介词on in用法作用

来源:百度文库 编辑:神马文学网 时间:2024/04/29 23:04:11
in表示较长时间,如世纪、朝代、时代、年、季节、月及一般(非特指)的早、中、晚等。
  如 in the 20th century, in the 1950s, in 1989, in summer, in January, in the morning, in one’s life , in one’s thirties等。
  on表示具体某一天及其早、中、晚。
  如on May 1st, on Monday, on New Year’s Day, on a cold night in January, on a fine morning, on Sunday afternoon等。
  at表示某一时刻或较短暂的时间,或泛指圣诞节,复活节等。
  如at 3:20, at this time of year, at the beginning of, at the end of …, at the age of …, at Christmas, at night, at noon, at this moment等。
  注意:在last, next, this, that, some, every 等词之前一律不用介词。如:We meet every day.