本帖最后由 billzhao 于 2012-5-19 12:12 编辑 : j! a" x: Z) b/ P0 U" I& i ! R; m7 V- D6 i4 \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。 $ H* a) n& U4 X9 `4 V! N* t5 B # {! N" `6 n7 A' d, ?7 M q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. 0 [5 L% c% U6 l4 _& p$ m5 ]0 V9 n1 O/ g