中小学教育资源及组卷应用平台
专题01 U1现在完成时50题（详解版）
学校:___________姓名：___________班级：___________考号：___________
牛津上海版期中好题精刷系列资料，助力期中冲刺！
向满分说YES！
一、单项选择
1．Maybe it’s a ________ to you, but to me, it’s not funny at all.
A．chance B．secret C．joke D．reason
2．His family ________ towards a greener life since 2020.
A．work B．worked C．will work D．have worked
3．—Have you seen the film The Battle at Lake Changjin
—Yes. I ________ it twice. It is so moving.
A．saw B．have seen C．will see D．see
4．My mother _________ English for nearly 20 years. She likes her job.
A．teaches B．will teach C．is teaching D．has taught
5．The famous writer and actor ________ gone to Shanghai for the show.
A．has B．have C．is D．are
6．Over the past few years, these teenagers ________ hundreds of homeless cats.
A．save B．will save C．have saved D．was saving
7．Zhang Guimei ________ many students in the countryside for more than 20 years.
A．helps B．helped C．has helped D．will help
8．Lily is a helpful girl. She ________ as a volunteer since 2020.
A．will work B．works C．worked D．has worked
9．China ________ many satellites to space since 1970.
A．has sent B．sent C．is sending D．will send
10．My English _______ a lot since I tried my English teacher’s advice.
A．improve B．will improve C．has improved D．improved
11．My father ________ English for twenty-five years in Beijing.
A．teaches B．taught C．has taught D．will teach
12．Jack ________ a lot about Chinese culture since he began to work in Beijing.
A．learns B．learned C．will learn D．has learned
13．The exercise goes ________ the children’s understanding. Give them an easy one.
A．beyond B．with C．for D．to
14．—Hey, can you read out the Chinese on the book cover
—Sure, just a piece of cake. I ________ Chinese since I was 8 years old.
A．learn B．have learnt C．am learning D．learnt
15．All of us ________ great progress since we started junior high school.
A．are making B．made C．will make D．have made
16．It has been three years since my teachers ________ me much help with my study.
A．gives B．gave C．have given D．are giving
17．Tom was ________ to finish making the model plane in an hour, but in fact, it took him two hours.
A．supposed B．regard C．refused D．missed
18．—There is some water on the floor. Go to see if the water in the bathroom is ________.
—OK, mum.
A．going outside B．coming on C．running over D．flowing
19．—Mum, I’m tired of doing too much homework every day.
—Oh, dear, without hard work, you can’t ________ your dream.
A．choose B．encourage C．manage D．achieve
20．I _______ the guitar ever since I was 7 years old.
A．played B．will play C．am playing D．have played
21．I bought a new bike in March. I ________ it for several months.
A．have bought B．has had C．have had D．bought
22．My father goes back to Nanjing for the Spring Festival every year ________ last year because he was busy with his work in Changzhou.
A．including B．since C．except D．till
23．—I ________ the book last year.
—So you ________ it for about half a year.
A．bought; have had B．have bought; had
C．bought; have bought D．have bought; have had
24．The streets were empty _________ a few taxis.
A．except B．besides C．except for D．in addition to
25．The albatross can stay in the sky at sea for days __________.
A．at time B．at a time C．at the time D．for a time
26．Sweden is lovely in summer—cold _________ belief in winter.
A．in B．at C．for D．beyond
27．Mary ________ as a volunteer at a reading program since 2 years ago.
A．worked B．has worked C．is working D．will work
28．It’s nice to see you again. We________each other since 2018.
A．won’t see B．don’t see C．haven’t seen D．didn’t see
29．We have been good friends ________ we met each other for the first time.
A．until B．before C．though D．since
30．International search and rescue (救援) teams have rushed to Turkey to help for the huge earthquakes. China ________ an 82-member China Search and Rescue Team.
A．sends B．was sent C．has sent D．has been sent
31．I ________ great progress in English since I started to read an English story.
A．made B．make C．have made D．will make
32．—How can he find us in such a lonely place
—No problem. He will soon join us. I ________ our exact location to him on WeChat.
