高考英语单项选择分类训练：虚拟语气

这是一份高考英语单项选择分类训练：虚拟语气，共18页。
单项选择
1．—I can’t tell you how pleased I was to see Mary back and how eagerly I chatted with her.
—Oh, ________. After all I haven’t seen her for ages.
A．so how I was B．so it would have been with me
C．so would I D．so would I have been
2．Whatever ________ on her mind, she ________ a message and went straight away
A．could be; must have left B．might have been; shouldn’t have left
C．must have been; could have left D．should be; couldn’t have left
3．I insisted that he to the hospital at once, but he insisted that he quiet well then.
A．was sent; felt B．be sent; feel
C．be sent; was feeling D．was sent; felt
4．Yesterday, the storm delayed us. ________ the storm we would have been here in time.
A．If it were not for B．But for C．Unless D．But that
5．It is recommended that all citizens ________ in creating a civilized (文明的) city together.
A．can be involved B．be involved C．should involve D．are involved
6．They insisted that she________.
A．be invited B．was invited C．will be invited D．invite
7．Had he studied harder, he ______ the exam last week.
A．passed B．would pass
C．would have passed D．must have passed
8．It was required________ we________ at least another two experiments to make sure th machine function well.
A．l; did B．that; do
C．that; did D．should do
9．My adviser recommended that I ________ advanced literature because l like English and I’m good at it.
A．sign up for B．signed up for C．had signed up for D．has signed up for
10．The party last night was so embarrassing. I wish I ___________.
A．was not invited B．would not be invited
C．had not been invited D．should not have been invited
11．He looked as if he ________ ill for a long time.
A．was B．were C．has been D．had been
12．________ the fog, we should have reached our school.
A．Because of B．In spite of C．In case of D．But for
13．The opening ceremony is a great occasion. It is essential ________for that.
A．for us to be prepared B．that we are prepared
C．of us to be prepared D．our being prepared
14．It is recommended that the machine ______ once a year.
A．must be checked B．was checked C．is checked D．be checked
15．My advice is _______ he _____ to go abroad for further education.
A．that, chooses B．that, chose C．that, choose D．what, should choose
16．Some experts demanded that children ________ enough time for sleep and play.
A．give B．should give C．be given D．given
17．He _____ his potential had it not been for his desire to meet new challenges.
A．would never have realized B．would never realize
C．never realized D．had never realized
18．It’s recommended that you __________ to bed on time.
A．going B．go C．to go D．don’t go
19．Besides, it’s vital that you ________ your table manners.
A．minded B．mind C．to mind D．minds
20．As the day was fine, I made the suggestion ________ for a walk in the park.
A．we go B．we will go C．we should go D．that we go
21．Gorge has a talent for music, but his parents would rather he ______ more on his academic research.
A．focus B．focused C．will focus D．had focused
22．It is suggested that you ________ English as often as possible.
A．may practise B．practise C．can practise D．would practice
23．________for the free ticket, I would not have gone to see films so often.
A．If it is not B．Were it not C．Had it not been D．If it has not been
24．My adviser recommended that I ________ advanced literature.
A．signed up for B．sign up with
C．signed up with D．sign up for
25．I requested that he ________ an hour earlier.
A．came B．comes
C．will come D．should come
26．________ each human being stricken blind and deaf for a few days at some time during his early adult life, it would be a blessing.
A．Is B．Had been C．Should D．Were
27．It seems as if the sun ________ around the earth as it rises in the east and sets in the west.
A．circles B．is circling C．were circling D．had circled
28．Janeˈs pale face suggested that she________ill and her parents suggested that she ________ a medical examination.
A．be; should have B．was; should have C．should be; had D．was;has
29．Leading politicians in the U.S. have sent letters to the American Academy of Arts and Sciences urging that it ________ actions that could be taken by state and local governments and universities ________ national excellence in humanities and social scientific education”.
A．to identify; maintaining B．identifies; to maintain
C．identify; to maintain D．will identify; maintaining
30．The manager put forward a suggestion ________ we _________ an assistant. There is too much work to do.
A．whether; should have B．what; had
C．that; should have D．which; had
31．We wish we________ harder when at school.
A．study B．have study C．will study D．had studied
32．The lady insisted that the young man ________ her wallet and that he________to the police station at once.
