否定句是My sister doesn't teach English in a small town.
特殊疑问句是
对主语部分提问:Who teaches English in a small town?
谁在小镇上教英语?
对主语的定语提问:Whose sister teaches English in a small town?
谁的姐姐在镇上教英语?
对宾语进行提问:What does your sister teach in a small town?
你的姐姐在镇上教什么?
对谓语进行提问:What does your sister do in a small town?
你姐姐在镇上做什么工作?
对地点状语进行提问:Where does your sister teach English?
你的姐姐在哪里教英语。