eleven o'clock 11:00
half past two 2:30
seven o'clock7:00
half past twelve 12:30
o'clock是整点
..past..是几点过几分
half是一半
所以half past就是几点半
eleven o'clock 11:00
half past two 2:30
seven o'clock7:00
half past twelve 12:30
o'clock是整点
..past..是几点过几分
half是一半
所以half past就是几点半