雅思写作全真模拟 Task 2 · 肥胖问题（Problem/Solution · 范文+拆解）

Problem/Solution：原因+方案。本题讨论全球肥胖率上升。

题目 Task

Obesity is becoming more common in many countries. What are the causes of this problem, and what measures can governments take to address it?

Give reasons for your answer and include any relevant examples from your own knowledge or experience.

Write at least 250 words.

范文（约 300 词）

Obesity rates have more than doubled worldwide since 1990, posing a major public health challenge. This essay examines the main causes of rising obesity and outlines government measures that can reverse the trend.

The primary cause is the widespread availability of cheap, calorie-dense processed food. Sugary drinks, fast food and pre-packaged snacks are heavily marketed, widely available and cheaper than fresh produce. Food companies spend billions on advertising targeted at children. At the same time, people in many countries have become more sedentary: office jobs, cars and screen-based entertainment have reduced daily physical activity. Urban planning often makes walking and cycling impractical, with little access to safe parks or sports facilities.

Governments have several effective tools at their disposal. First, they can tax sugary drinks and unhealthy foods, as Mexico and the United Kingdom have done. Revenue from such taxes can fund public health campaigns. Second, advertising of junk food to children should be restricted — Sweden and Quebec have banned such ads with positive results. Third, cities should invest in walkable neighbourhoods, cycle lanes and public sports facilities, making healthy lifestyles the easy option rather than the exception.

Finally, schools should provide nutritious meals and ensure at least one hour of daily physical activity. Educating children about nutrition early can create lifelong habits that offset the obesogenic environment.

In conclusion, obesity is driven by food marketing, urban design and sedentary lifestyles, but governments can reverse it through taxation, regulation and investment in active, healthy environments.

逐段拆解

高分词汇

• calorie-dense（高热量的）
• sedentary（久坐的）
• obesogenic environment（致肥胖环境）
• walkable neighbourhoods（适合步行的社区）
• public health campaigns（公共健康运动）