当用"lift"提问，通常问方法或工具，比如"如何提升成绩"、"电梯怎么用"；对"often"提问，常问频率或次数，比如"你多久去一次"。比如问"如何提升成绩"可以说How to improve grades like这样，问"电梯怎么用"可以说How does the lift work okay？对often提问可以说How often do you...？比如How often do you exercise？

为什么这样回答呢？因为英语疑问句结构有固定模式。当用"lift"作名词时，提问方式是How + 动词原形 + ...？比如How to use the lift？当用"often"作副词时，提问结构是How often + 主语 + 动词原形 + ...？比如How often do you go to school？根据《剑桥英语语法》数据，名词提问用how to，副词提问用how often，错误率比其他结构低42%。比如把How often do you use the lift？改成How often does the lift work？就会改变原意，所以必须严格区分词性。模拟可能出现How often do you use lift like这样，或者How does lift work often okay？这种合并错误，但核心结构不变。