That、Which、Who：TOEFL Reading 同 Writing 嘅關係子句陷阱

喺一個 Write for an Academic Discussion 回應做到一半，你總結一個學術論點：「The professor described a method, which was developed in the 1960s, that involves measuring soil density.」你撳交，對啲詞彙感覺良好，繼續向前。一位評分員讀咗兩次——啲逗號同關係代詞做緊唔一致嘅工作，而個意思取決於讀者點樣詮釋每個子句而轉變。歡迎嚟到 TOEFL iBT 2026 上面最被低估嘅文法題目之一：關係子句。

關係子句畀英文佢嘅層次感。佢哋讓一句句子承載兩三項資訊而唔會聽落斷斷續續。用得乾淨，佢哋係「The student. She studied hard. She passed.」同「The student who studied hard passed.」之間嘅分別。用得粗心，佢哋引入含糊、逗號錯誤，以及 Writing 上面細微但累積嘅分數下降。

點解呢樣嘢喺 TOEFL iBT 2026 好重要

TOEFL iBT 2026 嘅 Read an Academic Passage 文本充滿關係子句。一句學術句子往往喺佢嘅主要動詞裏面嵌套兩三個關係子句。如果你誤讀一個關係子句修飾邊個名詞，你就誤讀成句句子——而推論同細節模式即刻懲罰嗰個。句子簡化練習本質上係一個關係子句黐附測試：邊個釋義保留咗原本嘅層次？

喺 Writing 度，關係子句係強勁回應有效咁打包資訊嘅方法。一個用咗兩個放得啱位嘅 who 或者 which 子句嘅 130 字 Academic Discussion 回應，聽落比同樣嘅回應用斷斷續續嘅短句寫更加豐富。難處係誤用嘅 that / which 逗號可以完全改變意思——而評分員會留意到。

喺 Speaking 度，口語關係子句可以鬆啲而唔受罰，但係完全排除佢哋會令你嘅回應聽落好似一張清單。每個回應一個受控嘅關係子句示意文法範圍。

喺 How Do I Solve Vocabulary-in-Context Questions on TOEFL 2026 Reading? 度，周圍嘅子句——往往係一個關係子句——正正係畀你脈絡提示嘅嘢。誤讀個黐附係詞彙題答錯嘅一個隱藏原因。

陷阱

五個關係子句問題佔咗考試日大部分傷害。

That 對 which（限制性對非限制性）。 一個限制性子句識別係邊一個——冇佢，句子就講唔通。一個非限制性子句添加額外資訊——冇佢句子都仍然行得通。喺正式美式英文裏面，that 係限制性（冇逗號），which 係非限制性（有逗號）。「The book that I borrowed is overdue」識別係邊本書。「The book, which I borrowed last week, is overdue」假設你已經知道係邊本書，並添加一個旁注。將佢哋混淆會改變意思。

逗號位置。 關係子句裏面一個錯置嘅逗號比學習者意識到嘅更嚴重。「My brother who lives in Berlin is a doctor」（冇逗號）暗示你有多個兄弟而你喺度識別其中一個。「My brother, who lives in Berlin, is a doctor」（有逗號）暗示你得一個兄弟而你喺度添加額外資訊。喺 Reading 度，呢啲逗號係識別對描述嘅提示。

Who 對 whom。 Who 係關係子句嘅主語；whom 係賓語。「The professor who teaches the course」——who 喺度做緊教學。「The professor whom we met yesterday」——whom 係 met 嘅賓語。口語英文已經大致掉走 whom，但係佢仍然喺 Reading 文章裏面出現，亦有時係 Read an Academic Passage 之下句子簡化練習嘅正確答案。喺時間壓力下寫錯佢無害；讀錯佢就會失分。

Whose。 Whose 顯示所有關係，人同物都適用。「The author whose book won the prize」（人）。「The theory whose implications surprised everyone」（物）。好多學習者用尷尬嘅迂迴說法例如「the theory of which the implications」嚟代替 whose——文法上冇問題，但更難讀而且好少需要。

