在大学英语四六级写作中，清晰表达原因和分析原因非常关键，这不仅让你的论述更有逻辑，也使观点更具说服力。本文精选了20个常用“原因句型”原型，并配有地道英文例句及中文翻译，帮助你在写作中自如切换、应对各类话题，轻松为你的作文增色。
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The main reason why A is that…
The main reason why many people prefer online shopping is that it saves time and offers greater convenience.
许多人喜欢网购的主要原因是它节省时间而且更方便。 -
There are several reasons for…
There are several reasons for the growing popularity of electric vehicles.
电动汽车日益流行有多方面的原因。 -
This can be attributed to…
The decline in reading among young people can be attributed to the rise of social media.
年轻人阅读量减少，可以归咎于社交媒体的兴起。 -
One possible reason is that…
One possible reason is that students lack interest in traditional subjects.
其中一个原因是学生对传统学科缺乏兴趣。 -
The fundamental cause of A lies in…
The fundamental cause of environmental pollution lies in human activities.
环境污染的根本原因在于人类活动。 -
A results from…
Child obesity often results from poor diet and lack of exercise.
儿童肥胖通常是由不良饮食和缺乏锻炼导致的。 -
A is due to…
The rapid development of technology is due to continuous innovation and investment.
科技的飞速发展源于持续创新和投入。 -
A can be explained by the fact that…
The success of this project can be explained by the fact that the team worked together efficiently.
这个项目取得成功，可以用团队高效合作来解释。 -
The primary factor contributing to A is…
The primary factor contributing to students’ academic success is effective time management.
学生取得学习进步的主要因素是高效的时间管理 -
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The underlying reason for A is that…
The underlying reason for his absence is that he has been ill recently.
他缺席的根本原因是最近生病了。 -
A arises from…
Most traffic accidents arise from careless driving.
大多数交通事故是由粗心驾驶引起的。 -
A is largely because…
The increase in unemployment is largely because of the economic downturn.
失业率上升主要是由于经济衰退。 -
A stems from…
Success often stems from persistence and diligence.
成功通常源于坚持和勤奋。 -
A is mainly caused by…
Air pollution is mainly caused by vehicle emissions and factory waste.
空气污染主要由汽车尾气和工厂废气造成。 -
The explanation for A is that…
The explanation for his high scores is that he studied very hard.
他分数高的原因在于他非常努力学习。 -
A is the result of…
Global warming is the result of excessive carbon emissions.
全球变暖是过度碳排放的结果。 -
One of the reasons why A is that…
One of the reasons why English is so widely used is that it is the language of international business and science.
英语使用广泛的原因之一是它是国际商务和科学的语言。 -
The reason for A is not only…, but also…
The reason for his failure is not only lack of ability, but also poor time management.
他失败的原因不仅仅是能力不足，还有时间管理差。 -
A can be accounted for by…
The popularity of smartphones can be accounted for by their multifunctionality.
智能手机受欢迎是因为它们的多功能性。 -
A is mainly attributable to…
The company’s rapid growth is mainly attributable to its innovative products.
公司快速发展的主要原因是其创新产品。
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