Unit 3 Diverse Cultures 单元语法（省略）-2025-2026学年高一英语人教版必修第三册

Unit 3 Diverse Cultures 重点语法 省略 一、单句语法填空 1．When (cross) the road, the children are required to stop to look around and walk hand in hand. 【答案】crossing 【详解】考查时态，主谓一致和省略。句意：过马路时，孩子们被要求停下来环顾四周，手牵着手走。根据句意，when引导的时间状语从句表示“当孩子们在过马路时”，由are可知，句子时态用现在进行时，是when the children are crossing the road，主句主语和从句主语一致，且从句中有be动词时，可省略从句中的主语和be动词，因此空格处是crossing。故填crossing。 2．The boss had her assistant (buy) some food for us. 【答案】buy 【详解】考查非谓语动词。句意：老板让她的助手给我们买了些吃的。此处 have后用作宾语补足语的不定式必须省略to。故填buy。 3．The dying man was moving his eyes slowly as if (look) for his relatives. 【答案】looking 【详解】考查非谓语动词。句意：垂死的人慢慢地转动着眼睛，好像在寻找他的亲人。分析句子结构可知，此处为状语从句的省略结构，让步状语从句中的主语与主句主语一致，且谓语中含有be动词时，可以省略“主语和be动词”，所以look的逻辑主语是the dyingman，两者为主动关系，且表示动作正在进行，所以使用现在分词形式。故填looking。 4．When (offer) important role in new movie, Andy got chance to become famous. 【答案】offered 【详解】考查省略句。句意：当安迪被邀请在新电影中扮演重要角色时，她得到了成名的机会。分析句子结构，when引导的时间状语从句的主语和主句的主语一致，可以省略从句的主语和be动词，完整的从句是When she was offered an important role in new movie，空处需使用过去分词，故填offered。 5．There are some health problems that, if not (treat) in time, can become bigger ones later on. 【答案】treated 【详解】考查状语从句的省略。句意：有一些健康问题，如果不及时治疗，以后会变成更大的问题。在when, while, if, as if, though(或although), as, until, once, whether, unless, where等连词连接的状语从句中，常省略跟主句相同的主语和be动词。结合句意分析子可知，“if not 　　　(treat) in time”是条件状语从句，原句为“if some health problems are not treated in time”，符合状语从句省略条件，省略some health problems后，应保留过去分词treated。故填treated。 6．Once (catch) cheating in the exam, you will never escape punishment. 【答案】caught 【详解】考查省略句。句意：一旦考试作弊被发现，你将永远无法逃脱惩罚。在once引导的状语从句中，当从句主语和主句主语一致且从句含有be的某种形式时，可省略从句的主语和be动词，此处主语与catch构成被动关系，故填caught。 7．All you have to do is (select)the photos of healthy food. 【答案】select 【详解】考查不定式to的省略。句意：你所要做的就是选择健康食品的照片。此处作表语，说明主语的内容应用不定式，且主语部分含有实义动词do的各种形式时，作表语的不定式可以省略to。故填select。 8．When (work) in green environment, people have fewer stomach aches. 【答案】working 【详解】考查状语从句的省略。句意：在绿色环境中工作，人们很少会胃痛。在when引导的时间状语从句中，当从句谓语有be动词，并且主语与主句主语一致时，从句通常省略主语和be动词。people 和work之间是主动关系，完整的句子为when they are working，省略主语they和are。故填working。 9．Once (disturb) by the noise of the baby, mother won’t have a sound sleep the whole night. 【答案】disturbed 【详解】考查状语从句的省略。句意：一旦被婴儿的噪音打扰，妈妈就会整夜睡不好觉。在when, while, if, as if, though (或although), as, until, once, whether, unless, where等连词连接的状语从句中，常省略跟主句相同的主语和be动词。结合句意，分析子可知，“Once　　　　(disturb) by the noise of the baby”是时间状语从句，原句为“Once mother is disturbed by the noise of the baby”，符合状语从句省略条件，省略mother is后，应保留过去分词disturbed。故填disturbed。 10．The football player is rolling on the ground as if (hurt) badly in the leg. 【答案】hurt 【详解】考查状语从句中的省略。句意：足球运动员在地上打滚，好像腿受了重伤。分析句子结构，as if引导方式状语从句，结合语意，从句主语为the football player，和主句主语是一个主语，hurt与主语the football player之间是被动关系，应用被动语态be hurt，状语从句中，从句主语与主句主语一致，且从句中含有be动词形式，则从句中的“主语+be动词”可以省略，所以空处应用动词的过去分词形式hurt。故填hurt。 11．Music and art, when (use) in hospitals, help to improve the conditions of patients by reducing stress, anxiety and blood pressure. 【答案】used 【详解】考查省略句。句意：在医院使用音乐和艺术有助于改善病人的状况，减少压力、焦虑和血压。