A．sent B．will send C．have sent D．was sending
33．—It’s selfless ________ the great man to work on energy projects abroad under the Belt and Road Initiative.
—That’s true. He ________ for POWERCHINA since he graduated from college in 2014.
A．for; worked B．of; has worked C．for; has worked D．of; is working
34．This is the third time that I _______ Beijing but my mother _______ here for two years.
A．visited; has left B．have visited; has been away from
C．visited; has been leaving D．have visited; was away from
35．Kate ________ to dance since she was five years old. So she dances very well.
A．learns B．has learned C．have learned D．will learn
36．I am 30 years old. I am ________ a child.
A．no longer B．not longer C．any longer D．no any longer
37．—Look. This beautiful car is made by BYD in China.
—It’s my dream car, and I ________ to buy one.
A．refuse B．allow C．expect D．push
38．—Lily, ________ you ________ your ticket
—Not yet!
A．did; find B．have; found C．has; found D．do; find
39．The book is wonderful. I ________ it twice.
A．reads B．read C．have read D．am reading
40．It’s nice to see you again. We ________ each other since 2018.
A．won’t see B．don’t see C．haven’t seen D．didn‘t see
41．Since all the guests ________, let’s start our party.
A．arrive B．are arriving C．will arrive D．have arrived
42．—Sam, is Jim in the classroom Mr. Smith is looking for him.
—No, he ________ to the dining hall.
A．goes B．will go C．has gone D．went
43．Mr. Smith ________ to more than 20 countries since 2010.
A．travels B．was travelling C．has travelled D．will travel
44．I enjoy playing football. I ________ football since I was five years old.
A．play B．am playing C．have played D．will play
45．—Sarah, is your mother a teacher
—Yes, she is. She ________ English in China for 12 years.
A．will teach B．is teaching C．taught D．has taught
46．My friend Jack ______ Chinese for two years. He’s more interested in Chinese culture now.
A．learns B．was learning C．has learned D．will learn
47．—Shall I feed the fish for you
—Come on. I ______ them. They are full now.
A．will feed B．was feeding C．feed D．have fed
48．My family ________ a lot of changes in Beijing since we moved here in 2010.
A．experienced B．experiences C．has experienced D．will experience
49．Sam is a good boy ________ his bad temper.
A．except B．besides C．but D．except for
50．—In December 2020, it was announced that esports would ________ in the 2022 Asian Games.
—That’s it! Esports is making its appearance for the first time as a medal event at this year’s Asian Games, ________ League of Legends, a multiplayer online battle arena (MOBA) game.
A．be included; including B．be introduced; included
C．be allowed; includes D．be played; included
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21世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
专题01 U1现在完成时50题（详解版）
学校:___________姓名：___________班级：___________考号：___________
牛津上海版期中好题精刷系列资料，助力期中冲刺！
向满分说YES！
一、单项选择
1．Maybe it’s a ________ to you, but to me, it’s not funny at all.
A．chance B．secret C．joke D．reason
2．His family ________ towards a greener life since 2020.
A．work B．worked C．will work D．have worked
3．—Have you seen the film The Battle at Lake Changjin
—Yes. I ________ it twice. It is so moving.
A．saw B．have seen C．will see D．see
4．My mother _________ English for nearly 20 years. She likes her job.
A．teaches B．will teach C．is teaching D．has taught
5．The famous writer and actor ________ gone to Shanghai for the show.
A．has B．have C．is D．are
6．Over the past few years, these teenagers ________ hundreds of homeless cats.
A．save B．will save C．have saved D．was saving
7．Zhang Guimei ________ many students in the countryside for more than 20 years.
A．helps B．helped C．has helped D．will help
8．Lily is a helpful girl. She ________ as a volunteer since 2020.
A．will work B．works C．worked D．has worked
9．China ________ many satellites to space since 1970.
A．has sent B．sent C．is sending D．will send
10．My English _______ a lot since I tried my English teacher’s advice.
