half an hour=?（两个单词）

half an hour=?（两个单词） half hour =half an hour half hour half an hour 的意思有和区别? Half an hour =什么? 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 later half an hour造句 Half an hour. he spent half an hour swim.=It( )( )half an hour( )( ). we read english for half an hour every day(对for half an hour提问） it took him half an hour to walk there.划线部分提问（half an hour） can you( ) （ ）finish the homework in half an hour?那两个空怎么填？ an hour and half还是an hour and a half half an hour or hour中文 after half an hour.是什么意思 half an hour? 什么意思? it's half an hour