是a half hours还是a half hour?a half后面是单数还是复数啊?

是a half hours还是a half hour?a half后面是单数还是复数啊? 英语翻译是one and a half hours还是one and half an hours还是其他? a half hour还是a haif hours one and a half hours 还是hour 是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 请问“两个半小时”是“two and a half hour”还是“tow and a half hours”? one hour and a half作主语谓语是单数还是复数?one and a half hours呢? one and a half hours还是one and a half hour one and a half hours?还是one and a half 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,还是都对?到底要不要加S? 2个半小时用英语说应该是two and half an hours,还是two and a half hours? one hour and a half 是一个半小时 两半小时是不是 two hours and a half? 两个半小时是two and a half hours?two hours and a half?hour后有s吗 快,2分钟内回答追加100分!要写理由!1、Please say something about your trip____ China.A.on B.at C.to D.from2、The market isn't far from here.It's only ____ bicycle ride.A.half an hours' B.half an hour's C.half an hour D.an houur and a hal The city is about_______ride from here.one and a half hours' 还是one-and-a-half-hour two hours and a half two and a half hours有什么区别