Day 068 — Review: Writing Task 2 Vocabulary & Collocations（弱点補強）

2026-06-21 Phase 2 — Band 6.0 目標 Review（日曜 弱点補強） 20問 | 15分

背景知識

Review Day — 日曜

今日は Review（弱点補強） です。昨日の Writing Task 2（AI Discussion Essay）を踏まえ、語彙・コロケーション・Academic Register を集中的に強化します。

なぜコロケーションが重要か？
IELTS の Lexical Resource（LR）採点基準では、単語を「知っているか」ではなく 「自然に使えるか」 が評価されます。
"make rules" → establish regulations、"very important" → plays a pivotal role のような変換が、Band 6.0 → 7.0 の鍵です。

Band 6.0 → 7.0 への具体的変化

Band 6.0 の文（カジュアル）Band 7.0〜の文（Academic）
AI is very useful. AI offers transformative potential for society.
Many jobs will be lost. AI may displace workers in routine sectors.
It is important to control AI. Robust regulatory frameworks are essential.
AI can cause problems. AI poses significant ethical challenges.
We should use AI carefully. AI must be harnessed responsibly for public good.

Part 1: コロケーション選択問題（10問）

⏰ 目安 7分

下線部に入る最も自然な語を A / B / C から選んでください。

Q1 The rapid       of artificial intelligence has raised important ethical questions.
  • A) expansion
  • B) grow
  • C) widen
Q2 Without adequate      , AI systems may reinforce existing social inequalities.
  • A) manage
  • B) oversight
  • C) look
Q3 Investment in       programmes is essential to help workers adapt to automation.
  • A) retraining
  • B) repeat
  • C) reform
Q4 AI has the potential to       the way healthcare professionals diagnose disease.
  • A) revolution
  • B) revolutionise
  • C) revolve
Q5 Governments must       clear regulations before deploying AI in public services.
  • A) establish
  • B) make up
  • C) do
Q6       bias in AI hiring tools has been widely documented in recent years.
  • A) Computer
  • B) Algorithmic
  • C) Digital
Q7 Routine tasks in manufacturing are increasingly being       automated systems.
  • A) displaced by
  • B) displaced with
  • C) replaced at
Q8 AI-powered diagnostic tools can detect early-stage cancer with remarkable      .
  • A) exactness
  • B) precision
  • C) correctness
Q9 The       of AI into everyday life has accelerated significantly since 2020.
  • A) integration
  • B) combination
  • C) mix
Q10 Critics argue that AI could       social inequality if left unregulated.
  • A) make worse
  • B) exacerbate
  • C) increase up

Part 2: Academic Register — 書き換え問題（5問）

⏰ 目安 5分
例:
カジュアル: AI can help doctors find diseases faster.
Academic: AI-powered diagnostic tools enable clinicians to identify conditions with greater speed and accuracy.
Q11 カジュアル: "A lot of jobs will be taken by robots in the future."
Academic: ___________________________________________
Q12 カジュアル: "People are worried that AI is dangerous."
Academic: ___________________________________________
Q13 カジュアル: "The government should make rules for AI."
Academic: ___________________________________________
Q14 カジュアル: "AI is very important for the economy."
Academic: ___________________________________________
Q15 カジュアル: "We need to teach people new skills."
Academic: ___________________________________________

Part 3: 穴埋め — Discussion Essay の接続表現（5問）

⏰ 目安 3分
Q16          , AI has demonstrated remarkable potential in the field of medicine.
（ヒント: 「一方では」を意味する語句）
Q17       AI creates new job opportunities, it also displaces many existing roles.
（ヒント: 「〜である一方で」）
Q18 I believe that the benefits of AI outweigh its risks,           that appropriate safeguards are in place.
（ヒント: 「〜という条件で」）
Q19 AI poses a significant risk to employment.          , algorithmic bias remains a pressing concern.
（ヒント: 「さらに」）
Q20          , both the potential and the risks of AI must be acknowledged by policymakers.
（ヒント: 「結論として」）

有用な表現・語彙

語彙・表現日本語使用例
exacerbate悪化させる"automation may exacerbate inequality"
proliferation急増・普及"the proliferation of AI systems"
harness活用する"harness the potential of AI"
displace代替・追い出す"AI displaces low-skill workers"
mitigate軽減する"measures to mitigate job losses"
unprecedented前例のない"unprecedented technological change"
accountability説明責任"algorithmic accountability"
safeguard保護措置/守る"put safeguards in place"
pivotal非常に重要な"plays a pivotal role in..."
contend主張する（学術的）"proponents contend that..."
augment強化・補完する"AI augments human decision-making"
societal社会の（形容詞）"societal implications of AI"
カジュアル語彙Academic 代替語
a lot ofa significant number of / considerable
worried aboutconcerned about / apprehensive about
make rulesestablish / enact / implement regulations
very importantplays a pivotal / crucial / vital role
teach new skillsprovide reskilling / upskilling opportunities
good/badbeneficial / detrimental / advantageous
useutilise / harness / leverage / employ
showdemonstrate / indicate / reveal

