days
日
解説 Definition
days は day（日）の複数形です。1日ではなく、2日以上の日数や複数の日を表すときに使います。
Days is the plural form of day, used for two or more periods of twenty-four hours or for several particular dates or periods of daylight. In the expression these days, it means the present period or nowadays.
覚え方のコツ Memory Tip
day の規則的な複数形で、語末に -s を付けて days、発音は /deɪz/ と s が有声音 /z/ になります。two days、three days left のように複数の日数を表し、these days はまとまりで「近ごろ」。所有格 day's「1日の」と、複数形 days をアポストロフィの有無で区別しましょう。
Days is the regular plural of day: add -s, but pronounce the ending /z/, giving /deɪz/. Use it after numbers greater than one, as in two days or three days left. Also learn these days as a fixed expression meaning “nowadays” or “during the present period.” Keep the spelling distinct from day’s, which has an apostrophe and is possessive, as in a day’s work. The plural days simply counts or refers to more than one day.
例文
I stayed there for two days.
私はそこに2日間いました。
These days are busy.
この数日は忙しいです。
We have three days left.
私たちにはあと3日あります。
days の類義語・関連語
days の語源・成り立ち Etymology
古英語 dæg（日中の明るい時間）に由来し、ゲルマン祖語 *dagaz「暑い時期」が起源。印欧語根 *dʰegʷʰ-「燃える」と関連し、太陽が燃える時間帯が原義。関連語: daily（毎日の）、today（今日）。dawn（夜明け）も同根で、日の光が広がるイメージ。
Days is the regular plural of day, formed by adding -s. Day comes from Old English dæg and has close relatives in other Germanic languages. Its oldest English uses referred both to the daylight portion of a twenty-four-hour cycle and to the full daily period. The modern plural preserves the base spelling, while the ending is pronounced /z/ because it follows the voiced sound /eɪ/.
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