A．had stolen; be sent B．should steal; should be sent
C．had stolen; sent D．had stolen; must be sent
33．Had China and other countries involved in the Belt and Road Initiate not worked together, we ________ great achievements in the financial development since 2015.
A．hadn’t achieved B．would not have been achieving
C．did not achieve D．would not achieve
34．— Sorry, Daddy. I am not getting on well with my studies.
— Well. ________ you hadn’t wasted so much time playing online games.
A．As if B．Even if C．If only D．Only if
35．Mary insisted that the car _________ right away.
A．repaired B．to be repaired C．should repair D．be repaired
36．He talks about Roman as if he ________ there before.
A．had been B．was C．were D．has been
37．Her pale face suggested that she ______ ill and her parents suggested that she ______ a medical examination.
A．be; should have B．was; have C．should be; had D．was; had
38．If I had found a good job, I ______ more money.
A．save B．should save C．saved D．would have saved
39．---Where have you been?
---I ________ in the heavy traffic. Otherwise, I ________ here earlier.
A．got stuck; would have come B．got stuck; was
C．have got stuck; would have come D．had got stuck; would come
40．— This area has changed a lot.
— Indeed. But for the anti-poverty policy, people here __________ out of poverty.
A．wouldn’t be lifted B．wouldn’t have been lifted
C．weren’t lifted D．hadn’t been lifted
41．Had we made a better preparation for this exam, we  ______ not  come across so many difficulties now.
A．can B．would C．will D．may
42．If he _____quietly as the doctor instructed, he wouldn’t suffer so much now.
A．lies B．lay C．had lain D．should lie
43．________ he seen you yesterday, he _____________ your book.
A．Has; will have returned B．Had; will have returned
C．Had; would have returned D．Has; would have returned
44．The terrible situation required that the manager ________ present.
A．be B．was C．would be D．shall be
45．He suggested to Jane that she _____ the problem another way, and her expression suggested that she _____.
A．solve; agreed B．solve; agree
C．solved; should agree D．solved; agreed
46．If only I _____________ her _____________ that I book an air ticket in advance. I _____________ a slight change in schedule could have such a strong influence on my travel plan.
A．followed; plan; don’t expect B．have followed; instruction; didn’t expect
C．followed; example; hadn’t expected D．had followed; advice; didn’t expect
47．If he had spent more time practising spoken English before, he ____ able to speak it much better now.
A．would be B．will be C．has been D．had been
48．If you my advice, you such a big mistake.
A．took; would not make
B．had taken; will not make
C．have taken; will not make
D．had taken; would not have made
49．The manager demanded that the workers the task ahead of schedule.
A．accomplishing B．accomplished C．accomplish D．to accomplish
50．It is lucky we booked a room, or we ________ nowhere to stay now.
A．had B．have C．would have D．would have had
51．---Have you heard that Ben and Bill had a fight yesterday?
---Yes. Now they don’t say a single word to each other. It seems as if they ______ each other before.
A．didn’t know B．don’t know C．have never known D．had never known
52．Left to itself, the place ______________ into a prosperous civilized community．
A．was to grow B．were to grow
C．should have grown D．would have grown
53．I'm sure he is keeping something back．I'd rather he ______________ me the truth．
A．tells B．told C．has told D．had told
54．The current population of the plant ______________ fit into the state of Taxes, if Taxes were settled as thickly as New York City．
A．could B．can C．will D．should
55．The proposal Father made this morning did sound feasible ______________ every member of the family ______________ one-third of his or her income in case of emergency．
A．which, set aside B．that, set aside
C．which, sets aside D．that, sets aside
56．Li Ling acted in the party that way as if he__________the host.
A．had been B．is C．should be D．were
57．I would rather she _____ at home next week.
.
A．stay B．have stayed C．stayed D．had stayed
58．______ the truth, he wouldn't have helped her at all.
A．Should Bob know B．Had Bob known
C．Were Bob to know D．Have Bob known
59．You are always sleeping in class. I'd rather you__________my class.
A．are not attending B．were not attending C．won't attend D．not attend
60．I couldn't have made great progress in English__________for your help.
A．had it not been B．should it not be C．did it not been D．were it not
61．If I__________in the bus that fell into the river, I__________with you now.
A．was; would not talk B．were; couldn't talk C．had been; wouldn't have talked D．had been; couldn't be talking
62．His pale face suggested that he__________ill and his teacher suggested that he__________to the hospital at once.
