half an hou 用法

问题描述:

half an hou 用法
短语型的,.

half an hour
半小时
Examples:
The vicar preached to the congregation for half an hour.
那位教区牧师向会众讲道半个小时.
The assignment is few enough to be finished within half an hour.
作业很少,足能在半小时内完成.
The whole job only takes half an hour.
整个工作只需要半个小时.
是这个么?