高考英语单项选择分类训练：现在完成时

这是一份高考英语单项选择分类训练：现在完成时，共18页。
单项选择
1．The sudden fall in the value of the dollar _____ financial experts.
A．puzzling B．has puzzled C．puzzled out D．puzzles about
2．20 percent of the trees _______ since 1990.
A．is cut down B．are cut down C．has been cut down D．have been cut down
3．This is the first time we a film in the cinema together as a family.
A．see B．had seen
C．saw D．have seen
4．In the past few decades, there ________ a dramatic increase in the number of people who study abroad.
A．is B．was C．has been D．had been
5．Never ______ for school this term so far.
A．I am late B．am I late
C．have I been late D．I have been late
6．He ________ for ten years but she still doesn’t want to leave office.
A．has been in power B．has come to power
C．took office D．came into power
7．My grandfather ________ 20 years ago. I ________ him.
A．has died; have never met B．died; have never met
C．has died; never met D．died; never met
8．— Ken, look at this. It is the second time you ________ such a mistake.
— I’m very sorry, Miss. It ________ again.
A．have made; don’t happen B．made; don’t happen
C．have made; won’t happen D．made; won’t happen
9．The number of people who ________cars ________in the past 20 years.
A．own; increased B．owns; have increased
C．own; has increased D．owns; has been increasing
10．Don’t disturb me. I ______ the letters all morning and ______ ten so far.
A．write; wrote B．am writing; have written
C．was writing; wrote D．have been writing; have written
11．When I first met Bryan I didn’t like him, but I ______ my mind.
A．would change B．was changing
C．had changed D．have changed
12．So far, many a woman, in fact, _______a say in this company’s decision-making.
A．is having B．have had C．has had D．are having
13．They________the possibility of one day competing against each other over the last few months.
A．have discussed B．had been discussing
C．was discussing D．will discuss
14．——________ that letter?   
——Yes, I ________ it when I tidied the drawer.
A．Did you find; have found B．Did you find; has found
C．Have you found; found D．Have you found; have found
15．Never __________ such a wonderful place as Hangzhou.
A．are seeing B．had I seen C．I have seen D．have I seen
16． to deliver the orders as quickly as possible, some couriers pay little regard to traffic rules, and as a result, there a number of terrible traffic accidents in recent years.
A．Needing; have been B．Needed; are
C．Needing; are D．Needed; have been
17．— What’s wrong with you? That’s the fifth cup of coffee you ________ today.
— Nothing serious, Mom. I just feel tired and sleepy.
A．have had B．have C．are having D．had
18．It is the first time that I _______ such delicious food
A．have eaten B．will eat C．eats D．am eating
19．In the past few years all citizens__________efforts to make the town more beautiful and civilized.
A．have made B．made C．have been made D．had made
20．The number of people who own a car ________in the past 10 years.
A．increase B．increased C．has increased D．increases
21．My brother ________in the army for three years.
A．had been B．has joined C．had joined D．has been
22．It is the third time that I ________here.
A．go B．went C．had been D．have been
23．The country life he was used to ________since 1998.
A．has changed B．changed C．will change D．was changing
24．He _______ with us since he returned last year.
A．lives B．has lived C．had lived D．have lived
25．He is the only one of the students who________ the winner of scholarship for 3 years.
A．have been B．is C．has been D．are
26．Here is my note book! I ________ anxious till now and ________ for it a whole day yesterday.
A．am; have been looking B．have been; was looking
C．am; had looked D．have been; had looked
27．It is the first time that he _________ here and now it is high time that he _________ around.
A．comes; should be shown B．has come; was shown
C．came; was shown D．has come; is shown
28．The number of prisoners serving life sentences _________ in the region over the last decade.
A．are falling B．have fallen C．has fallen D．is falling
29．More than 80 percent of the young people in this village ________ to find a job so far.
A．has gone B．went C．goes D．have gone
30．“Chinglish” is grammatically wrong, misspelled English written and spoken by Chinese; however, so popular _________ on the Internet that the phenomenon is generating its own specialists.
