约8分钟阅读
介词(preposition)的作用远不止描述物理位置或方向。在高级英语中,介词经常表达抽象关系——情绪状态、逻辑联系、程度强弱,以及没有直接空间对应物的比喻意义。掌握这些抽象用法,是写好学术文章、职场文书和成熟的一般性文章的关键。
每个介词最初都是表示空间的词。几个世纪以来,说英语的人通过隐喻把这些空间意义延伸到了抽象领域。理解这一演变过程,能帮你真正内化抽象介词,而不只是死记硬背。
以 under 为例。它的核心意义是具体的物理位置:The cat is under the table. 但英语把这种空间关系延伸到了几十种抽象语境中:
几乎每个常用介词都遵循同样的规律。
beyond 的空间意义(在……的另一边)很自然地延伸到抽象语境,表示「超过」或「在……范围之外」:
在学术写作中,beyond 特别适合用来划定范围:A full analysis of this phenomenon is beyond the scope of this paper.
Within(在……之内)用于非物理的边界时,就变成了抽象用法:
Above 和 below 很自然地对应到等级和评价类的抽象概念上:
某些「介词 + 名词」组合在学术和职场语境中反复出现。它们不是传统意义上的习语——它们遵循一定的逻辑规律,但你必须记住哪个介词和哪个抽象名词搭配。
| 搭配 | 含义 | 示例 |
|---|---|---|
| on account of | 因为 | The event was canceled on account of severe weather. |
| owing to | 因为(正式) | Owing to budget constraints, the project was delayed. |
| on the basis of | 以……为依据 | Candidates are selected on the basis of merit. |
| in light of | 鉴于、考虑到 | In light of recent evidence, the theory must be revised. |
| by virtue of | 凭借(某种品质) | She succeeded by virtue of her persistence. |
| 搭配 | 含义 | 示例 |
|---|---|---|
| to a great extent | 在很大程度上 | The outcome depends to a great extent on preparation. |
| in large part | 主要地 | The success was in large part due to teamwork. |
| to some degree | 在某种程度上 | All languages are to some degree influenced by culture. |
| at the expense of | 以牺牲……为代价 | Speed was prioritized at the expense of accuracy. |
| in excess of | 超过 | The cost was in excess of the original estimate. |
| 搭配 | 含义 | 示例 |
|---|---|---|
| in relation to | 关于、与……相关 | The data is analyzed in relation to previous findings. |
| in connection with | 与……有关联 | Two suspects were arrested in connection with the robbery. |
| in contrast to | 与……不同 | In contrast to earlier studies, this research found no correlation. |
| in comparison with | 与……相比 | In comparison with last year, sales increased by 12%. |
| with reference to | 关于、就……而言 | With reference to your inquiry, I can confirm the details. |
抽象介词并非正式写作所独有。许多日常表达都依赖介词的比喻用法:
对熟练的英语使用者来说,这些表达听起来很自然,但它们都依赖空间隐喻,而这些隐喻是可以被系统地分析和理解的。
即使是高水平的写作者,在抽象介词上也会犯一些可以预见的错误:
| 错误 | 更正 | 规则 |
|---|---|---|
| under my opinion | in my opinion | 观点是容器,不是重物 |
| on the contrary of | contrary to | 固定表达;不加 "of" |
| in the other hand | on the other hand | 固定表达;用 "on" 而不是 "in" |
| beyond of the scope | beyond the scope | "Beyond" 后面不接 "of" |
| within of the limits | within the limits | "Within" 后面不接 "of" |
| above of average | above average | "above" 和名词之间不加 "of" |
要内化抽象介词:
约9分钟阅读
复合介词短语(complex prepositional phrases)——也叫多词介词或复合介词——由两个或更多的词组成,整体作为一个介词使用。in spite of、with regard to、on behalf of 这类短语是正式英语写作的常客。它们能让写作者表达简单的单词介词无法传达的细微关系。
复合介词短语通常遵循以下几种结构:
| 结构 | 示例 |
|---|---|
| 介词 + 名词 + 介词 | in spite of, on behalf of, by means of, in terms of, in lieu of |
| 介词 + 名词 | despite(历史上曾作 "in despite of"), aboard, inside |
| 副词/形容词 + 介词 | prior to, due to, close to, apart from |
| 介词 + 名词 + 介词 + 名词 | in the event of, at the expense of, for the sake of |
它的决定性特征是:整个短语作为一个完整的介词单位起作用。你不能删掉或调换其中的成分,否则意思就被破坏了。
这些短语引出与主要观点相冲突或对其加以限定的内容:
In spite of / Despite
Regardless of
Notwithstanding
For the purpose of
For the sake of
On account of
By virtue of
With regard to / With respect to / In regard to
In terms of
As for / As to
In the case of
On behalf of
In lieu of
In place of
In addition to
Along with
Apart from
复合介词短语往往会提高文章的正式程度。这在学术和职场语境中很有用,但可能让随意的文字显得生硬或做作。
