作者: Derrick Chen
【時間介係詞】2 分鐘搞懂 In, On, At！讓你再也不怕用錯！
in, on, at 用法的差別就在於：
at：一個準確、特定的時刻
in：月份、季節、年、世紀、一段長而非特定的時間
on：特定日期、星期
邏輯就只是這樣而已！下面幫大家統整常用的時間用法，一起練習看看吧！
in + (months, years, centuries, long periods)
in the morning
in the afternoon
in the evening
in January
in February
in March, 2015
in the spring
in the summer
in the fall
in the winter
in 2015
in the past year
in the 18th century
in the week
in the past
in the future
on + (days and dates)
on Monday
on Tuesday morning
on Wednesday afternoon
on Thursday evening
on Friday night
on 28, April
on New Year’s Day
on Christmas Day
on the weekend
at + (precise time)
at 07:11
at 10 o’clock
at noon
at noon yesterday
at night
at midnight
at the same time