A．it has become B．has it become C．it is becoming D．becomes it
31．Congratulations on your winning the championship in the sports meeting! It________ of great use in such training.
A．has been proved B．is proved C．has proved D．proven
32．Here is my note book! I________ anxious till now and ________for it a whole day yesterday.
A．am; have been looking B．have been; was looking
C．am; had looked D．have been; had been looking
33．The movie Dune, ________as a masterpiece of cinematic sci-fi, is an incredible adaptation of Frank Herbert’s 1965’s novel of the same name, and this isn’t the first time that Dune________ for the silver screen.
A．celebrated, was adapted B．celebrated, has been adapted
C．being celebrated, is adapted D．celebrating, has been adapted
34．Tony ____________Chinese in Chengdu for two years. He feels free speaking Chinese with locals now.
A．learns B．is learning C．has learned
35．There are many people downstairs. What do you think ________?
A．to happen B．happening C．is happened D．has happened
36．Mr. Smith, as well as his wife and children, ________ gone abroad.
A．has been B．has been done C．has D．have been done
37．Since the start of their career, there have been plenty of ________, but they still persevere.
A．ins and outs B．ups and downs C．dos and don’ts D．back and forth
38．—The air here is much fresher than before.
—Yes. We ________ a lot of trees in the last few years.
A．have planted B．planted C．are planting D．will plant
39．The teacher as well as the students in our senior high school ________ friendly to me in the past three months.
A．has been B．have been C．was D．were
40．The documentary A Plastic Ocean is so impressive that I ________it several times so far.
A．watched B．watch C．have watched D．will watch
41．The last twenty years ______ the steady improvements in the means of travel.
A．has witnessed B．was witnessed C．witnessed D．is witnessed
42．In recent years, the Everest Summit ______ many climbers trapped in the death zone above 8, 000 metres, unable to move freely and dying from lack of oxygen.
A．witnessed B．was witnessed C．has witnessed D．has been witnessed
43．The book________into thirty languages since it came out in 1973 and it is worth________again and again.
A．has been translated; reading B．had been translated; reading
C．has been translated: to be read D．had been translated; to be read
44．Not once ________ Bob Dylan ever ________ the time to ask himself if his songs are literature.
A．would; have B．did; have C．has; had D．was; had
45．His father ________ the party for more than 50 years.
A．joined B．has joined C．was in D．has been in
46．—It’s ten years since we came here.
—How time flies! We ________ in China for so long.
A．work B．worked C．will work D．have worked
47．It is the third time that the boy________.
A．was late B．has been late C．is late D．had been late
48．This is the first time that we __________ a film in the cinema together as a family.
A．see B．had seen C．saw D．have seen
49．I________ to the West Lake four times, but I will go there again this summer.
A．have gone B．have been C．went D．had gone
50．Great changes _________ in Tongren in the past five years.
A．have happened B．have taken place
C．have been happened D．have been taken place
51．A recent study found that the number of smartphone users ________ sharply over the past five years.
A．has increased B．have increased C．is increasing D．are increasing
52．Listening to loud music at live rock concerts ________ caused hearing loss in some teenagers.
A．are B．is C．have D．has
53．—Have you ever been to Shanghai?
—No. In fact, this is the first time I ______this beautiful city.
A．visit B．visited C．had visited D．have visited
54．—This is the first time I ________ my first picture with my own hands.
—It is time that you ________ a picture for me.
A．took; took B．have taken; took C．took; will take D．will take; have taken
55．Germany is just one of the many EU states that ________ a rise in new cases.
A．has witnessed B．have witnessed C．witnessing D．to witness
56．—Are you terrified, Tom?
—Yes. Never in all my life ______ such a horrible thing.
A．I have seen B．do I see
C．I see D．have I seen
57．－Are you excited now?
－Of course. This is the first time that I ______ in such a beautiful garden city.
A．travel B．will travel
C．would travel D．have travelled
58．The river ______ such heavy pollution already, so it may now be too late to clean it up.
