( Does ) your father ( do well in ) fishing
分析 be good at = do well in 擅长于……
加油!不明白再问!为什么不是Does your father well in 呢？do well in 里的do 可以做助动词吗？注意： do well in 中的do 是实义动词，不是助动词，故变一般疑问句是加助动词，主语是三单，故加Does