❶日, 1日 ⦣ 24時間を単位とする1日.
a cold day
a cold day
寒い日
on a rainy day
on a rainy day
雨の日に
(on) that day
(on) that day
その日に
one spring day
one spring day
ある春の日に
⦣ ×on one spring day としない.
three times a day
three times a day
1日に3回
What day is it (today)?
♔基本What day is it (today)?
きょうは何曜日ですか.
⦣ 「何日ですか」の意味ではないことに注意 （date 会話）. What day of the week is it （today）? ともいう.
What day of the month is it (today)?
What day of the month is it (today)?
きょうは何日ですか.
⦣ What is the date （today）? と同じ.
Rome was not built in a day.
ことわざRome was not built in a day.
ローマは1日で建設されなかった[ローマは1日にして成らず].
⦣ 「大事業を完成するには長い年月の努力が必要だ」の意味.
for three days
for three days
3日間
On school days I study and on weekends I play.
On school days I study and on weekends I play.
私は学校のある日は勉強し, 週末は遊ぶ.
❷昼間, 日中 ⦣ 日の出から日没にちぼつまでの明るい間.
as clear as day
as clear as day
（言葉の内容など） （昼間のように）はっきりと, 明快に
He slept during the day and worked during the night.
反対語He slept during the day and worked during the night.
彼は日中寝ねて夜働いた.
When we woke, it was day.
When we woke, it was day.
私たちが目を覚ました時には（もう）夜が明けていた.
The days grow longer in spring.
The days grow longer in spring.
春には日が長くなる.
❹ふつう days で時代
in early [old] days
in early [old] days
昔
in my junior high school days
in my junior high school days
私の中学時代に
In our grandfather's days there was no computer.
In our grandfather's days there was no computer.
私たちのおじいさんの時代にはコンピューターはなかった.
all day longall dayall day (long)
day after dayday after day
day and nightday and night
day by dayday by day
一日一日, 日ごとに
It is getting warmer day by day.
It is getting warmer day by day.
日ごとに暖かくなってきています.
from day to dayday to day(from) day to day
in those daysin those days
one of these daysone of these days
the day after tomorrowday after tomorrow(the) day after tomorrow
the day beforethe day before
the day before yesterdayday before yesterday(the) day before yesterday
(the) day before yesterday
the other daythe other day
先日
I talked with him the other day.
I talked with him the other day.
私は先日彼と話しました.
these daysthese days
最近, この頃ごろは ⦣ ×in these days としない.