A．improve B．will improve C．has improved D．improved
11．My father ________ English for twenty-five years in Beijing.
A．teaches B．taught C．has taught D．will teach
12．Jack ________ a lot about Chinese culture since he began to work in Beijing.
A．learns B．learned C．will learn D．has learned
13．The exercise goes ________ the children’s understanding. Give them an easy one.
A．beyond B．with C．for D．to
14．—Hey, can you read out the Chinese on the book cover
—Sure, just a piece of cake. I ________ Chinese since I was 8 years old.
A．learn B．have learnt C．am learning D．learnt
15．All of us ________ great progress since we started junior high school.
A．are making B．made C．will make D．have made
16．It has been three years since my teachers ________ me much help with my study.
A．gives B．gave C．have given D．are giving
17．Tom was ________ to finish making the model plane in an hour, but in fact, it took him two hours.
A．supposed B．regard C．refused D．missed
18．—There is some water on the floor. Go to see if the water in the bathroom is ________.
—OK, mum.
A．going outside B．coming on C．running over D．flowing
19．—Mum, I’m tired of doing too much homework every day.
—Oh, dear, without hard work, you can’t ________ your dream.
A．choose B．encourage C．manage D．achieve
20．I _______ the guitar ever since I was 7 years old.
A．played B．will play C．am playing D．have played
21．I bought a new bike in March. I ________ it for several months.
A．have bought B．has had C．have had D．bought
22．My father goes back to Nanjing for the Spring Festival every year ________ last year because he was busy with his work in Changzhou.
A．including B．since C．except D．till
23．—I ________ the book last year.
—So you ________ it for about half a year.
A．bought; have had B．have bought; had
C．bought; have bought D．have bought; have had
24．The streets were empty _________ a few taxis.
A．except B．besides C．except for D．in addition to
25．The albatross can stay in the sky at sea for days __________.
A．at time B．at a time C．at the time D．for a time
26．Sweden is lovely in summer—cold _________ belief in winter.
A．in B．at C．for D．beyond
27．Mary ________ as a volunteer at a reading program since 2 years ago.
A．worked B．has worked C．is working D．will work
28．It’s nice to see you again. We________each other since 2018.
A．won’t see B．don’t see C．haven’t seen D．didn’t see
29．We have been good friends ________ we met each other for the first time.
A．until B．before C．though D．since
30．International search and rescue (救援) teams have rushed to Turkey to help for the huge earthquakes. China ________ an 82-member China Search and Rescue Team.
A．sends B．was sent C．has sent D．has been sent
31．I ________ great progress in English since I started to read an English story.
A．made B．make C．have made D．will make
32．—How can he find us in such a lonely place
—No problem. He will soon join us. I ________ our exact location to him on WeChat.
A．sent B．will send C．have sent D．was sending
33．—It’s selfless ________ the great man to work on energy projects abroad under the Belt and Road Initiative.
—That’s true. He ________ for POWERCHINA since he graduated from college in 2014.
A．for; worked B．of; has worked C．for; has worked D．of; is working
34．This is the third time that I _______ Beijing but my mother _______ here for two years.
A．visited; has left B．have visited; has been away from
C．visited; has been leaving D．have visited; was away from
35．Kate ________ to dance since she was five years old. So she dances very well.
A．learns B．has learned C．have learned D．will learn
36．I am 30 years old. I am ________ a child.
A．no longer B．not longer C．any longer D．no any longer
37．—Look. This beautiful car is made by BYD in China.
—It’s my dream car, and I ________ to buy one.
A．refuse B．allow C．expect D．push
38．—Lily, ________ you ________ your ticket
—Not yet!
A．did; find B．have; found C．has; found D．do; find
39．The book is wonderful. I ________ it twice.
A．reads B．read C．have read D．am reading
40．It’s nice to see you again. We ________ each other since 2018.
A．won’t see B．don’t see C．haven’t seen D．didn‘t see
41．Since all the guests ________, let’s start our party.
A．arrive B．are arriving C．will arrive D．have arrived
42．—Sam, is Jim in the classroom Mr. Smith is looking for him.
—No, he ________ to the dining hall.
A．goes B．will go C．has gone D．went
43．Mr. Smith ________ to more than 20 countries since 2010.
A．travels B．was travelling C．has travelled D．will travel
44．I enjoy playing football. I ________ football since I was five years old.
A．play B．am playing C．have played D．will play
45．—Sarah, is your mother a teacher
—Yes, she is. She ________ English in China for 12 years.
A．will teach B．is teaching C．taught D．has taught
46．My friend Jack ______ Chinese for two years. He’s more interested in Chinese culture now.
A．learns B．was learning C．has learned D．will learn
47．—Shall I feed the fish for you
—Come on. I ______ them. They are full now.
A．will feed B．was feeding C．feed D．have fed
48．My family ________ a lot of changes in Beijing since we moved here in 2010.
A．experienced B．experiences C．has experienced D．will experience
49．Sam is a good boy ________ his bad temper.
A．except B．besides C．but D．except for
50．—In December 2020, it was announced that esports would ________ in the 2022 Asian Games.
—That’s it! Esports is making its appearance for the first time as a medal event at this year’s Asian Games, ________ League of Legends, a multiplayer online battle arena (MOBA) game.
A．be included; including B．be introduced; included
C．be allowed; includes D．be played; included
参考答案：
1．C
【详解】句意：也许这对你来说是个玩笑，但对我来说，一点也不好笑。
考查名词辨析。chance机会；secret秘密；joke玩笑；reason原因。根据“but to me, it’s not funny at all”可知，对我来说，一点也不好笑，因此对于对方来说应该是一个玩笑。故选C。
2．D
【详解】句意：自2020年以来，他的家人一直致力于更环保的生活。
考查时态。work一般现在时；worked一般过去时；will work一般将来时；have worked现在完成时。根据“since 2020”可知用现在完成时。故选D。
3．B
【详解】句意：——你看过电影《长津湖》吗？——是的。我已经看过两次了。太感人了。
考查现在完成时态。根据“Have you seen the film The Battle at Lake Changjin ”和“twice”可知，句子时态应该是现在完成时态，故选B。
4．D
【详解】句意：我妈妈教英语将近20年了。她喜欢她的工作。
考查时态。根据“for nearly 20 years”可知，此句为现在完成时，谓语结构为have/has done。故选D。
5．A
【详解】句意：那位著名的作家兼演员去上海看演出了。
考查时态和主谓一致。根据“gone to”可知，是现在完成时，排除CD；主语“The famous writer and actor”是一个人，故选A。
6．C
【详解】句意：在过去的几年里，这些青少年拯救了数以百计的流浪猫。
考查现在完成时。根据时间状语“Over the past few years”，可知该句为现在完成时，谓语动词为have/has+动词过去分词。故选C。
7．C
【详解】句意：张桂梅20多年来已经帮助了农村的许多学生。
考查现在完成时。helps动词三单形式，用于一般现在时；helped动词过去式，用于一般过去时；has helped用于现在完成时；will help用于一般将来时。根据“for more than 20 years”可知是for+段时间，故要用现在完成时，故选C。
