A．realizingB．to be realized
C．realizedD．to realize
2．At the awarding ceremony held in Tokyo, the scientists were surprised by what ______ in science and technology.
A．has discovered B．has been discovered
A．Having explainedB．Having been explained
C．Though it was explainedD．It was explained
【答案】D
【解析】
因为有连词but，前面应是完整的句子，排除A,B; Though不能和but同时使用，所以选D。
15．Louis Cha (金庸) passed away. As for his achievement, there is such a comment, “He ______ the Nobel Prize for Literature with his written works translated into English.”
A．is not pollutedB．would not be polluted
C．had not been pollutedD．would not have been polluted
【答案】B
【解析】
选B句意：如果我们早采取有力措施，现在河水就不会污染这么严重。主句表示与现在事实相反的虚拟语气，用would加动词原形。
被动语态详解+例句
一、单项选择被动语态
1．My brother and I have __________her birthday party.
A．been invitedB．been invited for
C．invited toD．been invited to
【答案】D
【解析】
【详解】
考查语态和固定搭配。句意：我哥哥和我被邀请参加她的生日聚会。My brother and I与invite之间是被动关系，invite sb to somewhere表示“邀请某人去某地”，故D项正确。
C．was told; was washedD．had been told; was washed
【答案】B
【解析】
考查时态与感官动词。主句时态为过去时，而从句时态发生在主句之前，即过去的 wash等表示感官的动词不用被动语态，直接用主动语态，结合前面时态可知，应选washed。句意:随后史密斯夫人决定买那种布，因为有人告诉她那种布很好洗。故选B。
【解析】考查被动语态。上句：修理被完成了吗？下句：是的，当我回到家的时候它们已经被完成。根据句意可知句子用过去完成时态的被动语态，故选D。
10．----Have you telephoned your father?
--- Yes, heback next week.
A．is expectedB．expects
C．had discovered D．had been discovered
【答案】D
【解析】句意：在东京举行的颁奖仪式上，科学家们惊讶于科学技术的发现。科学家们感到惊讶是过去式，故科学技术发现用过去完成时，what于动词discover是被动关系，故选D。
3．The singer’s music videonearly 9 million times since it was posted on the Internet four weeks ago.
【点睛】
could have done可用于肯定句、疑问句和否定句。用于肯定句既可以表示过去能够做而实际未做，有惋惜、遗憾或委婉批评之意，通常译为“本来可以”“本来能”，也可以表示对过去动作的推测，常可译为“可能（已经)”。本句表达金庸本能获得诺贝尔文学奖，但却没有获得的惋惜。故A选项正确。
16．People believe that the China Dream is not very difficult ________ so long as the whole nation works hard for it.
11．Usually Beijing Roast Duck _____ together with special pancakes, green onions and sweet sauce.
A．was served B．will serve
C．is served D．served
【答案】C
【解析】考查时态和被动语态。句意：通常北京烤鸭配上特制的薄煎饼、青葱和甜酱。句子说的是一般情况，要用一般现在时态；句子主语Beijing Roast Duck是单数第三人称，和谓语动词serve之间是被动关系，所以推知句子要用一般现在时态的被动语态，故答案为C。
12．8 students and 2 teachersat Santa Fe High School by a 17-year-student armed with a shotgun and a pistol. This is one of the many gun-related tragedies that have happened in the last 2 years.
7．—Do you know why a meetingby the middle school teachers last Sunday?
—To demand smaller classes of no more than 25 to 30 students in each class.
A．was held B．had been held
A．could have been rewardedB．must have been rewarded
C．should be rewardedD．need have been rewarded
【答案】A
【解析】
【详解】
考查情态动词+have done用法。句意：金庸去世了，至于他的成就，有这样的评论：他本能获得诺贝尔文学奖用他的被翻译成了英语的著作。A. could have been rewarded本可以被授予；B. must have been rewarded一定被授予；C. should be rewarded应该被授予；D. need have been rewarded本必要被授予。根据语境，A选项正确。
5．Many artifacts ________ for the first time in the National Museum at present.
A．were exhibited B．were being exhibited
C．are being exhibited D．are exhibited
C．will expectD．will be expected
【答案】A
【解析】
试题分析：句意：--你给你的父亲打电话了吗?—是的，他有望明年回来。这里sb be expected to do现在现在盼望明年回来，所以用一般现在时的被动语态，这里he应指的是父亲。根据句意故选A。
考点：考查动词时态及语态的用法。
【答案】D
【解析】
考查语态和时态。句意：一个救援人员冒着生命危险挽救了两个被困在山里两天的旅游者。“who ___ in the mountains for two days”是定语从句，修饰two tourists，two tourists和trap之间是被动关系，该空应用被动语态。由risked可知，营救人员救游客是过去的事情，被困两天发生在营救人员救了他们之前，即“过去的过去”，该空应用过去完成时态。综上，D选项正确。
A．design B．had designed
C．were designed D．have been designed
【答案】C
【解析】考查时态和语态。句意：在古代中国的风筝被设计成鸟的形状。根据in ancient times可知，句子用一般过去时态，根据动词与主语是被动关系，故用一般过去时的被动语态，故选C。
点睛：过去完成时表示过去某一时间或动作以前已经发生或完成了的动作，即“过去的过去”，其表达形式为had done，被动语态的表达形式为had been done。
14．________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.
C．has held D．held
【答案】A
【解析】考查动词的时态和语态。meeting是hold逻辑上的宾语，故用被动语态，再由时间状语last Sunday可知用一般过去时。故选A。句意：——你知道为什么上星期日中学老师召开会议吗？——要求更小班，每个班不超过25-30个学生。
8．Chinese kites in ancient times ________ in the shape of birds.
13．A rescue worker risked his life saving two tourists who ________ in the mountains for two days.
A．are trapping B．have been trapped
C．were trapping D．had been trapped
【答案】C
【解析】考查动词时态与语态。句意：许多史前古器物目前正在国家博物馆首次展出。根据时间状语“at present”可知，句子描述现在正在进行的动作，主语artifacts与谓语exhibit之间是被动关系，故用现在进行时的被动语态。故选C。