an hour one houran hour 与one hour的区别是什么

an hour one houran hour 与one hour的区别是什么 a one -hour还是an one-hour There is( h in the word hour.A.a B.an C./ D.one 冠词 an one-hour 还是a one-hour 是a one-hour ducumentary还是an one-hour documentary more than one hour和more than an hour区别 half an hour 与 one half hour区别 是less than an hour还是less than one hour? The train is running fifty miles ______.　　A.anThe train is running fifty miles ______.　　A.an hour B.one hour C.the hour D.a hour 为什么答案是a?h应该是辅音字母歌哈 为什么an hour中an后可加h这个辅音 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? One and a half an hour 和An hour and a half 有什么不同 No one knows what (happen)in half an hour. After lunch,I sleep for an hour ( ) (one) one and a half hour看做单数还是复数?half an hour one hour和an hour,两个是无差别的吗?如题 an hour nad a half 还是one hour nad a half 56.The film will last for______A.an hour and a half B.an hour and half C.one and a half hour D.one hours and a half