英検準1級のno sooner…than・hardly…whenの倒置と時制【独自40問・全解説】

英検準1級の長文でNo sooner had … than …／Hardly had … when …を見たら、「どの出来事が先で、どれが直後か」を確認してください。文頭に否定的な副詞を置くと助動詞と主語が倒置されるため、疑問文のように見えても二つの出来事の連続を示す表現です。慶英会の独自40問（和訳12・語法4択12・訂正8・独自4長文8問）と全解答を無料公開します。

英検準1級の公式試験では長文空所補充6問・内容一致7問などが出題されます。日本英語検定協会の出題形式をご確認ください。Cambridge Dictionary｜No soonerとBritish Council｜否定的な副詞による倒置で構文を照合しています。本記事は英検公式過去問ではなく慶英会の独自教材です。

結論｜2種類の構文と時系列

• No sooner had A done than B did：Aの直後にBが起こる。接続はthan。
• Hardly／Scarcely had A done when B did：Aの直後にBが起こる。接続はwhen。
• 文頭の場合：No sooner had the event started … のようにhad＋主語＋過去分詞へ倒置。
• 文中の場合：They had no sooner arrived than … のように通常語順。
• As soon as：As soon as the event started, … のように通常語順。時制・文体に応じて自然に使える。
• 重要な意味：直後に起きたという時間的な関係だけで、一方が他方の原因だとは断定しない。

演習A｜二つの出来事の順番と日本語訳12問

A1. No sooner had the train departed than the station received a warning.

A2. Hardly had the council approved the trial when new questions arose.

A3. Scarcely had the exhibition opened when a technical problem occurred.

A4. The staff had no sooner finished checking the forms than another request arrived.

A5. Hardly had the volunteers reached the park when it began to rain.

A6. As soon as the library reopened, visitors began asking about the new rules.

A7. No sooner had the new website gone live than users reported errors.

A8. Scarcely had the director begun to speak when the microphone failed.

A9. The organizers had hardly announced the schedule when a venue became unavailable.

A10. No sooner had the engineers collected the samples than the weather changed.

A11. The committee had scarcely received the report when it requested corrections.

A12. Hardly had the town started the pilot when residents raised concerns.

演習B｜倒置とthan／whenを選ぶ4択12問

B1. No sooner ___ the library reopened than visitors began to arrive.

1. has
2. had
3. did
4. would

B2. Hardly had the engineers arrived ___ the weather changed.

1. when
2. than
3. then
4. because

B3. No sooner had the council published the draft ___ criticism began.

1. when
2. while
3. unless
4. than

B4. Scarcely ___ the group started the review when another request arrived.

1. were
2. has
3. had
4. do

B5. As soon as the announcement ___ published, residents asked questions.

1. were
2. was
3. be
4. has

B6. Hardly had the team completed the survey ___ an inconsistency emerged.

1. when
2. than
3. unless
4. so that

B7. No sooner ___ the samples been collected than an equipment fault was found.

1. did
2. were
3. have
4. had

B8. The editor had no sooner corrected the headline ___ another error appeared.

1. when
2. while
3. than
4. if

B9. Scarcely had the meeting begun ___ two members raised objections.

1. than
2. when
3. because
4. so

B10. No sooner had the bus arrived than passengers ___ to board.

1. began
2. begin
3. had begun
4. beginning

B11. The scientist had hardly finished the presentation ___ more questions were raised.

1. than
2. unless
3. because
4. when

B12. As soon as the committee ___ its vote, the chair announced the result.

1. finishing
2. finish
3. finished
4. was finish

演習C｜語順・時制・接続語の誤り訂正8問

C1. No sooner the lecture had started than the alarm rang.

C2. Hardly had the workers arrived than it started to rain.

C3. Scarcely had the event opened then visitors began asking questions.

C4. No sooner did the researchers finished the experiment than an error was found.

C5. No sooner had the train departed when the timetable changed.

C6. Hardly she had reviewed the report when a correction arrived.

