引导词并非总是可见的——英语在三种位置允许省略：宾语从句省 that（I think (that)…，真题里最普遍）、定语从句的关系词充当宾语时可省（the book (that) I read）、条件从句省 if 后倒装（Had I known…）。看不见引导词的从句，正是断句错误的重灾区。
英语六级真题里省略引导词的从句共 2461 处实例，覆盖 3 类从句；本页按从句类型分节，精选 45 句真题例句（出自 16 套真题卷，句长 8–58 词）。 每节先给该类型的实例计数与所属从句族入口，再逐句给出例句：高亮从句在原句中的位置，标注它在句中的功能与嵌套层级，附中文翻译、逐句解析与出处试卷； 点句卡末尾的「本句详情」可看结构树逐层拆解、成分与时态标注、考点讲解与真题高频词。
判断要点 动词后紧跟一个完整主谓结构，多半是省略 that 的宾语从句；名词后紧跟"主语 + 动词"且动词缺宾语，是省略关系词的定语从句；句首见到 Had / Were / Should + 主语的倒装，还原成 if 条件句理解。
本页精选的 45 句真题例句已由懒笔记排版为 A4 打印版 PDF，可免费下载，PDF 内的真题出处链接均可点击。
What does the speaker say the researchers have to wait and see?
演讲者说，研究人员必须等待并观察什么？
从 "say" 的语义配价看，"say" 后的内容整体是其动词宾语；该内容以特殊疑问结构呈现，疑问词 "What" 从 "see" 的宾语位置前置，因此此宾语从句的 evidence 必须覆盖句首的 "What" 以及其后的嵌入分句。这里的零引导指 "that" 未出现，并不表示从句内部没有疑问结构。
She said the aim was to really make sure that the transition from the driver to the vehicle is done in a safe way, so we can take into consideration the driver's state, and so we do not give control to a driver who is under pressure of fatigue, stress, anxiety, and so on.
她表示，这样做的目的是确保驾驶员将控制权交还给车辆的过程真正安全可靠。这样一来，我们就能考虑驾驶员当时的状态，避免将控制权交给处于疲劳、压力、焦虑等状态下的驾驶员。
该完整分句整体作“said”的动词宾语，相当于“She said that the aim was...”。其本层主干是“the aim was...”，后续不定式说明目标内容，两个“so”分句表示由安全完成控制权转移而产生的结果。
Hale wasn't just a writer, she was also a fierce social advocate, and she was particularly obsessed with an ideal New England, which she associated with abundant Thanksgiving meals that she claimed had "a deep moral influence."
黑尔不仅仅是一位作家，她还是一位激进的社会倡导者，而且她尤其痴迷于一个理想中的新英格兰地区，她将其与丰盛的感恩节晚餐联系在一起，她声称这些晚餐具有“深远的道德影响”。
宾语从句,作 "claimed" 的宾语,引导词 "that" 被省略。主语为省略的关系代词(指代 "meals"),谓语 "had",宾语 "a deep moral influence"。
She says many people she knows assume she travels for work, but in reality her international destinations are largely up to her, and driven by cost.
她说，她认识的许多人都以为她是因工作需要而出行，但实际上，她的国际旅行目的地大多由她自己决定，主要取决于费用。
该完整分句整体作“says”的动词宾语，表示她所说的内容。引导词“that”被省略；其内部的“she knows”修饰“many people”，并且“she travels for work”又作“assume”的宾语。
Dr. Egermann claims introducing children to a variety of musical styles is the key to fostering good taste in later life.
埃格尔曼博士认为，让孩子接触多种音乐风格，是培养他们日后良好品味的关键。
该完整分句整体作动词“claims”的宾语，说明 Dr. Egermann 声称的内容。“that”被省略；从句主语是“introducing children to a variety of musical styles”，系动词是“is”，表语是“the key to fostering good taste in later life”。
Agency spokesman Cassell says the FDA believes their recommendations will increase confidence, not uncertainty.
