1.Brush your teeth,please.(改为否定句) 2.I am good at playing the piano.(改为否定句)
问题描述：
1.Brush your teeth,please.(改为否定句) 2.I am good at playing the piano.(改为否定句)
答
1.Brush your teeth,please.
否定句
Don't brush your teeth,please.
2.I am good at playing the piano.
否定句
I am not good at playing the piano.