高考英语单项选择专题-非谓语动词
高考英语语法填空非谓语动词作表语考点单选题30题
高考英语语法填空非谓语动词作表语考点单选题30题1. The news was so surprising that we were all left ______.A. astonishedB. astonishingC. to astonishD. astonish答案：A。
本题考查非谓语动词作表语。
“astonished”表示“感到惊讶的”，修饰人；“astonishing”表示“令人惊讶的”，修饰物。
此处主语是“we”，表示人的感受，用“astonished”。
2. The problem remains ______.A. unsolvedB. unsolvingC. to solveD. to be solving答案：A。
“remain”后接形容词作表语，“unsolved”表示“未解决的”；“unsolving”这种形式不存在；“to solve”是动词不定式，表示“要去解决”，不符合语境；“to be solving”形式错误。
所以选A。
3. His job is ______ the animals.A. to look afterB. looking afterC. looked afterD. look after答案：A。
此处用动词不定式“to look after”作表语，表示“他的工作是去照顾动物”，强调具体的动作。
“looking after”是现在分词形式，通常表示正在进行或习惯性的动作；“looked after”是过去分词，表被动；“look after”是动词原形，不能直接作表语。
4. The glass is broken. It seems ______.A. to have been droppedB. to dropC. droppingD. dropped答案：A。
“seem”后接动词不定式，“to have been dropped”表示“似乎已经被掉落”，强调动作已经完成且是被动的；“to drop”是主动形式，不符合“玻璃被掉落”的意思；“dropping”是现在分词形式，“seem”后一般不接现在分词；“dropped”是过去分词，不能直接接在“seem”后。
高中英语非谓语动词运用单选题50题
高中英语非谓语动词运用单选题50题1. ______ is a good form of exercise for both young and old.A. WalkB. WalkingC. To walkD. Walked答案：B。
本题考查非谓语动词作主语。
动名词walking 作主语表示泛指的、习惯性的动作；A 选项Walk 是动词原形，不能作主语；C 选项To walk 常表示具体的、一次性的动作；D 选项Walked 是过去式，不能作主语。
2. I enjoy ______ very much.A. swimB. swimmingC. to swimD. swam答案：B。
本题考查非谓语动词作宾语。
enjoy 后接动名词作宾语，A 选项swim 是动词原形；C 选项to swim 是动词不定式；D 选项swam 是过去式。
3. She couldn't help ______ when she heard the funny story.A. laughB. to laughC. laughingD. laughed答案：C。
本题考查非谓语动词作宾语。
couldn't help doing sth. 是固定搭配，表示“忍不住做某事”，A 选项laugh 是动词原形；B 选项to laugh 不符合固定搭配；D 选项laughed 是过去式。
4. We decided ______ at home because of the bad weather.A. stayB. to stayC. stayingD. stayed答案：B。
本题考查非谓语动词作宾语。
decide to do sth. 是固定搭配，表示“决定做某事”，A 选项stay 是动词原形；C 选项staying 是动名词形式；D 选项stayed 是过去式。
5. They prefer ______ rather than ______.A. to read; watch TVB. reading; watch TVC. reading; to watch TVD. to read; to watch TV答案：A。
高考英语高中英语非谓语动词答题技巧及练习题(含答案)
高考英语高中英语非谓语动词答题技巧及练习题(含答案)一、单项选择非谓语动词1．(重庆 ) Like ancient sailors, birds can find their way__________ the sun and the stars.A． used B．having usedC． using D． use【答案】 C【分析】【剖析】【详解】观察非谓语动词。
句意：象古代的水手，鸟能利用太阳和星斗来找到他们的路。
谓语动词是 can find，故 use 用非谓动词作陪伴状语，与逻辑主语birds 是主动关系，用此刻分词做陪伴状语，依据句意，use 这一动作与谓语动词动作同时，用此刻分词的一般式。
应选C。
【点睛】陪伴状语是指状语从句的动作陪伴主句发生，它的特色是：它所表达的动作或状态是陪伴着句子谓语动词的动作而发生或存在的，这个考点在高考取常常出现，本题观察的是分词做陪伴状语，分为此刻分词和过去分词，此刻分词短语表示与主句的主语在逻辑上有主谓关系，即表示主动意义；而过去分词短语则表示与主句的主语在逻辑上是动宾关系，即被动意义； He sen me an e-mail hoping to ge further information他给我发一封电子邮件，希望获取更多的信息； He hurried to the hall, followed by two guards. 他仓促进了大厅，后边随着两个警卫。
2．The girl is so grateful whenever she remembers my brother and me ____ her from the icywater.A． to have saved B． to save C． saving D． saved【答案】 C【分析】【详解】观察非谓语动词。
句意：这个女孩是有感恩之心的，不论何时她都记得我和我弟弟把她从冰水里救出的情况。
高考英语非谓语动词试题(有答案和解析)及解析
高考英语非谓语动词试题(有答案和解析)及解析一、单项选择非谓语动词1．When Peter speaks in public, he always has trouble _ the right things to say. A．thinking of B．to think of C．thought of D．think of【答案】A【解析】【详解】考查非谓语动词。
句意：当Peter在公众场合说话的时候，他总是很难想到合适的说话的内容。
have trouble（in） doing sth 做某事有困难。
故选A项。
2．I had been betrayed by those who I trusted several times, ______ in a suspicious attitude towards everything and everyone.A．resulted B．having resulted C．resulting D．to result【答案】C【解析】【详解】考查非谓语做结果状语。