该机构发言人卡塞尔表示，美国食品药品监督管理局认为，他们的建议将增强信心，而不是加剧不确定性。
该完整分句整体作"says"的动词宾语。动词"says"后没有出现that，但"the FDA believes ..."在语义和结构上补足了说话内容，因此属于零引导的宾语从句。
But my research suggests this crisis had another underlying cause—that some people in the banking sector were playing or "gaming" the system for their own financial gain.
但我的研究表明，这场危机还有另一个深层原因——银行业的一些人为了谋取个人经济利益，操纵或“钻”制度的空子。
该分句整体作动词 "suggests" 的宾语，可理解为 "suggests (that) this crisis had another underlying cause..."。连接词 that 被省略；破折号后的内容进一步说明 "another underlying cause" 的具体内容。
In Nigeria alone experts estimate people spend $13 billion every year on fuel for toxic, polluting generators.
据专家估计，仅在尼日利亚，人们每年就要花费130亿美元购买燃料，用于驱动那些有毒且污染环境的发电机。
该分句整体作动词“estimate”的宾语，回答“experts estimate what?”。这里省略了that，完整形式可理解为“experts estimate that people spend ...”；从句内部主语是“people”，谓语是“spend”。
That above-mentioned study also recommends you space out your vacations evenly instead of using up all of your days at once.
上述研究还建议，应该把假期均匀地分散开来，而不是一次性用完所有假期天数。
该完整分句整体作动词 "recommends" 的宾语，回答“建议什么”这一问题。其前省略了宾语从句引导词 "that"，内部主干为 "you space out your vacations evenly"。
Contrary to the perception that he works under a mango tree in a tropical haven, Adams says the reality of this life means that he often ends up staying in more western style places in globalised cities—ones that are sure to have air conditioning and a decent connection—rather than exotic beachfront cafés.
与人们以为他在热带天堂的芒果树下工作的印象相反，亚当斯表示，这种生活的现实是，他最终往往会住在全球化城市中更具西方风格的地方——那里肯定有空调，网络连接也足够稳定——而不是待在充满异域风情的海滨咖啡馆里。
该完整分句位于动词 "says" 之后，整体充当 "says" 的宾语。这里没有显式的 that，可理解为 "Adams says (that) the reality ..."；从句内部的 "means" 又引出下一层宾语从句。
"Children have an openness to new music, and this means parents have an important role to play in developing the musical preferences of their kids," he said.
他说：“孩子们对新音乐持开放态度，这意味着父母在培养孩子的音乐偏好方面发挥着重要作用。”
该完整分句位于及物动词"means"之后，整体说明"this means"所意味着的内容，因此是动词宾语从句。引导词"that"被省略；从句内部主语是"parents"，谓语是"have"。
One 9-year-long study published in Psychosomatic Medicine suggests not taking at least one vacation a year may increase your risk of mortality due to heart disease.
《心身医学》发表的一项为期9年的研究表明，每年至少不休一次假可能会增加因心脏病死亡的风险。
该完整分句整体作动词"suggests"的宾语，说明研究所提示的具体内容。分句主语是动名词短语"not taking at least one vacation a year"，谓语是"may increase"；这里的宾语从句省略了可补出的连词"that"。
They claim artists can use copyrighted materials just as teachers do.
他们声称，艺术家可以像教师一样使用受版权保护的材料。
该分句整体作动词“claim”的宾语，表示“他们声称的内容”。“claim”后省略了宾语从句引导词“that”，从句本身有完整主语“artists”和谓语“can use”。
A computer model developed by planetary scientist Xi Zhang and colleagues shows the haze of tiny droplets in the upper atmosphere is likely scattering light from the Sun, preventing heat from reaching the planet below.
行星科学家张曦及其同事开发的一项计算机模型显示，高层大气中由微小液滴形成的霾很可能正在散射来自太阳的光线，从而阻止热量抵达下方的行星。
该分句整体作动词 "shows" 的宾语，说明模型显示的具体内容。引导词 that 被省略；从句主语是 "the haze of tiny droplets in the upper atmosphere"，谓语核心是 "is likely scattering"，后接宾语 "light from the Sun"。
What does the woman suggest the man do?