| 非正式 | 中性 | 正式 |
|---|---|---|
| because of | due to | on account of / by virtue of |
| about | regarding | with regard to / with respect to |
| except for | other than | with the exception of |
| instead of | rather than | in lieu of |
| also / and | as well as | in addition to |
| even though | although | notwithstanding / in spite of |
| before | prior to | in advance of |
| like | similar to | in a manner consistent with |
目标不是永远选最正式的那一个,而是与你文章的语域相匹配。在学术论文里,"with regard to" 很得体;在博客文章里,"about" 更好。
高水平学习者的一个常见错误,是为了显得「更学术」而在句子里塞满复合介词短语。结果就是臃肿的文字:
堆砌: With regard to the implementation of the policy in terms of its effectiveness in the context of developing nations, in spite of the challenges associated with resource allocation, the outcomes were, in large part, in line with expectations.
修改后: Despite resource allocation challenges, the policy was largely effective in developing nations.
只有当复合介词短语确实能提高精确度或正式程度时才用它。如果它只增加长度而不增加意义,就换成更简单的说法。
复合介词短语放在句首时,后面加逗号:
短语出现在句中时,要不要加逗号取决于它是不是插入成分:
| 错误 | 更正 | 说明 |
|---|---|---|
| despite of the rain | despite the rain | "Despite" 后面不接 "of" |
| in regards to | in regard to | 标准正式英语中 "regard" 不加 's' |
| on the behalf of | on behalf of | 这个固定短语中没有 "the" |
| irregardless of | regardless of | "Irregardless" 不规范 |
| in terms in quality | in terms of quality | 这个短语必须用 "of" |
| in despite of | in spite of 或 despite | "In despite of" 是古旧用法 |
| for the purposes to | for the purpose of | 这个短语要求 "of" + 动名词 |
约10分钟阅读
高级英语中最有挑战性的内容之一,是与介词或小品词结合的动词。这些组合——介词动词、短语动词和短语介词动词——在意义、语法和正式程度上各有不同的表现。弄清它们之间的区别,对写出准确、地道的英语至关重要。
介词动词(prepositional verb)是动词后面跟一个介词,而这个介词不能与它的宾语分开。介词保留其核心意义,整个组合的意思相对一目了然。
关键语法规则: 介词必须紧挨在宾语前面,二者不能分开。
短语动词(phrasal verb)是动词与一个小品词(particle)的组合——小品词看起来像介词,但实际上是动词的一部分。这种组合会产生新的意义,而这个意义往往无法从单个词推断出来。
关键语法规则: 及物的短语动词,小品词可以与动词分开。当宾语是代词时,必须分开。
短语介词动词(phrasal-prepositional verb)由动词加一个小品词再加一个介词组成。它们永远不可分开。
区分二者很重要,因为它影响语序、正式程度和意义。
| 特征 | 介词动词 | 短语动词 |
|---|---|---|
| 可分开吗? | 永远不可 | 通常可以(宾语是代词时必须分开) |
| 意义 | 通常一目了然 | 通常是习语性的 |
| 正式程度 | 中性到正式 | 通常偏非正式 |
| 被动语态 | 正常 | 有时别扭 |
| 示例 | rely on(意思清楚) | make up(意思多变) |
如果宾语能放在动词和介词/小品词之间,那就是短语动词:
如果去掉小品词后意思发生根本变化,那就是短语动词:
学术和职场文本明显偏爱介词动词而不是短语动词,因为介词动词听起来更正式,意思也更清楚。
| 动词 | 示例 |
|---|---|
| focus on | This study focuses on the relationship between diet and performance. |
| concentrate on | The analysis concentrates on three key variables. |
| elaborate on | The author elaborates on this point in Chapter 4. |
| comment on | Several critics have commented on the methodology. |
| reflect on | The discussion reflects on the implications of the findings. |
| speculate about | Researchers speculate about possible explanations. |
| 动词 | 示例 |
|---|---|
| result in | The intervention resulted in improved outcomes. |
| result from | The improvement resulted from sustained effort. |
| lead to | Deforestation leads to soil erosion. |
| contribute to | Multiple factors contributed to the decline. |
| stem from | The problem stems from a fundamental design flaw. |
| give rise to | The discovery gave rise to a new field of research. |
| 动词 | 示例 |
|---|---|
| account for | Renewable energy accounts for 30% of total production. |
| amount to | Total losses amounted to $2.5 million. |
| relate to | The increase relates to changes in consumer behavior. |
| correspond to | Each symbol corresponds to a specific data point. |
