词根信息
tract — 拉、拖
核心含义
拉丁语 trahere = to pull, to draw, to drag。这个根的派生词大多描述”力”的抽象化——把注意力拉过来、把部分抽出来、把事物拖在一起。
其中 treat- 是 tract 的法语变体,出现在 retreat, treat 中。
派生词网络
Tier 1 — 雅思高频核心
| 单词 | 拆解 | 字面义 | 实际义 |
|---|---|---|---|
| attract | at-(=ad,向) + tract(拉) | 拉向自己 | 吸引 |
| extract | ex-(出) + tract(拉) | 拉出来 | 提取、摘录 |
| abstract | abs-(离开) + tract(拉) | 从具体中拉出 | 抽象的、摘要 |
| contract | con-(一起) + tract(拉) | 拉到一起 | 合同、收缩 |
| distract | dis-(分开) + tract(拉) | 把注意力拉开 | 分散(注意力) |
Tier 2 — 重要扩展
| 单词 | 拆解 | 字面义 | 实际义 |
|---|---|---|---|
| subtract | sub-(下) + tract(拉) | 从下面拉走 | 减去、扣除 |
| retreat | re-(回) + treat(=tract) | 拉回去 | 撤退、退避 |
| tractor | tract(拉) + -or(物) | 拉东西的机器 | 拖拉机 |
| attractive | attract + -ive | 能吸引人的 | 有吸引力的 |
| distraction | distract + -ion | 注意力分散 | 分心、消遣 |
例句(IELTS 场景)
- attract — The government hopes to attract foreign investment through tax incentives.
- 写作 Task 2 经济话题:attract tourists / investment / attention
- extract — The process extracts valuable minerals from electronic waste.
- 阅读 Section 3 科技/环境话题
- abstract — Young children often struggle to understand abstract concepts.
- 写作/口语讨论教育:abstract thinking / abstract ideas
- contract — Both parties signed the contract after lengthy negotiations.
- 听力 Section 3/4 商业/法律场景
- distract — Mobile phones can distract students from their studies.
- 写作 Task 2 教育/科技话题高频
- subtract — If we subtract operating costs from total revenue, the net profit is approximately 15%.
- 写作 Task 1 数据描述
- retreat — The glacier has been retreating at an alarming rate due to global warming.
- 阅读 Section 3 环境科学
- attractive — Remote work has become an increasingly attractive option for employees.
- 写作/口语:an attractive alternative / proposition
前缀拆解公式
[前缀] + tract
at- 向 + tract → attract 吸引(拉过来)
ex- 出 + tract → extract 提取(拉出来)
abs- 离 + tract → abstract 抽象(从具体中拉出)
con- 一起 + tract → contract 合同(拉到一起 → 约束)
dis- 分开 + tract → distract 分散(拉开注意力)
sub- 下 + tract → subtract 减去(从下面拉走)
re- 回 + tract → retreat 撤退(拉回去)
易混辨析
- extract vs abstract:extract 是物理提取(extract oil),abstract 是概念抽象(abstract idea)
- contract 做名词 vs 动词:名词读 /ˈkɒntrækt/(合同),动词读 /kənˈtrækt/(收缩)
- distract vs interrupt:distract 是分散注意力(不一定打断),interrupt 是打断进程