A．should be; send B．was; should send C．was; be sent D．were; be sent
63．How I wish I__________her some help when he asked me to.
A．gave B．did give C．could have given D．have given
64．The pianist listened to our request that he __________ in public again.
A．would play B．must play C．played D．play
65．The teacher demands that she________her test papers within ten minutes.
A．turn in B．hands in C．has turned in D．has handed in
66．I recommend that he ________ a lawyer.
A．sees B．see C．to see D．seeing
67．It has been suggested that the school sports meet _______ till next weekend because of the recent storm.
A．should be put off B．should put off C．put off D．would be put off
68．This is her only request that the room________ after being used.
A．be cleaned B．is cleaned C．would be cleaned D．will be cleaned
69．If I hadn’t been faced with so many barriers and frustrations,I where I am.
A．won’t be B．wouldn’t have been
C．wouldn’t be D．should have been
70．The teacher demand that the words she ________ put in use in one logical sentence.
A．referring to B．referred to be C．referred to D．referring to be












参考答案：
1．D
【详解】考查虚拟和倒装。句意：——我无法告诉你看到玛丽回来我是多么高兴，我是多么急切地和她聊天。——我也会的。毕竟我好久没见到她了。分析语境可知，此处表示的与上文所提到的情况相同，表示与上文情况相同时，应为“so+助动词+主语”结构；根据上文中的描述，说明他前者已经见到了Mary，所以后者表示的是一种与过去事实相反的情况，主句谓语应为“would have done”结构，此处应意为“如果我要是见到她的话，我也会这样的”，由以上可知，此处应使用so would I have been。故选D项。
2．B
【详解】考查虚拟语气。句意：不管她在想什么，她都不应该留个口信就直接走了。分析句子结构可知，本句是虚拟语气，主句带有责备，用shouldn’t have done则表示“本不应该做某事而实际上做了”；whatever引导让步状语从句，从句中表示对过去情况不太肯定的推测，用might+have done。故选B项。
3．C
【详解】考查虚拟语气和时态。句意：我坚持要马上送他去医院，但他坚持说他当时感觉很好。第一空insist表示要求，所接的宾语从句一般用虚拟语气，其虚拟语气的结构为：(should) +原形动词，should可省略，且he与send构成被动关系，故排除A、D选项；第二空根据后文then可知指过去某个时刻动作正在进行应用过去进行时。故选C。
4．B
【详解】考查虚拟语气。句意：昨天，暴风雨耽搁了我们。要不是暴风雨，我们早就到了。首先观察选项，C、D两项后接句子，故排除；根据句意可知，句子表达的是一个与过去事实相反的虚拟语气，而A项If it were not for是对现在或将来的虚拟，因此也排除；根据虚拟语气的用法，but for+短语表达的虚拟语气，如果与现在或将来事实相反，主句谓语动词使用would等情态动词+动词原形；如果与过去事实相反，主句谓语动词使用would等情态动词+have done，本句主句谓语动词使用了would have done，故选B项。
5．B
【详解】考查虚拟语气。句意：建议全体公民共同参与建设文明城市。表示请求、要求、命令或建议等意义的动词所接的宾语从句一般用虚拟语气，其虚拟语气的结构为：(should) +原形动词，should可省略；此处为短语be involved in(参与)。故选B。