A．has suffered B．has happened C．has offered D．has filled
59．Hello! This is Li Hua. I’m calling to put off the appointment I________ with Dr, Li until next Wednesday.
A．will make B．had made C．have made D．would make
60．It is the first time that they _______ the biggest audiences because they give the parts to young girls _______ old actresses.
A．have had; rather than B．has; other than
C．had; other than D．had had; rather than
61．Great changes ________since you_______.
A．have taken place, have left
B．have been taken place, have left
C．have taken place, left
62．Since Mr. Evans took over the firm last month, he ______ to the busy schedule.
A．adapted B．has adapted C．had adapted D．adapts
63．This is the second time we ________ this question in a test.
A．saw B．see C．will see D．have seen
64．Scarcely _________ since we parted.
A．an hour has passed B．has passed an hour C．has an hour passed D．an hour passed
65．More than one robot ______ been tested out in the trial recently.
A．had B．have C．having D．has
66．Beijing Winter Olympic mascot Bing Dwen Dwen _____ the hearts of millions worldwide since the Olympics kicked off on February 4, 2022.
A．has won B．will win C．was winning D．had won
67．Facial recognition technology employed in office buildings ______ the time it takes the security staff ______ routine safety check.
A．have reduced; performing B．has reduced; performing
C．has reduced; to perform D．have reduced; to perform
68．We ________each other since we met last time.
A．haven’t seen B．didn’t see C．hadn’t seen D．don’t see
69．Great changes ________ in the town since 1988.
A．have taken place B．have been taken place
C．has taken place D．has been taken place
70．I love coming here and seeing my family and all the friends I ______ over the years.
A．made B．was made C．have made D．am made






















参考答案：
1．B
【详解】考查谓语动词和时态。句意：美元突然贬值，财经专家无不大伤脑筋。分析句子，句中缺少谓语动词，同时选项中puzzle是及物动词，意为“使……困惑”，后直接跟宾语，不需要接介词。puzzle out为固定短语，意为“推测出”不符合题意。故选B。
2．D
【详解】考查时态和主谓一致。句意：自1990年以来，20%的树木被砍伐。由since 1990可知，句子用现在完成时，当分数作主语时，谓语动词的单复数要根据of后的名词的单复数来确定，of后面的名词trees为复数，助动词应用have。故选D。
