该短语的结构为 主语 + play a role in + 宾语,需注意以下要点:
“in” 是介词,后面需接名词、代词或动名词(doing),不能接动词原形。
接名词:
Technology plays a key role in modern communication.
(科技在现代通信中起关键作用。)
接动名词:
Regular reading plays a role in improving vocabulary.
(定期阅读对提升词汇量有帮助。)
接代词(指代前文提到的事物):
Teamwork played a big role in it.
(团队合作在这件事里起了很大作用。)
为了更具体地说明“作用的大小/性质”,常在 “role” 前加形容词,常见搭配有:
play an important/crucial/vital role in (起重要/关键/至关重要的作用)
Education plays a vital role in shaping one’s future.
(教育在塑造一个人的未来中至关重要。)
play a positive/negative role in (起积极/消极作用)
Social media plays a positive role in connecting people, but it can also be negative.
(社交媒体在连接人与人方面起积极作用,但也可能有消极影响。)
play a minor/major role in (起次要/主要作用)
He played a minor role in the movie.
(他在这部电影里扮演次要角色。)
主语可以是人、物、抽象概念(如政策、文化、科技等):
人:She played a crucial role in the project’s success.
(她在项目成功中起了关键作用。)
物:The internet plays a central role in our daily lives.
(互联网在我们的日常生活中起核心作用。)
抽象概念:Trust plays a fundamental role in any relationship.
(信任在任何关系中都起基础作用。)
Hard work plays a part in achieving goals.
(努力工作对实现目标有帮助。)
“play a role in” 是表达“参与、影响”的高频短语,核心是说明“某个主体对某件事的作用”。使用时只需注意“in”后接正确的成分,并根据语境选择合适的形容词修饰“role”,就能准确传达意思。