6．A
【详解】考查虚拟语气。句意：他们坚持要邀请她。分析句子结构可知，insist作“坚持”讲时，其后宾语从句用虚拟语气，即“should+动词原形”，should可省略，主语she和invite间是被动关系，应该用被动语态。故选A项。
7．C
【详解】考查虚拟语气。句意：如果他学习再努力一点，他就能通过考试了。句中Had he studied harder是一种省略倒装的形式，相当于If he had studied harder，是虚拟语气的用法，与过去事实相反，从句中用的是过去完成时，主句用would +have +过去分词。故选C。
8．B
【详解】考查固定句型和虚拟语气。句意：我们至少要再做两次实验，以确保机器运转良好。句型it be required that表示“要求……”，且that从句使用虚拟语气，即该从句的谓语动词由“should + 动词原形”构成，should也可以省略。故选B。
9．A
【详解】考查虚拟语气。句意：我的导师建议我报高级文学课，因为我喜欢英语，而且我擅长英语。在recommend后的宾语从句中应用（should）do虚拟语气，should可以省略。故选A。
10．C
【详解】考查虚拟语气。句意：昨晚的聚会太尴尬了。我希望我没有被邀请。根据句意可知，wish后的宾语从句应用虚拟语气，表示与过去事实相反，因此谓语时态使用过去完成时，且主语I与invite之间为被动关系，故使用过去完成时的被动语态。故选C项。
11．D
【详解】考查虚拟语气。句意：他看上去好像病了很长时间。根据句意及句中的looked可知，此处描述的是与过去事实相反的情况，应使用过去完成时。故选D项。
12．D
【详解】考查介词短语辨析。句意：要不是大雾，我们本应该到了学校。A.Because of由于，因为；B.In spite of 尽管；C.In case of以防，万一；D.But for 要不是，but for通常用于含蓄条件句中，相当于if条件句的用法，主句中使用虚拟语气。根据后句“we should have reached our school（我们本应该到了学校）”可知，要不是大雾，我们本应该到了学校。故选D。
13．A
【详解】考查虚拟语气及固定句式。句意：开幕式是一个伟大的时刻。我们必须为此做好准备。A.for us to be prepared让我们做好准备；B.that we are prepared我们准备好了；C.of us to be prepared我们要做好准备；D.our being prepared我们做好准备。虚拟语气用于主语从句中，it is essential+that从句，从句的谓语动词应用（should）+动词原形，should可省略。故选项B不对；固定句式：it is+形容词+of/for sb +to do sth.而essential后面应用for。故选A。
14．D
【详解】考查虚拟语气。句意：建议每年对机器进行一次检查。根据句型和句意可知，这里考查it is recommended that+ 主语从句，在这个主语从句中要用虚拟语气， 动词形式为（should)+ 动词原形， should 可以省略。故选D项。
15．C
【详解】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。chooses选择；第一个设空处引导表语从句，从句不缺成份，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”should可省略，故第二个设空处应为(should) choose。故选C。
16．C
【详解】考查虚拟语气。句意：一些专家要求给孩子们足够的时间睡觉和玩耍。动词demand后接that从句时，从句中谓语动词用“should+动词原形”，should可省略，孩子们和给时间是被动关系，用be+过去分词。故选C。
17．A
【详解】考查虚拟语气。句意：如果不是因为他渴望迎接新的挑战，他就不会实现他的潜能。分析句子结构可知，本句考查if引导的条件句的虚拟，省略if倒装的情况，根据语法规则可知，从句中谓语动词用过去完成时，主句谓语动词应用would have done；分析本句可知，空格处应为主句谓语部分且表示对过去情况的虚拟。故选A。
18．B
【详解】考查虚拟语气。句意：建议你按时睡觉。句型It’s recommended that+虚拟语气，从句谓语动词用should+动词原形，should可以省略。故选B。
19．B
【详解】考查动词虚拟语气。句意：此外，你应该注意餐桌礼仪，这是很重要的。分析可知，vital 后that引导的从句要用虚拟语气，即“It’s vital that 主语 + (should) do”句型， should 可以省略，故谓语动词应用动词原形。故选B项。