3．D
【详解】考查现在完成时。句意：这是我们第一次作为一家人一起在电影院看电影。A. see是动词原形；B. had seen是过去完成时；C. saw是一般过去时；D. have seen是现在完成时。在This/It is the＋序数词＋time that...结构中，从句用现在完成时。故选D项。
4．C
【详解】考查谓语动词。句意：在过去的几十年里，出国留学的人数急剧增加。分析句子可知，此处应为there be句型，此空为谓语动词，根据时间状语in the past few decades可知，此处应使用现在完成时态，且句子主语为a dramatic increase为单数名词，所以谓语为单数。故选C项。
5．C
【详解】考查时态和倒装结构。句意：到目前为止，我这学期上学从未迟到过。根据时间状语so far可知，用现在完成时。否定词Never位于句首，主句用部分倒装结构。故选C。
6．A
【详解】考查时态和动词短语辨析。句意：他已经掌权10年了，但是她仍然不想离开办公室。由句中时间段ten years可知动词应是表示状态动词的完成时。be in power表状态，come to power表动作，且主语为He，故应填has been in power，故选A项。
7．B
【详解】考查动词时态。句意：我祖父20年前去世了。我从未见过他。第一空根据20 years ago可知，句子陈述过去的一个动作，应用一般过去时；第二空表示对现在的影响，应用现在完成时。故选B。

8．C
【详解】考查时态和主谓一致。句意：——Ken，看这个。这是你第二次犯这样的错误了。——很抱歉，Miss，不会再发生了。“It is the+序数词+ time (that) sb. have/has done sth.”是固定句型，意为“这是某人第几次做某事”，主语是you，因此第一空是have made；根据语境可知，第二空所在句子表示“不会再发生了”，指的是将来不会发生，因此时态用一般将来时，因此第二空是won’t happen。故选C。
9．C
【详解】考查主谓一致及时态。句意：在过去的20年里，拥有汽车的人数增加了。第一空是定语从句的谓语动词，从句主语who指代people，谓语动词应用复数形式；第二空是主句的谓语动词，主语是the number of people，谓语动词使用第三人称单数形式，由in the past 20 years可知，应用现在完成时，助动词使用has。故选C。

10．D
【详解】考查动词时态语态。句意：不要打扰我。我整个上午都在写这些信，到目前为止已经写了十封信了。根据句意和all morning可知，空一的动作表示从过去一直到现在的一段时间内一直进行的动作，用现在完成进行时，根据so far可知，空二动作表示过去发生的动作对现在造成的影响和结果，用现在完成时，故选D。
11．D
【详解】考查动词时态的用法。句意：当我第一次遇到布莱恩的时候，我不喜欢他，但是我（现在）改变了主意。A项would change 是过去将来时，表示从过去的某一时间来看将来要发生的动作或呈现的状态；B项was changing是过去进行时，表示过去某时正在进行的状态或动作；C项had changed是过去完成时，指动作发生在过去的过去，C项的动作发生在met之前，在这里是不符合逻辑的；D项have changed是现在完成时，指的是已经发生的动作对现在产生的影响或结果。根据句意“当我第一次遇到布莱恩的时候，我不喜欢他，但是我（现在）改变了主意”断定，转折连接词but后面的句子强调的是作者现在的看法，即改变了过去的看法“我第一次遇到布莱恩的时候，我不喜欢他”，对现在的影响是“现在喜欢布莱恩了”，故选D项。
12．C
【详解】考查时态和主谓一致。句意：事实上，到目前为止，很多女性在公司的决策中都有发言权。根据时间状语So far可知，用现在完成时。“many a +单数名词”作主语，谓语动词应该用第三人称单数形式。故选C。
13．A
【详解】考查时态。句意：在过去的几个月里，他们一直在讨论有一天相互竞争的可能性。根据所给句子中的时间状语“over the last few months”可知，此处表达“动作从过去一直持续到现在”，应用现在完成时。故选A。
14．C
【详解】考查时态。句意：——你找到那封信了吗?——是的，我在整理抽屉的时候发现的。根据句意分析句子可知，第一个句子应该用现在完成时的一般疑问句来询问一种结果。根据第二个句子中时间状语从句中的tidied可知，“发现”这个动作是过去的一个动作，所以应该用一般过去时。故选C项。
15．D
【详解】考查动词时态。句意：我从来没有见过杭州这样美妙的地方。分析句子结构可知，否定词位于句首时，句子使用部分倒装结构，即将助动词、系动词或者情态动词提前到主语前面，结合句意可知，此处描述的是现在的情况，应使用现在完成时态，故将have放在主语I的前面。故选D项。
