词根信息
struct — 建造、堆叠
核心含义
拉丁语 struere = to pile up, to build, to arrange。这个词根形态稳定，几乎不变体，是理解 IELTS 学术写作关键词的核心入口。
派生词网络
Tier 1 — 雅思高频核心
| 单词 | 拆解 | 字面义 | 实际义 |
|---|---|---|---|
| structure | struct(建造) + -ure(名词) | 建造出来的东西 | 结构、体系、建筑物 |
| construct | con-(一起) + struct(建造) | 建在一起 | 建造、构建 |
| instruct | in-(入) + struct(建造) | 把知识建进去 | 指示、教导 |
| destroy | de-(去除) + stroy(建造) | 把建好的拆掉 | 破坏、摧毁 |
Tier 2 — 重要扩展
| 单词 | 拆解 | 字面义 | 实际义 |
|---|---|---|---|
| obstruct | ob-(阻碍) + struct(建造) | 建东西挡住 | 阻塞、妨碍 |
| infrastructure | infra-(下面) + structure | 下面的建筑 | 基础设施 |
| instruction | instruct + -ion | 教导的内容 | 说明、指令、教学 |
| destruction | destroy + -tion | 破坏的行为 | 摧毁、破坏 |
| constructive | construct + -ive | 建设性的 | 有建设性的 |
| reconstruct | re-(重新) + construct | 重建 | 重建、复原 |
例句（IELTS 场景）
- structure — The essay lacks a clear structure, making the argument difficult to follow.
- 写作评分标准核心词：essay structure, sentence structure
- construct — A new railway is being constructed to connect the two cities.
- 写作 Task 1 地图题/Task 2 基础设施话题
- instruct — Participants were instructed to complete the survey within 30 minutes.
- 听力/阅读研究方法论：as instructed / follow instructions
- destroy — Deforestation destroys natural habitats and threatens biodiversity.
- 写作 Task 2 环境话题高频动词
- infrastructure — Investment in public infrastructure is essential for economic growth.
- 写作 Task 2 经济/城市话题核心词
- constructive — Constructive feedback helps students identify areas for improvement.
- 口语 Part 3 / 写作：constructive criticism / constructive dialogue
- obstruct — Parked vehicles obstruct the flow of traffic during peak hours.
- 写作描述问题：obstruct progress / justice / the view
前缀拆解公式
[前缀] + struct/stroy
con- 一起 + struct → construct 建造
in- 入 + struct → instruct 教导（把知识建进去）
de- 去除 + stroy → destroy 破坏（拆掉）
ob- 阻碍 + struct → obstruct 阻塞
infra- 下面 + structure → infrastructure 基础设施
re- 重新 + construct → reconstruct 重建
易混辨析
- construct vs build：construct 更正式，build 更通用；学术写作中 construct 多用（construct a theory / argument / model）
- instruct ≠ teach：instruct 是给出具体指令，teach 是传授知识
- destroy ≠ damage：destroy 是完全毁灭，damage 是部分损坏