在when引导的状语从句中，当从句主语和主句主语一致且从句含有be的某种形式时，可省略从句的主语和be，相当于省略了Music and art are。故填used。 12．I can’t help but (finish) the book based on a true story. 【答案】finish 【详解】考查固定搭配。句意：我只能根据一个真实的故事来完成这本书。固定结构：can’t help but do sth.“只得做某事”。故填finish。 13．Chinal’s Silk Road Economic Belt, once (accomplish), will boost the economic growth of the countries along the route. 【答案】accomplished 【详解】考查状语从句的省略。句意：中国的丝绸之路经济带一旦建成，将促进沿线国家的经济发展。在when, while, if, as if, though(或although), as, until, once, whether, unless, where等连词连接的状语从句中，常省略跟主句相同的主语和be动词。结合句意，分析子可知，“once (accomplish)”是时间状语从句，原句为“once Chinal’s Silk Road Economic Belt is accomplished”，符合状语从句省略条件，省略Chinal’s Silk Road Economic Belt is后，保留过去分词accomplished。故填accomplished。 14．If (press), he will admit that he knew about the affair. 【答案】pressed 【详解】考查省略句。句意：如果被追问，他会承认他知道这件事。if引导的条件状语从句中，主语与谓语构成被动关系，且省略了主语he和be动词，故填pressed。 15．The experiment shows that proper amounts of exercise, if (carry) out regularly, can improve our health. 【答案】carried 【详解】考查状语从句的省略句。句意：这个实验表明，如果定期进行适量的锻炼，能够改善我们的健康。根据句意可知，从句的主语proper amounts of exercise与carry out是动宾关系，故用被动语态。当主从句的主语一致的情况，且从句谓语的助动词为be动词时，可以省略从句的主语和be动词，句子if carried out可以还原为：if proper amounts of exercise are carried out。故填carried。 16．Although （warn）of danger, tourists can’t help taking photos near the cliff (悬崖). 【答案】warned 【详解】考查省略句。句意：尽管有危险警告，游客还是忍不住在悬崖附近拍照。句中although引导的是让步状语从句，warn与tourist之间是被动关系，构成了让步状语从句的省略，即原句为although the tourists are warned of danger。故使用过去分词作状语。故填warned。 17．While （chat）with them, I became aware of the advantages of physical exercise. 【答案】chatting 【详解】考查状语从句的省略。句意：在和他们聊天的时候，我意识到体育锻炼的好处。分析句子可知，本句为状语从句的省略，还原后为：while I was chatting，省略了I was。故填chatting。 18．Many kids have the habit of sucking their thumbs, which can cause lifelong problems unless (treat). 【答案】treated 【详解】考查被动语态，时态和省略。句意：许多孩子有吮吸拇指的习惯，如果不加以治疗，这可能会导致终身问题。根据“can cause lifelong problems unless”可知，句子表示“如果这个习惯不被治疗，这可能会导致终身问题”，句子描述客观事实，时态用一般现在时，因此unless引导的句子是unless the habit of sucking their thumbs is treated，which指代的是先行词“the habit of sucking their thumbs”，条件状语从句中主语和主句主语一致，且从句中有be动词时，可省略从句中的主语和be动词，因此空格处是treated，故填treated。 19．When (observe) an issue, don’t just focus on the theme and ignore the details. 【答案】observing 【详解】考查状语从句。句意：当观察一个问题时，不要只关注主题而忽略细节。主句和从句主语为同一个主语时，且从句的谓语动词为be动词+doing形式时，可以把主语和be动词省略。故填observing。 20．When (refer)to the specific schedule, he gave us a detailed description. 【答案】referring 【详解】考查时间状语从句的省略。句意：在谈到具体的日程安排时，他给了我们详细的描述。句子还原后为When he was referring to the specific schedule, he gave us a detailed description，在时间状语从句中，如果从句主语和主句主语一致，而从句的谓语动词中又含有be动词的形式时，可以省略从句主语和be动词。故填referring。 21．He lost his boots while （search）for frogs and insects. 【答案】searching 【详解】考查状语从句的省略。句意：他在寻找青蛙和昆虫时丢了靴子。while引导时间状语从句时，如果从句的主语和主句的主语相同，那么从句的主语和谓语动词be都可以省略，search与主语He是主动关系，用现在分词作状语。故填searching。 22．He sat in silence, and said one or two words when (speak) to. 【答案】spoken 【详解】考查状语从句的省略。句意：他默默地坐着，有人跟他说话，他就说一两句话。根据所给动词speak和空格前的连词when可知，该题是考查状语从句的省略。根据状语从句省略的条件，speak to的主语和句子主语一致是he，此处省略了主语和系动词，根据句意分析句子可知he和speak to是被动关系，所以要用过去分词。故填spoken。 23．