16．A
【详解】考查非谓语动词和时态。句意：为了尽快送出订单，一些快递员几乎不遵守交通规则，因此，近年来发生了许多可怕的交通事故。分析句子，句中的pay是谓语动词，第一空应该使用非谓语动词。some couriers与need之间是主动关系，使用现在分词作状语，故用needing。同时句中的and为并列连词，连接前后简单句，后半句中的in recent years意为“近年来”为现在完成时的时间标志，a number of terrible traffic accidents意为“许多可怕的交通事故”为主语是复数。故使用have been。故选A。
17．A
【详解】考查时态。句意：——你怎么了？这是你今天喝的第五杯咖啡。——没什么大不了的，妈妈。我只是感到疲倦和困倦。该空作定语从句谓语，动作从过去发生，一直持续到现在，用现在完成时。故选A项。
18．A
【详解】考查时态。句意：这是第一次我吃到这么美味的食物。A. have eaten已经吃（现在完成时）；B. will eat将会吃（一般将来时）；C. eats吃（一般现在时）；D. am eating正在吃（现在进行时）。分析句子结构，本句使用固定句型It is the first time that...，表示“这是第一次……”，其中that从句应用现在完成时。故选A项。
19．A
【详解】考查时态和主谓一致。句意：在过去的几年里，所有的市民都在努力使这个城镇变得更加美丽和文明。由“In the past few years”可知，句子时态用现在完成时，主语citizens是复数，因此空格处是have made，故选A。
20．C
【详解】考查动词时态。句意：在过去10年里，拥有汽车的人数有所增加。空处应填谓语动词的形式，由时间状语in the past 10 years可知应用现在完成时，句子主语为The number，谓语动词应用单数形式。故选C项。
21．D
【详解】考查时态。句意：我哥哥参加3年了。for three years是现在完成时的标志，表示一段时间，对应的动词应是延续性动词。而join 短暂性动词，不与一段时间连用。be+介词短语通常可以表示状态的持续，故选D。
22．D
【详解】考查时态。句意：这是我第三次到这儿。固定句型it is the first/second/third...time that...“是某人第几次做某事”中，从句要用现在完成时，主语是I，助动词用have。故选D。
23．A
【详解】考查时态和主谓一致。句意：他习惯的乡村生活自1998年以来发生了变化。“he was used to”是定语从句，主语是The country life，是单数，由since 1998可知，句子时态是现在完成时，因此空格处是has changed。故选A。
24．B
【详解】考查时态。句意：自去年回来以来，他一直和我们住在一起。由文中 since 可知，主句应用现在完成时，且主语He为第三人称单数形式，所以应用has lived。故选B项。
25．C
【详解】考查时态和主谓一致。句意：他是这些学生中唯一一个连续三年获得奖学金的学生。分析句子结构可知，空处为定语从句的谓语动词，根据 时间状语“for 3 years”可知，定语从句为现在完成时态；who指代先行词“the only one ”，在定语从句中作主语，为第三人称单数形式。故选C。
26．B
【详解】考查动词时态。句意：我的笔记本在这儿！我昨天找了一整天，一直焦急到现在。第一空根据空后关键词till now意为“直到现在”可知，“焦虑”的心情从过去一直发生到现在，为现在完成时关键词，故需用现在完成时态；第二空根据后文a whole day yesterday可知，强调的是一个持续的状态，表示“昨天一天都在找”，故用过去进行时。故选B项。
27．B
【详解】考查固定句式的用法。句意：这是第一次来这里，现在到了他被领着参观的时间了。A.comes来; should be shown展示；B.has come来; was shown展示；C.came来; was shown展示；D.has come来; is shown展示。这里是固定句式 It is the first time that…have done…，如果is换成was ，that后的从句的谓语动词用had done；it is high time that…did/should do,这里的should不能省略，这里是短语show sb around领某人参观；第二空因为he与show之间是被动关系，故用被动语态。故选B。
28．C
【详解】考查时态和主谓一致。句意：在过去十年中，该地区被判无期徒刑的囚犯数量有所下降。根据时间状语 over the last decade可知，用现在完成时，主语The number of+复数名词，表示“……的数量”，谓语动词用单数形式。故选C。
