错的,应是Did you use to play the piano?
used to表示过去常常做某事.
例句:I used to play football after school.过去我常常在放学后踢球.
be used to do的意思是被用来做某事;be used to doing的意思是习惯于做某事.
used to表示过去常常做某事.
例句:I used to play football after school.过去我常常在放学后踢球.
be used to do的意思是被用来做某事;be used to doing的意思是习惯于做某事.
be used to 被用来做
used to + do:"过去常常"表示过去习惯性的动作或状态,但如今已不存在.
Mother used not to be so forgetful.
Scarf used to take a walk.(过去常常散步)
be used to + doing:对……已感到习惯,或"习惯于",to是介词,后需加名词或动名词.
He is used to a vegetarian diet.
Scarf is used to taking a walk.(现在习惯于散步)
use doing 没有这个用法
虽然你的原问中有错误,但这个问题的确是学生们常常碰到,并且是个考试的热门考点,问得很好.
used to do曾经/过去常常做某事,如:
He used to live in the country.他曾经住在农村.
be used doing习惯于做某事,这里的to 是介词,后面不跟动词原形,跟ing形式,如:
He is used to living in the country now.他现在习惯了住在农村.
be used to do被用于,如:
This knife can be used to cut things.这把刀能够被用于切东西.