一篇 Task 2 essay 裡，同一個概念出現 3-4 次很正常——問題是你每次都用同一個字，還是每次換一個。後者就是 Band 7 的 lexical range。
這篇是本系列的 MVP 參考篇——20 個 Task 2 高頻概念，每個給 4-6 個 Band 7 等級的 alternatives，並標註哪個 alternative 用在哪個情境。
使用方式
寫完 essay 草稿後，搜尋你最常用的字（important / problem / help / good / bad 是重災區），挑 1-2 個用下面的 bundle 換掉。不要 20 個全換——precision > density。
20 個 Bundles
1. important
| Alternative | 適用情境 | |-------------|----------| | significant | 學術語氣、統計意義 | | crucial | 關鍵、缺了不行 | | essential | 基本必要 | | vital | 維持運作必須 | | paramount | 最頂層（僅限唯一最重要項目） | | pivotal | 轉折點、決定性 |
Significant — Education plays a significant role in economic development.
Crucial — Early intervention is crucial to prevent long-term harm.
Paramount — Safety must be paramount in any medical procedure.
2. problem
| Alternative | 適用情境 | |-------------|----------| | issue | 中性、討論中的議題 | | challenge | 可克服的困難 | | obstacle | 阻擋進展的東西 | | drawback | 某方案的缺點 | | concern | 擔憂（偏軟） | | predicament | 困境（正式） |
Issue — This raises an important ethical issue.
Challenge — Climate change poses an unprecedented challenge.
Drawback — One drawback of remote work is social isolation.
3. help (verb)
| Alternative | 適用情境 | |-------------|----------| | assist | 正式 | | support | 持續給力量 | | facilitate | 讓某事更容易發生 | | contribute to | 部分促成 | | aid | 正式 / 醫療語境 | | foster | 培養（長期） |
Facilitate — Subsidies facilitate the adoption of renewable energy.
Foster — Small-group teaching fosters critical thinking.
4. change (noun/verb)
| Alternative | 適用情境 | |-------------|----------| | shift | 趨勢、方向改變 | | transformation | 大規模、深層 | | adjustment | 微調 | | modification | 技術性修改 | | transition | 從 A 狀態到 B 狀態 | | evolution | 漸進演變 |
Shift — There has been a noticeable shift toward plant-based diets.
Transition — The country's transition to a green economy took two decades.
5. make
| Alternative | 適用情境 | |-------------|----------| | produce | 生產實體物 | | create | 創造（抽象或實體） | | generate | 產生（電、收入、興趣） | | construct | 建造 / 建構論述 | | develop | 開發 | | establish | 建立（制度、關係） |
Generate — This policy would generate substantial tax revenue.
Establish — The law established clear guidelines for data privacy.
6. get
| Alternative | 適用情境 | |-------------|----------| | obtain | 正式取得 | | acquire | 獲得（技能、財產） | | receive | 被動收到 | | gain | 獲得（利益、經驗） | | secure | 努力取得（工作、合約） |
Acquire — Students acquire language skills more easily when young.
Secure — Graduates find it increasingly difficult to secure stable employment.
7. use (verb)
| Alternative | 適用情境 | |-------------|----------| | utilise | 正式 | | employ | 運用（方法、工具） | | apply | 應用（規則、知識） | | exploit | 開發利用（有時負面） | | harness | 駕馭（自然力、科技） |
Employ — Researchers employed a new statistical method.
Harness — We must harness renewable energy more effectively.
8. show
| Alternative | 適用情境 | |-------------|----------| | demonstrate | 清楚證明 | | reveal | 揭露（隱藏的） | | indicate | 暗示、指向 | | illustrate | 用例子說明 | | highlight | 強調出 | | suggest | 軟性指向 |
Demonstrate — The data demonstrate a clear correlation.
Indicate — Early results indicate that the programme is effective.
9. think (believe/argue)
| Alternative | 適用情境 | |-------------|----------| | believe | 一般信念 | | argue | 主張（有論點） | | maintain | 堅持主張 | | contend | 正式主張 | | hold | 持有觀點（正式） | | assert | 堅定宣稱 |
Maintain — Critics maintain that the policy has failed.
Contend — Proponents contend that early investment saves money later.
