0.5 hour 还是0.5 hours

0.5 hour 还是0.5 hours 1.5 hours 还是1.5 hour one and a half hours 还是hour a half hour还是a haif hours 营业时间的英语翻译到底是business hour,还是business hours? 是a half hours还是a half hour?a half后面是单数还是复数啊? two-hour 能不能two-hours 是one and a half hours还是one and a half hour 是one and half hours还是one and half hour?RTRT! one and a half hours还是one and a half hour one and a half hours?还是one and a half hour? 是one and a half hour 还是 one and a half hours 一个半小时 英语：是one and a half hour 还是 one and a half hours 用英语怎么说 两小时的路程?是two hours’drive还是two hour’s drive 请问“两个半小时”是“two and a half hour”还是“tow and a half hours”? 英语超过一小时是more then one hour还是more then one hours?(zhu One and a half______a.hour b.hours 请问 24 hour 和 24 hours 区别?