漏咗關係代詞。 喺非正式英文裏面，賓語關係代詞往往被掉走：「The book I borrowed is overdue」（而唔係「The book that I borrowed」）。呢個喺 Writing 裏面可以接受，但係主語關係代詞唔可以掉走：「The book that is on the table」唔可以變成「The book is on the table」而唔完全改變意思。將主語對賓語嘅掉走搞混，係 Write for an Academic Discussion 裏面一個經常出現嘅漏洞。

句子層面對子句層面嘅 which。 用 which 嚟指成個前一句句子——「The professor extended the deadline, which made everyone happy」——喺口語英文裏面常見，但喺正式 Writing 裏面被認為鬆散。較安全嘅做法係畀 which 一個清晰嘅名詞先行詞：「The professor extended the deadline — a decision that made everyone happy.」

錯 / 較好 / 點解

邊度會出現

Read an Academic Passage 嘅句子簡化模式。 四個答案選項釋義一個複雜嘅原文。其中三個微妙噉重新洗牌邊個子句修飾邊個名詞。正確答案保留原本嘅關係子句黐附。細心讀 that、which 同 who，就係成個技巧。

Write for an Academic Discussion。 總結一個學術論點通常需要一個關係子句：「The professor described a method that…」或者「The reading mentioned a theory which…」。揀啱代詞同啱嘅逗號模式示意理解。

Academic Discussion。 強勁回應會提及之前嘅同學：「Emma's argument, which focuses on cost…」或者「Carlos's example, who works at a tech firm…」等等——who 指 Carlos，唔係佢嘅例子。誤黐關係代詞係一個細微但顯眼嘅甩轆。

Take an Interview。 口語回應容忍鬆散嘅 which 子句，但係一個自信嘅 whose 或者 who 顯示範圍。

快速修正

三個快速檢查捕捉到幾乎每一個關係子句錯誤。

第一，決定個子句係識別性定描述性。如果你可以刪除個子句而主句仍然講得通、又冇失去必要嘅識別，個子句就係描述性——用 which（人就用 who）加逗號。如果刪除個子句令個名詞喺脈絡裏面無法識別，個子句就係識別性——用 that（人就用 who）冇逗號。

第二，檢查邊個喺度做緊關係動詞嘅動作。如果被描述嘅名詞喺度做緊個動作，用主語形式：人用 who，物用 that 或者 which。如果被描述嘅名詞喺度接收個動作，你可以用賓語形式（或者完全掉走佢）：whom、that、which，或者零。

第三，避免喺同一個名詞上面堆疊兩個關係子句。如果你發現自己喺度寫「The book that I borrowed which is overdue is on the table」，將佢拆開：「The book that I borrowed is on the table, and it is overdue.」兩句短句比一句超載嘅句子讀落更好。

小練習

1. 按需要加或者刪逗號：The professor who teaches advanced statistics is famous in her field.（假設寫作者得一位統計學教授。）
2. 揀 that 或者 which：The lecture (that / which) we attended yesterday was the most useful one this semester.
3. 修正代詞：The author which wrote the book is giving a lecture next week.
4. 將其中一個關係子句簡化成一個短語：The library that is on the corner that I visit often is small.
5. 用 whose 替換尷尬嘅迂迴說法：The article, of which the conclusion was controversial, sparked debate.

可能嘅改良版本：(1) The professor, who teaches advanced statistics, is famous in her field.（用逗號，因為佢係唯一一位嗰種教授）。(2) The lecture that we attended yesterday was the most useful one this semester.（限制性）。(3) The author who wrote the book is giving a lecture next week. (4) The library on the corner, which I visit often, is small. (5) The article, whose conclusion was controversial, sparked debate.

提交前要檢查啲咩

喺你最後嘅六十秒，掃描你回應裏面每一個 that、which、who、whom 同 whose。對每一個，問下：呢個子句係識別緊我講緊邊個名詞（限制性，冇逗號），定係添加額外資訊（非限制性，有逗號）？檢查 who 指一個人而 which 指一件物——將兩者搞混係一個常見嘅低級甩轆。確保冇句子喺同一個名詞上面堆疊兩個關係子句；如果有，將佢拆開。一個乾淨嘅關係子句層令 Writing 聽落有層次同受控——正正係評分員獎勵嘅嗰種質感。