While (look)through news on the Internet, I heard that a terrible fire broke out in the city of Tianjin. 【答案】looking 【详解】考查非谓语动词。句意：在网上浏览新闻时，我听说天津发生了一场可怕的火灾。I和look through之间是主动关系，所以这里用现在分词做时间状语。故答案为looking。 24．I always admire him because he can keep calm when (face) a dangerous situation. 【答案】facing 【详解】考查状语从句的省略。句意：我一直钦佩他，因为他在面对危险的情况时能保持冷静。分析句子可知，句子为“when”引导的时间状语从句，从句主语与主句主语“he”一致且谓语中含有“be”，此时可省略从句主语和谓语中的“be”，省略之前为“he is facing”，省略“he is”，故空格处应填“facing”。故填facing。 25．One afternoon, while (attempt)to get into bed she collapsed(倒下)from what was eventually discovered to be a heart attack. 【答案】attempting 【详解】考查非谓语。句意：一天下午，在试图上床睡觉时，她因心脏病发作而晕倒。当while从句中的主语与主句的主语一致，且含有be的某种形式时，从句中的主语连同be可同时省略。此句中的she和attempt是主动关系，还原为while she was attemptting to get into bed she collapsed from what was eventually discovered to be a heart attack. ，其中she was可省略，用非谓语作状语。故填attempting 26．She could do nothing but ________ (change) her name under the circumstances. 【答案】change 【详解】考查固定短语。句意：在这种情况下，她只能改名字。此处为短语can do nothing but do sth.表示“不得不做，只能做……”。故填change。 27．Though (lack) money, his family lived an enjoyable life. 【答案】lacking 【详解】考查状语从句的省略。句意：虽然没有钱，他的家人过着愉快的生活。根据语境可知，前半句意为“虽然当时他的家人没有钱”，可以写成：Though his family was lacking money，状语从句中的主语和主句主语一致，且从句中有be动词时，可省略从句中的主语和be动词，因此空格处填lacking。故填lacking。 28．Fear, if (deal) with properly, can serve as a great power. 【答案】dealt 【详解】考查状语从句的省略。句意：恐惧，如果处理得当，可以成为一种强大的力量。在when, while, if, as if, though(或although), as, until, once, whether, unless, where等连词连接的状语从句中，常省略跟主句相同的主语和be动词。结合句意，分析子可知，“if 　　　　(deal) with properly,”是条件状语从句，原句为“if fear is dealt with properly,”，符合状语从句省略条件，省略fear is后，保留过去分词dealt。故填dealt。 29．If (admit) by your ideal university, you’d better make a plan in advance so as to fully enjoy your college life. 【答案】admitted 【详解】考查状语从句的省略。句意：如果你被理想的大学录取，你最好提前做好计划，充分享受大学生活。if引导的条件状语从句和主句的主语一致，省略了从句的主语和be动词，admit和主语you之间是被动关系，完整的从句是“If you are admitted by your ideal university”，省略了you are，空处需填过去分词形式。故填admitted。 30．When (absorb) in his world of music，he felt as if he could “see” the beauty of the world around him，like he had in his previous life. 【答案】absorbed 【详解】考查省略。句意：当他沉浸在音乐世界中时，他感觉好像能“看到”他周围世界的美丽，就像他以前的生活一样。在when引导的状语从句中，若谓语部分含有be动词，而主语又跟主句主语相同或从句主语为it时，则从句中主语和be动词常一起省略。be absorbed in沉浸在……，when后省略he was。故填absorbed。 31．When the city of Pompeii was dug from its resting place, its walls were fresh as if (paint) yesterday. 【答案】painted 【详解】考查状语从句的省略。句意：当庞贝城从它的安歇之处被挖掘出来的时候，它的墙壁是新鲜的，就像昨天才画的一样。由“its walls were fresh”可知，句子表示“它的墙壁是新鲜的，就像昨天才画的一样”，墙壁是被画，由yesterday可知，句子时态用一般过去时，as if后的句子应为“as if they were painted”，状语从句中主语和主句主语一致，且有be动词时，可省略从句中的主语和be动词，也就是省略“they were”，因此空格处是painted，故填painted。 32．When (face) with a pandemic, people may become more forgiving. 【答案】faced 【详解】考查状语从句的省略。句意：当面对疫情时，人们可能会变得更宽容。根据句子结构，本句为状语从句的省略，还原后为：When people are faced with a pandemic。省略了 people are。故填faced。 33．When (chase) by an enemy, a rabbit can run as fast as 18 miles an hour. 【答案】chased 【详解】考查状语从句的省略。句意：被敌人追赶时，兔子的速度可达每小时18英里。分析句子结合句意可知，此处主句与从句的主语相同，都是a rabbit(兔子)，动作chase与主语a rabbit之间是被动关系，所以从句原句应是When a rabbit is chased by an enemy，在状语从句中，谓语动词含有be动词，主语相同的情况下可省略主语和be，所以此处应用过去分词，故填chased。 