背景知識
今日は Writing Task 2 — Discussion Essay（両論型エッセイ） の練習です。問いに対して「賛成側・反対側の両方の意見を公平に論じ、最後に自分の立場を明示する」形式です。
| 段落 | 内容 | 語数目安 |
|---|---|---|
| Introduction | 背景説明 → 両面あることを示す → 自分の立場を明示 | 40〜60語 |
| Body 1 | 一方の意見（肯定側）+ 理由 + 具体例 | 70〜90語 |
| Body 2 | 他方の意見（否定側）+ 理由 + 具体例 | 70〜90語 |
| Conclusion | 両面の要約 + 自分の立場の再確認 | 30〜50語 |
ソフトウェアエンジニアとして実感しやすいテーマです。医療・雇用・倫理など複数の切り口から論じることで、語彙の幅を広げる絶好の機会です。
採点基準 — Writing Task 2 Band Descriptor
| Band | TR（課題への対応） | CC（論理・構成） | LR（語彙） | GRA（文法） |
|---|---|---|---|---|
| Band 9.0 | 問いに完全に対応。両面を深く論じ、立場が明確 | 流れが完璧。接続が自然で段落間も一貫 | 高度な語彙を自由に使用。誤りが皆無 | 多様な構文を正確に使用 |
| Band 8.0 | 両面を十分に論じ、自分の意見が明確 | 論理が整然。ごく稀に接続がぎこちない | 幅広い語彙。ごく稀に不正確 | 複雑な構文。ごく稀に小さな誤り |
| Band 7.0 | 両面に言及するが片方の論拠が弱い場合がある | 概ね論理的。接続表現があるが繰り返しも | 語彙は十分だがコロケーションが時々不自然 | 多様な構文を試みるが誤りがある |
| Band 6.0 ★目標 | 問いに答えているが論証が不十分 | 段落構成はあるが論理の流れが弱い | 基本的語彙中心。繰り返しがある | 単純文が多いが文法は概ね正確 |
| Band 5.0 | 問いの一部しか答えていない | 段落がない、または論理が不明 | 語彙が限定的で誤りが多い | 基本文法に頻繁なエラー |
今日の目標: 両面を均等に論じ、自分の立場を Introduction と Conclusion の両方で明示する
問題
Some people believe that rapid advances in artificial intelligence (AI) will have an overwhelmingly positive impact on society, while others feel that AI poses serious risks to employment and human wellbeing.
✓ 問いのタイプを確認（Discussion = 両面を論じる）
✓ Introduction で自分の立場を明示する
✓ 各 Body 段落に主題文（Topic Sentence）＋根拠＋具体例を含める
✓ 250語以上（目標: 270〜300語）
構成ガイド
| 段落 | 書くべき内容 | 語数 |
|---|---|---|
| Intro | Topic（AIの急速な発展） → Thesis（両面ある） → Position（自分の立場） | ~55語 |
| Body 1 | Topic Sentence（肯定側）→ 理由1（医療など）→ 具体例 → 理由2（危険作業の自動化） | ~80語 |
| Body 2 | Topic Sentence（否定側）→ 理由1（雇用喪失）→ 理由2（倫理・バイアス）→ 根拠 | ~80語 |
| Conclusion | 両面を要約 → Position を再確認（新しい示唆を加える） | ~45語 |
| フレーズ | 用途 | 例 |
|---|---|---|
| On the one hand, ... | 一方の意見（肯定側）の導入 | "On the one hand, AI has shown remarkable potential in healthcare." |
| On the other hand, ... | 他方の意見（否定側）の導入 | "On the other hand, critics contend that AI threatens employment." |
| I would argue that ... | 自分の立場の表明（学術的） | "I would argue that AI represents a net positive force for society." |
| While it is true that ..., ... | 反対意見への譲歩 | "While it is true that AI displaces some jobs, new roles are also created." |
| provided that ... | 条件を示す | "AI is beneficial, provided that adequate safeguards are in place." |
| In tandem with ... | 「～と連携して」 | "Governments and corporations must work in tandem to regulate AI." |
有用な表現・語彙
| 語彙・表現 | 日本語 | 使用例 |
|---|---|---|
| unprecedented | 前例のない | "unprecedented advances in AI technology" |
| displace workers | 労働者を代替する | "AI may displace workers in routine roles" |
| augment | 強化・補完する | "AI augments human decision-making rather than replacing it" |
| algorithmic bias | アルゴリズムのバイアス | "algorithmic bias in hiring systems exacerbates inequality" |
| exacerbate | 悪化させる | "AI could exacerbate social inequality" |
| harness | 活用する | "harness the potential of AI for public good" |
| ethical implications | 倫理的な意義・問題 | "the ethical implications of autonomous AI systems" |
| regulatory framework | 規制の枠組み | "robust regulatory frameworks are needed" |
| reskilling | 再教育、スキル転換 | "investment in reskilling programmes is essential" |
| accountability | 説明責任 | "algorithmic accountability must be enforced" |
"Artificial intelligence is advancing at a pace that many argue is reshaping the foundations of modern society. While proponents contend that AI will drive extraordinary progress, others fear that its rapid expansion threatens jobs and ethical standards. In my view, AI represents a net positive development, though only if robust regulatory frameworks are established."
