1 . an hour
an egg一个鸡蛋an hour一小时an还用在发音以元音开头的单个字母前面:.
2 . one hour
active swimming for one hour three times a week ., 积极游泳一小时, 每周三次.
3 . for an hour
and you know what ? you can easily earn money by just pushing few buttons and wait for the machine to finish printing . $ 100 for an hour !你知道印海报也可以轻松赚钱吗?只要按几颗钮,然后就等机器把海报印完。一小时$100!
4 . hour
and if you can't be comforted , if you must shatter this hour of peace , think of the mark on the wall .假如你无法得到安慰,假如你一定要破坏这一小时的平静,那就去想想墙上的斑点吧。