Q1. How are 世 and 代 (read as yo) used?
Q2. What does the かえればな mean ほかの鳥でも呼べるのかい。鳴きかたをかえればな。?
Q3. What has been your best experience as a Japanese speaker?
Q4. Different buts? Their different meanings?
Learn Japanese Online: http://YesJapan.com
Japanese From Zero! (http://yesj.us/I) book series written by George Trombley and Yukari Takenaka