原田英語の時事英語ジュニア|英語ニュース ワークシート(中学生レベル)
Class ____ No. ____ Name ____________________
サマータイムは英語で?アメリカで一年中なら暗い朝の登校が20億回以上ふえる
Summer Time All Year Means Darker Mornings
1Scientists in the United States say keeping summer time all year would make many school mornings dark. In summer time, clocks move one hour ahead. Then the sun comes up later on the clock.
2A team from the University of Washington studied schools in 14 states. They looked at when schools start and where they are. In Georgia alone, there would be about 71 million more trips to school before sunrise. Across the country, the team says there would be at least 2 billion more.
3Morning light helps set our body clock. This clock helps control sleep, mood, and hunger. Teenagers' body clocks are set later than small children's or adults'. The researchers say dark mornings would take away the morning light that students need.
4The team also looked at road accidents. Deadly accidents with students on foot were about twice as likely before sunrise as in daylight.
Words 単語
| aheadA2 | 副 | 前へ、先へto a later time or a place in front |
| studiedA1 | 動 | 調べた、研究したlooked at something carefully to learn about it |
| sunriseB1 | 名 | 日の出the time when the sun comes up |
| billionB2 | 名 | 10億the number 1,000,000,000 |
| body clockA1 | 名 | 体内時計the system inside you that tells you when to sleep |
| moodA2 | 名 | 気分the way you feel at a time |
| accidentsA2 | 名 | 事故bad things that happen by chance |
| likelyA2 | 形 | 起こりそうなprobably going to happen |
単語のレベル:CEFR-J(『CEFR-J Wordlist Version 1.6』 東京外国語大学投野由紀夫研究室. (URL: https://www.cefr-j.org/download.html より 2026年8月ダウンロード))
1. Reading Quiz 本文の内容に合うものを選ぼう
What happens to clocks in summer time?
A. They stop.B. They move one hour back.C. They move one hour ahead.D. They move two hours ahead.
How many states did the team study?
A. 14B. 19C. 40D. 50
What does the body clock control?
A. School start timesB. Clocks on the wallC. The weatherD. Sleep, mood, and hunger
When were deadly accidents with students on foot more likely?
A. In daylightB. Before sunriseC. At lunchtimeD. On weekends
2. True or False 正しければ T、違っていれば F
( ) The team is from the University of Washington.
( ) In Georgia, there would be about 71 million more trips to school before sunrise.
( ) Teenagers' body clocks are set earlier than adults'.
( ) The team says there would be about 2 million more dark trips across the country.
3. Fill in the Blanks 下の語から選んで空らんをうめよう(形を変えずに)
billionstudiedsunriseaccidentsmoodahead
The team also looked at road _____.
In summer time, clocks move one hour _____.
Across the country, the team says there would be at least 2 _____ more.
In Georgia alone, there would be about 71 million more trips to school before _____.
This clock helps control sleep, _____, and hunger.
A team from the University of Washington _____ schools in 14 states.
4. Word Order 語を並べかえて正しい文にしよう
( clock / our / set / helps / light / body / Morning ) .
( The / also / road / looked / accidents / at / team ) .
( they / looked / They / are / when / and / at / schools / where / start ) .
5. Think and Write 英語で答えてみよう
Do you feel sleepy on dark winter mornings? What do you do to wake up?(冬の暗い朝はねむいと感じますか?目を覚ますために何をしていますか?)
What time do you think school should start? Why?(学校は何時に始まるのがいいと思いますか?それはなぜですか?)

Answers 解答
1. (1) C (2) A (3) D (4) B
2. (1) T (2) T (3) F (4) F
3. (1) accidents (2) ahead (3) billion (4) sunrise (5) mood (6) studied
4.
- Morning light helps set our body clock.
- The team also looked at road accidents.
- They looked at when schools start and where they are.
全文訳
1アメリカの科学者たちは、一年中サマータイムにすると、学校へ行く朝の多くが暗くなると言っています。サマータイムでは、時計を1時間進めます。すると、時計で見た日の出の時刻がおそくなります。
2ワシントン大学のチームが、14の州の学校を調べました。学校が何時に始まるか、どこにあるかを見ました。ジョージア州だけで、日の出前に学校へ行く回数が約7100万回ふえます。全国では、少なくとも20億回ふえるとチームは言っています。
3朝の光は、体内時計を合わせるのを助けます。この時計は、ねむけや気分、おなかのすき方を決めています。10代の人の体内時計は、小さい子どもや大人より、後ろ(夜型)にずれています。研究者たちは、暗い朝は、生徒に必要な朝の光をうばってしまうと言っています。
4チームは交通事故も調べました。歩いている子どもが亡くなる事故は、日の出前のほうが、明るい時間より約2倍起きやすかったのです。
文法ポイント:倍数の表し方(twice as ~ as)
「twice as +形容詞+ as …」で「…の2倍~」。本文の Deadly accidents ... were about twice as likely before sunrise as in daylight. は「日の出前は、明るい時間の約2倍起きやすかった」。3倍なら three times as ~ as。
出典:University of Washington、Popular Science、ScienceDaily、FOX 13 Seattle、NIST(アメリカ国立標準技術研究所) ほか(記事は原田英語の時事英語ジュニアのオリジナル)|https://www.haradaeigo.com/jijieigo-junior/news/2026-11-05-dark-mornings-school-study/