20．D
【详解】考查同位语从句和虚拟语气。句意：因为天气晴朗，我就建议我们去公园散步。根据句子结构和意思可知，名词suggestion后面是用来解释它的具体内容，所以是同位语从句，从句中基本成分完整，不需要意思连贯，所以用连词that引导，不能省略；表示“建议”意思的名词suggestion的相关从句的谓语要用should+动词原形的虚拟语气结构，should可以省略。故选D。
21．B
【详解】考查虚拟语气。句意：Gorge在音乐方面有天赋，但他的父母宁愿他专注于学术研究。would rather后的从句用虚拟语气；结合语境可知，此处与现在事实相反，应用一般过去时。故选B。
【点睛】
22．B
【详解】考查虚拟语气。句意：建议你尽可能多地练习英语。It is suggested that...有人建议……，其中that引导的主语从句通常用“should+动词原形”的虚拟语气，其中的should通常可以省略。故选B。
23．C
【详解】考查if引导的非真实条件句和部分倒装。句意：如果不是因为有这张免费票，我就不会去看电影了。此处是if引导的非真实条件句，与过去的事实相反，所以if条件句用过去完成时，且if省略时，则从句用部分倒装，把助动词had提到主语的前面。故选C。
24．D
【详解】考查动词短语辨析和虚拟语气。句意：我的学校顾问建议我选高等文学课程。根据句子结构可知，这是考查动词recommend后面宾语从句的谓语动词要用虚拟语气（should）+动词原形的结构。sign up with 的意思是注册、签约，sign up for的意思是报名参加；学生会报名；注册，选课等。根据句子意思可知，这句话需要选课的意思。故选D。
25．D
【详解】考查虚拟语气。句意：我要求他提前一小时来。动词request后的宾语从句一般用虚拟语气，谓语部分为：should+动词原形，should可以省略，故选D。
26．D
【详解】考查虚拟语气和倒装。句意：如果每个人在他成年早期的某个时候失明或失聪几天，这将是一件幸事。根据would be并结合句意，观察选项可知，句子运用虚拟语气，对一般情况的相反假设，条件部分用一般过去时，be stricken构成被动语态，表示虚拟，be动词用were，进行部分倒装，were置于句首，首字母大写。故选D项。
27．C
【详解】考查虚拟语气。句意：太阳从东方升起，从西方落下，好像是绕着地球转。根据客观事实可知，地球是围绕太阳转的，因此句子是虚拟语气，描述与客观事实相反的情况，由seems可知，句子是一般现在时，因此空格处是描述与现在相反的事实，时态往过去推一步，由后面的as it rises in the east and sets in the west可知，句子表示“当太阳从东方升起，从西方落下，好像它是绕着地球转”，因此空格处是过去进行时，无论主语是单数还是复数，虚拟语气中的be动词都用were，因此空格处是were circling，故选C。
28．B
【详解】考查时态和虚拟语气。句意：她苍白的脸色表明她病了，她父母建议她做一次体格检查。前半句是that引导的宾语从句，主句动词suggested表示“表明”，主句是一般过去时，从句应该也用一般过去时。后半句suggest表示“建议”，此处宾语从句应用虚拟语气，即should+动词原形，所以第二空应填should have，故选B项。

29．C
【详解】考查谓语动词、虚拟语气和非谓语动词。句意：美国的主要政治家已致信美国艺术与科学学院，敦促其确定州、地方政府和大学可以采取的行动，以保持国家在人文和社会科学教育方面的卓越。”第一空涉及一个urge引导的宾语从句，表示“敦促”，从句的谓语需要用“should加上一般现在时”，其中should还可以省略，所以填identify。第二空涉及一个非谓语动词的选择，该句谓语为identify，且根据句意，此空表目的，所以应用maintain的不定式to maintain。故选C项。
30．C
【详解】考查同位语从句和虚拟语气。句意：经理建议我们应该有一个助手。要做的工作太多了。第一空，引导同位语从句，从句中不缺少成分，句意完整，故用that引导；第二空，suggestion后的同位语从句中谓语动词用should加动词原形。故选C。
31．D
【详解】考查虚拟语气。句意：我们要是在学校时学习更努力就好了。wish后的宾语从句应用虚拟语气，结合语境和when at school判断此处是与过去事实相反，应用过去完成时。故选D。
32．A
【详解】考查动词时态和虚拟语气。句意：这位女士坚持说那个年轻人偷了她的钱包，要马上把他送到警察局去。动词insist表示“坚持说，坚持认为”时，其后宾语从句不用虚拟语气，但表示“坚持要求，坚持主张”时，其后宾语从句要用虚拟语气，形式为should加动词原形或直接用动词原形。根据句意可知，在第一空，女士坚持认为年轻人偷了她的钱包，不用虚拟语气，“偷钱包”这动作已经发生，应用过去完成时态had stolen，第二空，女士坚持要求年轻人被送到警察局，应用虚拟语气，且“被送到”有被动意义，应用被动语态，所以用(should)be sent。故选A项。
