犬學（Cynology）

 犬學（Cynology）

● 字源

「犬學」對應英文為 Cynology。Cynology 源自希臘文 kyōn（所有格 kynos，狗）與 -logia（研究），字面意思為「研究狗之學」。此學科研究犬類的行為、認知、育種、訓練與演化，涵蓋動物行為學、遺傳學與比較心理學，在部分國家也指犬隻訓練與育種的實務領域。

● 例句

Seldom has cynology, which researchers define as the scientific study of dogs and their behavior, produced a single finding far more striking than the discovery that dogs, though descended from wolves, can follow human pointing gestures across several independent experiments, a skill that wolves, even when raised by people from infancy, rarely master, and one that scientists, who had long assumed training alone was responsible, now cautiously attribute to selection pressures that, if the accumulated evidence is to be trusted, shaped canine cognition during thousands of years of domestication.

● 排列為比較容易閱讀的方式

Seldom has cynology,

which researchers define as the scientific study of dogs and their behavior,

produced a single finding far more striking than the discovery

that dogs,

though descended from wolves,

can follow human pointing gestures across several independent experiments,

a skill

that wolves,

even when raised by people from infancy,

rarely master,

and one

that scientists,

who had long assumed training alone was responsible,

now cautiously attribute to selection pressures

that,

if the accumulated evidence is to be trusted,

shaped canine cognition during thousands of years of domestication.

● 分解為原初的短小句

Cynology has seldom produced a finding more striking than the discovery.（Seldom 倒裝還原後的主幹，比較級 more striking than。）

Researchers define cynology as the scientific study of dogs and their behavior.（which 引導之非限定性關係子句，define A as B。）

Dogs can follow human pointing gestures across several independent experiments.（the discovery 之同位語 that 子句主幹。）

Dogs are descended from wolves.（though 引導之讓步分詞片語還原，被動語態。）

Wolves rarely master the skill.（a skill that 引導之限定性關係子句，that 作 master 之受詞。）

Wolves are raised by people from infancy.（even when 引導之讓步子句省略主詞與 be 動詞，被動語態。）

Scientists now cautiously attribute the skill to selection pressures.（and one that 引導之第二個關係子句，attribute A to B。）

Scientists had long assumed that training alone was responsible.（who 引導之非限定性關係子句，過去完成式加名詞子句。）

Selection pressures shaped canine cognition during thousands of years of domestication.（pressures that 引導之關係子句主幹。）

The accumulated evidence is to be trusted.（if 條件子句還原，be to V 表目的性條件。）

● 文法解析

Seldom 否定副詞倒裝（Seldom + has/have + S + p.p. ...）：

Seldom 置於句首，後接助動詞 has 與主詞 cynology 倒裝，還原為 Cynology has seldom produced。句首的否定副詞強調這類發現極為罕見，句型為 Seldom has S + p.p. + a finding more striking than ...。

插入式非限定性關係子句與比較結構（cynology, which ..., produced a finding far more striking than the discovery）：

which 子句插在主詞 cynology 與動詞 produced 之間，把主詞與動詞拉開。far more striking than 為比較級，far 強調差距，than 後接 the discovery，帶出後面整串修飾。

同位語 that 子句與讓步片語插入（the discovery that dogs, though descended from wolves, can follow ...）：

that 子句為 the discovery 的同位語，說明發現的內容。though descended 為省略主詞與 be 動詞的讓步片語，插在 dogs 與 can 之間，讓同位語子句的主詞與動詞再度被隔開。

並列同位語與兩個關係子句（a skill that wolves, ..., rarely master, and one that scientists, ..., now cautiously attribute to ...）：

a skill 與 one 並列，同為前面整個 that 子句的同位語。第一個 that 在關係子句中作 master 的受詞，even when raised 為省略式讓步子句。第二個 one 指代 a skill，that 作 attribute 的受詞，who 子句再插入主詞與動詞之間。

條件子句插入與 be to V（selection pressures that, if the accumulated evidence is to be trusted, shaped ...）：

that 為 pressures 之關係代名詞，作 shaped 的主詞。if 子句插在 that 與 shaped 之間，以 be to V 表達「若要被信賴」的條件，再接 shaped 主動詞，並以 during thousands of years of domestication 收束全句。

● 參考譯文

研究者將犬學定義為對狗及其行為的科學研究，這門學科很少產生比下列發現更引人注目的成果：狗雖由狼演化而來，卻能在數項獨立實驗中跟隨人類的指示手勢，這項能力即使是從幼年起由人類飼養的狼也很少能掌握，而這項能力，長期以來假定僅憑訓練所致的科學家，如今則謹慎地歸因於選擇壓力，倘若累積的證據可信，這些壓力在數千年的馴化過程中塑造了犬類的認知。

● 補充說明

句型亮點與文法變化：

Seldom 倒裝： 異於前幾篇的 Should、Were...to、Only after、Had、Nowhere 與 Not only 倒裝，本篇改用 Seldom has + S + p.p.，屬否定副詞引導的倒裝，句型有新意。

不使用分號： 全句僅以 which、that、though、even when、who、if 等連接詞與關係詞層層推進，單一主幹貫穿到底。

多重插入： 主詞 cynology 與動詞 produced 之間、dogs 與 can follow 之間、wolves 與 master 之間、scientists 與 attribute 之間、that 與 shaped 之間，共有五處插入，主詞與動詞的距離不斷被拉長。

並列同位語收束： a skill ... and one ... 兩個關係子句並列，再以 that 引導之條件插入與主動詞收尾。

核心學術字彙與文法重點總結：

關鍵字詞： Cynology（犬學）、Domestication（馴化）、Descended from（源自）、Gesture（手勢）、Cognition（認知）、Selection Pressure（選擇壓力）、Attribute A to B（將 A 歸因於 B）、Accumulated（累積的）、Infancy（幼年期）。

文法重點： Seldom 倒裝、比較級加 far 強調、非限定性關係子句、同位語 that 子句、though 與 even when 省略式讓步、關係代名詞作受詞、並列同位語、if it is to be trusted（be to V）、過去完成式。

一點小提醒：參考譯文為求順暢，已調整部分分句順序，並將 cynology 後的 which 子句前置為說明語。

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