前置詞 時間の表現 at/on/in
基本
狭い → 広い
at → on → in
時間 日 週以上
at three/ on Sunday / in 2018
at night/ on January 19 / in the 15th century
例外
・in the morning, in the afternoon(←→at night)
・on the morning of September 11
・on May 5th(←→in May)
・next, last, one, some, every, this, that+時の言葉→前置詞はつけなくてよい(つけてもよい)
∵全体で副詞化する
-Come visit me some day.
in
~の間(最上級,firist, last, no, only, 否定文で)
-It was the most successful movie in 12 years.
あと~経ったら
-It will rain in three hours.
慣用表現
this time next year 来年の今頃
a week ago today=today last week 先週の今日
today next week 来週の今日