a half hour later\after half an hour\after half an hour late

a half hour later\after half an hour\after half an hour late half an hour later after half an hour.是什么意思 half an hour or a half hour? a half hour还是half an hour? they will go back () A after half an hour B in half an hour it stopped raining after half an hour.对after half an hour提问 是half hour还是half an hour? half hour =half an hour an hour and half还是an hour and a half a half of an hour After half an hour,the next bus came.(同义句转换) Half an hour （