不是说表示半小时的时候,half前加a吗?如one hours and a half 或one and a half h

不是说表示半小时的时候,half前加a吗?如one hours and a half 或one and a half h 一个半小时 英语：是one and a half hour 还是 one and a half hours one and a half hours 和 one hour and a half的意思一样吗 one hour and a half 是一个半小时 两半小时是不是 two hours and a half? one and a half hours 还是hour 一个半小时英文怎么说到底是one and a half hour还是one and a half hours 哪个正确, 一个半小时 英语 one and a half hours 这个hour需要复数吗? 英语翻译是one and a half hours还是one and half an hours还是其他? “一个半小时”的英文one and a half hour（s）需要加S吗? one and a half hours 的同义词组 one and a half day /one and a half days one and a half hours?还是one and a half hour?