英検準1級英作文解答例7テーマ｜模範解答＋解説（無料）| 英検AIラボ

出る度の高い頻出テーマ順に並べています。上から取り組むほど、本番で出会いやすいテーマを先におさえられます。同じ「意見→理由→結論」の型は、どのテーマにもそのまま使えます。

解答の色分け：主張理由・展開譲歩結論

1国際機関は地球温暖化に対してより強い権限を持つべきか

出る度最頻出環境・国際語数目安: 約127語

解答例（構成を色分け）

主張International organizations should be granted greater authority to combat global warming. 論拠・展開The current voluntary framework, in which individual nations pledge to reduce emissions but face no binding enforcement, has proven inadequate. Without centralized oversight, countries that fail to meet their targets face no meaningful consequences, rendering the entire system ineffective. Furthermore, climate change is inherently a transnational problem that transcends national borders, making coordinated global action through empowered international bodies both logical and necessary. 譲歩・反論処理Admittedly, granting more authority to international organizations raises legitimate concerns about national sovereignty. However, given the severe nature of climate change, I believe such a compromise is not only justified but urgent. 結論Effective global cooperation, backed by enforceable standards, offers the most promising path toward a sustainable future.

キーフレーズ

binding enforcement centralized oversight transcends national borders national sovereignty

書き方のポイント

準1級は150〜200語を目指す。binding enforcement / sovereignty / transcendsなど1語で文脈を圧縮できる語を使う。反論処理は1段落で完結させる。

2ソーシャルメディアは民主主義に対して脅威となるか

出る度最頻出メディア・政治語数目安: 約130語

解答例

Social media poses a significant and growing threat to democratic societies. Perhaps most alarmingly, algorithms designed to maximize engagement tend to amplify extreme and emotionally charged content, creating echo chambers in which users are exposed primarily to views that reinforce their existing beliefs. This polarization undermines the rational public discourse that democracy fundamentally depends upon. Furthermore, the rapid, unchecked spread of disinformation through social platforms can manipulate public opinion on a massive scale, distorting electoral outcomes and eroding trust in democratic institutions. Proponents of social media argue that it democratizes information and empowers marginalized voices. While this is partly true, the mechanisms that enable such benefits simultaneously create conditions ripe for exploitation. Therefore, robust regulatory frameworks and greater platform accountability are urgently needed to safeguard democratic processes.

キーフレーズ

echo chambers polarization rational public discourse disinformation electoral outcomes marginalized voices

書き方のポイント

準1級のメディア・政治系トピック。echo chamber / disinformation / polarizationなど現代の論説によく出る語を使う。Proponentsで反論処理。

3先進国は発展途上国に対してより多くの援助を提供すべきか

出る度頻出国際・経済語数目安: 約127語

解答例（構成を色分け）

主張Developed nations have both the moral obligation and the practical incentive to increase aid to developing countries. 論拠・展開From a humanitarian perspective, extreme poverty, preventable disease, and inadequate education remain widespread in much of the developing world, and wealthier nations possess the resources to meaningfully address these conditions. Moreover, aid that fosters economic development in poorer regions creates new markets for exports, generating mutual economic benefits. 譲歩・反論処理Critics contend that foreign aid frequently fails to reach those who need it most due to corruption and poor governance. 論拠・展開This is a valid concern; however, rather than eliminating aid, the solution lies in implementing more rigorous accountability mechanisms. 結論Ultimately, a well-designed aid program focused on building institutional capacity and sustainable infrastructure can uplift millions and contribute to global stability.

キーフレーズ

moral obligation fosters economic development accountability mechanisms institutional capacity

書き方のポイント

準1級の国際問題テーマ。contend/rigorous/upliftなど準1級水準の語を意識して使う。Critics contendで反論を処理するパターンを習得する。

4遺伝子工学は人類に恩恵をもたらすか

出る度頻出科学・倫理語数目安: 約139語

解答例（構成を色分け）

主張Genetic engineering holds extraordinary promise for improving human health and well-being, but its benefits must be pursued with great caution. 論拠・展開On the positive side, gene-editing technologies have already demonstrated the potential to treat hereditary diseases that have caused immense suffering across generations. Additionally, genetically modified crops can be developed to withstand drought and poor soil conditions, potentially alleviating food insecurity in vulnerable regions. 譲歩・反論処理However, genetic engineering also raises profound ethical questions. 論拠・展開The prospect of selecting traits for children risks exacerbating social inequality if such technology is available only to the wealthy. Furthermore, unintended ecological consequences of releasing genetically modified organisms into the environment remain poorly understood. 結論On balance, I believe that genetic engineering can deliver substantial benefits to humanity provided that its development is guided by stringent ethical oversight and inclusive governance.

