表语从句考点专项练习-2026届高三英语一轮复习

表语从句 一、语法填空 1．No changes have taken place in the village. It remains it used to be. (用适当的词填空) 2．You are saying that everyone should be equal, and this is I agree. (用适当的词填空) 3．What took the dog a single weekend to learn is it can sit on the back of the bike in a dog carrier to travel the world. （用适当的词填空） 4．He didn’t come to the meeting yesterday. That was he had to take his brother to hospital. (用适当的词填空) 5．The best moment for the football star was he scored the goal. (用适当的词填空) 6．Tang poems are very nice. That’s more and more people are interested in them. (用适当的词填空) 7．He didn’t come to school this morning and that is he was ill.(用适当的词填空) 8．You think that your parents don’t care about you at all. That’s you are wrong. （用适当的词填空） 9．Li Ming is my friend that’s I have offered to help. (用适当的词填空) 10．The funniest moment was someone watching the race offered me a banana — a real treat for running gorilla! (用适当的词填空) 11．He is addicted to computer games, and that is he has to drop out of school. (用适当的词填空) 12．One idea is sleep helps us strengthen new memories. (用适当的词填空) 13．The problem is will lead the research team. (用适当的词填空) 14．The question is we can finish the experiment by Friday. (用适当的词填空) 15．You are saying that everyone should be equal, and this is I disagree. (用适当的词填空) 16．The reason why he was late for school was his bike broke down on the way. （用适当的词填空） 17．The reason he preferred city life is she can have easy access to places like shops and restaurants.   (用适当的词填空) 18．I’m afraid he’s more of a talker than a doer, which is he never finishes anything. 19．You are saying that everyone has already had equal rights, and this is I disagree. （用适当的词填空） 20．Listening carefully in class is you should do. （用适当的词填空） 21．The reason for her preference for city life is she can have easy access to shops. (用适当的词填空) 22．It seems though I am the first one here. (用适当的词填空) 23．The problem is we can trust to be in charge of such an important project. (用适当的词填空) 24．After all, fame and personal gain is they are after. (用适当的词填空) 25．Ten percent of life is what happens to you and ninety percent is you respond to it. (用适当的词填空) 26．The reason why I didn’t come is I was ill yesterday.(用适当的词填空) 27．To him, Wudang has now become a second home and martial arts and traditional Chinese culture are his “lifetime passion” settled.(用适当的词填空) 二、单项选择 28．The trouble is _________ we are short of tools. A．what B．that C．how D．why that 29．If a pencil is partly in a glass of water, it looks ____________it were broken. A．as though B．why C．how D．what 30．The reason why he failed is _________ he was too careless. A．because B．that C．for D．because of 31．The question is____________ he will work hard enough so that he can come back to us. A．