"Half-day tour ends" 可以用英语表示为 "The half-day tour has ended" 或 "The half-day tour is over."
这是一个比较常用的表达方式，来源于英语的常用口语和书面语。下面是一些例句：
The half-day tour of the city has ended. (半日游城市之旅已结束。)
Our half-day tour of the winery has come to an end. (我们的半日游酒庄之旅已结束。)
The half-day tour is over, and it's time to head back to the hotel. (半日游已经结束，是时候回到酒店了。)
希望这些信息对您有帮助。