29．D
【详解】考查时态和主谓一致。句意：到目前为止，这个村子80%以上的年轻人都去找工作了。根据时间状语“so far”可知，句子使用现在完成时。主语“More than 80 percent of the young people”表示复数含义，谓语动词也用复数。故选D。
30．B
【详解】考查时态和倒装句。句意：“中式英语”在语法上是错误的，中国人写的和说的英语拼写错误；然而，这一现象在互联网上非常流行，甚至产生了专门研究这一现象的专家。分析句子的结构可知，该句为so+adj. / adv.位于句首时的部分倒装；根据“the phenomenon is generating its own specialists(现象甚至产生了专门研究这一现象的专家)”，可知是过去所做的事情对现在的影响，应用现在完成时，故将助动词has置于主语it之前。故选B。
31．C
【详解】考查时态和主谓一致。句意：祝贺你在运动会中获得冠军！事实证明，它在这种训练中非常有用。prove意为“证明是”，作不及物动词，根据语境可知，“事实已经证明，它在这种训练中非常有用”，空格处时态用现在完成时，主语It是第三人称单数，因此空格处是has proved。故选C。
32．B
【详解】考查时态。句意：我的笔记本在这儿！我一直着急到现在，昨天找了一整天。第一空根据后文till now可知应用现在完成时，故排除A、C选项；第二空根据后文“ a whole day yesterday”可知，表示过去在某一时间段正在发生的动作，应用过去进行时。故选B。
33．B
【详解】考查非谓语动词和现在完成时的被动语态。句意：电影《沙丘》 ，作为电影科幻的杰作，是对弗兰克·赫伯特1965年同名小说的不可思议的改编，而且这也不是第一次将《沙丘》搬上银幕。分析可知， ________as a masterpiece of cinematic sci-fi在句中为后置定语，修饰句子主语the movie Dune，动词celebrate与句子主语为逻辑动宾关系，所以空处要用过去分词；第二空涉及固定句式：It is the first time that从句，意为“是第一次做……”，从句要用现在完成时。结合选项，选项B符合题意，故选B。
34．C
【详解】考查时态。句意：托尼在成都学汉语已经两年了。他现在和当地人说中文很自由。结合句中时间状语for two years和语境可知，此处强调过去动作对现在造成的影响，应用现在完成时。故选C。
35．D
【详解】考查时态。句意：楼下有很多人。你认为发生了什么事？分析句子可知，“do you think”为插入语，空格处应用谓语动词，排除“A”和“B”，“happen”为不及物动词，没有被动语态，排除“C”，根据句意和句中“are”可知，句中指从过去到现在为止发生了什么事，应用现在完成式，故空格处应填“has happened”。故选D项。
36．C
【详解】考查主谓一致和时态语态。句意：史密斯先生连同他的妻子和孩子都出国了。设空处在句中作谓语，此处表示“已经出国”，主谓之间为主动关系，时态应用现在完成时have/has done；其主语为Mr. Smith，单数形式，此处属于就远原则，故谓语也用单数，句中已有gone，故设空处填has即可。故选C项。
37．B
【详解】考查固定短语辨析。句意：自从他们的职业生涯开始，经历了很多起起伏伏，但他们仍然坚持不懈。A. ins and outs进进出出；B. ups and downs起起伏伏；C. dos and don’ts行为准则；D. back and forth来回。根据上文“Since the start of their career”指职业生涯的起伏，故选B。
38．A
【详解】考查时态。句意：——这里的空气比以前新鲜多了。——是的。过去几年我们种了很多树。由“in the last few years”可知，句子时态用现在完成时，故选A。
39．A
【详解】考查时态和主谓一致。句意：在过去的三个月里，我们高中的老师和学生都对我很友好。根据句中时间状语in the past three months可知，用现在完成时。as well as连接两个主语时，谓语与前面的主语保持一致。主语The teacher 为单数，所以谓语动词用has。故选A。
40．C
【详解】考查时态。句意：纪录片《塑料海洋》如此令人印象深刻，以至于到目前为止我已经看过它好几次了。分析句子结构，空处在that引导的结果状语从句中作谓语，根据时间状语so far可知，从句应用现在完成时，即have watched。故选C项。
41．A
【详解】考查时态。句意：在过去的二十年中，交通工具有了稳步的改善。根据句意和选项中的动词witness可知，该题中witness的意思是“是发生......的地点（或时间、组织等）；见证”，这时句子的主语多是表示时间或地点的名词，且用主动语态；由句子的主语是the last twenty years可知，句子表示从过去到现在见证了，句子应该用现在完成时。故选A项。