ヒント

  • "rapid expansion" — 名詞が必要（grow/widen は動詞）
  • "adequate oversight" — 「監督・監視」の意味で Academic な名詞
  • "retraining programmes" — AI 時代の再教育の定番表現
  • "revolutionise the way..." — 動詞形が必要。"revolution" は名詞
  • "establish regulations" — 「確立する」。"make up/do" は文語レベルが低い
  • "algorithmic bias" — AI バイアスの Academic な形容詞
  • "displaced by" — 受動態の前置詞は "by"（with/at は誤り）
  • "remarkable precision" — 「精度」の Academic 語。exactness より自然
  • "integration into everyday life" — 「統合」の Academic コロケーション
  • "exacerbate inequality" — Academic の必須動詞。"make worse" は不正式
Q11 ポイント: "a lot of" → "a significant proportion of"、"taken by robots" → "displaced by automated systems"
Q12 ポイント: "people are worried" → "there is growing concern among experts and the public"
Q13 ポイント: "make rules" → "enact comprehensive regulatory frameworks"
Q14 ポイント: "very important" → "plays a pivotal role in driving economic growth"
Q15 ポイント: "teach new skills" → "provide reskilling and upskilling programmes"
意味接続語
一方ではOn the one hand, / From one perspective,
〜である一方でWhile / Although / Whereas
条件つきprovided that / on the condition that / as long as
さらにFurthermore, / Moreover, / In addition,
結論としてIn conclusion, / To conclude, / In summary,

解答・解説（Band 7.5〜8.0相当）

問解答解説
Q1A) expansion"rapid expansion" が自然なコロケーション。grow/widen は自動詞で不可
Q2B) oversight"adequate oversight（適切な監視・監督）" が学術的な名詞
Q3A) retraining"retraining programmes" = 再訓練プログラム。IELTS 頻出表現
Q4B) revolutionise動詞形が必要。"revolutionise the way..." が定型フレーズ
Q5A) establish"establish regulations" が正式な英語。"make up" は口語的
Q6B) AlgorithmicAI バイアスの文脈では "algorithmic bias" が決まり文句
Q7A) displaced by"be displaced by" が正しい受動態コロケーション（前置詞は by）
Q8B) precision"remarkable precision（驚くべき精度）" が自然。exactness は稀語
Q9A) integration"integration into everyday life" が正しいコロケーション
Q10B) exacerbate"exacerbate inequality" が Academic な表現。A・C は低スコア語彙
MODEL ANSWERS — Band 7.5–8.0

Q11 A significant proportion of routine jobs in manufacturing and logistics are projected to be displaced by automated systems in the coming decades.

Q12 There is growing concern among experts and the public alike that AI poses serious ethical and societal risks.

Q13 Governments must enact comprehensive regulatory frameworks to govern the development and deployment of AI technologies.

Q14 Artificial intelligence plays a pivotal role in driving economic growth and fostering innovation across multiple sectors.

Q15 Substantial investment in reskilling and upskilling programmes is urgently needed to prepare the workforce for an AI-driven economy.

問解答（例）解説
Q16On the one hand,"一方では" の標準的表現。Discussion Essay 必須
Q17While"〜である一方で" の従属接続詞。Whereas も可
Q18provided that"条件つき" の Academic 表現。as long as も可
Q19Furthermore, / Moreover,"さらに" の Academic な追加表現
Q20In conclusion,"結論として" の標準的な締めフレーズ

コロケーション（Part 1）の正答率が Lexical Resource（LR）スコアに直結します。"establish regulations"、"exacerbate inequality"、"algorithmic bias"、"retraining programmes" のような フレーズ単位 での暗記が最も効率的です。

Academic Register（Part 2）では、口語語彙（very, a lot of, worried, make rules）をゼロにすることが優先課題です。エッセイ執筆中に「この単語、カジュアルすぎないか？」と自問する習慣をつけましょう。

接続表現（Part 3）の多様化は Coherence & Cohesion（CC）スコアを改善します。"However" と "Also" だけに頼らず、"Furthermore" "Provided that" "On the one hand" を使い分けることで CC が 6.0 → 7.0 に上がります。

よくある日本人のミス

ミス原因正しい対応
"make rules" 直訳思考（ルールを作る） "establish / enact regulations"
"very important" 強調語の選択ミス "plays a pivotal / crucial role"
"a lot of" 口語表現の混入 "a significant number of / considerable"
"worried about" 日常語の流用 "concerned about / apprehensive about"
"Also, ..." 多用 接続表現の貧困 "Furthermore, / Moreover, / In addition,"
"It is very clear that" 主観的・曖昧な強調 "It is evident / apparent that"
"replaced with automated" 前置詞の混同 "displaced by automated systems"（by が必要）

自己評価

正解数

0
/ 20問 （解答後に記入）

所要時間

分（目標: 15分以内）

理解度

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