这位女士建议这名男子做什么？
"the man do" 整体充当主句动词 "suggest" 的宾语，表示建议的具体内容，可还原为 "that the man do"。从句省略了连接词 "that"；在 "suggest" 表示建议的结构中，谓语使用虚拟语气原形 "do"。前置的 "What" 对应 "do" 的宾语空位，因此从句在表层呈现为 "the man do"。
But nomads like Adams say that while they are aware of this privilege, they believe living this way elevates what they're able to offer, by giving them a broader perspective on what they're building, writing, or designing and expanding their world view.
但像亚当斯这样的游牧者表示，尽管他们意识到自己享有这种特权，却认为这样的生活方式能提升他们所能提供的价值，因为它让他们对自己正在构建、创作或设计的事物拥有更广阔的视角，并拓展了他们的世界观。
该从句省略了“that”，整体作“believe”的宾语；其主干是“living this way elevates what...”，其中“living this way”是动名词短语作主语，不是主语从句。
The first thing a typical traveller possibly does after arriving at a city is search for information online about its popular tourist attractions.
一般旅行者抵达一座城市后，可能做的第一件事就是上网查找有关当地热门旅游景点的信息。
该分句紧跟先行词"thing"并限定其所指。关系代词被省略，可补为"that"；补出的关系代词在"does"后充当宾语，因此从句内部存在宾语缺口，属于限制性定语从句。
Because of that, there's no perfect formula that works for everyone, but there are still a few things everyone can try to shoot for.
正因为如此，并不存在适用于所有人的完美方法，但每个人仍然可以尝试朝着几个目标努力。
该从句修饰并限定先行词 "things"。关系词被省略，完整意义相当于 "things that everyone can try to shoot for"；省略的关系词在 "shoot for" 中充当介词 "for" 的宾语。
According to experts, the age a person learns to manage finance responsibly determines the way they handle money thereafter.
专家认为，一个人何时学会负责任地管理财务，决定了他此后处理金钱的方式。
该分句修饰先行词"the age"，说明具体是哪一个年龄。其完整形式可补为"the age at which a person learns to manage finance responsibly"；省略的是介词加关系副词短语"at which"，但在题定枚举中只能以"零引导"表示该零形式关系结构。
But these challenges can often provide an opportunity for nomads to see a side of a city they may not have if they were staying in a luxury hotel for a long weekend.
不过，这些挑战往往也能让数字游民有机会看到城市的另一面——如果他们只是住在豪华酒店里度过一个长周末，或许就不会有这样的体验。
该分句修饰并限定先行词 "a side of a city"，关系词在从句中作动词 "have" 后所省略的宾语。原句中的 "may not have" 是情态动词加完成式助动词，过去分词 "seen" 也被省略，可理解为 "a side of a city (that) they may not have seen"。该定语从句的边界为 "they may not have"；后面的 if 条件从句不属于定语从句本层，而是嵌套在省略的 "have seen" 结构中的条件状语从句。
For example, in Romania, the average amount of personal space people said they would prefer from a stranger was more than 4 feet, whereas in Argentina it was roughly half that.
例如，在罗马尼亚，人们表示自己希望与陌生人保持的个人空间平均超过 4 英尺，而在阿根廷，这一距离大约只有一半。
该从句紧跟"personal space"，限定具体是哪一种个人空间。关系词被省略，原本可理解为"personal space that people said they would prefer from a stranger"；省略的关系词在"prefer"后充当宾语。
I've had many moments where I sit and think about all the things I wish I could have done differently.
我有过很多时刻，在那些时刻我坐着思考所有我希望我本可以做得不同的事情。
这是修饰先行词 "things" 的限制性定语从句,关系代词 that/which 作宾语被省略(零引导)。完整形式为 "all the things (that) I wish I could have done differently",其中关系词在深层作 "done" 的宾语。
It's a simple, yet profound change in perception, and what I love about it is the power it has to instantly shift us up a gear.
