用used to造3个句子再变成肯定句 否定句 一般疑问句 回答句 同意句
问题描述：
用used to造3个句子再变成肯定句 否定句 一般疑问句 回答句 同意句
答
1.肯定句：He used to be a teacher.同义句：He was a teacher in the past.否定句：He usedn't to be a teacher.或：He didn't use to be a teacher.一般疑问句：Used he to be a teacher?或：Did he use to be a t...