before后可以接half an hour He went to Hangzhou before half an hour .before 后可以接”half an hour ”.为什么

before后可以接half an hour He went to Hangzhou before half an hour .before 后可以接”half an hour ”.为什么 where were you后应该ten minutes before half an hour ago now just now 选哪个 I will remind you again half an hour before he He was here().A.half an hour before B.half hour ago C.half an hour ago He thought that the bus had left__.A.for half an hour B.before half an hour C.half an hour before half an apple 还是a half apple还是都可以 Half an I have to-----------English for half an hour before breakfastA.ListenB.readC.lookD.talk May you be in heaven a half an hour before the devil knows you are __you read a book half an hour__A.Did；ago B.Were；before C.Did；before D.Were；ago 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 an hour later half an hour造句 Half an hour. in half an hours My parents will come back _____ half an hour.A.after B.before C.in D.for She looks ____ today.A.happy B.happily C.worry D.like happyShe has ___- brothersA.not B.not a C.no D.no manyIt took us ____ to get to the top of the mountainA.one hour and a half hourB.One and one half hourC.an hour and a half hourD.one and a half ho a half hour还是half an hour?