如何使用half hour ?如何使用half hour 组成以表达的时间？

如何使用half hour ?如何使用half hour 组成以表达的时间？ a half hour还是half an hour? 是half hour还是half an hour? half an hour or a half hour? half an hour 与a half hourhalf an hour 是半个小时,但a half hour如何翻译呢,六人行里有这么一句 Oh God...well,it started about a half hour before the wedding. half hour =half an hour half hour half an hour 的意思有和区别? half an hour later half an hour造句 half a hour Half an hour. a half hour对吗 half an hour or hour中文 a half hour one hour对不对? half past hour和half to hour的区别 half an hour 和a half hour有什么区别? half an hour和a half hour一样吗? half an hour 与 one half hour区别 half an hour和a half hour一样吗?