33．B
【详解】考查虚拟语气。句意：如果中国和其他参与“一带一路”倡议的国家没有共同努力，我们自2015年以来就不会在金融发展方面取得巨大成就。分析句子可知，题干中考查虚拟条件句，逗号前面是省略了if的虚拟条件句，从句中用了过去完成时，是与过去事实相反的假设，主句中是对已经发生过去的且还在进行中的事件的虚拟，需要用“would/should/could/might have been doing”。故选B项。
34．C
【详解】考查虚拟语气的用法。句意：——对不起，爸爸。我的学习成绩不好。——哦，要是你没有浪费那么多时间玩网络游戏就好了。A. As if好像，引导方式状语从句；B. Even if即使，引导让步状语从句；C. If only要是…多好，但愿；D. Only if只要，引导条件状语从句。If only接虚拟语气，表示对过去情况的假设。故选C项。
35．D
【详解】考查虚拟语气。句意：玛丽坚持要马上把汽车修好。根据句意可知，insist意为“坚决主张”，其后的宾语从句中用“should+动词原形”的虚拟语气，should可省略，汽车是被修理，因此空格处用（should）be repaired，故选D。
36．A
【详解】考查虚拟语气。句意：他说起罗马，好像他以前去过似的。此处是as if引导的方式状语从句，根据before可知，此处表示与过去的事实相反的假设，从句谓语用过去完成时。故选A。
37．B
【详解】考查时态和虚拟语气。句意：她苍白的脸表明她病了,她的父母建议她去体检。第一个 suggest是“表明，显示”的意思，后面的be动词视整句时态而定，根据主句时态可知用一般过去时。第二个 suggest是“建议”的意思，后接的宾语从句一般用虚拟语气，其虚拟语气的结构为：( should)+原形动词，should可略。故选B。
38．D
【详解】考查虚拟语气。句意：如果我找到一份好工作，我会存更多的钱。本句是由If引导的非真实条件句，用了虚拟语气，从句谓语had found用过去完成时，说明整个句子与过去事实相反，主句谓语用would have done形式，save (存钱)。故选D项。
39．A
【详解】考查时态和虚拟。句意：——你去哪了？——我刚在路上堵车了。不然我早就应该到了。结合问句句意可知问得是过去，要是用一般过去时，答句中出现了otherwise引，为含蓄虚拟语气，表示与过去的事实相反，用 would have done 的结构。故选A项。
40．B
【详解】考查虚拟语气。句意：——这个地区发生了很大的变化。——的确如此。要不是脱贫政策，这里的人们就不会摆脱贫困。A. wouldn’t be lifted将不会摆脱；B. wouldn’t have been lifted本不会摆脱；C. weren’t lifted不会摆脱；D. hadn’t been lifted不会已经摆脱。结合语意，but for表示“要不是”，lift out of poverty表示“摆脱贫困”，句子表示要不是脱贫政策，这里的人们摆脱了贫困，句子表示与过去的事实相反，应使用虚拟语气，句子谓语使用would have done形式。故选B项。
41．B
【详解】考查虚拟语气。句意：如果我们为这次考试做好更好的准备，我们现在就不会遇到这么多困难了。这是一个错综条件句的虚拟语气，主句表示和现在相反，主句谓语用would/ should / could/ might + 动词原形。故选B项。
42．C
【详解】考查虚拟语气。句意：如果他按照医生的指示安静地躺着，他现在就不会那么痛苦了。根据句意，if引导的条件句，从句是对过去情况的一种假设，主句是对现在情况的虚拟，表明“他过去没有听医生的，导致现在很痛苦”。从句表达对过去情况假设时，谓语用过去完成时态。故选C。
43．C
【详解】考查虚拟语气。句意：如果他昨天见到你，他会还你书的。根据句意可知，句子为与过去事实相反的假设，应用虚拟语气，主句应用“主语+should/would/could/might+have+过去分词”，故空格二应用“would have returned”；从句应用“If+主语+had+过去分词”，句中省略了If，这时要把had提到句首，变为倒装句式，故空格一应用“Had”，如不省略If，句子为“If he had seen you yesterday”。故选C项。
44．A
【详解】考查虚拟语气。句意：这个糟糕的情况是要求经理在场。在表示建议、要求、命令类的词语后跟的名词性从句中，从句谓语动词要使用should+动词原形的结构，should可以省略。此处为动词required(要求)所带的宾语从句，在宾语从句中谓语动词要使用should be，将should省去之后，谓语动词为be。故选A。
