英検準2級プラス長文の言い換え対策｜同義語・上位語・数量・条件の独自36問【全解説】

慶英会 塾長｜慶應義塾大学卒・英検1級
中高一貫校の学校英語・NEW TREASURE・英検対策を専門とするオンライン個別指導塾です。塾長紹介

最大1か月完全無料体験・学習相談｜料金・無料体験の条件

英検準2級プラスの長文で「本文は読めたのに、4択の正しい言い換えを選べない」と悩む中高一貫校生へ。正解は本文と同じ単語が並んだ選択肢とは限りません。語句の言い換え・具体例のまとめ・理由と結果・数量・可能性・時刻の意味が一致しているか確かめる必要があります。この記事は慶英会オリジナルの短文24題＋初見長文4本12題＝全36問で練習できます。全問題に解答・和訳・根拠解説を掲載しています。

英検協会の準2級プラス公式試験内容では、Readingの長文内容一致は8問で、Eメールと説明文の内容に関する質問に答えます。英文要約も別に1題あります。このページの「言い換え4択」は慶英会が作成した読解技術の分解練習であり、公式の独立大問・出題形式そのものではありません。

結論｜選択肢を選ぶ前に『意味・範囲・条件・関係』を照合する

• 単語の言い換え：postpone≒move to a later dateのように内容を保つ。
• 具体から抽象：carrots and broccoli→vegetablesのように上位概念へまとめる。
• 確実性：may、might、consideringをdefinitelyやalready decidedに変えない。
• 因果と条件：becauseとas a result、unlessとif notの関係を正しく読む。
• 数量：some、most、all、at least、fewerを互いに置き換えない。
• 時間：before、by、until、not … untilの前後関係を守る。

一部だけ正しい選択肢を選びやすい場合は、意味だけでなく誰について、いつ、何人、どの条件のときに成立するかまで確かめます。正しい言い換えは文の意味を保ち、不必要に広くしたり、断定を強めたりしません。

第1部｜同義語・上位語・範囲・条件の独自24問

各題には慶英会制作の英文と4つの選択肢があります。元の英文と同じ意味を表している選択肢を選び、答えを開く前に他の選択肢がなぜ違うかを説明してください。

同じ意味の表現｜4題

問題1　原文：The lecture was postponed until Tuesday.

• A. The lecture was canceled completely.
• B. The lecture was moved to Tuesday.
• C. The lecture finished on Tuesday.
• D. The lecture started earlier than planned.

問題2　原文：The students took part in a local clean-up event.

• A. They organized an event but did not join it.
• B. They watched the event from home.
• C. They decided not to attend the event.
• D. The students participated in the event.

問題3　原文：The entrance fee is affordable for most families.

• A. The fee is not too expensive for the majority of families.
• B. Every family can enter without paying.
• C. Only a few families can afford the fee.
• D. The fee has recently doubled.

問題4　原文：Paper tickets are no longer required.

• A. Paper tickets will become compulsory soon.
• B. Paper tickets have never been accepted.
• C. People do not need paper tickets anymore.
• D. Everyone must buy two paper tickets.

上位語・具体例のまとめ方｜4題

問題5　原文：The map shows two train lines and three bus routes.

• A. The map shows only bicycle paths.
• B. The map shows exactly five subway stations.
• C. The map shows several public transportation routes.
• D. The map provides train tickets for visitors.

問題6　原文：The lunch includes carrots, broccoli, and spinach.

• A. The meal contains several kinds of vegetables.
• B. The lunch consists only of fruit.
• C. The lunch has three types of seafood.
• D. The meal contains no fresh ingredients.

問題7　原文：The class teaches people how to repair tables and chairs.

• A. The class teaches people to build computers.
• B. The class only repairs bicycles.
• C. The class sells tables and chairs.
• D. The class teaches people how to fix furniture.

問題8　原文：The museum displays old telephones and radios.

• A. The museum has only ancient cooking tools.
• B. The museum shows historical communication devices.
• C. It displays modern sports equipment.
• D. Visitors can buy the latest mobile phones there.

