第1个回答 推荐于2018-08-09
at 用于一天当中的时间:Millie has breakfast at seven o'clock
年龄:Children in China start school at 6 years old
on用于星期几:we do not go to school on Saturday
日期:our summer hoilday starts on July1
特殊的一天某个时间:amy goes swimming on Sunday morning
特殊节日:they have lots of fun on Children's Day
有描述性短语修饰:on a cold winter morning
in用于一天某一时间:my parents watch TV in the morning
月份、季节、年份:in March、in winter、in 2013
for用于一段时间:i will go on a trip to Shanghai for two days本回答被网友采纳