读《金融时报》学英文写作：定语从句——从疫苗冷链设备学「从句里的动词」
你的定语从句，动词太少了
批改作文时我把学生的定语从句统计过一遍，动词几乎只有三种：which is good、which is important、which was built in 2015。
从句写对了，但它不干活——信息全在形容词里，一点事实都没有。
《金融时报》这篇 2020 年 12 月的报道写新冠疫苗冷链设备（超低温冷冻箱）争夺战，全篇 7 个定语从句，动词一个都不重复：讲原理用一般现在时，讲参数用 can，讲客观状态用被动。这篇文章是学「从句里的动词」最好的教材。
FT原文示范
Demand for ultra-cold storage freezers has spiked as governments and manufacturers prepare to ship Covid-19 vaccines around the world and along the so-called last mile to those most vulnerable to the disease.
A typical minus 80C freezer works through a cascade refrigeration system, which combines two independent compressors to reach lower temperatures.
The Luxembourg-based freezer producer has more than tripled its normal annual production of 500 to 1,000 units, recording massive demand for its 700L unit, used in laboratories and hospitals, which can store up to 280,000 vaccine doses.
Politicians, medical advisers and manufacturers have all stressed the practical hurdles in distributing BioNTech-Pfizer’s vaccine in particular, with UK prime minister Boris Johnson warning of “immense logistical challenges” in moving the vials, which are shipped in specially designed “pizza boxes”.
中文对照：
随着政府和制造商准备向世界各地运送新型冠状病毒肺炎疫苗，并完成所谓的最后一公里递送，让高危人群能够接种疫苗，对超低温冷冻箱的需求出现激增。
典型的零下80摄氏度冷冻箱采用级联制冷系统，该系统集合两台独立的压缩机以达到较低温度。
这家总部位于卢森堡的冷冻箱生产商已将500至1000台的正常年产量增加两倍多，其700升规格的冷冻箱眼下需求巨大，这些冷冻箱用于实验室和医院，可存储多达28万剂疫苗。
政界人士、医疗顾问和制造商都特别强调了分发疫苗的实际障碍，英国首相鲍里斯•约翰逊警告称，在运送疫苗小瓶方面存在”巨大的物流挑战”，这些小瓶运输时装在专门设计的”披萨盒”中。
技巧1：讲原理，从句动词用一般现在时
结构公式： [设备/系统名词], which [一般现在时动词短语]（工作原理）
FT例句：
A typical minus 80C freezer works through a cascade refrigeration system, which combines two independent compressors to reach lower temperatures.
主句已经用 works 交代了”靠什么工作”，从句不再重复，而是往下钻一层：combines two independent compressors（两台压缩机）、to reach lower temperatures（目的是降温）。恒常的原理、构成、用途，一律用一般现在时——这是在告诉读者”这不是某一次的事，这是它一直的样子”。
❌ 学生初版 The freezer works with a special system. The system is very good and it has two compressors.
✅ 升级版 A typical freezer works through a cascade system, which combines two independent compressors to reach lower temperatures.
💡 效果 学生版两句都在说”好”，没有任何事实；升级版把”两台独立压缩机”这个原理装进从句，一句顶两句，还顺手用 to reach 交代了目的。
考场模板：
[设备/机制], which [combines / works by / consists of / allows ... to do]- 例：The library runs on a smart booking system, which divides every seat into 30-minute slots to avoid queueing.
技巧2：讲参数，从句动词用 can
结构公式： [产品/设施名词], which can [动词] + up to / between ... and ...
FT例句：
…its 700L unit, used in laboratories and hospitals, which can store up to 280,000 vaccine doses.
…orders for ultra-cold freezers, which can achieve temperatures from minus 20C to minus 86C, had more than trebled in the last three months of the year.
Publicly available contracts show the UK government has spent close to £4m on ultra-cold freezers, which can cost between £3,000 and £12,000 each.
can 是这三句的共同点。它不说”这台机器储存了28万剂”，而是说”它能储存多达28万剂”——能力与参数区间，用 can 一次打包，数字立刻有了参照。
❌ 学生初版 Our canteen is big. It can take 800 students. It is very convenient.
✅ 升级版 The new canteen, which can seat up to 800 students at one sitting, opened last month.
💡 效果
which can + 动词 + up to + 数字 是参数句的标准写法。写校园设施、产品介绍、图表数据都能用；比 “It is big / it is convenient” 高一个信息层级。
考场模板：
[名词], which can [动词] up to [数字]／which can cost between [A] and [B]- 例：The mobile lab, which can test up to 500 samples between Monday and Friday, serves three districts.
技巧3：讲客观状态，从句动词用被动
结构公式： [名词], which are / is + V-ed + [方式、场所]
FT例句：
…in moving the vials, which are shipped in specially designed “pizza boxes”.
疫苗小瓶本身当然是人装的、人运的，但记者把执行者藏起来，从句只留”以什么方式运输”。读者关心的是状态和方式，不是谁动的手——这就是被动语态在从句里的价值。
❌ 学生初版 People put the vials in special boxes. Workers call these boxes pizza boxes.
✅ 升级版 The vials are moved in boxes that are known as “pizza boxes” — insulated containers that keep the vaccine at minus 70C.
💡 效果 被动从句让句子从”讲人做了什么”切换到”讲物件处于什么状态”。科普、流程、政策类作文里，这种切换能让文风立刻从口语跳到书面。
考场模板：
[名词], which are [shipped / stored / printed / known] + [方式/名称]- 例：The forms, which are submitted online before 31 March, are then reviewed by two teachers.
技巧4（组合技）：一句里两条时间线——主句讲变化，从句讲属性
FT例句：
Mr Tenney said orders for ultra-cold freezers, which can achieve temperatures from minus 20C to minus 86C, had more than trebled in the last three months of the year compared with pre-pandemic levels.
主句的动作 had more than trebled 是”过去某段时间里的变化”（时间轴），从句的 can achieve 是”设备一直具备的能力”（属性）。时间轴和属性可以同时出现在一句话里，各用各的时态——这正是学生最容易写混的地方：一旦句子里有时态变化，就慌了。
❌ 学生初版 The freezer can reach very low temperatures. Orders increased a lot in three months.
✅ 升级版 Orders for freezers, which can reach minus 86C, more than trebled in the final quarter of the year.
💡 效果 从句负责”设备是什么”，主句负责”发生了什么”，两条时间线互不干扰。写数据变化时，这个句式能让句子既有时效又有背景。
针对性练习建议
- 动词升级练习：从你最近一篇作文里找出 3 个
which is + 形容词的从句，把形容词换成”动词 + 事实”（原理用现在时、参数用 can、状态用被动）。 - 参数句练习：写一句你所在城市某个设施的介绍，要求包含
which can + 动词 + up to / between ... and ...。 - 双时间线练习：以”我们学校的操场”为主题写一句：从句讲它的属性（can hold / can be used），主句讲去年发生的一次变化。
厦门灯塔 · 专业英语作文逐句批改 | 微信 linstudio799 专注中高考/雅思写作 · 逐句精批 + 逻辑重构 + 母语级升级