可能性・確実性を守る｜4題

問題9　原文：The plan may reduce electricity use.

• A. The plan has definitely eliminated electricity costs.
• B. The plan did not change electricity use.
• C. It is impossible for the plan to reduce use.
• D. It is possible that the plan will lower electricity use.

問題10　原文：The town is considering opening a new library.

• A. The new library opened last month.
• B. The town has not decided yet whether to open the library.
• C. The town has decided to close every library.
• D. The project has already been completed.

問題11　原文：Several students chose to join the project.

• A. Every student in the school joined.
• B. No students took part.
• C. Some students joined the project, but not necessarily all.
• D. Most students refused to join.

問題12　原文：The service is not always cheaper than buying new equipment.

• A. In some cases the service may cost as much as or more than buying new equipment.
• B. The service is cheaper in every case.
• C. The service is free for every customer.
• D. New equipment is never sold.

理由・目的・条件の関係｜4題

問題13　原文：The event was moved indoors because of heavy rain.

• A. Heavy rain caused the organizers to move the event inside.
• B. The event caused the rain.
• C. Organizers moved outside because the room was full.
• D. The event remained outdoors despite the rain.

問題14　原文：The library opened study rooms to help students work in quiet places.

• A. Students were banned from studying in the rooms.
• B. The rooms were opened to store unused books.
• C. Providing quiet places to study was a purpose of opening the rooms.
• D. The rooms closed because of student complaints.

問題15　原文：The seats were full. As a result, visitors had to wait outside.

• A. Visitors waited outside to make the seats full.
• B. Because there were no available seats, visitors waited outside.
• C. The seats became empty after visitors entered.
• D. Nobody needed to wait outside.

問題16　原文：Unless you register by Friday, you cannot join.

• A. Everyone may attend without registration.
• B. Only people who register on Saturday may attend.
• C. Registration is forbidden before Friday.
• D. You cannot participate if you do not register by Friday.

数量・比較を変えない｜4題

問題17　原文：Attendance rose from fifty to one hundred.

• A. Attendance decreased by fifty.
• B. Only fifty participants attended in the end.
• C. The number of participants doubled.
• D. The number of participants stayed unchanged.

問題18　原文：The library lent ten fewer books than last year.

• A. The library lent ten more books.
• B. The number of books lent doubled.
• C. No books were borrowed this year.
• D. The number of books lent fell by ten compared with the previous year.

問題19　原文：At least twenty students attended the workshop.

• A. Twenty or more students joined the workshop.
• B. Fewer than twenty students attended.
• C. Exactly twenty students attended, with no possibility of more.
• D. The workshop was limited to ten students.

問題20　原文：Only one of the three rooms has a projector.

• A. All three rooms have projectors.
• B. Two of the three rooms do not have projectors.
• C. None of the rooms has a projector.
• D. Exactly two rooms have projectors.

時刻・順序を守る｜4題

問題21　原文：Please submit your report by Thursday.

• A. The report should be submitted after Friday.
• B. The report must be handed in no later than Thursday.
• C. The report cannot be handed in on Thursday.
• D. Students may submit it any time next month.

問題22　原文：The concert did not begin until the rain stopped.

• A. The concert started only after the rain had stopped.
• B. The concert began while it was still raining.
• C. The rain began only after the concert ended.
• D. The concert had finished before the rain stopped.

問題23　原文：She had never visited the museum before last week.

• A. She visits the museum every week.
• B. She had visited the museum several times before last week.
• C. She still has never been to the museum.
• D. Last week was the first time she visited the museum.

問題24　原文：The train left before five o’clock.

• A. The train left exactly at five.
• B. The train arrived after five.
• C. The train departed earlier than five o’clock.
• D. The train left no earlier than five.