that B．what C．whether D．why 32．I always read newspapers backwards because the back pages are ______ the sport is. A．that B．where C．how D．what 33．________ is special about the honey is ________ it is produced by the earliest species of Chinese bee. A．It ; that B．As; whether C．What; that D．Which; whether 34．My advice is _______ he _____ to go abroad for further education. A．that, chooses B．that, chose C．that, choose D．what, should choose 35．The fact is ______ I earned my passage by working as an unpaid hand, which ______ my appearance. A．that; accounts for B．\; accounts for C．how; give an explanation to D．\; give an explanation to 36．He finished writing his first novel last year, and we all think that is ______ his career really took off. A．where B．when C．how D．why 37．One reason for her preference for city life is ___________ she can have easy access to places like shops and restaurants. A．that B．how C．what D．why 38．Modesty is a kind of good quality, which is ______it takes to be your personal best. A．what B．where C．which D．when 39．—I drove to Zhuhai for the air show last week. —Is that ______ you had a few days off? A．why B．because C．where D．when 40．Go and get your coat. It’s 　　you left it. A．there B．where C．there where D．where there 41．You are saying perseverance is the ability to keep doing something in spite of obstacles and this is ____________I agree. A．how B．why C．which D．where 42．_______ really matters is _______ you do, you must do it well. A．What; what B．Whatever; whatever C．What; whatever D．Whatever; what 43．Young people are seeking excitement and challenges, and going where big companies are is ____ leads to so many old people being left alone in villages. A．where B．when C．what D．who 44．The famous player tried again and again after each failure. That’s _____ he succeeded at last. A．what B．when C．whether D．why 45．It was as though____________. A．forgotten our last meeting B．our last meeting was forgotten C．was our last meeting forgotten D．our last meeting forgot 46．That preserved historic village connected to downtown by a highway is ________ many office workers spend their weekends. A．what B．how C．where D．why 47．The reason why I burst into tears is I don’t want to part with my mother. A．that B．which C．/ D．because 48．What I learn about this violence is ________ it has caused at least three deaths. A．whether B．that C．what D．when 49．Things are not always ____________ they seem to be. A．though B．whether C．as D．that 50．The reason _____ he gave for his being late was ______ the traffic was held back by a car accident. A．why; that B．that; that C．which; whether D．why; because 51．You think it’s helpful to put children in a situation ________ they can see themselves differently, and this is ________ I agree. A．