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D. used to telling 2. This sign is used ___________ tourists to stay away from the lion in the zoo. A. to warn B. to warning C. to make D. to making 3. — ___________ you ___________ go to school by bike? — Yes. But now I usually go to school by bus. A. Did。 一般疑問句 Did sb. use to...?/Used sb. to...? Did you use to play the piano?=Used you to play the piano? 你過去常常彈鋼琴嗎? 反意疑問句 附加疑問部分可用didn’ t或 usedn’ t He didn’ t use to drink, did he? 他過去不經(jīng)常喝酒,對(duì)嗎? He used to drink, usedn’ t he? 他過去 常常喝酒,對(duì)嗎? 相似短語 be/get/bee used to doing sth. 習(xí)慣于做某事