why?
4.Do you think Japan should tell other countries real sushi? Why?

If my English is wrong, please out an error in text.
Update: I would like to get more answers, so please answer my questions.
12 answers 12