8．D
【详解】句意：莉莉是个乐于助人的女孩。她从2020年开始做志愿者。
考查动词时态。will work一般将来时；works一般现在时；worked 一般过去时；has worked现在完成时。根据“since 2020”可知时态为现在完成时，主语是“she”，后接has+过去分词。故选D。
9．A
【详解】句意：自1970年以来，中国已经向太空发射了许多卫星。
考查现在完成时。根据“since 1970”可知，此处是现在完成时，其结构是have/has + done形式，主语China为单数形式，故助动词应用has。故选A。
10．C
【详解】句意：自从我听了英语老师的建议后，我的英语进步很大。
考查现在完成时。根据“since”可知，句子的时态是现在完成时，表示过去发生的动作持续到现在产生的影响，其谓语动词构成是“have/has done”，主语是“My English”，因此此处用has improved。故选C。
11．C
【详解】句意：我父亲在北京教英语已经二十五年了。
考查动词的时态。根据时间状语“for twenty-five years”可知，句子应用现在完成时。故选C。
12．D
【详解】句意：自从杰克在北京工作以来，他学到了很多关于中国文化的知识。
考查时态。根据“since he began to work in Beijing”可知，该句是since引导的时间状语从句，主句应用现在完成时，结构为have done；主语为“Jack”，助动词用has。故选D。
13．A
【详解】句意：这个练习超出了孩子们的理解。给他们一个简单的。
考查介词辨析。beyond超越；with带有；for为了；to到。根据“The exercise goes … the children’s understanding. Give them an easy one”可知，此处指练习超出了孩子们的理解，go beyond“超越”，故选A。
14．B
【详解】句意：——你好，你能读出书面上的汉字吗？——当然，很容易。自从我八岁我已经学中文。
考查现在完成时。learn一般现在时；have learnt现在完成时；am learning现在进行时；learnt一般过去时。根据since I was 8 years old.可知主句时态是现在完成时， 主语I接have+过去分词。故选B。
15．D
【详解】句意：自从我们开始上初中以来，我们都取得了很大的进步。
考查时态。根据“since we started junior high school”可知，此处是“现在完成时+since+一般过去时”结构，故选D。
16．B
【详解】句意：自从我的老师们在学习上给予我很多帮助以来，已经三年了。
考查含since的现在完成时句型。由“It has been three years since my teachers”可知，此处构成固定句型。“It has been +一段时间+since从句”用于表示“自从做某事已经多久了”。其中主句是现在完成时，since引导的时间状语从句用一般过去时，give的过去式是gave，作从句的谓语。故选B。
17．A
【详解】句意：汤姆本应该在一小时内完成这个模型飞机，但实际上，他花了两个小时。
考查动词辨析。suppose认为；regard把……视为；refuse拒绝；miss错过。此处是固定短语be supposed to do sth“应该做某事”，故选A。
18．C
【详解】句意：——地板上有些水。去看看浴室里的水溢出来了没有。——好的，妈妈。
考查动词短语及动词辨析。go outside外出，往外走；come on快点、开始；run over撞倒、溢出；flow涌流、流通。根据“There is some water on the floor. Go to see if the water in the bathroom…”可知此处是指“水溢出来”。故选C。
19．D
【详解】句意：——妈妈，我厌倦了每天做这么多的家庭作业。——哦，亲爱的，不努力，你就不能实现你的梦想。
考查动词辨析。choose选择；encourage鼓励；manage管理；achieve实现。根据“your dream.”可知，是指实现梦想。故选D。
20．D
【详解】句意：我自从7岁起就弹吉他。
考查动词时态。根据“ever since I was 7 years old.”可知句子是现在完成时，其结构为have/has done。故选D。
21．C
【详解】句意：我在三月买了一辆新自行车。我已经买了它几个月了。
考查现在完成时。have bought已经买了，为瞬间动词；has had已经买了，为延续性动词；have had已经买了，为延续性动词；bought买了，为过去时。根据“for several months”可知，用现在完成时，段时间需用延续性动词。主语为I，为第一人称，故助动词用have。故选C。
22．C
【详解】句意：除了去年，我父亲每年春节都回南京过年，因为他在常州工作很忙。