句意：我曾被我信任的人背叛过几次，导致我对每件事和每一个人都抱着怀疑的态度。
“result in...”为固定搭配，意为“导致”。
前一句“我曾被我信任的人背叛过几次”，导致后面的结果“我对每件事和每一个人都抱着怀疑的态度”。
前一句导致后面的结果，此处要用动词的ing形式作结果状语，因此选C。
3．114．––My car is making a really strange noise.––You’d better get it ______ before you drive to Denver.A．looking at B．looked atC．to look at D．being looked at【答案】B【解析】考查非谓语动词。
句意：——我的汽车发出奇怪的噪音。
——你最好在开车去丹佛之前让人检查一下。
高考英语非谓语动词练习题20题含答案解析
高考英语非谓语动词练习题20题含答案解析1.The importance of protecting the environment is widely recognized, making people more aware of their responsibilities.A.makingB.madeC.to makeD.make答案解析：A。
“making people more aware of their responsibilities”在句中作结果状语，表示自然而然的结果。
B 项“made”为过去分词，表被动；C 项“to make”表目的；D 项“make”为动词原形，不能作非谓语。
此句中“保护环境的重要性被广泛认可，从而使人们更加意识到他们的责任”，是主动关系且为自然而然的结果，所以选A。
2.Reading classic novels is considered a great way to improve one's language skills.A.is consideredB.consideredC.to considerD.considering答案解析：A。
此句中“Reading classic novels”作主语，“is considered”为谓语动词，“a great way to improve one's language skills”为宾语。
B 项“considered”为过去分词，不能单独作谓语；C 项“to consider”表目的；D 项“considering”为现在分词，通常作状语或表伴随。
所以选A。
3.Her dream is to become a famous writer, inspiring generations to come.A.inspiringB.inspiredC.to inspireD.inspire答案解析：A。
高考英语非谓语动词单选题30题
高考英语非谓语动词单选题30题1.The students' union is considering organizing a charity event, which needs a lot of planning. Here “organizing” is used as a subject.anizingB.to organizeanizedD.being organized答案：A。
“organizing a charity event”在这里作主语，动名词可以作主语，不定式也可以作主语，但此处强调的是经常性、习惯性的动作，动名词更合适。
B 选项不定式作主语通常表示具体的、一次性的动作；C 选项organized 是过去分词，不能作主语；D 选项being organized 有正在被组织的意思，不符合语境。
2.After finishing his homework, he went out to play basketball. Here “finishing” is used as an object.A.finishingB.to finishC.finishedD.being finished答案：A。
“After finishing his homework”是时间状语，“finishing”在这里作介词after 的宾语，动名词可以作介词宾语。
B 选项不定式一般不作介词宾语；C 选项finished 是过去分词，不能作宾语；D 选项being finished 有正在被完成的意思，不符合语境。
3.She enjoys reading novels in her spare time. Here “reading” is used as an object.A.readingB.to readC.readD.being read答案：A。
“enjoy doing sth”是固定用法，“reading novels”在这里作宾语，动名词可以作动词宾语。
高考英语一轮复习非谓语动词训练题(含答案)
高考英语一轮复习非谓语动词训练题（含答案）一、单项选择题1．________ his restless students occupied with an indoor sport on rainy days, James Naismith created basketball.A．To be kept B．Kept C．To keep D．Keeping 2．David never dreamed of _______ a chance for him to win the first prize in singing.A．there was B．it being C．there being D．it was3．Lots of empty bottles were found under the poor old man's bed. He must have done nothing but .A．drink B．to drink C．drinking D．drunk4．The dancer's incredible performance had the audience on its feet ______ for 10 minutes at the end of the show.A．being clapped B．clap C．clapped D．clapping5．______ us prepare for the exam, the teacher suggested reading through our notes.A．To help B．Helped C．Helping D．Being helped 6．Technological innovations, ____ good marketing, will promote the sales of these products.A．combined with B．combining withC．having combined with D．to be combined with7．________ deserts for many years, I am still amazed at their beauty.A．To study B．Having studied C．Studying D．Studied8．— Henry doesn't seem to be what he was.— No. _______ so much in the war has made him more thoughtful.A．Seen B．His seeing C．Having seen D．To have seen9．________ in the traffic jam, I usually set out at 7:00 in the morning from home by car.A．To avoid to be caught B．To avoid being caught.C．Avoiding being caught D．Avoiding to be caught10．A search group was organized to look for the university students _______ in the mountain.A．trapping B．having trapped C．to trapped D．trapped 11．Floyd, a 46-year-old black man, died hopelessly, ________ against the floor by a policeman for nine minutes, which gave rise to protests throughout the USAA．having pinned B．to be pinning C．Pinning D．having been pinned 12．Many e-commerce platforms play a great role in promoting employment, ________services from stocksupport to interest-free loansA．offering B．to offer C．offered D．having offered 13．The police are trying to find out the evidence of the woman _________ in the bathroom.A．murdered B．to be murdered C．being murdered D．murdering14．The pandemic has fundamentally altered consumer behavior and enterprise operations, ________ digital adoption and transformation a necessity.A．to make B．making C．having made D．made15．In addition to political issues, President Xi's visit will also witness concrete agreements ________.A．signed B．having been signedC．to be signed D．having signed16．A total number of 172 people are now in hospital for treatment, of them 24 seriously ________.A．being injured B．injured C．having injured D．to be injured17．________ in the wonderful world of words, students will increase their vocabulary and boost their reading competence.A．Being involved B．InvolvingC．Having involved D．Involved18．The guests chatted so loudly at the table that the host had to struggled _____ .A．to have heard B．to make heard C．to be hearing D．to be heard 19．Determined to save Chinese lives, Rabe protected as many people as he could, ____ his house and office into shelters for his employees and their families.A．to turn B．having turned C．turning D．turned 20．Although ________ great success as an artist, the young man keeps working hard.A．achieving B．achievedC．having achieved D．to achieve21．Whenever I'm seated alone in the room, I find myself ________ to the picture on the wall.A．attracting B．attractedC．to be attracted D．being attracted22．A recent TV drama, All is well, has grabbed the attention of many viewers, many of them _______ how realistic the show is.A．remark B．remarkingC．to remark D．having remarked23．— How did you get to your forum last week?—All flights _______ because of the terrible weather, we had no alternative but to go there by train.A．cancelled B．to cancelC．were cancelled D．having cancelled24．Once I recognized that I had no one's expectations _______ but my own, relaxed. I began to view college as a wonderful experiment.A．living up to B．having lived up toC．to live up to D．to have lived up to25．_______ the latest development of science and technology, he has had many modern communication devices installed in his office.A．To inform of B．Being informed ofC．To be informed of D．Having informed of26．A celebrity is a person who works hard all his life to become known, then wears dark glasses _______.A．