C7. As soon as had the bell rung, the students left.

C8. No sooner had the board approved the project than the team begins preparing.

演習D｜独自4長文・内容一致8問

長文1｜公開展示の準備

In a fictional town museum, no sooner had the exhibition opened than visitors reported that some labels were difficult to read. The staff revised the labels and planned another inspection. However, the director explained that receiving complaints immediately did not prove that the entire exhibition was poorly designed. The museum wanted feedback from people with different viewing needs before making permanent changes.

D1. Which event happened first?

1. Visitors submitted their later feedback.
2. The exhibition opened.
3. All labels were permanently replaced.
4. The museum closed.

D2. What conclusion did the director reject?

1. Some visitors had difficulty reading labels.
2. The staff revised certain labels.
3. Immediate complaints proved the entire exhibition was badly designed.
4. Further feedback might be useful.

長文2｜停電の直後に何が起きたか

Hardly had a community center started an evening workshop when a brief power failure interrupted the projector. Staff checked the electrical equipment and resumed the session after the lights returned. Several attendees said the interruption was inconvenient, but engineers warned that the timing alone could not establish that the projector had caused the power failure. They proposed reviewing maintenance records before drawing conclusions.

D3. What happened immediately after the workshop began?

1. A brief power failure interrupted the projector.
2. A permanent closure was announced.
3. The projector was replaced nationwide.
4. Every attendee left before the workshop.

D4. Why did engineers want maintenance records?

1. The center had no electricity.
2. The lights had never returned.
3. All equipment was already proven safe.
4. Timing alone was insufficient to prove causation.

長文3｜大学の調査結果

A fictional university had scarcely published a preliminary survey when another group requested access to the methods. Researchers provided information about the sample and acknowledged that results might change as further responses were collected. The sudden request did not mean the findings had been rejected; it showed that other researchers wanted to examine the evidence. The team planned an updated report after additional analysis.

D5. Which event took place immediately after publication?

1. The university permanently withdrew the report.
2. All participants were excluded.
3. Another group asked to examine the methods.
4. The sample was proven representative.

D6. What did the request signify?

1. The findings had been officially disproved.
2. Other researchers wanted to examine evidence.
3. The university had abandoned research.
4. Every survey response had changed.

長文4｜道路計画の予定外の連絡

No sooner had the council announced a revised road schedule than several business owners asked how deliveries would be affected. Officials invited the owners to a meeting and described a temporary loading area. The council said that the questions were reasonable, but they did not automatically demonstrate that the new timetable was unsafe. Further checks would be conducted before a permanent decision.

D7. What followed the council’s announcement?

1. Questions from business owners about deliveries.
2. The immediate completion of all roadwork.
3. The cancellation of every delivery.
4. The permanent closure of the road.

D8. What was the council’s position on those questions?

1. They were illegal.
2. They proved every route unsafe.
3. They required no response.
4. They were reasonable but did not prove the timetable unsafe.

全40問の正解・日本語訳・詳しい解説

A｜和訳12問と時間順序

A1 模範訳：列車が出発するやいなや、駅は警告を受け取った。 解説：最初＝列車出発、直後＝警告受信。順番は分かるが原因まで断定しない。

A2 模範訳：議会が試行を承認するやいなや、新たな疑問が浮かんだ。 解説：hardly … when。疑問が承認の直後に生じた。

A3 模範訳：展示会が開幕するやいなや、技術的問題が起きた。 解説：scarcely … whenはほぼ直後の連続を表す。

A4 模範訳：職員が用紙の確認を終えるやいなや、別の依頼が届いた。 解説：No soonerを文頭に置かず、had no sooner finishedの通常の語順。