| 动词 | 示例 |
|---|---|
| comply with | All participants must comply with the guidelines. |
| conform to | The results conform to the predicted pattern. |
| adhere to | The study adheres to established ethical standards. |
| align with | The findings align with previous research. |
在学术和职场语境中,短语动词通常会被更正式的单个动词或介词动词取代。这不是要完全回避短语动词——而是要选择合适的语域(register)。
| 短语动词(非正式) | 正式替代说法 |
|---|---|
| find out | discover, determine, ascertain |
| carry out | conduct, perform, execute |
| look into | investigate, examine, explore |
| bring about | cause, produce, generate |
| set up | establish, create, institute |
| point out | indicate, highlight, note |
| make up | constitute, comprise |
| go up | increase, rise |
| go down | decrease, decline |
| come up with | devise, develop, propose |
| put forward | propose, suggest, advance |
| turn down | reject, decline |
| break down | analyze, decompose, categorize |
| leave out | omit, exclude |
| take into account | consider |
重要细节: 短语动词在正式写作中并不算错——只是用得少一些。一个用得恰到好处的短语动词,能让学术文章读起来更顺畅。关键在于意识:清楚自己是在做语域上的选择。
高级写作中的许多错误,来自给动词配错了介词。这些无法从规则推导出来——必须作为固定搭配来记。
| 错误 | 更正 | 说明 |
|---|---|---|
| depend of | depend on | 永远用 "on" |
| consist in(表示「由……组成」时) | consist of | "Consist in" 确实存在,但意思是「以……为本质特征」 |
| result to | result in(导致)/ result from(由……引起) | 方向很重要 |
| comply to | comply with | 永远用 "with" |
| focus in | focus on | 永远用 "on" |
| account on | account for | 永远用 "for" |
| contribute for | contribute to | 永远用 "to" |
| insist to | insist on | 永远用 "on" |
| succeed to do | succeed in doing | 接动名词,不接不定式 |
约9分钟阅读
本节集中整理了正式写作、学术写作和职场写作中的高级介词用法。起草或修改文章时,可以把它当作速查资料。
正式写作往往要求更精确或更庄重的介词。下表把日常介词与其正式对应说法一一对应起来。
| 常用介词 | 正式替代说法 | 示例 |
|---|---|---|
| about | regarding, concerning, with respect to, pertaining to | Regarding your inquiry, we can confirm the shipment date. |
| after | following, subsequent to | Following the presentation, questions were invited. |
| before | prior to, in advance of, preceding | Prior to the experiment, all instruments were calibrated. |
| because of | due to, owing to, on account of, as a result of | Due to unforeseen circumstances, the meeting has been rescheduled. |
| but / except | with the exception of, excluding, save for | All departments, with the exception of Finance, met their targets. |
| like | such as, similar to, analogous to | Countries such as Japan and Germany have aging populations. |
| about(表示「大约」) | approximately, in the region of, on the order of | The project cost was in the region of $2 million. |
| through | by means of, via, through the medium of | Data was collected by means of structured interviews. |
| without | in the absence of, lacking | In the absence of conclusive evidence, no determination was made. |
| among | amongst(英式正式用法), amid | Amid growing concern, the government issued a statement. |
学术写作所依赖的介词句式,数量少得出人意料。以下句式通用于各个学科,是撰写研究论文、报告和正式议论文的必备工具。
这些短语界定所讨论内容的边界:
这些短语把论断与证据联系起来:
这些短语建立分析性的关系:
这些短语描述某件事是如何完成的:
下表列出正式写作中经常出错的「形容词 + 介词」和「名词 + 介词」固定搭配(collocations)。
| 形容词 | 介词 | 示例 |
|---|---|---|
| aware | of | aware of the risks |
| responsible | for | responsible for the oversight |
| consistent | with | consistent with prior findings |
| dependent | on | dependent on external funding |
| relevant | to | relevant to the discussion |
| capable | of | capable of sustained growth |
