half past eight;eight and thirty
例:eight o'clock and thirty minutes
例:
早上8:30在学校门口集合
At 8:30 morning outside the school gate.
下周星期六早上8:00在学校大门集中,8:30出发。下午2:30返校。
Get together at the school gate at eight next Saturday,start out at eight thirty.Return to school at two thirty in the afternoon.