キーフレーズ

hereditary diseases food insecurity social inequality stringent ethical oversight

書き方のポイント

準1級の科学・倫理テーマ。stringent/alleviating/exacerbatingなど上位語彙を意識して使う。On balance〜providedの形で条件付き結論を提示するのが準1級らしい。

5都市化の進展は農村地域に悪影響をもたらすか

出る度頻出社会語数目安: 約135語

解答例（構成を色分け）

主張Rapid urbanization does pose significant challenges to rural communities, though the relationship between the two is more nuanced than a simple narrative of decline might suggest. 論拠・展開As populations migrate to cities in search of better economic opportunities, rural areas frequently experience depopulation, which undermines the viability of local businesses, schools, and healthcare facilities. This erosion of social infrastructure compounds economic stagnation, trapping remaining rural inhabitants in a cycle of decline. 譲歩・反論処理On the other hand, urbanization can relieve pressure on overstretched rural resources and prompt governments to invest in rural infrastructure. Nevertheless, in countries where urbanization is proceeding at a particularly rapid pace, rural communities are often left behind without adequate policy support. 結論For rural areas to thrive alongside growing cities, targeted investment in connectivity and digital infrastructure is indispensable.

キーフレーズ

depopulation viability of local businesses erosion of social infrastructure indispensable overstretched

書き方のポイント

準1級のurban-rural問題。depopulation / compound / indispensableなど論述的語彙を使う。単純な二項対立を避けてnuancedな視点を示すのが上位答案の特徴。

6核エネルギーは気候変動対策として有効か

出る度頻出環境・エネルギー語数目安: 約144語

解答例（構成を色分け）

主張Nuclear energy merits serious consideration as part of a comprehensive strategy to address climate change. 論拠・展開Unlike fossil fuels, nuclear power plants generate electricity without emitting greenhouse gases during operation, making them a potentially vital tool in the transition to a low-carbon economy. Modern reactor designs have substantially improved safety and efficiency compared to earlier generations. 譲歩・反論処理Opponents of nuclear energy often highlight the risks of catastrophic accidents and the unresolved problem of radioactive waste disposal. 論拠・展開These are legitimate concerns that cannot be dismissed. 譲歩・反論処理However, the sheer scale and urgency of the climate crisis demands that we evaluate all available low-carbon options rigorously. 論拠・展開A pragmatic approach would be to extend the operational lifespan of existing safe nuclear plants while investing in renewable energy. 結論Nuclear power alone is not sufficient, but it can serve as a reliable bridging technology during the energy transition.

キーフレーズ

low-carbon economy radioactive waste disposal bridging technology pragmatic approach

書き方のポイント

準1級の核エネルギー論。bridging technology / pragmatic / rigorouslyなど論評文の常套表現を使う。Opponentsで反論処理してpragmatic approachで締める構成。

7企業は利益よりも社会的責任を優先すべきか

出る度頻出ビジネス・倫理語数目安: 約143語

解答例

The view that corporations should prioritize social responsibility over profit reflects a misunderstanding of how sustainable businesses actually function. Companies that ignore social and environmental responsibilities inevitably damage their reputations, alienate consumers, and face increasing regulatory scrutiny — all of which ultimately harm long-term profitability. Conversely, businesses that invest in sustainable practices, treat their employees well, and contribute to their communities tend to attract loyal customers and talented employees, creating a virtuous cycle of growth. The dichotomy between profit and social responsibility is therefore largely a false one. Naturally, some corporations engage in socially responsible behavior primarily for marketing purposes rather than genuine commitment. To prevent such superficiality, governments should establish clear and enforceable standards for corporate social responsibility. In essence, enlightened self-interest and genuine social responsibility are more complementary than they are at odds.

キーフレーズ

alienate consumers regulatory scrutiny virtuous cycle enlightened self-interest complementary

書き方のポイント

準1級のビジネス・倫理テーマ。虚偽の二項対立（false dichotomy）を崩す論法は準1〜1級で高評価。enlightened self-interestは覚えておきたいキーフレーズ。

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