where; what B．which; what C．which; where D．where; where 52．______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him. A．'That; that; which B．What; that; what C．That; because; that D．What; because; which 三、完成句子 53．Another reason to use idioms is . 使用习语的另一个原因是它们简练。 54．我总是努力克服困难，那就是我总是在别人失败的事情上成功的原因。（表语从句） I always try to overcome difficulties. That is where others have failed. 55．野生动物在自然界中扮演着重要的角色，那就是我们应该增强对它们的保护意识的原因。(that is why...) Wild animals play an important part in nature; . 56．他是第一个完成作业的，这让老师感到很惊讶。（一句多译） He was , which surprised his teacher . = 57．The main reason for this is simply . 主要原因是我们不再需要它们了。 58． is that the customer would like to hear. 他们的意思是，他们没法给出客户想听到的估算。 59．我的建议是你应该去向他道歉。 My advice is to him. 60．这就是我想放弃这个机会的原因。 I wanted to give up this opportunity. 61．经验才是重要的 —— 年龄是次要的。 Experience is — age is of secondary importance. 62． his son had been caught cheating in the exams. 他的儿子考试作弊被抓住了, 这使他大为吃惊。 参考答案 题号 28 29 30 31 32 33 34 35 36 37 答案 B A B C B C C A B A 题号 38 39 40 41 42 43 44 45 46 47 答案 A A B D C C D B C A 题号 48 49 50 51 52 答案 B C B D B 1．what 考查表语从句。句意：这个村庄没有发生任何变化。它仍然和过去一样。句中“remains”是系动词，后面接的是一个表语从句，从句缺少表语，表示“样子、状态”，用连接代词what引导从句，意为“……的样子/情况”。故填what。 2．where 考查表语从句。句意：你说每个人都应该是平等的，这是我不同意的地方。“____ I agree”是表语从句，从句中谓语动词agree是不及物动词，后面不需要宾语，结合句意，表示“在……地方”，应用连接副词where作地点状语。故填where。 3．how 考查表语从句。句意：这只狗只用了一个周末就学会的是，它可以如何坐在自行车后座的狗笼里环游世界。is后为表语从句，结合语意，此处表示的是狗学会如何坐在自行车后座的狗笼里环游世界，所以空处应用how引导表语从句。故填how。 4．because 考查表语从句。句意：他昨天没有来开会。那是因为他得送他弟弟去医院。空格处引导的是表语从句，句子表示“那是因为他得送他弟弟去医院”，空格处用because表示“因为”，故填because。 5．when 考查表语从句。句意：这位足球明星最精彩的瞬间是他射门得分的时候。分析句子结构可知，was后为表语从句，从句中不缺主语或宾语，由前面的The best moment可知，表语从句中缺少“……的时候”，因此空格处用表示时间的引导词when，故填when。 6．why 考查表语从句。句意：唐诗很好。这就是为什么越来越多的人对它们感兴趣。空处引导表语从句，结合句意可知，应表示“为什么”，所以此处为连接副词为why引导。故填why。 7．because 考查表语从句。句意：他今天早上没来上学，那是因为他病了。空格处引导的是表语从句，从句中不缺主语或宾语，由He didn’t come to school this morning可知，空格处意为“因为”，因此用because引导表语从句，故填because。 8．where 考查表语从句。句意：你认为你的父母一点也不关心你。这就是你错的地方。引导表语从句，从句表示“……的地方”应用where。故填where。 9． and why 考查连词以及表语从句。句意：李明是我的朋友，这就是我主动提出帮忙的原因。第一空格处是连接两个并列句，结合句意，此处表示并列关系，应使用连词and；第二空格处是表语从句引导词，从句中不缺主语和宾语，但句意不完整，结合句意，从句缺少原因状语，应使用连接词why。故填①and ②why。 10．when 考查表语从句引导词。句意：最有趣的时刻是有人在观看比赛时给了我一根香蕉——对跑步的大猩猩来说真是一种享受！此处引导表语从句，连接词在从句中作时间状语，应用连接副词when引导。故填when。 11．why 考查表语从句。句意：他沉迷于电脑游戏，这就是他不得不辍学的原因。分析句子结构可知，此处为连接词引导的表语从句，从句中不缺主语和宾语，但句意不完整，根据句意，前文“He is addicted to computer games”是“he has to drop out of school”的原因，因此应用连接副词“why”引导表语从句，强调结果背后的原因。故填why。 12．that 考查表语从句。句意：有个想法是，睡觉能够帮助增强记忆力。分析句子结构可知，is为谓语动词，后文从句为表语从句；从句中不缺主、宾、表和定语，且句意完整，故需要填从属连词that起连接作用。故填that。 13．who 考查表语从句。句意：问题是谁来领导这个研究小组。空处引导表语从句，从句缺少主语，指人，需用连接代词who引导。故填who。 14．whether/how 考查表语从句。句意：问题是我们能否在星期五之前完成实验。分析句意可知，空格处需要使用连词引导表语从句。主语为the question“问题”，即“是否或者怎样能在周五前完成实验还是个问题”，故表语从句不缺成分，需要使用意为“是否/怎样”的连词whether或者how。故填whether/how。 15．where 考查连接词。句意：你说每个人都应该平等，而这正是我不同意的地方。分析句子可知，设空处引导表语从句，从句中“disagree”是不及物动词，不缺宾语，结合句意“不同意的地方”，需用连接词“where”在从句中作地点状语，符合语境。故填where。 16．that 考查表语从句。句意：他上学迟到的原因是他的自行车在路上坏了。“The reason why...is/was that...”是一个固定句型，意为“……的原因是……”，“why he was late for school”是定语从句，修饰先行词“The reason”，“that his bike broke down on the way”是表语从句，说明原因的具体内容。在这个句子中，表语从句“his bike broke down on the way”结构和意义都完整，所以用“that”引导，“that”在表语从句中只起连接作用，不充当任何成分。故填that。 17． why that 考查定语从句和表语从句。句意：他之所以喜欢城市生活，是因为她可以很方便地去商店和餐馆等地方。第一个空 “the reason” 后接定语从句，先行词为the reason，从句中缺状语，应用关系副词why 引导，第二空引导表语从句，从句句意完整不缺少任何成分，应用没有任何意义只起连接作用的that引导。故填why；that。 18．why 考查副词。句意：恐怕他更像一个空谈家而不是实干家，这就是他一事无成的原因。表示“为什么”，故填why。 19．where 考查表语从句。句意：你是说每个人都有平等的权利，而这正是我不同意的地方。空处引导表语，从句缺少地点状语应用where。故填where。 20．what 考查表语从句。句意：在课堂上认真听讲是你应该做的。设空处引导的是表语从句，引导词在从句中作宾语，表示“做什么”用what。故填what。 21．that 考查名词性从句。句意：她喜欢城市生活的原因是她可以方便地去商店。分析句子结构可知，本空引导表语从句，表语从句成分和意义都完整，所以无任何意义只起连接作用的that引导。故填that。 22．as 考查连接词。句意：好像我是第一个到这儿的。分析句子结构可知，seem为系动词，后面接 as though，表示“好像”，引导表语从句。故填as。 23．who/whom 考查表语从句。句意：问题是我们能相信谁可以负责这么重要的项目。根据is可知，空处引导表语从句。从句we can trust to be in charge of such an important project中缺少trust的宾语，且指的是人，应用连接代词who或者whom引导。故填who/whom。 24．what 考查表语从句。句意：毕竟，名誉和个人利益是他们所追求的。空处引导名词性从句作is的表语，表语从句中after后缺少宾语，结合“fame and personal gain”可知，宾语指物，应用连接代词what作引导词。故填what。 25．how 考查表语从句。句意：生活的百分之十是发生在你身上的事，百分之九十是你如何应对它。空处引导名词性从句作表语，结合句意可知，从句中缺少方式状语，空处需表达“如何，怎样”，应用连接副词how作引导词。故填how。 26．that 考查表语从句。句意：我没来的原因是我昨天病了。分析句子可知，此处为连接词that引导的表语从句，that在从句中不充当成分，无实意。故填that。 27．where 考查表语从句。句意：对他来说，武当如今已成为第二故乡，而武术与中国传统文化则是他“毕生热爱”的寄托之处。这里考查表语从句，从句中“his ‘lifetime passion’ settled”主谓结构完整，但缺少地点状语，需用连接副词where引导。故填where。 28．B 考查表语从句。句意：问题是我们缺乏工具。分析句子可知，空处引导名词性从句作is的表语，从句的成分和语义均完整，应用连接词that作引导词。故选B。 29．A 考查表语从句。句意：如果一支铅笔的一部分放在一杯水中，它看起来就像断了一样。空格处引导的是表语从句，由it were broken可知，句子是虚拟语气，再由常识可知，如果一支铅笔的一部分放在一杯水中，它看起来就像断了一样，空格处意为“好像”，是as though，故选A。 30．B 考查表语从句。句意：他失败的原因是他太粗心了。空格处引导的是表语从句，从句中不缺成分，且句子意思完整，因此用that引导表语从句，故选B。 31．C 考查表语从句。句意：问题是他是否会足够努力以便能回到我们身边。空格处引导的是表语从句，既然有疑问，那肯定是说“问题是他是否会足够努力”，空格处意为“是否”，用whether引导表语从句，故选C。 32．B 考查名词性从句。句意：我总是倒着看报纸，因为报纸的后页是关于运动的。分析句子可知，表语从句“______ the sport is”中缺少地点状语，需用连接副词where引导。故选B。 33．C 考查主语从句和表语从句。句意：这种蜂蜜的特别之处在于它是由中国最早的蜜蜂品种酿造的。第一空为主语从句引导词，且在从句中作主语，需用连接代词what表示“…… 的地方/特征”；第二空为表语从句引导词，从句结构完整，句意完整，所以需用连接词 that，无实义，仅起连接作用。故选C项。 34．C 考查表语从句和虚拟语气。句意：我的建议是他应该选择出国深造。第一个设空处引导表语从句，从句成分和语义均完整，应用只起连接作用的that；在advice后的表语从句应用虚拟语气，谓语构成是“should+动词原形”，且should可省略，故第二个设空处应为(should) choose。故选C。 35．A 考查表语从句和动词短语辨析。句意：事实是我是作为免费的帮手赚得我的船费的，这就是我出现的原因。 第一个空为表语从句，且从句句子结构完整，意义完整，故应用that引导，且不能省略；accounts for占据，是……的原因；give an explanation to解释。故选A。 36．B 考查表语从句。句意：他去年完成了他的第一部小说，我们都认为那是他事业真正起飞的时候。空格处引导的是表语从句，从句中不缺主语或宾语，由“He finished writing his first novel last year”可知，句子表示“他去年完成了他的第一部小说，我们都认为那是他事业真正起飞的时候”，空格处意为“……的时候”，用when引导表语从句，故选B。 37．A 考查表语从句。句意：她喜欢大城市生活的原因是她比较容易去商店和餐馆这样的地方。本句使用固定句型the reason for ... is that ...，这里用that引导表语从句，它在从句中不做成分。故选A。 38．A 考查表语从句连接词。句意：谦虚是一种良好的品质，它能让你成为最好的自己。分析句子可知，which is 后面的句子为表语从句，在表语从句中，take缺少宾语，所以用what来充当其宾语。故A选项正确。 【点睛】what常用来引导名词性从句，即主语从句，宾语从句，表语从句和同位语从句。what在引导名词性从句时有两个重要的特点： 一是它在相应的名词性从句中一定有含义，常表示“什么”，“所……的”，“……的样子”等. 二是它在相应的名词性从句中一定做成分，而且常做主语，宾语或表语. 补充： 关系型 what引导名词性从句的五种在句中的意思用法归纳。 (1)表示“……的东西或事情”： They’ve done what they can to help her. 他们已经尽力帮助了她。 (2)表示“……的人或的样子”： He is no longer what he was. 他已经不是以前的那个样子。 (3)表示“……的数量或数目”： our income is now double what it was ten years ago. 我们现在的收入是10年前的两倍。 (4)表示“……的时间”： After what seemed like hours he came out with a bitter smile. 似乎过了几个小时他才苦笑着出来。 (5)表示“……的地方”： This is what they call Salt Lake City. 这就是他们称为盐湖城的地方。 分析句子可知，which is 后面的句子为表语从句，在表语从句中，take缺少宾语，所以用what来充当其宾语。故A选项正确。 39．A 考查表语从句。句意：——我上周开车去珠海看航展。——这就是你请几天假的原因吗？A. why为什么；B. because因为；C. where哪里；D. when何时。分析句子，设空处引导的是表语从句，此处表示“为什么”用why。故选A。 40．B 考查表语从句。句意：去拿你的外套，就在你放的地方。空处引导表语从句，从句缺少地点状语，需用连接副词where引导。故选B。 41．D 考查表语从句。句意：你说毅力是不顾障碍坚持做某事的能力，我同意这一点。分析句子可知，此处为连接副词where引导的表语从句，where在从句中作地点状语成分。故选D项。 42．C 考查名词性从句。句意：真正重要的是无论你做什么，你必须把它做好。分析句子结构，第一空引导主语从句，从句缺少主语，需用连接代词what引导，第二空引导表语从句，从句缺少宾语，表示“无论什么”，需用连接词whatever引导。故选C。 43．C 考查名词性从句。句意：年轻人寻找刺激和挑战，去了大公司所在的地方是导致许多老人独自留在农村的原因。此处为表语从句，从句中缺少主语，再由句意可知，应使用连接代词what引导，表“什么”。故选C项。 44．D 考查表语从句。句意：在每次失败后，这位著名的球员一次又一次地尝试。那就是他为什么最后会成功。be动词后面是一个表语从句，根据前文的tried again and again after each failure可知，空格处填why，前文是he succeeded at last的原因。故选D。 45．B 考查时态。句意：我们上次的会面好像被遗忘了。as though后接表语从句，谓语动词forget和主语our last meeting之间是被动关系，用一般过去时的被动语态，从句中不用倒装语序。故选B项。 46．C 考查表语从句。句意：那条由高速公路连接市中心的历史悠久的村庄是许多上班族周末的去处。结合句意可知此处是where引导的表语从句，故选C。 47．A 考查表语从句。句意：我突然哭起来的原因是我不想和我的母亲分开。 I don’t want to part with my mother.是一个表语从句，引导词在从句中不作任何成分，也没有实际意义，用that，表语从句中的that 是不可省的，故选A。 48．B 考查表语从句。句意：对于这起暴力事件我所知道的是它已经导致了至少三人死亡。句中that引导表语从句，陈述事实并没有疑问含义，排除AD项（whether和when表示疑问含义）。而且该从句结构完整，不需要使用连接代词what，故选择B项。 49．C 考查表语从句。句意：事情并不总是像看上去的那样。A. though虽然；B. whether是否；C. as像，照……方式；D. that(无意义)。根据句意可知，此处应用as引导表语从句，表示“像”。故选C项。 50．B 考查名词性从句和定语从句。句意：他给出的迟到的原因是被车祸耽搁了。分析The reason _____ he gave for his being late was ______…可知the reason 后面是定语从句，the reason要从句中作gave的宾语，所以可以用which或that。Reason在从句中作状语时才用why。第二个空是引导表语从句的关系词，从句中什么也不缺少，故用that引导。第二个空可能会误选because，在正式文体中，“….的原因是因为….时”一般用“the reason …..is that….”，而不用“the reason…is because…”。因此选B项。 51．D 考查定语从句的连接词。句意：你认为让孩子们处在一个他们能以不同的方式看待自己的环境中是有帮助的，这一点我同意。situation 是先行词，其后是一个定语从句，从句缺少表地点的关系副词 where，相当于 in which。第二空为表语从句，将上文看作一个整体观点，在从句中做状语，故用where。综上故选D。 52．B 考查名词性从句。句意：最令珍妮兴奋的是，她终于在他看来最难的考试中取得了成功。第一个空填主语从句的引导词；第二个空填表语从句的引导词；第三个空填宾语从句的引导词。第一个空在主语从句中作主语，用what，表示“所……的”；第二个空在表语从句中不作任何成分，也没有实际意义，用that；第三个空在宾语从句中作主语，用what，表示“所……的”。故选B。 53．that they are concise 考查表语从句和形容词。根据句意以及句式结构，此处表示“它们简练”为表语从句，从句中不缺句子成分，且句意完整，所以此处使用连接词that引导表语从句，表示“它们”为they作从句的主语，表示“简练”为形容词concise，所以谓语动词应为be动词，结合句意和主句的谓语动词is可知，此处使用一般现在时，主语they为复数意义，所以be动词为are。故填that they are concise。 54．why I have always succeeded 考查表语从句。根据汉语句子并结合英文可知，设空处对应“我总是成功的原因”，在主句中为表语从句，用“why”引导从句，从句主语“我”用“I”表达，“成功”用动词“succeed”表达，在从句中作谓语动词，与后文状语从句时态一致，用现在完成时结构，即“have succeeded”，“总是”用副词“always”表达，置于助动词“have”和动词“succeeded”之间。故填why I have always succeeded。 55．that is why we should raise/increase our awareness of protecting them 考查表语从句和固定短语。结合句意表示“那就是……的原因”句型为that is why...，why引导表语从句；从句主语为we；表示“增强”用raise/increase，表示“保护它们的意识”用 awareness of protecting them，动名词protecting作宾语。故填that is why we should raise/increase our awareness of protecting them。 56． the first one to finish the homework a lot/a great deal What surprised his teacher a lot was that he was the first one to finish the work. 考查表语从句和主语从句。第一空表示“第一个……”应用the first one to do sth.，不定式作后置定语，表示“完成作业”短语为finish the homework；第二空表示“十分，很”应用a lot/a great deal，修饰动词；此处改为同义句应用what引导主语从句，what在主语从句中作主语，指物，翻译为 what surprised his teacher a lot was that，后跟that引导的表语从句，“他是第一个完成作业的”翻译为he was the first one to finish the work.，句子时态为一般过去时；故填①the first one to finish the homework；②a lot/a great deal；③What surprised his teacher a lot was that he was the first one to finish the work.。 57．that we don’t need them anymore 考查表语从句。表示“我们”应用we；表示“不再”应用not...anymore；表示“需要”应用need，此处陈述客观事实，使用一般现在时，主语为we，表示否定含义，助动词用don’t；表示“它们”应用them；is后面接表语从句，从句不缺成分，引导词没有含义，需用连接词that引导。故填that we don’t need them anymore。 58． What they mean that they cannot provide an estimate 考查主语从句和表语从句。结合句意及is可知使用一般现在时，第一空表示“他们的意思”，在句中作主语，可译为一个主语从句，“他们”使用代词they作主语，“意思是”使用动词mean，引导词在从句中作宾语，使用连接代词what引导，即what they mean；第二空表示“他们没法给出……估算”，可译为一个表语从句，“没法”使用情态动词的否定式cannot，后接动词原形，“给出”使用动词provide，“估算”使用an estimate，即they cannot provide an estimate，表语从句结构、意义完整，应用that引导。故填①What they mean②that they cannot provide an estimate。 59．that you should go to apologise 考查表语从句和虚拟语气。由“My advice is”可知，“你应该去向他道歉”应用以连接词that引导的表语从句表达，且从句为虚拟语气，谓语动词为should do；动词短语apologise to sb表示“向某人道歉”，故“向他道歉”译为apologise to him，故该句译为that you should go to apologise to him。故答案为that you should go to apologise。 60． That was why 考查表语从句。根据句意可知，应为固定句型that is/was why...“这就是……的原因”，后接结果，why引导的为表语从句，结合从句中谓语动词的时态确定主句的时态为一般过去时。故填That was why。 61．what matters 考查表语从句。分析句式结构可知，is后面缺表语，且意义为“重要的”，可以用what引导的名词性从句what matters表示，what在从句中作主语，matter是谓语动词，意义为“要紧，有关系”。故填what matters。 62．What astonished him was that 考查主语从句，时态和表语从句。根据中英文提示并分析句子可知，句子用一般过去时，空处缺少“使他大为吃惊的是”，用主语从句what astonished him，从句作主语，谓语动词用单数was，后接表语从句，从句句意完整，成分齐全，用连接词that引导表语从句。故填What astonished him was that。 学科网（北京）股份有限公司 $