45．A
【详解】考查虚拟语气/宾语从句/时态。句意：他建议Jane用另一种方式解决这个问题，她的表情表明她同意了。suggest意为“建议”时，其后that引导的宾语从句的谓语应用should+动词原形，should可以省略，所以排除C，D选项；suggest意为“表明”时，宾语从句用陈述语气，时态与主句一致，由主句谓语suggested可知，时态为一般过去时，故选A项。
46．D
【详解】考查虚拟语气和时态。句意：我要是听从她的建议提前订机票就好了。我没想到日程上的一点变化会对我的旅行计划产生如此大的影响。if only（但愿/如果……就好）句子中用虚拟语气，由句意可知，是对过去的虚拟，时态用过去完成时（had done），此处表建议，第二空用advice，第三空“没想到”是过去的一种事实，用一般过去时。故选D项。
47．A
【详解】考查虚拟语气。句意：如果他以前多花些时间练习英语口语，现在就能说得好多了。结合语境，此处为错综时间条件句，根据before可知，if引导的条件状语从句表示与过去事实相反，使用与过去事实相反的虚拟语气，谓语动词使用过去完成时，主句中的时间状语是now，使用与现在事实相反的虚拟语气，谓语动词使用would/should/might/could+动词原形。故选A。
48．D
【详解】考查虚拟语气。句意：如果你听了我的劝告，你就不会犯这么大的错误了。根据句意“要是你听取我的意见”可知，句子是对过去发生的假设。在虚拟语气中，对过去事实进行虚拟，主句用would/could/might/should(not)+have done的形式，从句用had(not) done的形式。故选D。
49．C
【详解】考查虚拟语气。句意：经理要求工人们提前完成任务。动词demand意为：要求，其宾语从句的谓语动词由“(should)+动词原形”构成，其中should可省略，故选C项。
50．C
【详解】考查虚拟语气。句意：我们很幸运地订到了一间房，不然的话，我们现在就无处可去了。根据题干中的or可知其引导的是含蓄虚拟条件句，相当于if引导的虚拟条件句。根据语境it is lucky we booked a room可知现在订到了房间，再由now提示，可知是对现在情况的假设，所以谓语动词用would/could/might/should do。故选C。
51．D
【详解】考查虚拟语气。句意：——你听说昨天 Ben 和 Bill 打架了吗？——是的。现在他们一句话也不说了。他们好像之前从来不认识对方。as if “好像”，在引导从句时，即可表示对现在、过去时间的虚拟，也可表示对将来时间的虚拟，其后要用虚拟语气。当表示和过去事实相反时，从句用had +过去分词的虚拟语气。根据句中“Ben and Bill had a fight yesterday ”及下文“ before”，可知此处表示和过去事实相反，选项D与题意相符，故选D。
52．D
【详解】考查虚拟语气。句意：如果任其发展，这个地方会发展成一个繁荣的文明社区。此句为隐含条件虚拟语气，且与过去事实相反，所以主句用would/could/should/might + have done。would表示“将会”，should表示“应当”。故选D。
53．B
【详解】考查虚拟语气。句意：我肯定他有所隐瞒。我宁愿他告诉我真相。根据he is keeping something back可知，这是对现在情况的虚拟，would rather后用过去时表示对现在的愿望，故选B。
54．A
【详解】考查虚拟语气。句意：如果能像纽约市那样对税收进行严格的规定，那么目前工厂的工人就能适应纽约州的税收。根据前文“current”及后文“if Taxes were settled ”可知，此处是与现在事实相反的假设。主句中应用could/should/might/would+动词原形。此处表示“能够”应用could。故选A。
55．B
【详解】考查名词性从句和虚拟语气。句意：父亲今天早上提出的建议听起来可行，每个家庭成员都留出三分之一的收入以备不时之需。第一空引导同位语从句，从句不缺少成分且句意完整，用连接词that引导，解释说明名词proposal。proposal表示“建议”时，从句应该使用虚拟语气should+动词原形，should可以省略。故选B。
56．D
【详解】考查as if从句虚拟语气的用法。句意：李岭在晚会上那样表现就好像他是主人一样。分析句子成分可知，“as if he__________the host”为方式状语从句，根据语境， “他是主人”为客观事实相反的假设，谓语动词用一般过去时，如遇系动词则用were，故选D。
57．C
