Mary could play piano when she was ten years old 这句话哪里错了?
问题描述：
Mary could play piano when she was ten years old 这句话哪里错了?
答
少了the，乐器前面要加the
答
缺少the ，乐器前必须要加上the
而球类则不能加the
play the violin
play soccer
答
应该是play the piano
ten years' old
不知前半部分加上already会不会更贴近文意？
答
玛丽10岁的时候就会弹钢琴了。
答
play the
答
是play the piano，表示弹西洋乐器前要加the