| sensitive | to | sensitive to environmental changes |
| subject | to | subject to regulatory approval |
| compatible | with | compatible with existing systems |
| conducive | to | conducive to learning |
| indicative | of | indicative of a broader trend |
| susceptible | to | susceptible to bias |
| analogous | to | analogous to the previous case |
| commensurate | with | commensurate with experience |
| tantamount | to | tantamount to an admission |
| inherent | in | inherent in the system |
| contingent | on/upon | contingent on funding approval |
| incumbent | on/upon | incumbent upon the institution to act |
| 名词 | 介词 | 示例 |
|---|---|---|
| basis | for | the basis for the decision |
| impact | on | the impact on performance |
| emphasis | on | greater emphasis on quality |
| influence | on | a significant influence on outcomes |
| approach | to | an innovative approach to problem-solving |
| response | to | the government's response to the crisis |
| contribution | to | a major contribution to the field |
| demand | for | growing demand for renewable energy |
| evidence | of / for | evidence of correlation / evidence for the theory |
| alternative | to | a viable alternative to surgery |
| barrier | to | a barrier to entry |
| threat | to | a threat to biodiversity |
| solution | to | a practical solution to the problem |
| increase / decrease | in | an increase in production |
| access | to | access to education |
| reliance | on | excessive reliance on fossil fuels |
以下错误在学术论文、商务报告和职场信函中频繁出现。每一条都代表一种值得记住的规律。
| 错误 | 正确 | 说明 |
|---|---|---|
| discuss about the issue | discuss the issue | "Discuss" 是及物动词——不需要介词 |
| emphasize on the point | emphasize the point | "Emphasize" 是及物动词——不需要介词 |
| comprise of five parts | comprise five parts | "Comprise" 是及物动词;"consist of" 才要带 "of" |
| request for assistance(作动词时) | request assistance | "Request" 作动词时是及物动词 |
| mention about the topic | mention the topic | "Mention" 是及物动词——不需要介词 |
| 错误 | 正确 | 说明 |
|---|---|---|
| comply the rules | comply with the rules | 不及物动词——必须加 "with" |
| respond the question | respond to the question | 不及物动词——必须加 "to" |
| participate the project | participate in the project | 不及物动词——必须加 "in" |
| subscribe the theory | subscribe to the theory | 不及物动词——必须加 "to" |
「不能以介词结尾」这条老「规则」其实是个误区。很多时候,把介词往前挪反而会让句子别扭、生硬:
两种写法在语法上都正确。在正式的学术写作中,有时更倾向于「前置」的写法(把介词挪到前面)。在其他所有语域中,把介词放在句末都自然且被接受。丘吉尔有一句著名的俏皮话很好地说明了这一点:"This is the sort of nonsense up with which I will not put."
有些错误是多加了一个不必要的介词:
| 错误 | 正确 |
|---|---|
| inside of the building | inside the building(正式写作中) |
| outside of the scope | outside the scope(正式写作中) |
| off of the table | off the table |
| alongside of the road | alongside the road |
注意:"Inside of" 和 "outside of" 在非正式用法中可以接受,但在正式写作中应避免。
学术英语中的某些表达,其介词用法无法用规则推断。这些必须作为完整的单位来记:
| 表达 | 含义 |
|---|---|
| at the outset | 在开始时 |
| in the first instance | 起初、首先 |
| at the forefront of | 处于……的前沿、在……中最突出 |
| on the whole | 总体上、大体而言 |
| in the long run | 从长远来看、最终 |
| at this juncture | 在这个时刻 |
| to this end | 为此 |
| in this regard | 在这方面 |
| on these grounds | 基于这些理由 |
| in its own right | 凭其自身、本身就 |
| by and large | 大体上、基本上 |
| for the most part | 大部分、通常 |
| at any rate | 无论如何、不管怎样 |
| in the event of | 如果(某事)发生 |
| at the discretion of | 由……决定 |
| on the grounds of | 因为(正式) |
在正式写作中选择介词时,问自己三个问题:
拿不准时,查一本明确标注介词搭配的学习型词典,或者在已出版学术文本的语料库中搜索这个短语。