So far the boys have be able to swim across the river．be改为been．题目和参考答案——青夏教育精英家教网—

6．So far the boys have be able to swim across the river．be改为been．

分析到目前为止，这些男孩子已经能够游过河了．

解答答案：be 改为 been．考察现在完成时的谓语动词．根据时间状语So far 可知谓语动词用现在完成时have done，所以 be 改为 been．

点评考查句子改错．
现在完成时的用法：
（1）强调动作是从过去持续到现在，并有可能继续持续下去．
（2）强调对现在的影响或结果，此用法容易和一般过去时混淆．两者的区别是：一般过去时有动作发生的时间点，即过去某一时间发生某一动作；现在完成时则没有，即不强调是哪个时间点发生的动作，而强调过去的动作对现在造成的影响和结果．
（3）在过去不确定的时间里发生的动作，但是结果对现在有影响．

练习册系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：高中英语 来源： 题型：阅读理解

16．Wonderful Museums in CyprusThe Leventis Municipal Museum
It shows the history of the city of Nicosia from prehistory to the present time and covers several traditional buildings on Hippocrates Street No.15-17．The idea of creating a museum memorizing the history of Nicosia was that of the former city leader，Lellos Demetriades．The museum was planned in 1984and finished in 1989．Two years later，the Leventis Museum was honored with the European Museum of the Year Award．The museum aims to contribute to the protection of Nicosia's history．
Opening hours：Tuesday-Suladay （10：00a．m．-16：30p．m．）
Closed：Monday and public holidays
Entrance：Free．The Museum provides equipment for visitors with disabilities．
The Stemi Museum of Village Life
The museum shows the history of Stemi Museum from its foundation to the end of World WarⅡ．Sewing tools and equipment，handkerchief，kitchenware，pots and jars，traditional clothing are some of the exhibitions of this amazing museum．
Open：All year round
Monday to Sunday-October 1to March 31 （10a．m．-4p．m．）
Monday to Sunday-April 1to September 30 （10a．m．-6p．m．）
Free entrance
Marion-Arsinoe Archaeoloigical Museum
The Museum of Marion-Arsinoe is located in Polis Chrysochous．The exhibits are from the ancient city of Marion，renamed Arsinoe in the 3^rd century BC．
Address：26 MakariosⅢAvenue，Polis，Paphos．
Opening hours：
Tuesday，Wednesday & Friday （8a．m．-3p．m．），Thursday （8a．m．-5p．m．），Saturday （9a．m．-3p．m．）．Monday and Sunday closed．
Entrance Fce：￡1.75；half price on national holidays．
Maa-Palaeokastro Museum
The small museum is located within the Maa-Palaeokastro site．Built in 1989，the museum's unusual design is the work of architect Andrea Bruno．The museum houses a small collection of objects，mainly copies，as well as some educational information on the site．
Open daily：8：30a．m．-5p．m．（November-March），8：30a．m．-6p．m．（April-October）．All year round．
Entrance Fee：￡1.75

25．Which museum takes disabled visitors into consideration？D
A．Maa-Palaeokastro Museum．
B．The Stem Museum of Village Life．
C．Marion-Arsinoe Archaeological Museum．
D．The Leventis Municipal Museum．
26．What is on display in the Stem Museum of Village Life？B
A．Famous paintings．
B．Things used in daily life．
C．The education of the villagers．
D．The story of the village leader．
27．Which museum can you visit at 9：00a．m．on Monday？C
A．The Leventis Municipal Museum．
B．The Stem Museum of Village Life．
C．Maa-Palaeokastro Museum．
D．Marion-Arsinoe Archaeological Museum．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

17．In January 2015，I left my hometown and family in Virginia and moved to Iowa so I could be coached by Jackson．I'd been dreaming of an Olympic gold medal since I was eight-but gradually，that dream seemed like a million miles away．
On February 2，2016，while Mom was visiting me in Iowa，I told her，"I don't like swimming any more．I want to try dancing，or become a singer．I can get a job in Virginia．I just want to come home．"
Mom's eyes narrowed and her expression turned to stone．"You're breaking my heart!Brie，"she said．"You've been doing swimming for ten years，and now you want to quit？Have you lost your mind？"
I hadn't lost my mind，but I had lost my fire．It's an entirely different thing to push toward that dream when you feel alone．
"I'm not trying to break your heart，Mom，"I said．"I just don't want to do it any more．"
"I know you miss home．But you've signed a contract that says you will represent your country to the best of your ability．You've got a responsibility to your teammates．And now you just want to walk away？I will not let you be dishonorable．If you don't like swimming，then at the very least，you'll finish the season．"
The next afternoon as I dragged myself into Jackson's swimming center，I thought of the efforts Mom had made in order to pay for my training．I thought of my two sisters：Arielle，who gave up ballroom dancing，and Joyelle，who stopped ice skating so that our single mom could afford to keep me in swimming．
For now，here's what you need to know：Exactly 210 days before I ever attempted my first event（赛事）in the Rio Summer Olympics，my leap of faith came this close to ending in a crash of disaster．