42．C
【详解】考查时态。句意：近年来，珠穆朗玛峰峰顶见证了许多登山者被困在8000米以上的死亡地带，无法自由行动，最终死于缺氧。根据时间状语In recent years，谓语动词应用现在完成时，主语为the Everest Summit，故助动词为has。设空处应用has witnessed，作谓语。故填has witnessed。故选C项。
43．A
【详解】考查时态和非谓语动词。句意：这本书自1973年出版以来已被翻译成30种语言，值得一读再读。根据时间状语since it came out in 1973可知，用现在完成时。be worth doing sth.值得做某事。故选A。
44．C
【详解】考查倒装句式。句意：鲍勃·迪伦(Bob Dylan)从来没有时间问自己，他的歌是不是文学作品。分析句式结构可知，否定副词not位于句首，句子要使用部分倒装，再根据句中once和ever可知，句子时态应该用现在完成时。故选C项。
45．D
【详解】考查时态。句意：他父亲入党已经50多年了。根据后文for more than 50 years可知用现在完成时，形式为have/has+动词的过去分词。join是一个瞬间动词，不能和完成时态用，所以我们应该用其相对应的一个持续性动词，即be in the party。故选D项。
46．D
【详解】考查时态。句意：——我们来这里已经十年了。——时间过得多快啊！我们在中国工作了这么久。根据后文for so long可知应用现在完成时，主语为we，助动词用have。故选D。
47．B
【详解】考查固定句型。句意：这是这个男孩第三次迟到了。It is the first/second…time that…是固定句型，意为“第一次或第二次做某事”，从句中应用现在完成时。故选B。
48．D
【详解】考查时态。句意：这是我们全家第一次在电影院看电影。This is the first time that...“这是某人第一次做某事”，that从句中要用现在完成时态。故选D。
49．B
【详解】考查时态。句意：我去过西湖四次，但是今年夏天我将再去那里。根据four times可知表示“去过”西湖四次了，have been to 表示去过某地（已经回来）。故选B。
50．B
【详解】考查动词和时态。句意：铜仁在过去时十年发生了很大的变化。根据时间状语in the last five years可知，此处时态用现在完成时，happen和 take place都属于不及物动词，没有被动结构，动词happen指“偶然发生”，短语take place指“有计划发生”，根据句意可知，地方变化是有计划发生。故选B。
51．A
【详解】考查时态和主谓一致。句意：最近的一项研究发现，在过去的五年里，智能手机用户的数量急剧增加。根据时间状语“over the past five years”可知，空处谓语动词需用现在完成进行时态：have/has been doing，表示过去发生的动作一直持续到现在，将有可能继续下去， the number of +可数名词复数作主语，谓语动词需用单数，所以此处助动词需用has。故选A。
52．D
【详解】考查动词时态和主谓一致。句意：在现场摇滚音乐会听吵闹的音乐已经导致一些青少年听力丧失。此处表示过去发生的事情对现在产生影响，使用现在完成时，排除A项和B项，主语为动名词短语，助动词用has。故选D。
53．D
【详解】考查固定句型和时态。句意：——你去过上海吗？——没有。事实上，这是我第一次参观这么漂亮的城市。此处为固定句型：it is +the first/second...time (that) sb. have/has done“是某人第几次做某事”，that引导的定语从句用现在完成时，主语是I，助动词用have。故选D。
54．B
【详解】考查时态。句意：——这是我第一次自己拍照。——你该给我照张相了。短语：take a picture照相，根据句中“This is the first time+现在完成时…”这一句型，可知其所在句的从句要使用现在完成时；It is time that是……的时候了。该句型是常用语虚拟语气，从句中要用一般过去时，结合选项，故选B。
55．B
【详解】考查动词时态。句意：德国只是见证了新病例上升的许多欧盟国家之一。that引导定语从句，后面缺少谓语动词，可以排除C 、D。“见证”发生在is前，用现在完成时，that指代EU states，是复数，故选B。
56．D
【详解】考查倒装句和时态。句意：——你害怕吗，Tom？——是的，我一生中从来没有见过如此可怕的事情。否定副词never位于句首，句子应用部分倒装，排除A、C项；由“Never in all my life...(我一生中从未……)”可知，句子应用现在完成时I have seen，倒装将have提到I前。故选D项。