34．A café with a peaceful and casual atmosphere is popular among young customers, especially if (locate) in a quiet building. 【答案】located 【详解】考查状语从句的省略和过去分词。句意：一个拥有和平和休闲氛围的café很受年轻顾客的欢迎，特别是如果它位于一个安静的建筑里面。分析句子可知，此处是if引导的条件状语从句的省略，动词locate和主语café之间是被动关系，所以完整形式是especially if it is located in a quiet building，当状语从句的主语和主句主语一致且从句含有be动词时，可将从句主语和be动词一起省略，用过去分词表被动。故填located。 35．After (encourage) by what Jane said, Peter walked to the centre of the stage. 【答案】encouraged／being encouraged 【详解】考查状语从句的省略或者介词短语做状语。句意：在简所说的鼓励下，彼得走到舞台中央。当时间状语从句的主语与主句的主语一致，且有be动词时，可以省略从句主语和be动词，完整句子为After Peter was encouraged by what Jane said，此处省略Peter was，保留过去分词。故填encouraged。或者after作为介词，因为encourage与逻辑主语Peter是被动关系，且因为介词后需要使用doing形式，故填写being encouraged。 36．Anyone, once (test) positive for COVID-19 virus, will receive free medical treatment from our government. 【答案】tested 【详解】考查状语从句的省略。句意：任何新冠病毒检测呈阳性的人都将享受政府免费医疗。分析句子结构可知，此处涉及到了once引起的条件状语从句的省略（主从句主语一致，从句含有be动词，可以省略从句主语和be动词），此处完整句子为once anyone is tested positive for COVID-19 virus，可以省略anyone is，保留过去分词。故填tested。 37．When first (introduce) to the market, these products enjoyed great success. 【答案】introduced 【详解】考查省略句。句意：这些产品刚推出市场时，获得了巨大的成功。when引导的时间状语从句的主语和主句的主语一致，且含有be动词，可以省略从句的主语和be动词，完整的从句是When they were first introduced to the market，省略了they were，空处需填introduced。故填introduced。 38．Once (see)，it will never be forgotten. 【答案】seen 【详解】考查状语从句的省略和过去分词作状语。句意：一旦看到，就永远不会忘记。此处是状语从句的省略，完整句是once it is seen，省略了相同的主语和be动词。故答案为seen。 39．Harriet Stowe, mother of six, wrote parts of Uncle Tom’s Cabin while （cook）. 【答案】cooking 【详解】考查状语从句的省略， 句意：哈丽叶特·斯托是六个孩子的母亲，她在做饭时写下了《汤姆叔叔的小屋》的部分内容。根据句意可知，空格处的句子为while she was cooking，是while引导的时间状语从句，从句中的主语和主句主语一致，且从句中有be动词，因此可省略从句中的主语和be动词，因此空格处是cooking，故填cooking。 40．Mike Taylor discovered a brand-new species of dinosaur, while (conduct) research at the Natural History Museum in the UK. 【答案】conducting 【详解】考查状语从句的省略和时态。句意：迈克·泰勒在英国自然历史博物馆进行研究时发现了一种全新的恐龙物种。分析句子可知，句子为“while”引导的时间状语从句；结合语境，表示过去正在发生的事，应用过去进行时，从句主语和主句主语一致，即“Mike Taylor”，且从句谓语含有“be”，即“was”，故可省略从句主语和“was”，“conduct”意为“实施，执行”，动词词性，空格处应用“conduct”的现在分词“conducting”。故填conducting。 二、完成句子 41．Historians will revise the timeline of events based on new evidence. 历史学家会根据新的证据，在必要时修正事件的时间线。 【答案】if necessary 【详解】考查固定句型和状语从句的省略。在必要时为“if necessary”为固定句型。if之后省略了it is。故填if necessary。 42．如果被人吸入，他们就可能导致疾病甚至死亡。 in, they can result in illness or even death. 【答案】 If breathed 【详解】考查省略句。如果被吸入，“他们”与“吸入”是被动关系，所以用过去分词breathed。 43．他在做作业时睡着了。 He fell asleep his homework. 【答案】 while doing 【详解】考查状语从句的省略。表示“当……时候”用while，本句中指的是“他正在做作业时睡着了”；while + be doing sth.表示“当正在做某事的时候”；本句中主句的主语与从句的主语一致，所以省去从句的主语和be动词。故答案为①while；②doing。 44．A policeman must not smoke . 警察当班值勤时不得抽烟。 【答案】(while he is) on duty 【详解】考查时间状语从句及其省略句。“值勤”的英语是“on duty”；通过“值勤时”可以判断这个句子可以用时间状语从句来进行翻译，从句是“当班值勤时”，主句是“警察不得抽烟”。这个句子的引导词可以选择while，所以从句可以翻译成while he is on duty。在时间状语从句中，如果从句和主句的主语指代相同的对象，可以将从句的主语及助动词/系动词/情态动词同时省略，从而使句式显得简洁，所以从句可以省略成“on duty”，故填(while he is) on duty。 45． , the room is well lit. 房间虽然不大，却很亮堂。 