A5 模範訳：ボランティアが公園に着くやいなや、雨が降り始めた。 解説：到着が先、降雨がその直後。

A6 模範訳：図書館が再開するとすぐに来訪者は新規則について質問し始めた。 解説：as soon asは通常語順で即時の後続を表す。

A7 模範訳：新ウェブサイトが公開されるやいなや利用者は誤りを報告した。 解説：went liveの完了が先。エラーの発生原因はこの文だけで確定しない。

A8 模範訳：部長が話し始めるやいなや、マイクが故障した。 解説：had begun→failed。主節に倒置。

A9 模範訳：主催者が日程を発表するやいなや、会場が使えなくなった。 解説：文中had hardly announcedには倒置しない。

A10 模範訳：技術者が標本を集めるやいなや天候が変わった。 解説：標本収集が先。the weather changedは後続。

A11 模範訳：委員会は報告書を受け取るやいなや訂正を求めた。 解説：通常語順のhad scarcely received。

A12 模範訳：町が試行を始めるやいなや住民から懸念が出た。 解説：開始→懸念。後続の懸念が必ず実験を中止したとは限らない。

B｜4択12問

B1 正解B：had。和訳：図書館が再開するやいなや来訪者が到着し始めた。 理由：No sooner had＋主語＋過去分詞reopened。

B2 正解A：when。和訳：技術者が到着するとすぐ天気が変わった。 理由：hardly … whenの定型連結。

B3 正解D：than。和訳：議会が草案を発表するとすぐ批判が始まった。 理由：no sooner … thanが標準的な対応。

B4 正解C：had。和訳：集団が審査を始めるやいなや別の依頼が届いた。 理由：Scarcely had＋主語＋過去分詞。

B5 正解B：was。和訳：発表が公表されるとすぐに住民は質問した。 理由：受動の過去形was published。as soon asは通常語順。

B6 正解A：when。和訳：調査を完了した直後に不一致が現れた。 理由：hardly had … when。

B7 正解D：had。和訳：標本が採取された直後に機器の不具合が見つかった。 理由：had＋主語＋been＋過去分詞の受動態を倒置。

B8 正解C：than。和訳：見出しを直した直後に別の誤りが現れた。 理由：文中had no sooner … thanの対応。

B9 正解B：when。和訳：会議が始まるやいなや二人が異議を唱えた。 理由：scarcely … when。

B10 正解A：began。和訳：バス到着の直後に乗客が乗り込み始めた。 理由：than以下は後に続いた過去の出来事began。

B11 正解D：when。和訳：科学者が発表を終えるやいなや追加質問があった。 理由：文中hardly … when。

B12 正解C：finished。和訳：委員会が採決を終えるとすぐ議長が結果を発表した。 理由：as soon as＋過去形finished。倒置はしない。

C｜誤文訂正8問

C1 修正文：No sooner had the lecture started than the alarm rang. 解説：文頭No soonerの後はhad＋主語＋過去分詞の倒置。

C2 修正文：Hardly had the workers arrived when it started to rain. 解説：hardly … whenが標準的な組み合わせ。

C3 修正文：Scarcely had the event opened when visitors began asking questions. 解説：thenでなくwhenを用いる。

C4 修正文：No sooner did the researchers finish the experiment than an error was found. 解説：did＋動詞原形finish。didを用いた倒置も可能。

C5 修正文：No sooner had the train departed than the timetable changed. 解説：no sooner … thanを使う。

C6 修正文：Hardly had she reviewed the report when a correction arrived. 解説：否定的な副詞の文頭配置で倒置する。

C7 修正文：As soon as the bell rang, the students left. 解説：as soon as節は平叙文の通常語順。

C8 修正文：No sooner had the board approved the project than the team began preparing. 解説：一連の過去の出来事として後続節も過去形began。

D｜独自4長文8問の正解と本文根拠

長文1の日本語内容：展示会が始まるとすぐにラベルの見にくさへの苦情が出た。スタッフは修正したが、直後の苦情だけで展示全体の設計が悪いと証明されたわけではない。

D1 正解B：The exhibition opened.。英文根拠：“no sooner had the exhibition opened than visitors reported”。展示の開始が先。

