one and half还是one and a half

英语翻译是one and a half hours还是one and half an hours还是其他? one and half还是one and a half an apple and a half以及one and a half apple和half an apple分别用is还是are? one and a half hour看做单数还是复数?half an hour one and a half hours 还是hour one month and a half和one and a half month有区别吗?还有one hour and a half和one and half an hour哪个对? one and a half half an hour?half an hour、an hour and a half 、 one and a half hours和one half hour都能表示一个半小时吗? half的用法是 one and a half years 还是one and a half year?half具体的用法? 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 one and half a minute’s还是one and half a minutes’ one and half 还是 one and a half比如一个半月（1.5个月） half an hour 的主谓一致问题half an hour 作主语时,谓语动词应该用单数还是复数?one hour and a half 呢?