考查介词辨析。including包括；since自……以后；except除了；till直到。根据“My father goes back to Nanjing for the Spring Festival every year … last year because he was busy with his work in Changzhou”可知，每年春节都回南京过年，除了去年，故选C。
23．A
【详解】句意：——我去年买了这本书。——-所以你已经买了它半年了。
考查动词时态。根据“last year”可知第一空的时态是一般过去时，用动词过去式bought；根据“for about half a year”可知第二空是现在完成时“have/has+动词过去分词”，主语为you，助动词用have，该句带有for短语，应用延续性动词，buy为短暂性动词，have为延续性动词，故选A。
24．C
【详解】句意：街道上空无一人，只有几辆出租车。
考查介词辨析。except除去；besides除了……之外；except for除了；in addition to除了。根据“The streets were empty...a few taxis”可知，此处表示从整体中除去一个细节，一方面，用except for。故选C。
25．B
【详解】句意：信天翁可以一次在海上的天空中待上好几天。
考查介词短语。at time偶尔；at a time逐次，一次；at the time在那时；for a time短时间内。根据“stay in the sky at sea for days”可知是一次可以在空中待好几天。故选B。
26．D
【详解】句意：瑞典的夏天很可爱——冬天却冷得令人难以置信。
考查介词辨析。in在……里面；at在；for为了；beyond超过。根据“cold ... belief in winter.”可知，此处是指冬天冷得难以置信，beyond belief“令人难以置信的”。故选D。
27．B
【详解】句意：玛丽从两年前就开始在一个阅读项目做志愿者。
考查时态。根据“since 2 years ago”可知句子用现在完成时have/has done。故选B。
28．C
【详解】句意：很高兴再次见到你。自2018年以来，我们就没有见过面。
考查动词时态。根据“since 2018”可知，句子时态是现在完成时。故选C。
29．D
【详解】句意：自从我们第一次见面，我们就一直是好朋友。
考查连词辨析。until直到；before在之前；though虽然；since自从。根据“We have been good friends...we met each other for the first time.”可知，此处是“现在完成时+since+一般过去时”结构。故选D。
30．C
【详解】句意：国际搜救队已赶赴土耳其，协助应对特大地震。中国派出了一支82人的中国搜救队。
考查时态。根据“have rushed to...”可知此处表示过去的动作对现在的影响，用现在完成时have/has done，且主语China和send之间是主动关系。故选C。
31．C
【详解】句意：自从我开始读英语故事以来，我的英语进步很大。
考查时态。根据“I...great progress in English since I started to read an English story.”可知，此处为since引导的的时间状语从句，从句为一般过去时，主句时态为现在完成时，谓语用“has/have+过去分词”的结构，主语为I，助动词用have，made为动词过去分词。故选C。
32．C
【详解】句意：——他怎么能在这么偏僻的地方找到我们呢？——没有问题。他很快就会加入我们。我已经把我们的确切位置发微信给他了。
考查动词时态。根据“No problem. He will soon join us.”可知因为已经把定位发过了，所以他会找到的，此处强调过去的动作对现在的影响，应用现在完成时。故选C。
33．B
【详解】句意：——在“一带一路”倡议倡议下，这位伟人在国外从事能源项目工作是无私的。——确实。自2014年大学毕业以来，他一直在中国电建集团工作。
考查介词辨析和现在完成时。固定句式“It is+形容词+of/for sb.+to do sth.”意为“对某人来说做某事怎么样”，介词为for时，形容词常与事物的特征有关；介词为of时，形容词常与人的性格特点有关。根据“selfless”和“the great man”可知，selfless“无私的”属于人的性格特点，第一空应填of；根据“since he graduated from college in 2014.”可知，此句为现在完成时，结构为have/has done。故选B。
34．B
【详解】句意：这是我第三次来北京，但我母亲离开这里已经两年了。
考查动词时态。“This is+序数词+time+that从句”结构中，从句时态用现在完成时，结构为“have/has done”，选项A、C错误；根据时间状语“for two years”可知，第二空时态也用现在完成时。故选B。
35．B
【详解】句意：凯特从五岁起就学会跳舞。所以她跳舞跳得非常好。