【答案】Though not large 【详解】考查让步状语从句、状语从句的省略。由所给句意可知，空格处应表达“房间虽然不大”。表示“虽然”用though，引导让步状语从句，位于句首，首字母大写。表示“房间”用room，结合句子意思可知，此处为特指，room前加the。表示“大”用large，作表语，结合空后的is可知，从句be动词用is。空白处需要用让步状语从句，可以表达为Though the room is not large，此时从句与主句中的主语和谓语是相同的，为使语言更加简明可以省略主语和谓语。故填Though not large。 46．在和同学交谈时，我听说我们学校要组建一支乐队。 　 , I heard that a band would be formed in our school. 【答案】While talking with my classmates 【详解】考查省略句。此处为while引导的时间状语从句，从句缺少和主句一样的主语和be动词，从句为过去进行时，表示“交谈”应用talking with，后跟复数名词classmates。故填While talking with my classmates。 47． , you must be careful. 穿过街道时你一定要小心。 【答案】When crossing the street 【详解】考查状语从句的省略。分析句子结构可知，设空处是一个状语从句，由句意可知，表示“当……时候”可由when引导状语从句，表示“穿过街道时”可写为When you are crossing the street。当从句的主语与主句主语一致，且含有be动词，此时可将从句主语和be动词省略，构成状语从句省略结构。同时该空置于句首，开头单词首字母大写。故填When crossing the street。 48．当你专注于一项任务没被打扰时，你可以更快、更好地完成它。 When one task and being left alone, you can get it done faster and better. 【答案】 concentrating on 【详解】考查固定短语和状语从句的省略。根据中文提示可知，表示“专注于”可用动词短语concentrate on，且分析句子可知，这里考查状语从句的省略，从句的主语和主句主语都是you，且从句含有be动词，可以把从句的主语+be省略，完整句子为When you are concentrating on one task and being left alone。故填concentrating on。 49．熟能生巧！期待你的出色表现并在比赛中获奖！ Practice makes perfect! and being awarded in the competition. 【答案】Looking forward to your excellent performance 【详解】考查固定短语和名词。此处表示“期待”短语为look forward to，此处表示“期盼着”应用Looking forward to，是一种现在进行时的省略（省略了主语和be），用于表示对未来某事的期待、对某人的期待或对某种体验的期待；表示“你的出色表现”应用your excellent performance，作宾语。首字母大写。故填Looking forward to your excellent performance。 50．The medicine is quite effective if . 这种药如果及时服用是很有效的。 【答案】(it is) taken in time 【详解】考查动词短语和状语从句的省略。“如果及时服用”是条件状语从句，译文中用从属连词if引导；根据句意，从句主语为“The medicine”，可用代词it指代，“服用”是谓语，用动词短语take in表示，与主语之间是被动关系，描述一般性事实，用一般现在时的被动语态，所以从句译为if it is taken in time；状语从句中包含it和be动词时，可将其省略，即if (it is) taken in time。故填(it is) taken in time。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $ Unit 3 Diverse Cultures 重点语法 省略 一、单句语法填空 1．When (cross) the road, the children are required to stop to look around and walk hand in hand. 2．The boss had her assistant (buy) some food for us. 3．The dying man was moving his eyes slowly as if (look) for his relatives. 4．When (offer) important role in new movie, Andy got chance to become famous. 5．There are some health problems that, if not (treat) in time, can become bigger ones later on. 6．Once (catch) cheating in the exam, you will never escape punishment. 7．All you have to do is (select)the photos of healthy food. 8．When (work) in green environment, people have fewer stomach aches. 9．Once (disturb) by the noise of the baby, mother won’t have a sound sleep the whole night. 10．The football player is rolling on the ground as if (hurt) badly in the leg. 11．Music and art, when (use) in hospitals, help to improve the conditions of patients by reducing stress, anxiety and blood pressure. 12．I can’t help but (finish) the book based on a true story. 13．Chinal’s Silk Road Economic Belt, once (accomplish), will boost the economic growth of the countries along the route. 14．If (press), he will admit that he knew about the affair. 15．