to avoid being recognized B．to avoid recognizingC．to avoid to recognize D．avoid being recognized27．I'm impressed by the smart speakers with a voice control system, _______ all the devices to a computer.A．connecting B．connectedC．to connect D．having connected28．There are some factors dominating your success. _______ a good chance sometimes, in my opinion, outweighs one's ability.A．Seizing B．Having seizedC．Seized D．Having been seized29．Our teacher often tells us that the present efforts ___ in our future will be rewarded sooner or later.A．investing B．to invest C．being invested D．invested30．______ from a real event, the Climbers tells the story of the first Chinese team to conquer Mount Everest in 1960.A．Adapting B．To adapt C．Having adapted D．Adapted31．With the number of homecoming overseas students ______ up in recent years, the attraction of foreign degree holders has gradually faded.A．shot B．being shot C．shooting D．to shoot32．______ some users of the smart watches for two years, they draw a conclusion that it is necessary to renewthe software.A．Following B．To followC．Followed D．Having followed33．And it made me think that maybe I need to set time aside the people in my life how much I appreciate what they did.A．telling B．to tell C．told D．being told 34．Many migrating birds wing their way over and through the city, _______some surprising natural scenery.A．created B．creating C．having created D．to create35．____________the physical responses are a sense of comfort and a rush of relaxation.A．Accompanied B．Being accompaniedC．Accompanying D．To accompany36．Twenty years ago, people in this town lacked both the motivation to fight pollution and the knowledge of what exactly needed ________.A．to clean B．have cleaned C．clean D．cleaning 37．Mary rushed home______ she heard the news, only ______ that her husband was gone.A．as soon as; finding B．immediately; to findC．the moment; find D．when; found38．Helen borrowed my book the other day, promising __________it soon.A．to return B．returnedC．returning D．having returned二、单词拼写39．What has led many government to r(去除) necessary regulations?40．He was accused of illegally (进口) weapons across state lines in court.答案1．C 2．C 3．A 4．D 5．A 6．A 7．B 8．B 9．B 10．D 11．D12．A 13．A 14．B 15．C 16．B 17．D 18．D 19．C 20．C 21．B22．B 23．A 24．C 25．C 26．A 27．A 28．A 29．C 30．D 31．C 32．D33．B 34．B 35．C 36．D 37．B 38．A 39．Remove 40．importing。
高考非谓语动词练习题及答案
5．China’s image is improving steadily, with more countries ________ its role in international affairs.
A．recognizingB．being recognizedC．to be recognizedD．recognized
【答案】A
【解析】
【详解】
考查with复合结构。句意：中国的形象正在稳步提升，更多的国家认识到中国在国际事务中的作用。“更多的国家”和“认识”之间是主动关系，用现在分词，故选A。
A．otherwise informingB．otherwise being informed
A．Seeing B．Saw
C．Seen D．To see
【答案】A
【解析】考查非谓语动词。句意：看到即将下雨，James随身带着雨衣。分析句子可知，“see that it was going to rain”作状语，see与主语James是主动关系，用现在分词表示主动关系。故选A。
11．New York is the fashion capital of the world, says a new study on Feb 4. 2014 by the Global Language Monitor (GLM), Pairs ____ second, with Shanghai ______10thwhile Hongkong 20th.
2．(天津) The hospital has recently obtained new medical equipment, ________ more patients to be treated.
