本帖最后由 billzhao 于 2012-5-19 12:12 编辑 ; i; [' M1 Z& `! E
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好像南方或者北方有的地方s sh不分,下面视频应该有所帮助。8 K) D0 c) U# G. j
- C6 r8 N' f X7 m3 r很喜欢老师的自信,她说 It's simple. It's easy. Once you watch this video, you get it, and you'll never make the mistake again. People will understand you, and your life will be fantastic. 7 G1 a/ T" o) J6 n' Y Q& E 9 ^# I$ X _+ u# w9 B4 ~" a( ?! O! `/ r3 s