这是一种简单却深刻的观念转变，并且我喜欢它的一点是它拥有的能立即让我们提升一个档次的力量。
这是限制性定语从句,修饰先行词"the power",关系代词that/which作"has"的宾语被省略(零引导)。完整形式为"the power (that/which) it has",从句内部"it"指代前文的"change in perception"。
On top of all this, there is no hard evidence such a deed ever existed, despite the fact that deed records in Athens go back many decades before Jackson's death in 1876 and that it was supposed to have existed in 1890 in the archives according to the original anonymous news reporter who claims to have seen it.
除此之外，没有确凿证据表明这样的契约曾经存在过，尽管事实上雅典的契约记录可以追溯到1876年杰克逊去世前的几十年，并且根据声称见过该契约的最初匿名新闻记者的说法，它本应在1890年存在于档案中。
限制性定语从句,修饰先行词 "such a deed"。关系代词 that 被省略(零引导),因为它在从句中作主语时通常不省略,但此处 "such a deed" 与 "ever existed" 的紧密衔接表明这是省略了关系代词作主语的特殊用法,或者理解为 "evidence that such a deed ever existed" 整体构成同位语关系。经仔细分析,此处 "such a deed ever existed" 应理解为对 "evidence" 的内容说明,即同位语从句,省略了引导词 that。
It's a product he believes could help solve future global food crises resulting from shrinking amounts of land available for growing meat the old-fashioned way.
这是一种他认为有助于解决未来全球粮食危机的产品，这种危机源于以传统方式养殖肉类可用的土地数量不断减少。
该从句修饰先行词 "a product",关系代词(that/which)在从句中充当主语但被省略。从句主干为 "(that/which) could help solve future global food crises","he believes" 是插入语,不属于定语从句结构本身。
W: One mistake people make is to limit communication only to their bosses.
人们常犯的一个错误，是把沟通对象局限在自己的上司。
这是限制性定语从句，修饰先行词"mistake"。关系词被省略，"people"是从句主语，"make"后缺少宾语，省略的关系词在从句中充当"make"的宾语；可还原为"the mistake that people make"。
If you have 14 days of paid leave, that's almost three separate 8-day vacations you can use to split your year into thirds.
如果你有 14 天带薪休假，几乎可以安排成三个为期 8 天的假期，把一年分成三个阶段。
该分句位于名词 "vacations" 之后，实际可还原为 "vacations (that) you can use to split your year into thirds"。关系词省略，并在从句中充当 "use" 的宾语；该从句限定是哪一些假期，因此是限制性定语从句。
Many people, myself included, have multiple areas of life they would like to improve.
包括我在内，许多人都希望改善生活中的多个方面。
该从句位于名词短语 "areas of life" 之后，限制说明是哪些生活领域。关系词在 "improve" 后作宾语但被省略，可还原为 "areas of life that they would like to improve"，因此属于限制性定语从句。
Not only are many artists furious at the possible copyright violations of AI art, but they have also been frustrated by how AI tools are able to sidestep the labor and art processes they are required to go through.
许多艺术家不仅对人工智能艺术可能侵犯版权感到愤怒，也因人工智能工具能够绕过他们必须经历的劳动和创作过程而深感挫败。
该分句修饰先行词 "processes"，限定艺术家必须经历的流程。关系代词被省略，可补为 "processes that they are required to go through"；关系代词在短语动词 "go through" 中充当宾语。
In the Central Pacific of Costa Rica, the 330-hectare National Wildlife Refuge Baru looks nothing like the cattle ranch it was before 1987, when Jack Ewing decided to turn this large estate into an ecotourism destination.
在哥斯达黎加中太平洋地区，占地330公顷的巴鲁国家野生动物保护区如今已与1987年以前的模样大相径庭。那时，杰克·尤因决定将这片大型地产改造成一处生态旅游目的地。
该从句修饰先行词 "the cattle ranch"，可还原为 "the cattle ranch that it was before 1987"。关系词被省略，并在从句中充当系动词 "was" 后的表语，因此属于限制性定语从句；其边界止于 "1987"，不包括后面的非限制性定语从句。
"The habits of mind which influence the ways children approach complex problems and decisions, including financial ones, are largely determined in the first few years of life," says Dr David Whitebread, the co-author of the study.