高中英语非谓语动词系统学习单选题50题
高中英语非谓语动词系统学习单选题50题1. ___ a foreign language well is not easy.A. LearnB. LearningC. To learnD. Learned答案：B。
本题考查非谓语动词作主语。
动词原形不能作主语，A 选项Learn 错误；To learn 表示具体的、一次性的动作，Learning 表示一般的、习惯性的动作，学好一门外语是一般性的行为，所以用Learning，C 选项To learn 不符合题意；Learned 是过去分词，不能作主语，D 选项错误。
2. I enjoy ___ books in my spare time.A. readB. readsC. readingD. to read答案：C。
本题考查非谓语动词作宾语。
enjoy 后接动词的-ing 形式作宾语，A 选项read 是动词原形，B 选项reads 是第三人称单数形式，D 选项to read 不符合enjoy 的用法，所以选 C 选项reading。
3. She couldn't help ___ when she heard the funny story.A. laughB. laughingC. to laughD. laughed答案：B。
本题考查非谓语动词作宾语。
couldn't help 后接动词的-ing 形式，A 选项laugh 是动词原形，C 选项to laugh 不符合couldn't help 的用法，D 选项laughed 是过去式，均不正确，所以选B 选项laughing。
4. We decided ___ the problem by ourselves.A. solveB. solvingC. to solveD. solved答案：C。
本题考查非谓语动词作宾语。
decide 后接动词不定式作宾语，A 选项solve 是动词原形，B 选项solving 是-ing 形式，D 选项solved 是过去式，都不符合decide 的用法，所以选择C 选项to solve。
【英语】高考英语非谓语动词题20套(带答案)含解析
【英语】高考英语非谓语动词题20套(带答案)含解析一、单项选择非谓语动词1．When we saw the road ________ with snow, we decided to spend the holiday at home. A．block B．to blockC．blocking D．blocked【答案】D【解析】【详解】考查非谓语动词。
句意：当我们看到路上被雪覆盖时，我们决定在家里度假。
此处用非谓语动词作宾补，动词block与see的宾语the road之间为被动关系，构成短语see sb/ sth done。
故选D。
2．When ___________ for his views about his teaching job, Philip said he found it very interesting and rewarding.A．asking B．askedC．having asked D．to be asked【答案】B【解析】试题分析：句意:当马克被问做教师这个职业时的看法。
他说他发现这个工作是非常有趣和值得的。
这里when引导的省略句，完整的是when he was asked his view about his job as a teacher，这里当从句中的主语与主句的主语一致，并且从句的谓语动词有be时，这时从句的主语与be同时省略，故选B。
考点：考查省略的用法。
点评：本题难度适中。
为了使话说得简明扼要，英语句子中某个单词、短语甚至从句或主句都可以省去。
这种省去句子某些成分而保持句子意思不变的现象，称为省略。
它是高中阶段的重要的语法项目，需要考生仔细分析句子结构，来确定省略的内容。
这里考生容易误选A。
即学即练:He is rather difficult to make friends with, but his friendship，______ is more true than any other.A.once gainedB.when to gainC.after gainingD.while gaining解析：A。
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专题六非谓语动词1．(高考大纲全国卷)The island，________ to the mainland by a bridge, is easy to go to. A．joining B．to joinC．joined D．having joined解析：句意：这个岛屿由一座桥和大陆相连，很容易到达。
join与the island之间是逻辑上的动宾关系，故此处用过去分词。
答案：C2．(高考大纲全国卷)Sarah pretended to be cheerful，________ nothing about the argument. A．says B．saidC．to say D．saying解析：句意：萨拉假装很开心，对那次争论只字未提。
Sarah和say之间是逻辑上的主谓关系，故此处用现在分词形式。
答案：D3．(高考山东卷)Look over there－there's a very long, winding path________up to the house. A．leading B．leadsC．led D．to lead解析：句意：看那儿——有一条很长的，蜿蜒曲折的小路通向那座房子。
leads 用作谓语动词，本题的there be 句型中已有is，故排除B项，path与1ead之间是逻辑上的主谓关系，又由题中的动词look可以判断lead 这一动作不是表示将来的动作，故可以排除过去分词短语和不定式短语充当的后置定语，即排除C、D两项。
在本句中leading up to the house 作后置定语，修饰path，相当于定语从句which leads up to the house。
故选A。
答案：A4．(高考天津卷)Passengers are permitted________only one piece of hand luggage onto the plane.A．to carry B．carryingC．to be carried D．being carried解析：句意：乘客只被允许带一件手提行李登机。
该题考查permit 的固定搭配be permitted to do sth.(被允许做某事)的用法。
动词不定式在permit sb.to do 中作宾语补足语，但在be permitted to do 中作主语补足语。
可排除B、D选项。
to carry是动词不定式一般式的主动形式，而to be carried则是动词不定式一般式的被动形式。
根据passengers 与carry 之间的主动关系可确定选A项。
答案：A5．(高考上海卷)Today we have chat rooms，text messaging，emailing...but we seem ________the art of communicating facetoface.A．losing B．to be losingC．to be lost D．having lost解析：句意：现在我们有聊天室，能传递文本信息，还可发电子邮件……但是我们似乎正在失去面对面交流的技能。