"Few technological developments in recent decades have provoked as much debate as artificial intelligence. Supporters claim it will revolutionise healthcare and industry, while critics warn of mass unemployment and ethical crises. I believe that, with appropriate governance, the benefits of AI will ultimately outweigh its risks."
"Will artificial intelligence transform society for better or worse? This question has become one of the defining debates of our era. Those who celebrate AI's potential point to its applications in medicine and automation, while sceptics highlight job displacement and algorithmic bias. In my opinion, AI's positive impact can prevail only when matched by responsible policy-making."
ヒント
Discussion Essay では「どちらが正しいか」よりも「両方を公平に論じた上で、自分の立場を明確に述べる」ことが重要です。
- 「条件付き賛成」が高評価: "AI is positive, provided that appropriate regulation is in place." — 単純な賛否より思慮深い印象を与える
- 「どちらとも言えない」は NG: 立場を曖昧にすると TR で減点される
- 両方の Body は均等な長さに: 片方に偏ると「Discuss both views」の要件を満たせない
- 医療AI（癌の早期発見・新薬開発加速）
- 危険作業の自動化（鉱山・原発・宇宙）
- 気候変動対策への活用（エネルギー最適化）
- 雇用喪失（工場労働者・コールセンター・トラック運転手）
- アルゴリズムのバイアスによる差別の拡大（採用・融資・刑事司法）
- プライバシー侵害・監視社会化のリスク
[Intro] AI is transforming society at an unprecedented pace. While proponents argue that it offers enormous benefits, opponents contend that it threatens employment and raises ethical questions. In my view, AI is a net positive force, provided that its development is accompanied by thoughtful regulation.
[Body 1 — Benefits] On the one hand, AI has demonstrated remarkable potential in fields such as medicine... Furthermore, automating dangerous tasks reduces the risk of workplace injury...
[Body 2 — Risks] On the other hand, critics rightly point out that AI poses a significant threat to employment. Routine jobs in manufacturing and logistics are already being automated... In addition, algorithmic bias has exacerbated existing social inequalities...
[Conclusion] In conclusion, while AI carries genuine risks, I believe its transformative potential outweighs these concerns if governments commit to responsible governance...
解答欄（自分のエッセイを書く）
1. Introduction での自分の立場
2. Body 1 に使う論点（肯定側、2つ）
3. Body 2 に使う論点（否定側、2つ）
4. Conclusion での示唆（規制・教育・協力など）
モデル解答（Band 7.5〜8.0相当）
Introduction Artificial intelligence is advancing at a pace that many argue is reshaping the foundations of modern society. While proponents contend that AI will drive extraordinary progress in healthcare, productivity, and human safety, others fear that its rapid expansion threatens jobs and undermines ethical standards. In my view, AI represents a net positive development for humanity, though only if robust regulatory frameworks are established to manage its risks.
Body 1 — Benefits On the one hand, the potential benefits of AI are substantial. In medicine, for example, AI-powered diagnostic systems have demonstrated the ability to detect conditions such as early-stage cancer with a degree of accuracy that surpasses many experienced clinicians. Similarly, AI is being deployed to automate hazardous tasks in industries such as mining and nuclear energy, thereby reducing the risk of human injury. These applications suggest that AI has the capacity to meaningfully improve quality of life on a global scale.
Body 2 — Risks On the other hand, the concerns surrounding AI are by no means trivial. Perhaps the most pressing issue is the displacement of workers. Routine roles in manufacturing, logistics, and customer service are already being automated, and economists warn that without significant investment in reskilling programmes, this trend could exacerbate social inequality. Furthermore, algorithmic bias — the tendency for AI systems to reflect and amplify existing prejudices in their training data — raises profound questions about fairness in hiring, lending, and criminal justice.
Conclusion In conclusion, AI is a dual-edged force: its transformative power is undeniable, yet so are the social risks it introduces. I believe governments and corporations must work in tandem to harness the benefits of AI while enacting legislation to protect workers and ensure algorithmic accountability. With the right governance, the positive impact of AI can far outweigh its drawbacks.
約 280 語
解答の分析（Band Descriptor 4軸）
• 仮定法: "only if robust regulatory frameworks are established"
• 挿入句（ダッシュ）: "— the tendency for AI systems to reflect and amplify existing prejudices in their training data —"
• 関係詞節: "a degree of accuracy that surpasses many experienced clinicians"
• 分詞構文: "thereby reducing the risk of human injury"
よくある日本人のミス
| ミス | 原因 | 正しい対応 |
|---|---|---|
| "AI is very useful for us." | 語彙が単純すぎる | "AI offers transformative potential for humanity." |
| "On the other hand, some people think AI is bad." | 理由・根拠なし | 必ず "because / since / as" で根拠を追加する |
| "I agree with both opinions." | 立場が不明確（TR 減点） | "While I acknowledge both perspectives, I believe..." と立場を示す |
| "In conclusion, AI has both good and bad points." | 結論が内容の繰り返しのみ | 新しい示唆（規制・協力・教育）を加えて締める |
| "The jobs will be lost." | 受動態の使い方が不自然 | "Jobs are likely to be displaced / automated." |
| Body が 1 段落のみで両方の意見を混在 | 段落構成の理解不足 | Body 1 = 肯定側、Body 2 = 否定側と完全に分ける |