half past 0ne ,前不加a,而 a quarter tohalf past 0ne ,前不加a,而 a quarter to f0ur,前为什么加a?

half past 0ne ,前不加a,而 a quarter tohalf past 0ne ,前不加a,而 a quarter to f0ur,前为什么加a? half past half past a quarter past half 的意思 4点半是“a half past four还是“half past four快 为什么7:30是half past seven.而不是at a half past seven ---when do you usually go to bed at night?----at ( ) eleven.half past,a half past,half hour pasta half hour past,为什么选a 英语翻译twenty past ten.a quarter past twelve .one o'clock .half past three.ten past four . 根据英文写出相应的时间1） half past six 2) ten past twelve 3) half past twelve 4) a quarter past nine5) a quarter to two 有有没有a half past three 的说法 抑有没有a half past three的说法 At half past seven l c______ a train. at half past six 什么时候用half past it 's half past half past seven, it's half past half past nine