考查现在完成时。learns三单；has learned现在完成时；have learned现在完成时；will learn一般将来时。根据“since she was five years old.”可知，用现在完成时，单数名词后谓语动词为has done的形式。故选B。
36．A
【详解】句意：我三十岁了。我不再是个孩子了。
考查副词短语。no longer=not ... any longer“不再”，所以横线上是no longer。故选A。
37．C
【详解】句意：——看。这辆漂亮的车是中国的比亚迪制造的。——这是我梦寐以求的车，我期望买一辆。
考查动词辨析。refuse拒绝；allow允许；expect期待；push推。根据“It’s my dream car,”可知这辆车是说话人梦寐以求的车，所以期待买一辆，故选C。
38．B
【详解】句意：——莉莉，你找到你的票了吗？——还没有！
考查动词时态。根据回答“Not yet!”可知问句应是现在完成时，主语“you”是第二人称，用“have+动词过去分词”的结构。故选B。
39．C
【详解】句意：这本书很棒。我已经读了两遍了。
考查动词的时态。根据“twice”可知，句子用现在完成时态，结构是has/have done。故选C。
40．C
【详解】句意：很高兴再次见到你。我们自2018年以来就没有见过面。
考查现在完成时。根据“since 2018”可知，此句时态应用现在完成时，其否定形式的构成为“haven’t/hasn’t +过去分词”，主语we为第一人称，用haven’t，see的过去分词为seen。故选C。
41．D
【详解】句意：既然所有的客人都到了，我们开始聚会吧。
考查时态。根据“Since all the guests...let’s start our party”可知是既然所有的客人已经到了，故此处表示过去的动作对现在的影响，用现在完成时have/has done。故选D。
42．C
【详解】句意：——山姆，吉姆在教室吗？史密斯先生正在找他。——不，他去了食堂。
考查动词时态。根据“to the dining hall.”可知，这里指去了餐厅，没有回来，是过去的动作对现在产生了影响，应用现在完成时has gone to。故选C。
43．C
【详解】句意：自从2010年以来，史密斯先生已经旅行20多年了。
考查现在完成时。根据“since 2010”可知，此句为现在完成时，其结构为“have/has done”，主语为Mr. Smith，助动词用has，故选C。
44．C
【详解】句意：我喜欢踢足球。我从五岁起就踢足球了。
考查动词时态。根据“...since I was five years old.”可知，since+时间点，时态应使用现在完成时。故选C。
45．D
【详解】句意：——Sarah，你的妈妈是教师吗？——是的。她已经在中国教英语12年了。
考查动词用法。根据“for 12 years”可知，妈妈“教英语”这个动作从过去一直持续到现在，有可能继续持续下去，应使用现在完成时“have/has done”，结合主语为第三人称，所以选用has taught。故选D。
46．C
【详解】句意：我的朋友杰克已经学中文两年了。他现在对中国文化更感兴趣了。
考查时态。根据“for two years”可知句子用现在完成时have/has done。故选C。
47．D
【详解】句意：——我可以给你喂鱼吗？——来吧。我已经喂过它们了。他们现在是饱的。
考查动词时态用法。根据“They are full now.”可知，“喂”这个动作已经结束了，对现在的影响是“鱼是饱的”，所以应使用现在完成时have/has done。故选D。
48．C
【详解】句意：自从我们2010年搬到北京以来，我们家经历了很多变化。
考查动词时态。since+一般过去时的从句，主句用现在完成时结构，故选C。
49．D
【详解】句意：萨姆是一个好男孩，只是脾气不好。
考查介词辨析。except除了，表示从整体中除去一部分，后接的词一般与主语是同类；besides除……之外，表示除了整体之外再加上一部分；but除了，常与某些不定代词或疑问词连用；except for除了，表示从整体中除去一部分，后接的词一般与主语不是同类。根据“Sam is a good boy…his bad temper.”可知，好孩子通常不会有坏脾气，所以除去坏脾气这部分，萨姆才算是好孩子；又因为空后的“his bad temper”与主语“Sam”不是同类，所以此空填“except for”符合要求。故选D。
50．A
【详解】句意：——2020年12月，有消息称电子竞技将被列入2022年亚运会。——就是这样！电子竞技首次作为奖牌项目出现在今年的亚运会上，其中包括多人在线竞技场（MOBA）游戏《英雄联盟》。
考查动词辨析。include包括，动词；including包括……在内，介词；introduce介绍；allow允许；paly玩。由“League of Legends”可知是包括《英雄联盟》，应用介宾短语作状语，空格处填including。故选A。
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