57．D
【详解】考查时态。句意：——你现在兴奋吗?——当然。这是我第一次在这样美丽的花园城市旅行。分析句子可知，This is the first time that后接的从句应用现在完成时，即have travelled。故选D项。
58．A
【详解】考查时态。句意：这条河已经遭受了如此严重的污染，所以现在清理它可能已经太晚了。结合语境和时间状语already判断此处应用现在完成时，主语the river是第三人称单数，助动词用has。故选A。
59．C
【详解】考查动词时态。句意：你好！这是李华。我打电话来是想把我和李医生的约会推迟到下周三。根据语境以及“until next Wednesday”可推断，此处表示过去发生的事情对现在产生影响，约会已经预订下来，现在要推迟，故使用现在完成时。故选C。
60．A
【详解】考查时态和短语。句意：这是他们第一次拥有如此多的观众 ，因为他们把角色交给年轻的女孩，而不是老演员。第一空，It is the first time that…句型中，that后面的从句用现在完成时，they后面搭配have done；第二空，rather than“而不是”，other than“除了”，根据语境可知，他们把角色交给年轻的女孩，而不是老演员，用rather than，符合语境。故选A项。
61．C
【详解】考查时态。句意：自从你离开以后，这里发生了很大的变化。由since引导的时间状语从句应用一般过去时，主语通常用现在完成时。故选C。
62．B
【详解】考查时态。句意：自从埃文斯上个月接管该公司以来，他已经适应了繁忙的日程 。根据since引导的时间状语从句可知，主句表示从过去一直延续到现在的动作，用现在完成时，主语为he，助动词用has。故选B。
63．D
【详解】考查时态。句意：这是我们在一次测试中第二次遇到这个问题。此处为固定句型：it/this/that is+序数词+time (that) sb. have/has done，that引导的定语从句应使用现在完成时，主语we是复数，助动词用have。故选D。
64．C
【详解】考查动词时态和部分倒装。句意：我们分手还不到一个小时。根据空后关键词since可知时态应该用现在完成时。再分析句子，本句以scarcely开头，以否定副词开头并加状语放在句首的句子要求部分倒装，本句中 an hour是主语，has passed是谓语，部分倒装，将助动词has提前，所以空处应填has an hour passed。故选C。
65．D
【详解】考查主谓一致和时态。句意：最近，不止一个机器人在试验中进行了测试。“more than one +单数名词”用作主语时，其谓语通常用单数。根据句意“最近”可知，此题应用现在完成时。故选D项。
66．A
【详解】考查动词时态。句意：自从2022年2月4号北京冬奥会开幕以来，北京冬奥会吉祥物冰墩墩已经赢得了数百万世界人民的心。分析句子结构可知，since the Olympics kicked off on February 4, 2022为时间状语从句，所以空处需填主句谓语动词， since从句使用一般过去时，主句应使用现在完成时，表示过去发生的动作对现在的造成影响或结果，所以空处需用has won。故选A项。
67．C
【详解】考查现在完成时态和动词不定式。句意：在办公楼中采用的面部识别技术已经减少了保安人员进行日常安全检查的时间。根据句子结构和句意可知，第一空是谓语动词，表示“已经减少了”用现在完成时态，主语是不可数名词technology，所以谓语动词要用第三人称单数形式has reduced。第二空，固定句型It takeds sb. some time to do sh.(花费某人一段时间去做某事)，其中it是形式主语，用to perform routine safety check作真正的主语。故选C项。
68．A
【详解】考查时态。句意：我们自从上次见面就没见面了。 由时间状语从句“since we met last time”可知，用现在完成时。故选A。
69．A
【详解】考查时态。句意：自1988年以来，这个城镇发生了巨大的变化。根据时间状语“since 1988”可知，句子应用现在完成时，动词短语take place没有被动语态，故选A项。
70．C
【详解】考查动词时态。句意：我喜欢来到这里，看到我的家人和我多年来结交的所有朋友。根据句意和句中over the years可知，句中指多年来结交的所有朋友，指从过去到现在为止结交的所有朋友，应用现在完成时，谓语动词为has/have done，“I”和“have”连用，“make”的过去分词为“made”，故空格处应填“have made”。故选C项。