10. want
| Alternative | 適用情境 | |-------------|----------| | seek | 尋求 | | desire | 渴望（正式） | | aspire to | 立志 | | pursue | 追求（目標） | | strive for | 奮力爭取 |
Seek — Many young professionals seek better work-life balance.
Aspire to — Students aspire to study at top universities.
11. good
| Alternative | 適用情境 | |-------------|----------| | beneficial | 有益的（結果） | | favourable | 有利的（條件） | | positive | 正面（影響） | | advantageous | 有優勢 | | constructive | 建設性的（批評、討論） |
Beneficial — Regular exercise is beneficial for mental health.
Favourable — The report received a favourable response.
12. bad
| Alternative | 適用情境 | |-------------|----------| | detrimental | 有害（正式） | | harmful | 傷害 | | adverse | 負面（條件、效果） | | negative | 一般負面 | | damaging | 造成損害 |
Detrimental — Long working hours are detrimental to family life.
Adverse — The policy had several adverse consequences.
13. many
| Alternative | 適用情境 | |-------------|----------| | numerous | 數量多（正式） | | a significant number of | 具意義的數量 | | a large proportion of | 大比例 | | countless | 無數（略誇張） | | a wide range of | 多種類 |
Numerous — Numerous studies have confirmed this finding.
A significant number of — A significant number of graduates remain unemployed.
14. people
| Alternative | 適用情境 | |-------------|----------| | individuals | 個別的人 | | citizens | 公民（政治語境） | | the public | 公眾 | | society | 社會整體 | | members of the community | 社區成員 |
Individuals — Individuals who exercise regularly tend to live longer.
The public — The public is becoming more aware of environmental issues.
15. country
| Alternative | 適用情境 | |-------------|----------| | nation | 國家（正式） | | state | 國家（政治） | | society | 社會（文化語境） | | developed / developing nations | 已/開發中國家 |
Nation — Wealthy nations bear greater historical responsibility.
Developing nations — The challenge is particularly acute in developing nations.
16. solve
| Alternative | 適用情境 | |-------------|----------| | address | 處理（最廣用） | | tackle | 積極處理 | | resolve | 解決爭端 | | remedy | 補救（缺失） | | mitigate | 減輕（不完全解） |
Address — Policymakers must address the root causes.
Mitigate — Carbon taxes would mitigate the effects of climate change.
17. cause (verb)
| Alternative | 適用情境 | |-------------|----------| | lead to | 最常用 | | result in | 導致某結果 | | trigger | 觸發 | | give rise to | 引起（正式） | | contribute to | 部分促成 | | bring about | 帶來（變化） |
Give rise to — Urbanisation has given rise to new health challenges.
Trigger — The policy triggered widespread protests.
18. effect (noun)
| Alternative | 適用情境 | |-------------|----------| | impact | 影響（中性） | | consequence | 後果（通常負面） | | outcome | 結果 | | repercussion | 連帶後果 | | implication | 含義、後續影響 |
Impact — Social media has had a profound impact on politics.
Repercussion — The decision had unforeseen repercussions.
19. increase (verb)
| Alternative | 適用情境 | |-------------|----------| | rise | 上升 | | grow | 增長 | | expand | 擴張（規模） | | surge | 激增 | | climb | 攀升 | | soar | 飆升 |
Surge — Demand for electric vehicles has surged in recent years.
Expand — The industry is expected to expand considerably.
20. decrease (verb)
| Alternative | 適用情境 | |-------------|----------| | fall | 下降 | | decline | 衰退 | | drop | 掉落 | | diminish | 減少（正式） | | dwindle | 逐漸減少 | | plummet | 驟降 |
Decline — Birth rates have declined sharply since 2000.
Plummet — Share prices plummeted after the announcement.
怎麼把這份字庫用進考場
寫作前
花 2 天時間，每天選 5 個 bundle，朗讀句例三遍——不是背，是讓耳朵熟悉 collocation。
寫作中
草稿寫完，搜尋你最常用的字（good / important / problem 是 80% 考生的重災區）——每個都挑 2 處換掉（不是全部換）。
寫作後
對照字庫——你有沒有用錯情境？Crucial 用在不重要的事物上 = 扣分。精準 > 花俏。