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Did he use to wear glasses?
Yes, he did./No, he didn’t.
Grammar Focus
Read
主语＋ used to ＋动词原形...
例如：
I used to go to the cinema, but I never
have time now.
Sb used to do sth.
主语+used to+动词原形
我过去常常吸烟.
他过去在银行工作.
Tom 过去是个警察.
他过去喜欢看电视.
我妈妈过去很瘦.
Used to do sth 过去(常常做某事)
A)主语＋did not use to ＋动词原形......
He did not use to swim in this river,
but he swims here now.
He used to work in a bank.
I used to smoke a lot .
Tom used to be a policeman.
He used to like watching TV.
My mom used to be short.
变否定句
A) Did ＋主语 ＋use to ＋动词原形...？
B) Used ＋主语＋ to ＋动词原形...？美式英语通常用A种形式，英式英语用B种形式。例如：
Did you use to go swimming in the river when you were young?
(三）疑问句式：
He used to work in a bank.