“影响儿童处理复杂问题和作出决策（包括财务决策）方式的思维习惯，很大程度上在生命最初几年就已形成，”该研究的共同作者大卫·怀特布雷德博士说。
该分句修饰先行词“ways”，完整形式可理解为“the ways that children approach complex problems and decisions”。关系词在从句中作“approach”的宾语并被省略，因此属于零引导的限制性定语从句。
Those are just a few of the goals I find desirable, and you probably have a long list yourself.
这些只是我认为值得追求的几个目标，而你自己可能也有一长串目标。
这是限制性定语从句，修饰前面的名词 "goals"。关系词被省略；在从句的 "I find __ desirable" 结构中，先行词 "goals" 充当 "find" 的宾语，"desirable" 是宾语补足语。
Thus, had he owned some land in Athens itself, including the land the tree sat on, presumably he would have sold it to raise funds or otherwise had it taken as well.
因此，如果他在雅典本身拥有一些土地，包括那棵树所在的土地，想必他会卖掉它来筹集资金，否则也会让它被夺走。
省略 if 的倒装条件从句,通过 "had he owned" 的倒装结构体现,表达与过去事实相反的假设条件,引导整个虚拟条件句
The average male creative arts students, indeed, apparently earn much less than they would, had they simply never gone to university.
普通男性创意艺术学生，确实，显然赚得远比他们本应赚的少，如果他们根本没有上过大学的话。
虚拟条件从句，采用倒装省略"if"的形式（"had they gone"倒装自"if they had gone"），表示与过去事实相反的假设条件"如果他们从未上过大学"。此从句为主句中的"would"提供虚拟条件，与主句中的"would earn"构成完整的虚拟语气结构。
In regularly reflecting on the things in his life he is grateful for, Defoe's Crusoe believes that he becomes a far better person than he would have been had he remained in the society from which he originally set out on his voyage.
在定期反思他生活中所感激的事物时，笛福笔下的鲁滨逊认为，他成为了一个比如果他留在他最初出发航行的那个社会中原本会成为的人要好得多的人。
"had he remained..." 是省略 if 的倒装条件句，相当于 "if he had remained in the society..."，为前面的 "he would have been" 提供虚拟条件，因此属于条件状语从句。
Had the bell towers' wooden frames burned down, the heavy bells would have crashed down.
如果钟楼的木制框架烧毁了，沉重的钟就会坠落。
这是一个省略 if 的倒装条件状语从句，表达与过去事实相反的假设条件。原形式为 "If the bell towers' wooden frames had burned down"，通过将助动词 "had" 提前至句首、省略 "if" 形成倒装结构。从句使用过去完成时 "had burned down"，符合虚拟语气条件从句的时态要求。该从句在逻辑上为主句提供假设前提。
Experts believe it is all about the age you learn how to spend responsibly.
专家认为，关键在于你从多大年纪开始学会理性消费。
该分句表达"在你学会如何负责任地花钱的那个年龄"中的时间关系，修饰"the age"所表示的时间点。句中省略了与"age"搭配的介词"at"，可理解为"at the age [at which/when] you learn how to spend responsibly"。它不是由关系词零引导的定语从句，也不是倒装条件句；在给定枚举中只能暂以"零引导(倒装条件)"标记其无显性引导词，但该枚举并不能准确描述此处的省略形式。
As well as giving you space, this time also acts as a buffer between events, which can be borrowed from, should you be held up in a prior meeting, allowing you to still get to the next one on time.
除了给你空间外，这段时间也充当事件之间的缓冲，如果你在之前的会议中被耽搁了，可以从中借用，让你仍然能够准时到达下一个会议。
"should you be held up in a prior meeting" 是省略 "if" 的倒装条件句，相当于 "if you should be held up in a prior meeting"，表示"如果你在前一个会议中被耽搁"。它作为条件状语从句，修饰主句中可借用缓冲时间的整个情况。
Had that trend continued, the gender wage gap would have been closed by 2017.