第2部｜初見長文4本・内容一致12問

短文で覚えた言い換えを、まとまったEメール・説明文の中で使います。初回は本文と設問だけを読み、正解を選んだ後に原文の根拠と和訳を開いてください。1つの長文につき3問は分析用の独自演習であり、公式の問題数を再現したものではありません。

長文1｜移動式図書館と停車場所

A town introduced a small mobile library for people who lived far from the main library. At first, the bus stopped beside a sports center on the last Saturday of each month. The town expected many families to use it, but only a few residents came during the first two months. After talking with local people, staff learned that the stop was difficult to reach by public transportation. The bus was then moved to a square near the train station. Visitor numbers rose, although staff said it was too early to know whether the new location was the only reason. The town plans to keep collecting information before deciding on a permanent stop.

問25｜本文の意味を保つ選択肢を選ぶ

Why did staff move the bus stop?

• A. The original place was difficult to reach without a car.
• B. The main library had closed permanently.
• C. There were not enough books on the bus.
• D. Families asked for longer reading sessions.

問26｜本文の意味を保つ選択肢を選ぶ

What happened after the stop was moved?

• A. Every resident visited the library.
• B. More people used the mobile library.
• C. The bus stopped running on Saturdays.
• D. All the books were sold.

問27｜本文の意味を保つ選択肢を選ぶ

Why will the town continue collecting information?

• A. It plans to buy a much larger bus.
• B. The library books have been damaged.
• C. The new stop’s effect is not yet certain.
• D. The station will close next week.

長文2｜学校の工作室と安全確認

Students at Bay School wanted to use a workshop room to create models for a science exhibition. The room had useful tools, but some were difficult for beginners to handle. Teachers decided that students could use basic equipment after attending a short safety lesson. More complex machines would still require an adult supervisor. At first, a few students complained that these rules slowed down their projects. However, after a student damaged a piece of equipment by using it incorrectly, the class agreed that the safety checks were necessary. The school later created a simple online reservation system so students could plan their work and avoid waiting for tools.

問28｜本文の意味を保つ選択肢を選ぶ

What must students do before using basic tools?

• A. Complete a short safety lesson.
• B. Buy the tools themselves.
• C. Work without any instructions.
• D. Get permission from a museum.

問29｜本文の意味を保つ選択肢を選ぶ

Why did the students change their opinion about the rules?

• A. They were given free tools.
• B. Equipment was damaged because of incorrect use.
• C. The workshop was moved to a new town.
• D. The science exhibition was canceled.

問30｜本文の意味を保つ選択肢を選ぶ

What was the purpose of the online reservation system?

• A. To stop all science projects.
• B. To sell new machines.
• C. To help students avoid waiting for tools.
• D. To replace every teacher.

長文3｜雨で変わった夜市の計画

A group of local shops organized a small night market to introduce products made in their town. The event was originally planned for an open square on Friday evening. On Wednesday, the forecast showed a high chance of heavy rain. Some shop owners suggested canceling the market, but the organizers found an empty hall nearby and moved the event there instead. Because the hall was smaller, each shop could display fewer items than planned. Visitors still came, and several shop owners said they had opportunities to speak with new customers. The organizers have not decided whether to use the hall again, since they want to compare the costs first.

問31｜本文の意味を保つ選択肢を選ぶ

What did the organizers do because of the rain forecast?

• A. They moved the market indoors.
• B. They moved it to the next month.
• C. They asked all shops to close permanently.
• D. They held it outside as planned.

問32｜本文の意味を保つ選択肢を選ぶ

What limitation did the new location create?

• A. All shops had to raise prices.
• B. Shops could show fewer products.
• C. Visitors were not allowed to enter.
• D. The market could not open on Friday.

問33｜本文の意味を保つ選択肢を選ぶ

What have the organizers NOT decided?

• A. Whether the event was held this Friday.
• B. Whether they would speak with customers.
• C. Whether to use the hall again.
• D. Whether rain was forecast on Wednesday.

長文4｜理科部のオンライン観察記録

Members of a school science club created a website where students could report the insects they saw in nearby parks. They hoped to learn when different kinds of insects appeared during the year. In the first month, many reports came from the same park, while very few were sent from other areas. The students realized that the information could give a misleading picture of the whole town. They therefore asked club members to visit different parks at similar times and record the weather. The club does not claim that the new system has solved every problem, but it now has a clearer method for comparing observations.