考查非谓语动词作表语。
seem后通常用动词不定式，排除A和D两项；此处非谓语动词后有名词the art of communicating facetoface作其宾语，所以排除C项(被动形式)，故选B。
答案：B核心考点突破[动词不定式]一、动词不定式作主语不定式短语作主语时，如果主语较长，往往在句首用it作形式主语，而将真正的主语(不定式)移到谓语动词之后，形成“it＋谓语＋(作主语的)不定式”结构，以避免头重脚轻，保持句子结构的平衡。
[典例1]It is my honor ________here to spend some time with you.A．to be invited B．invitingC．being invited D．to invite[解析]此处表示具体的某一次动作，应用不定式结构，故排除B、C。
根据逻辑关系可知，“我”是“被邀请”，因此用动词不定式的被动式。
故选A。
此时前面的It只是形式主语，后面的不定式才是真正的主语。
[答案]A二、动词不定式作表语动词不定式可作表语，通常说明或解释主语的内容，也可表示将来的动作。
[典例2]The purpose of new technology is to make life easier，________it more difficult. A．not making B．not makeC．not to make D．to not make[解析]前面用动词不定式作表语说明新技术的目的，后面用不定式的否定式作表语，进一步说明新技术的作用。
不定式的否定形式是在不定式的标志词to前加not。
故答案为C。
[答案]C三、动词不定式作宾语英语中有一部分动词常跟不定式作宾语。
常见的这类动词有：agree同意；fail未能；promise 保证；afford承担得起；forget忘记；refuse拒绝；happen碰巧；attempt试图；hesitate 犹豫；seek试图；determine决定；prepare准备；pretend假装等。
[典例3]There were many talented actors out there just waiting________.A．to discover B．to be discoveredC．discovered D．being discovered[解析]discover与many talented actors之间是动宾关系，且强调将来，故用不定式的被动语态。
[答案]B四、动词不定式作宾补1．有些动词(短语)后面常接带to的不定式作宾语补足语。
常见的这类动词有：advise劝告；force迫使；instruct指示；ask要求；intend打算要；beg请求；expect期望；invite邀请；forbid禁止；remind提醒；urge激励；order命令；permit允许；teach劝诫；wish希望；persuade说服。
动词短语有：call on，count on，rely on，depend on，long for，wait for 等。
[典例4]We can't count on a man like Jim ________us the necessary help.A．to give B．givingC．to be given D．given[解析]count on sb.to do sth.表示“依靠(指望)某人做……”。
[答案]A2．在think，consider，believe，find，feel，know，declare，prove，suppose，imagine等词后面，常跟“to be＋形容词(也可以是名词或反身代词)”结构，但在主动语态中to be常可以省去。
[典例5]We sometimes imagine a desert island ________a sort of paradise，where the sunalways shines.A．be B．beingC．不填D．is[解析]表示“想像某人/某物……”，用imagine sb./sth.(to be)＋n./adj.结构，其中to be可省略。
[答案]C3．有些动词，主要是感官动词和使役动词，它们可后接不带to的不定式作宾语补足语，如：see，notice，observe，feel，hear，have，make，let等，但如果是在被动语态的句子中，就要用带to的不定式作主语补足语。
[典例6]My parents have always made me ________about myself，even when I was twelve. A．feeling well B．feeling goodC．feel well D．feel good[解析]表示“使某人做……”，用make sb.do sth.结构，后面用不带to的不定式作宾语补足语。
feel good意为“感觉好”。
well也可以用作形容词，但其意思是“健康的”。
[答案]D五、动词不定式作定语1．不定式用在the first，the second，the last，the only等短语后面作定语。
[典例7]His first book ________next month is based on a true story.A．published B．to be publishedC．to publish D．being published[解析]考查非谓语动词作后置定语。
由时间状语next month可知所填非谓语动词表示将来的动作，用动词不定式，其逻辑主语与publish之间存在动宾关系，故用不定式的被动式，故选B。
[答案]B2．不定式常放在某些名词或代词后面作定语。
不定式作定语与被修饰的中心词之间常表现为主谓关系或动宾关系。
The next train to arrive was from New York.(主谓关系)It was a game to be remembered.(动宾关系)[典例8](高考湖南卷)The ability________an idea is as important as the idea itself. A．expressing B．expressedC．to express D．to be expressed[解析]句意：表达观点的能力和观点本身同等重要。
ability后通常跟动词不定式(短语)作后置定语，故排除A、B两项；此处the ability与express是逻辑上的主谓关系，表示主动意义，故排除D项。
[答案]C六、动词不定式作状语1．不定式作原因状语。
不定式也可跟在某些形容词或动词后面作原因状语。
[典例9]We were astonished ________the temple still in its original condition.A．finding B．to findC．find D．to be found[解析]考查非谓语动词。
句意：我们吃惊地发现那座寺院仍然处于原始状态。
空格处为动词不定式作状语，表示原因。
[答案]B2．不定式作目的状语。
不定式作目的状语既可放在句首也可放在句尾。
为了加强语气，也可用“so as to do”或“in order to do”结构作目的状语。
in order to既可放在句首也可放在句尾，so as to较少置于句首。