再见的英语说法起码有20种：

1. Good day祝你一天愉快2. Bye bye再见3. So long再见4. Cheerio加油5. Be seeing you再见6. Toodledoo再见7. Ciao再见8. Cheers欢呼，喝彩9. Take care保重10. Catch you later待会儿见11. Farewell再见12. Have a nice day祝你一天过的愉快13. All the best祝一切都好14. Ta ta for now再见15. See you later alligator!再见16. Don’t do anything I wouldn’t do!乖乖的喔！再见17. Have fun玩的开心18. Good luck祝你好运19. Take it easy放松点吧20. Talk to you later待会儿见