問34｜本文の意味を保つ選択肢を選ぶ

Why did the club create the website?

• A. To study when different insects appear.
• B. To sell equipment to local parks.
• C. To replace the school’s science teachers.
• D. To advertise a new shopping center.

問35｜本文の意味を保つ選択肢を選ぶ

What was a problem with the first month’s reports?

• A. There were too many kinds of computers.
• B. Reports came mostly from one park.
• C. Nobody recorded any insects.
• D. The website had been closed by the town.

問36｜本文の意味を保つ選択肢を選ぶ

What does the club say about the new method?

• A. It has completely removed every source of error.
• B. It is already used by every school.
• C. It makes comparisons clearer but is not a perfect solution.
• D. It has proved that the weather has no effect.

全36問の解答一覧・復習方法

正解一覧：1 B／2 D／3 A／4 C／5 C／6 A／7 D／8 B／9 D／10 B／11 C／12 A／13 A／14 C／15 B／16 D／17 C／18 D／19 A／20 B／21 B／22 A／23 D／24 C／25 A／26 B／27 C／28 A／29 B／30 C／31 A／32 B／33 C／34 A／35 B／36 C

• 原因1：語彙：知らない動詞・熟語の例文を自分で作り、言い換えも覚える。
• 原因2：数量：some / most / all、at least / exactly、fewer / lessに印を付ける。
• 原因3：因果：becauseの後に原因が来るのか、as a resultの後に結果が来るのか、矢印でつなぐ。
• 原因4：確実性：mayとwill、consideringとdecidedの断定の強さを比較する。
• 原因5：時間：before・after・until・byを時系列に配置して説明する。

練習は、①全36問を解く、②本文の根拠を指す、③誤答の原因を書き出す、④3日後に別の問題でも意味を保てるか確認する、の順で進めます。この独自教材の正答数を英検CSEスコアや合格可能性へ換算することはできません。

よくある質問

本文と同じ英単語が入っていれば正解ですか？

いいえ。語句が一致していても、数量や理由・時刻が違うことがあります。設問が尋ねる情報に直接答え、本文と条件まで一致するか確認してください。

長文内容一致ではすべての文を和訳する必要がありますか？

学習初期は全文和訳が有益な場合もありますが、本番で毎文を日本語へ置き換える必要はありません。主節・指示語・因果・必要な根拠を押さえて答える練習を優先します。

この36問は実際の英検公式過去問ですか？

いいえ。独自の文意判定24問と独自長文4本12問です。公式問題・解答・採点基準を転載または再現したものではありません。

言い換え練習は英文要約にも役立ちますか？

役立ちます。意味を保った別表現を作る発想は共通ですが、英文要約は25〜35語に中心情報をまとめる課題なので、論理を削りすぎないことも重要です。

英検公式情報・慶英会の関連教材

• 日本英語検定協会・準2級プラス公式試験内容
• 日本英語検定協会・準2級プラス過去問・音源
• 慶英会・長文内容一致で誤答を見抜く独自6長文12題
• 慶英会・英文要約の言い換え16題と独自長文4題
• 慶英会・総合演習第2セット（Reading31問＋Writing2題）

試験形式は2026年10月28日に日本英語検定協会の公開情報で確認しました。例文・設問・選択肢・和訳・解説は慶英会オリジナルです。英検協会が出題頻度を保証する言い換え一覧ではありません。

長文読解・要約と学校英語を一緒に改善したい方へ

慶英会では、慶應義塾大学卒・英検1級の塾長の指導方針に基づき、中高一貫校の学校英語と英検準2級プラス対策を個別に支援しています。英単語は覚えたのに本文と選択肢の対応が取れない、英文要約で意味を変えてしまう場合は、本文の根拠から復習します。最大1か月完全無料体験・学習相談はこちら。

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慶英会 塾長｜慶應義塾大学卒・英検1級。中高一貫校の学校英語・NEW TREASURE・英検対策を専門としています。塾長の経歴・指導方針を確認する