词根信息
词根: und 来源: 拉丁语 unda(波浪) 变体: und- 关联词根: vent(来)
und — 水、波动、流动
核心含义
拉丁语 unda = wave(波浪)。水波的「溢出」和「起伏」引申出两条线:
- “溢出 → 过多” → abundant, abundance, redundant
- “波浪 → 涌入/淹没” → inundate, undulate
派生词网络
Tier 1 — 雅思高频核心
| 单词 | 拆解 | 字面义 | 实际义 |
|---|---|---|---|
| abundant | ab-(离开) + und(水) + -ant | 像水一样溢出 | 丰富的、充足的 |
| abundance | ab-(离开) + und(水) + -ance | 溢出的状态 | 大量、丰富 |
| redundant | re-(再) + und(水) + -ant | 反复溢出 → 多余 | 多余的、冗赘的、被裁员的 |
Tier 2 — 重要扩展
| 单词 | 拆解 | 字面义 | 实际义 |
|---|---|---|---|
| inundate | in-(入) + und(水) + -ate | 水涌入 | 淹没、使应接不暇 |
| undulate | und(水) + -ulate(动词) | 像波浪一样起伏 | 波动、起伏 |
例句(IELTS 场景)
- abundant — Abundant natural resources do not always lead to economic prosperity.
- 写作 Task 2 经济话题:abundant resources / evidence / opportunities
- abundance — The region has an abundance of renewable energy sources, such as wind and solar.
- 写作 Task 1 描述资源:an abundance of
- redundant — The opposite of “abundant” and a common IELTS vocabulary item.
- 写作:redundant workers / make something redundant / become redundant
- 阅读职场话题高频:被裁员、多余的步骤
- inundate — The company was inundated with applications after the job posting.
- 写作/阅读:be inundated with calls / complaints / applications
常见搭配速记
| 搭配 | 含义 | 场景 |
|---|---|---|
| an abundance of | 大量的 | 写作 Task 1 |
| abundant evidence | 充足的证据 | 写作 Task 2 |
| make someone redundant | 裁员 | 阅读职场话题 |
| be inundated with | 被…淹没/充斥着 | 写作/阅读 |
易混辨析
- abundant vs plentiful:abundant 更正式,学术写作首选;plentiful 偏口语
- redundant 在英式英语中常指”被裁员”(made redundant),美式多用 laid off
- abundance vs abundant:名词/形容词——There is an abundance of data / The data is abundant
相关词根
- vent(来)→ convenient — inundate 的语义近似”大量涌来”