非谓语作状语是指用 infinitive、present participle、past participle 等非谓语结构来表达目的、原因、时间、条件、结果、让步或伴随状态。它常用于学术写作和 PTE Academic / IELTS Writing 中,使句子更紧凑、更正式。例如,To reduce emissions, governments should invest in renewable energy. 中的 To reduce emissions 表示目的;Having analyzed the data, the researchers revised their hypothesis. 中的 Having analyzed the data 表示先发生的动作。学习重点包括:明确逻辑主语、区分主动与被动、判断动作先后顺序,并避免 dangling modifier 悬垂修饰语。
核心语法结构
Grammar Formula
1. To do ..., 主句. / 2. Doing ..., 主句. / 3. Done ..., 主句. / 4. Having done ..., 主句. / 5. Having been done ..., 主句. / 6. 主句, doing ...
PTE 高频程度
高频
AI 学习推荐
Core Grammar
适用考试
PTE / IELTS
语法结构
Grammar Structure
结构公式
1. To do ..., 主句. / 2. Doing ..., 主句. / 3. Done ..., 主句. / 4. Having done ..., 主句. / 5. Having been done ..., 主句. / 6. 主句, doing ...
非谓语作状语时,本身不作谓语,而是修饰整个主句或主句中的动词。to do 通常表示目的、结果或评价;doing 表示主动、同时发生、原因、条件或伴随;done 表示被动、完成或状态;having done 表示该动作发生在主句动作之前;having been done 表示被动且先于主句发生。最重要的语法原则是:非谓语结构的逻辑主语通常必须与主句主语一致。如果不一致,就容易形成 dangling modifier,导致句意不清或语法错误。
To improve public health, the government has introduced stricter regulations on food safety.
为了改善公共健康,政府已经出台了更严格的食品安全规定。
Facing increasing competition, many universities are investing more in online education.
面对日益激烈的竞争,许多大学正在加大对在线教育的投入。
Given the limited evidence, the conclusion should be interpreted with caution.
鉴于证据有限,该结论应被谨慎解读。
Having completed the survey, the researchers compared the results across different age groups.
完成调查后,研究人员比较了不同年龄组之间的结果。
使用场景
Usage Scenarios
表示目的 Purpose
用 to do 或 in order to do 表示主句动作的目的。在 IELTS Writing Task 2 和 PTE Essay 中,这种结构常用于提出政策目标、研究目的或个人行为动机。
To address urban congestion, cities should expand public transport networks.
为了应对城市拥堵,城市应扩展公共交通网络。
In order to enhance productivity, companies are adopting flexible working arrangements.
为了提高生产力,公司正在采用灵活的工作安排。
表示原因 Reason
用 doing、having done 或过去分词短语表达原因。与 because 从句相比,非谓语原因状语更正式、更简洁,适合学术写作。
Recognizing the importance of early education, many governments have increased funding for preschool programs.
认识到早期教育的重要性,许多政府增加了对学前教育项目的资金投入。
Having experienced rapid population growth, the city now faces severe pressure on housing.
To address this issue, policymakers should adopt a more evidence-based approach.
为了解决这一问题,政策制定者应采用更加基于证据的方法。
Given the complexity of the problem, a single solution is unlikely to be effective.
鉴于该问题的复杂性,单一解决方案不太可能有效。
Having examined the available data, researchers concluded that the trend was statistically significant.
在分析现有数据后,研究人员得出结论认为该趋势具有统计显著性。
Used in moderation, digital technology can enhance learning outcomes.
如果适度使用,数字技术可以提升学习成果。
The reform reduced unnecessary procedures, enabling institutions to operate more efficiently.
该改革减少了不必要的流程,使机构能够更高效地运作。
While recognizing the advantages of globalization, it is necessary to consider its social costs.
在承认全球化优势的同时,也有必要考虑其社会成本。
Compared with previous generations, young people today have greater access to information.
与前几代人相比,今天的年轻人能够更容易地获取信息。
Failing to address income inequality may undermine long-term social stability.
未能解决收入不平等问题可能会削弱长期社会稳定。
PTE 高频应用
PTE Usage
非谓语作状语在 PTE Academic 中非常常见,尤其出现在 Reading & Writing: Fill in the Blanks、Re-order Paragraphs、Summarize Written Text、Write Essay 和 Listening: Summarize Spoken Text 中。它可以帮助考生识别句子结构、判断逻辑关系并提升写作复杂度。在 PTE 写作中,合理使用 To address this issue、Given the evidence、Having considered both views、resulting in 等结构,可以提高 grammatical range and accuracy,但必须避免逻辑主语错误和过度堆砌。