Lesson D1, Tone Sandhi for I and BU; Lesson D2, Two-Syllable Groups; Lesson D3, Three-Syllable Groups
Yuen Ren Chao
From The Mandarin Primer
Audio
Lesson D1, Tone Sandhi for I and BU; Lesson D2, Two-Syllable Groups; Lesson D3, Three-Syllable Groups