她在四岁开始学弹钢琴英汉互译过去式She___ ___ toplay the piano at the age of four

她在四岁开始学弹钢琴。
She___ ___ (start learning)to play the piano at the age of four.

She begins to study palying piano at the age of four

She began to study palying piano when she was four years old

She starts to learn to play the piano at the age of four.