幼儿学习钢琴由于关节稚嫩，大指凹陷（第二指关节瘦）是常见的毛病。大指在钢琴弹奏中的功能很多，正确使用特别重要。弹奏音阶或音阶曲调时，大指成为连接的关键穿指、跨指便是第二关节最擅长之处。但在大指独立弹奏时，第二关节不用左右动，只跟着指尖上下动。幼儿关节很弱 Parents learning piano because immature joints, the big dent (second joint thin) is a common problem. Big finger in the piano playing a lot of functions, the correct use is particularly important. When playing a scale or scale melody, the big finger is the key to the connection, and the second finger is the best at it. However, in the independent fingering, the second joint need not move around, only with the fingertips move up and down. Infant joints are weak