25．How did the author's mother feel toward her intention to quit swimming？A
A．Heart-broken
B．Dishonorable
C．Helpless
D．Calm
26．We can infer from the passage that the authorA．
A．changed her mind in the end
B．realized her Olympic dream
C．loved singing and dancing more
D．was so overcome with homesickness that she gave up her dream
27．What would be the best title for the passage？C
A．My Dream B．My Mother C．My Leap of Faith D．Responsibility
28．Who will be interested in the passage？B
A．Those who are graduating from university．
B．Those who want to give up dreams．
C．Those who are looking for customers．
D．Those who dislike swimming．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

14．Scientists investigated why Ebola virus is so deadly when it spreads from animals to humans and then from human-to-human contact．The research team looked at the Zaire Ebola virus in an animal system to understand how it gains strength．This virus is responsible for the current outbreak in West Africa．They found that initially the animal systems were not affected by the virus，but succeeding transmission（传送） into other animals caused the virus to"hot up"and become more severe．
The team analyzed the viruses at different stages and were able to identify several changes in its genetic material that were associated with increased disease．
Professor Julian Hiscox，who led the study from the University's Institute of Infection and Global Health，explains："The work tells us that the evolutionary goal of Ebola virus is to become more fatal．"
"We were able to show through genetic analysis which parts of the virus are involved in this process．The information we have gathered will now allow us to monitor for such changes in an outbreak as well as develop future treatment strategies．"
Professor Roger Hewson，leading the study from Public Health England，Porton Down，said："Ebola virus is such a destructive infection to the people affected by the disease and the economy of West Africa．"
"Our understanding of Ebola virus biology is way behind that of other viruses and our cooperation shows how we can bring together our specialists'skills to close this knowledge gap．"
Professor Miles Carroll，a co-author of the work，said："This study has allowed the team to be at the forefront of developing methodologies to analyze patient samples recently taken by the European Mobile Laboratory from West Africa to understand disease evolution during the current outbreak．"

29．What does the first paragraph mainly tell us？C
A．How severe Ebola virus is．
B．How Ebola virus spreads．
C．How Ebola virus gradually becomes deadly．
D．What contributions scientists have made on Ebola virus．
30．Which of the following statements is mentioned in the passage？B
A．In the first stage，the virus hurts its victims much．
B．As the virus spreads，it'll change and become more and more deadly．
C．The research in Ebola virus is more advanced than that in other viruses．
D．The scientists have a negative attitude to the research in Ebola virus．
31．The underlined word"fatal"has the closest meaning toB．
A．optimistic
B．deadly
C．common
D．Fantastic
32．Where can we probably read this passage？A
A．In a science report．
B．In a storybook．
C．In an advertisement．
D．In a textbook．

查看答案和解析>>

科目：高中英语 来源： 题型：完形填空

1．Recently I was invited to a friend's house for supper-and had a meal I have never had before．
All the friends invited were a little （36）C．It's not that Ben is unsociable，or a bad cook，but it's just that he never （37）B more than he has to．So how come he was inviting us round for a meal？Had he bought something （38）Bfor his friends？He greeted us at the door and showed us into his dinning room where a （39）Dtable was waiting for us．"Nothing but the （40）Cfor my friends!"said Ben．We all sat down and looked （41）A at each other-what did he （42）Cto？
Ben returned with four bowls of hot soup．"It's a （43）Aof carrots，potatoes and tomatoes，"said Ben．The next （44）Awas also a little strange in that we didn't quite know what it was again．It's just （45）Dmixture of vegetables．
As we ate we chatted and finally the （46）D turned back to what we were eating．"Was there a recipe（食谱）for this，"asked Marina，"or did you （47）Cit up？"Ben put his fork down．"What I cooked （48）Bwhat I could find．"Marina was surprised．"But you can find anything in supermarkets these days．""But there's （49）Achoice in what you can find （50）Dsupermarkets，"he replied．（51）Bthat we had all finished the food，Ben decided to tell the truth．He had read recently that supermarkets usually （52）Caway 5percent of their food every day．So Ben decided to look inside his local supermarket bins．There he found food that was slightly out of（53）D，boxes of throw-away vegetables and fruit．
So Ben had （54）Aprovided a decent （不错的） meal for his friends，and made us aware of the fact that there are many poor people who need the food，but the amount of food thrown away is enough to （55）Bmillions of people．

36．A．excited	B．disappointed	C．surprised	D．delighted
37．A．takes	B．spends	C．uses	D．costs
38．A．cheap	B．special	C．practical	D．usual
39．A．new	B．separate	C．booked	D．laid
40．A．worst	B．most	C．best	D．least
41．A．nervously	B．carefully	C．sadly	D．happily
42．A．think	B．consider	C．mean	D．ask
43．A．mixture	B．liquid	C．matter	D．dish
44．A．course	B．food	C．soup	D．salad
45．A．other	B．others	C．the other	D．another
46．A．dinner	B．idea	C．food	D．subject
47．A．pick	B．look	C．make	D．take
48．A．referred	B．depended on	C．lay in	D．resulted from
49．A．less	B．more	C．some	D．any
50．A．within	B．beyond	C．inside	D．outside
51．A．Feeling	B．Seeing	C．Realizing	D．Thinking
52．A．store	B．move	C．throw	D．hide
53．A．order	B．place	C．season	D．date
54．A．successfully	B．possibly	C．hardly	D．hopefully
55．A．enrich	B．feed	C．affect	D．please

查看答案和解析>>

科目：高中英语 来源： 题型：填空题

11．10human H7N9flu cases（61）have been reported（report） in Beijing in 2017so far，according to the Beijing Center for Disease Prevention and Control （62）onTuesday．
（63）Thelatest two cases were reported on April 5．The two patients had contact with live poultry（活禽）．One of （64）themdied of the infection on April 8after treatment failed．The other （65）is（be） still being treated in a hospital and in stable condition．
Beijing has launched （66）environmental（environment） test in six districts involved in agriculture．H7N9is a bird flu strain first reported to have infected humans in China in March 2013．Infections are most likely （67）to occut（occur） in winter and spring．Disease control and prevention （68）experts（expert） have said that the H7N9 virus was not transmitted from person to person．
Experts suggest that everyone（69）（should） avoid（avoid） contact with dead and live poultry，（70）andonly buy poultry with a safety test certificate．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

18．Like all big cities，Paris has a traffic problem：lots of cars，lots of traffic jams and lots of pollution from exhaust fumes （废气）．So the city began a project to improve the situation．
Under the Velib project （‘Velib'comes from vélo liberté，or‘bicycle freedom'） people can take a bicycle，use it for as long as they want，and then leave it at the same or another bicycle station．The first half-hour on the bike is free，but if you don't return it after 30 minutes，you have to pay．But it's only?1a day or?29 a year!The bicycles are heavy （25kg），and they are all grey and have baskets．There are about 20，000 of them in the city，and around 1，450 bicycle stations．So there are a lot more Velib stations than the 298 subway stations!
Paris is not the first city to have a project like this．But not everybody thinks it's a great idea．One Parisian said，"These bicycles are only for short journeys．If people want to travel across the city，they won't use a bicycle-they'll still use their cars．"
A city spokesman said，"The bicycle project won't solve all our traffic problems，of course．But it might help reduce air pollution．Traffic，together with factory fumes，is a big problem．There aren't any simple answers to traffic problems and pollution in cities．But unless we do something now，there will be more traffic jams and temperatures will continue to rise，so the problems in our environment will get worse．The bikes might help people to lead a healthier life，too．"

25．What can we learn about the Velib project？D
A．Its bikes have no baskets．
B．Its bikes are light and colorful．
C．It aims to make traveling easier．
D．It owns more stations than the subway．
26．If you use a Velib for 1hour，you should payB．
A．Free．
B．?1．
C．?29．
D．?30．
27．Why do some people disagree with the Velib project？C
A．The cost is rather high．
B．It's hard to find a Velib station．
C．It's not suitable for a long journey．
D．The distance between two Velib stations is long．
28．What's the city spokesman's attitude towards the bicycle project？B
A．Worried．
B．Positive．
C．Uncaring．
D．Doubtful．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

11．Look back through history at all the famous and distinguished persons．Albert Einstein，Isaac Newton，etc．，all had one thing in common：they were all extremely curious about the world around them．This natural quality of theirs was what improved them from average personalities to true geniuses．
Curiosity will have you asking questions always．You will go hunting for the answers and won't rest until you find them．The end result is that，you will learn a lot，and keep on adding to your knowledge throughout your life．No wonder then that，naturally curious people are often the most knowledgeable ones around．
Driven by curiosity，when you head out to seek answers，it will be like going on an adventure．Depending on what you seek，you might have to look in new places and learn new things．You are likely to face encumbrances and roadblocks on the way，but you will keep overcoming them，continuing onwards till you reach your final goal of complete understanding．This journey from ignorance to knowledge and all the things that happen in between will bring you new experiences．
Curiosity will naturally make you learn，understand and experience more．As such，it will make you better exposed to a whole new world of possibilities．
For instance，you might be an engineer by qualification，but if you are curious，you might want to find out how articles on the Internet are written．It might even happen that，while exploring the process of writing，you may find out that you actually enjoy doing it，and that people like reading your work．Thus your curiosity would have ended up opening a whole new field of work for you．

32．The author mentions Albert Einstein and Isaac Newton because both of themB．
A．are intelligent                           B．are very curious persons
C．are great scientists                        D．have different personalities
33．What message does the second paragraph mainly convey？C
A．Curious people are always the most knowledgeable．
B．We should hunt for answers instead of waiting for them．
C．Curiosity is good for learning．
D．Naturally asking questions makes you curious constantly．
34．The underlined word"encumbrances"can be replaced by"A"
A．difficulties．B．methods．C．aims        D．opportunities．
35．The best title for the text could beD．
A．Curiosity Not for Everyone
B．You Will Explore newer Possibilities
C．Your Future Is Controlled by Curiosity
D．Reasons Why Curiosity Can Make You Smarter．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

12．Have you ever wished to have an umbrella that makes your hands free？Alan Kaufman has come up with the"Nubrella"，which means"new"+"umbrella"．It is the first truly hands-free umbrella in the world．The inventor says that it stops rain，wind and snow and can keep your head，face and hair dry．
"I never planned to invent a product．I just noticed a problem and came up with a solution，"said the inventor．The idea for the invention began on one rainy day，when Mr．Kaufman was standing in one of his stores．He began to look at people's umbrellas．He found that they had to try very hard to keep their umbrellas in the right place．At that moment an idea came into his mind．He ran to his desk and drew a picture．In this way，the Nubrella was born．
One cool feature of the Nubrella is that you don't hold it like a normal umbrella； you wear it．The shoulder straps （肩带） of the Nubrella allow people to be fully hands-free，so when walking in the rain with the Nubrella，you are able to use your cell phone or drink a hot cup of coffee．Also，the Nubrella will never be inverted （颠倒） in the wind．The new umbrella is far safer than traditional ones，because it has no sharp points．
29．How can you use the"Nubrella"？A
A．You can wear the shoulder straps of the Nubrella．
B．You can put the Nubrella on your head．
C．You can use your hands to control it．
D．You can put it on your bike．
30．Which of the following is NOT right？D
A．"Nubrella"means"new"+"umbrella"．
B．The idea of the new umbrella came from the rainy day．
C．When you are walking in the rain，you'd better take the Nubrella．
D．If you go out with the Nubrella in the rain，you'd better drink a hot cup of coffee．
31．It can be learned from the passage thatD．
A．Alan Kaufman often uses umbrellas in everyday life
B．the new kind of umbrella was invented by an umbrella store owner
C．the inventor thought for a long time before inventing the Nubrella
D．you can do other things with your hands when using the Nubrella
32．The writer writes the passage toC．
A．introduce this new kind of umbrella to people who are selling umbrellas
B．tell the readers about a great inventor named Alan Kaufman
C．tell the readers about a new invention that is very useful
D．tell the readers that the inventor didn't want to invent anything．

查看答案和解析>>

同步练习册答案

练习册

高中

初中

小学