学拼音 (Learn Chinese Pin Yin)
声母: b, p, m, f, d, t, n, l, g, k, h, j, q, x, z, c, s, zhi, chi, shi, r, y, w
单韵母: a, o, e, i, u, ü
复韵母: ai, ei, ui, ao, ou, iu, ie, üe, er
鼻韵母:
5 个前鼻韵母: an, en, in, un, ün
4个后鼻韵母: ang, eng, ing, ong