基础原因句型 (适合所有分数段)

这些句型清晰、直接,是表达原因的基石。

because / because of

这是最直接、最常用的原因表达方式。

• `because + 句子 (从句)
  • 例: People are choosing to have fewer children because the cost of raising a family has become prohibitively high.

    (人们选择少生孩子，因为抚养家庭的成本已经高得令人望而却步。)

• because of + 名词/名词短语
  • 例: The rise in single-person households can be attributed to a number of factors, including urbanization and changing social norms.

    (单人户的增加可归因于多种因素，包括城市化和不断变化的社会规范。)

due to / owing to / thanks to

这三个词组后面通常跟名词，语气比 because of 更正式一些。

• due to + 名词
  • 例: The growing popularity of online education is due to its flexibility and accessibility.

    (在线教育的日益流行是由于其灵活性和易得性。)

• owing to + 名词
  • 例: Owing to the rapid advancement of technology, many traditional jobs are disappearing.

    (由于技术的飞速发展，许多传统工作正在消失。)

• thanks to + 名词
  • 注意: Thanks to 通常带有积极的、感激的意味。
  • 例: Thanks to government initiatives, air quality in major cities has improved significantly.

    (得益于政府的倡议，主要城市的空气质量已经显著改善。)

since / as

这两个词也可以用来引导原因从句，语气比 because 稍弱，常用于句首,解释一个对方已经知道或显而易见的原因。

• 例: Since the global population is aging, there is an increasing demand for healthcare services.

  (由于全球人口正在老龄化，对医疗服务的需求日益增长。)

• 例: As more women enter the workforce, the traditional structure of the family is changing.

  (随着更多女性进入职场，家庭的传统结构正在发生变化。)

The reason for... is that...

这是一个非常清晰、强调原因的句型。

• 例: The reason for the high rate of traffic congestion in urban areas is that too many people rely on private cars.

  (城市地区交通拥堵率高的原因是太多人依赖私家车。)

进阶原因句型 (提升语言丰富性，冲击高分)

这些句型能让你的文章显得更专业、更有逻辑性。

...is a consequence of / is a result of / stems from / arises from

这些词组强调“结果是……”，将原因放在句末,使句子结构更多样。

• be a consequence of / be a result of
  • 例: The environmental degradation we see today is a direct result of decades of unchecked industrialization.

    (我们今天看到的环境退化是数十年不受限制的工业化的直接后果。)

• stem from / arise from
  • 例: Many of the social problems in modern society stem from economic inequality.

    (现代社会中的许多社会问题源于经济不平等。)

This phenomenon can be attributed to several factors.

这是一个非常万能的“引出原因”的句子,非常适合在段落开头使用。

• 例: The decline in reading habits among young people can be attributed to several factors, such as the rise of digital media and shorter attention spans.

  (年轻人阅读习惯的下降可归因于几个因素，如数字媒体的兴起和注意力的缩短。)

...is largely driven by / is largely fueled by / is largely influenced by

这些词组带有动态感,暗示原因是一个持续的动力或影响力。

• be driven by
  • 例: The boom in the e-commerce industry is largely driven by changing consumer behavior and technological innovation.

    (电子商务行业的繁荣主要由不断变化的消费者行为和技术创新所驱动。)

• be fueled by
  • 例: The spread of misinformation online is often fueled by algorithms designed to maximize user engagement.

    (网络虚假信息的传播通常旨在最大化用户参与度的算法所助长。)

One of the primary reasons for... is...

用于强调在众多原因中,某个是主要的。

• 例: One of the primary reasons for the high obesity rates in developed nations is the overconsumption of processed foods.

  (发达国家肥胖率高的主要原因之一是加工食品的过度消费。)

高级原因句型 (展现复杂句式和词汇)

使用这些句型可以向考官展示你驾驭复杂语言结构的能力。

The root cause of... lies in...

用于探究问题的根本原因,语气非常深刻。

• 例: The root cause of many international conflicts lies in competition for limited natural resources.

  (许多国际冲突的根本原因在于对有限自然资源的竞争。)

...can be explained by a combination of factors, including...

用于阐述原因的复杂性,即多种因素共同作用。

• 例: The success of this educational reform can be explained by a combination of factors, including increased government funding, teacher training, and parental involvement.

  (这项教育改革的成功可以用多种因素来解释，包括增加的政府资金、教师培训和家长的参与。)

This is largely attributable to the fact that...

这是一个非常正式且学术的表达方式。

• 例: The preference for remote work is largely attributable to the fact that it offers employees greater work-life balance.

  (对远程工作的偏好很大程度上归因于它能为员工提供更好的工作与生活平衡。)

A significant contributing factor to... is...

Contributing factor (促成因素) 是一个非常地道的词,表示原因之一。

• 例: A significant contributing factor to the mental health crisis among adolescents is the constant pressure from social media.

  (青少年心理健康危机的一个重要促成因素是来自社交媒体的持续压力。)

词汇替换：让你的表达更精确

在雅思写作中，重复使用 reason 和 because 会显得词汇贫乏,以下是一些替换词：

例句:

• Trigger: The assassination of the archduke was the trigger for World War I.
• Catalyst: The new government policy acted as a catalyst for economic growth.
• Impetus: The technological boom provided the necessary impetus for the company's expansion.

实战应用：段落示例

** 为什么越来越多的人选择住在城市？

段落示例:

The trend of urbanization, where an increasing number of people are drawn to cities, can be attributed to a combination of economic and social factors. Primarily, the promise of better career opportunities serves as a powerful stimulus for migration. Cities, being economic hubs, offer a wider range of jobs and, crucially, the potential for higher salaries, which is a major motivation for many. Furthermore, the vibrant social life and the availability of diverse amenities, such as world-class education, healthcare, and entertainment, are also significant contributing factors. In essence, the pull of economic prosperity and a rich social experience largely drives this mass movement from rural to urban areas.

中文翻译: 城市化这一趋势，即越来越多的人被吸引到城市，可归