如果那种趋势继续下去，性别工资差距到2017年就会已经被消除。
这是一个省略if的倒装条件状语从句,完整形式为"If that trend had continued"。采用了虚拟语气的倒装结构:将助动词Had提前到主语that trend之前,省略连词if。从句表达与过去事实相反的假设条件,使用过去完成时(had continued)。该从句修饰主句,表示"如果那个趋势持续下去"的假设前提。
Those offers, should they materialize, would exclusively employ my client's image in the Middle East only.
那些提议，倘若它们成为现实，将只在中东地区独家使用我客户的形象。
省略 if 的倒装条件状语从句,完整形式为 "if they should materialize"。通过 "should + 主语 + 动词原形" 的倒装结构表达条件,插入主句主语和谓语之间,用逗号隔开。"they" 指代主句主语 "Those offers","materialize" 意为"实现、成为现实"。
It can serve as a source of inspiration, and as an ideal jumping-off point should a musician be hit with writer's block(文思枯竭).
它可以作为灵感的来源，并且如果音乐家遭遇文思枯竭，它可以作为理想的起点。
这是省略 if 的倒装条件状语从句,原形为 "if a musician should be hit with writer's block"。通过将助动词 "should" 提前形成倒装,省略了 if。从句修饰主句,表示在音乐家遭遇文思枯竭这一条件下,主句内容成立。
Should you find yourself on the receiving end of this kind of complaining, there's an ingenious way to shut it down—which is to agree with it, ardently.
如果你发现自己正处于这种抱怨的接收端，有一种巧妙的方法可以制止它——那就是热情地认同它。
虚拟条件句,省略 if 采用倒装结构 "Should + 主语 + 动词原形"(= If you should find...),表「如果你发现自己……」。从句对主句表条件关系,位于句首,用逗号与主句分隔。
Malpractice awards do drive up insurance premiums for doctors in high⁃risk specialties, and there is some evidence that doctors engage in "defensive medicine" by performing tests and treatments primarily to prove they are not negligent should they get sued.
医疗事故赔偿确实推高了高风险专科医生的保险保费，并且有一些证据表明，医生从事“防御性医疗”，主要通过进行检查和治疗来证明他们在被起诉时没有疏忽。
条件状语从句（倒装）：省略 "if"，助动词 "should" 提前（Should they get sued = If they should get sued），表示假设条件「万一他们被起诉」。从句主语 "they"（指代 doctors），谓语 "get sued"（被动语态）。修饰主句中 "prove they are not negligent" 这一行为发生的条件。
Should such imbalances continue, pessimists say, they could contribute to slower growth.
悲观主义者称，如果这种失衡持续下去，它们可能会导致更缓慢的增长。
这是一个省略if的倒装条件状语从句，原结构为"If such imbalances should continue"。将should提前构成倒装，表示"如果这种失衡继续下去"的假设条件。从句完整，含主语"such imbalances"和谓语"continue"。
It aims at allowing everyone to read books anytime they like.
它旨在允许每个人在他们喜欢的任何时候读书。
"anytime they like" 是省略 when 的时间状语从句，修饰 "read books"，表示 "在他们喜欢的任何时候"。anytime 在此为连词（= whenever），引导时间状语从句，when 被省略。从句 "they like" 结构完整（like 作不及物动词，表 "愿意"）。
英语六级真题中省略引导词的从句共标注出 2461 处实例，覆盖 3 类从句：省略引导词的宾语从句 1545 处、省略引导词的限制性定语从句 903 处、倒装条件状语从句（省略 if） 13 处。本页从中精选 45 句真题例句，出自 16 套真题卷，句长 8–58 词（平均 26 词），CEFR 等级构成为 C1 27 句、B2 12 句、B1 3 句、C2 3 句。每句以高亮标出从句在原句中的位置，标注它在句中的功能与嵌套层级，附中文翻译、逐句解析、出处试卷与卷面位置，并可进入单句详情页查看结构树逐层拆解。
关于省略引导词的从句在英语六级真题中的类型分布与判断方法，最常被问到的问题。
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