【详解】考查虚拟语气。句意：我宁愿她下星期呆在家里。would rather之后的宾语从句常表示与客观事实不相符的一种愿望，故使用虚拟语气。根据后文next week可知表示现在不能实现的愿望，从句谓语动词用过去式。故选C。
58．B
【详解】考查虚拟语气和省略倒装。句意：如果鲍勃知道真相，他就根本不会帮助她了。根据后文“he wouldn't have helped her at all”可知此处表示与过去事实相反的假设，主句用would+have+过去分词，从句用过去完成时，且虚拟条件句的从句部分若含有were, should 或had，可省略if，再把were, should或had 移到从句的句首，使用倒装句型。故选B。
59．B
【详解】考查虚拟语气。句意：你总是在课堂上睡觉。我宁愿你没来听我的课。would rather后接从句时，从句谓语习惯上要用虚拟语气，表示“现在或将来的愿望”时通常使用一般过去时态，结合语境和选项，只有B项符合，选B。
60．A
【详解】考查虚拟语气。句意：如果没有你的帮助，我不可能在英语方面取得这么大的进步。根据语境可知考查与过去事实相反的虚拟语气，故从句用had + v-ed，had it not been =if it had not been，故选A。
61．D
【详解】考查虚拟语气。句意：如果我在那辆掉进河里的公共汽车里，我现在就不可能和你在这说话了。本题考查错综条件虚拟语气，从句与过去事实相反，所以用had +动词的过去分词；主句与现在事实相反，所以用would/should/could/might +动词原形。故选D。
62．C
【详解】考查时态和虚拟语气。句意：他苍白的脸色表明他生病了，他的老师建议他立刻送往医院。第一个 suggest表示“暗示，表明”，后面从句叙述的是客观事实，且主句为一般过去时，所以一般过去时，表示当时所处的状态；第二个 suggest表示“建议”后面宾语从句要用“should+动词原形”的虚拟语气结构，should可以省略。主语he与send之间为被动关系，所以用被动语态。故选C。
63．C
【详解】考查虚拟语气。句意：我多么希望在他要求我帮助她的时候我能给她一些帮助。wish的虚拟语气，对过去发生的事情表示遗憾或后悔时：主语＋wish(that)＋从句主语＋would/could have＋过去分词。故选C。
64．D
【详解】考查虚拟语气。句意：这位钢琴家听从了我们的请求，再次在公众场合演奏。此处为同位语从句，解释说明request的内容，且request表示“请求”时，所接的同位语从句一般用虚拟语气，其虚拟语气的结构为：(should) +原形动词，should可省略。故选D。
65．A
【详解】考查虚拟语气。句意：老师要求她在十分钟内交试卷。结合选项及空后的her test papers可知，是要交卷。turn in交上， 上交；hand in 交上，提交，从意思上这两个短语均可，demand后的宾语从句常使用虚拟语气，即demand that sb （should）do sth。故选A。
66．B
【详解】考查虚拟语气。句意：我建议他去找个律师。recommend表示“建议”时，所接的宾语从句一般用虚拟语气，其虚拟语气的结构为：(should) +原形动词，should可省略。故选B。
67．A
【详解】考查虚拟语气。句意：由于最近有暴风雨，有人建议学校运动会推迟到下个周末举行。在“It is suggested / insisted / ordered / requested / demanded that +从句”结构中，从句中的谓语动词要用“(should)+动词原形”的形式，且the school sports meet与put off构成被动关系，应用被动语态。故选A。
68．A
【详解】考查虚拟语气和被动语态。句意：她唯一的要求就是房间用完后要打扫。request表示“要求”所接的that引导的同位语从句一般用虚拟语气，其虚拟语气的结构为：(should) +原形动词，should可省略，从句中主语room与clean构成被动关系，应用被动语态。故选A。
69．C
【详解】考查虚拟语气。句意：如果我没有面对那么多的障碍，我就不会有今天的成就。分析句子成分可知，此处是错综时间虚拟语气，根据空后where I am可知，此处是与现在事实相反的假设，主句谓语动词应使用would/could/might/should+do。故选C。
70．B
【详解】考查时态和被动语态。句意：老师要求把她提到的词用在一个合乎逻辑的句子里。此处为定语从句修饰先行词words，先行词在从句中作宾语，故可省略关系词，从句描述过去发生的事情应用一般过去时，故应用referred to；demand表示“要求”时，后跟宾语从句需用虚拟语气，其虚拟语气的结构为：(should) +原形动词，should可省略，word与put构成被动关系，应用被动语态(should) be put。故选B。