The experiment shows that proper amounts of exercise, if (carry) out regularly, can improve our health. 16．Although （warn）of danger, tourists can’t help taking photos near the cliff (悬崖). 17．While （chat）with them, I became aware of the advantages of physical exercise. 18．Many kids have the habit of sucking their thumbs, which can cause lifelong problems unless (treat). 19．When (observe) an issue, don’t just focus on the theme and ignore the details. 20．When (refer)to the specific schedule, he gave us a detailed description. 21．He lost his boots while （search）for frogs and insects. 22．He sat in silence, and said one or two words when (speak) to. 23．While (look)through news on the Internet, I heard that a terrible fire broke out in the city of Tianjin. 24．I always admire him because he can keep calm when (face) a dangerous situation. 25．One afternoon, while (attempt)to get into bed she collapsed(倒下)from what was eventually discovered to be a heart attack. 26．She could do nothing but ________ (change) her name under the circumstances. 27．Though (lack) money, his family lived an enjoyable life. 28．Fear, if (deal) with properly, can serve as a great power. 29．If (admit) by your ideal university, you’d better make a plan in advance so as to fully enjoy your college life. 30．When (absorb) in his world of music，he felt as if he could “see” the beauty of the world around him，like he had in his previous life. 31．When the city of Pompeii was dug from its resting place, its walls were fresh as if (paint) yesterday. 32．When (face) with a pandemic, people may become more forgiving. 33．When (chase) by an enemy, a rabbit can run as fast as 18 miles an hour. 34．A café with a peaceful and casual atmosphere is popular among young customers, especially if (locate) in a quiet building. 35．After (encourage) by what Jane said, Peter walked to the centre of the stage. 36．Anyone, once (test) positive for COVID-19 virus, will receive free medical treatment from our government. 37．When first (introduce) to the market, these products enjoyed great success. 38．Once (see)，it will never be forgotten. 39．Harriet Stowe, mother of six, wrote parts of Uncle Tom’s Cabin while （cook）. 40．Mike Taylor discovered a brand-new species of dinosaur, while (conduct) research at the Natural History Museum in the UK. 二、完成句子 41．Historians will revise the timeline of events based on new evidence. 历史学家会根据新的证据，在必要时修正事件的时间线。 42．如果被人吸入，他们就可能导致疾病甚至死亡。 in, they can result in illness or even death. 43．他在做作业时睡着了。 He fell asleep his homework. 44．A policeman must not smoke . 警察当班值勤时不得抽烟。 45． , the room is well lit. 房间虽然不大，却很亮堂。 46．在和同学交谈时，我听说我们学校要组建一支乐队。 　 , I heard that a band would be formed in our school. 47． , you must be careful. 穿过街道时你一定要小心。 48．当你专注于一项任务没被打扰时，你可以更快、更好地完成它。 When one task and being left alone, you can get it done faster and better. 49．熟能生巧！期待你的出色表现并在比赛中获奖！ Practice makes perfect! and being awarded in the competition. 50．The medicine is quite effective if . 这种药如果及时服用是很有效的。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $