listen ,my sister playing the guitar in her room(改错)
问题描述：
listen ,my sister playing the guitar in her room(改错)
答
listen ,my sister is playing the guitar in her room
少了be动词！
答
be doing 表示正在进行的一个状态，listen 也就是说你先在正在听，所以用现在进行时be doing
文中少be 动词 所以在 playing 前加个is
答
listen ,my sister is playing the guitar in her room
答
Listen ,my sister is playing the guitar in her room .