D2 正解C：Immediate complaints proved the entire exhibition was badly designed.。英文根拠：“did not prove that the entire exhibition was poorly designed”。部分的な問題の一般化を避ける。

長文2の日本語内容：地域センターが夜間講座を始めた直後に停電で投影機が止まった。復旧後に再開したが、時間的に続いたというだけで投影機が停電の原因だったとは証明できない。

D3 正解A：A brief power failure interrupted the projector.。英文根拠：“Hardly had … started … when a brief power failure”。開始の直後に停電。

D4 正解D：Timing alone was insufficient to prove causation.。英文根拠：“timing alone could not establish … caused”。時間順序と因果を区別。

長文3の日本語内容：大学が暫定調査を公表するとすぐ別グループが方法の閲覧を求めた。要求は結果の全面否定ではなく検証のための照会で、研究者は標本と追加分析の必要性を説明した。

D5 正解C：Another group asked to examine the methods.。英文根拠：“scarcely published … when another group requested”。公表直後の方法への照会。

D6 正解B：Other researchers wanted to examine evidence.。英文根拠：“did not mean the findings had been rejected”。照会と否定の確定は別。

長文4の日本語内容：議会が新しい道路の予定を公表するとすぐ事業者が配送への影響を質問した。議会は臨時荷降ろし場所を説明したが、質問の発生だけで時刻表が危険だという証明にはならない。

D7 正解A：Questions from business owners about deliveries.。英文根拠：“No sooner … announced … than … asked”。公表の直後の質問。

D8 正解D：They were reasonable but did not prove the timetable unsafe.。英文根拠：“did not automatically demonstrate … unsafe”。懸念の存在と危険の確定は別。

応用｜No soonerとOnly afterは何が違うか

No sooner had the team arrived than it started to rain. は到着の直後に雨が降ったことを強調します。一方、Only after the team arrived did it start to rain. は到着後という時間的な条件を強調します。意味が近い場面でも強調点は異なります。どちらの構文からも「到着したから雨が降った」という因果関係は導けません。

7日間の復習プラン

1. 初日：A12文の出来事1・2を色分けする
2. 2日目：B12問でhadとthan／whenを使い分ける
3. 3日目：C8問の倒置・接続詞・時制を訂正する
4. 4日目：D4長文8問の根拠を説明する
5. 5日目：as soon asとno soonerを使った書換を5組行う
6. 6日目：no soonerとhardlyの自作文を各4文作る
7. 7日目：英検公式過去問で時間順序と因果の違いを確認する

よくある質問

no soonerには必ずthanを使いますか？

この「二つの出来事が直後に連続する」構文では、標準的にはno sooner … thanを使います。hardly／scarcely／barelyはwhenと組み合わせます。

no soonerの後は必ず過去完了ですか？

過去完了が一般的ですが、No sooner did … than …の形や、別の時制・形も文脈によって使えます。この教材では頻出の過去完了を中心に練習しています。

as soon asにも倒置が必要ですか？

いいえ。通常はAs soon as the train arrived, …のように主語＋動詞の語順です。

直後に起きた二つの出来事は必ず因果関係がありますか？

いいえ。時間が連続したというだけで一方が他方の原因だとは限りません。英検準1級の長文要約でもこの区別を保持しましょう。

この40問でCSEを予測できますか？

できません。慶英会の独自文法・読解問題で、公式試験の採点方式とは異なります。

関連教材と慶英会の無料体験

Not until・Only afterの倒置40問／過去完了・時制の一致24問／if necessary・when askedの省略節40問。

慶英会では中高一貫校の学校英語と英検準1級の複雑な英文をつなぎ、構文を根拠に長文読解・要約へ応用する個別指導を行っています。最大1か月完全無料体験・学習相談はこちら。

参考にした公式・文法情報

英検協会｜準1級試験内容／Cambridge Dictionary｜No sooner／British Council｜Inversion。2026年10月28日確認。全40問は慶英会の独自制作です。