(英语)中考英语连词练习题及答案及解析
英语中考英语连词练习题及答案
【英语】中考英语连词练习题及答案一、初中英语连词1．Bill, stop smoking,you'll get better soon.A. butB. afterC. orD. and 【答案】D【解析】【解析】句意：比，不要抽烟，那么你很快好起来。
A.但是；也许，否； D.和。
句是祈使句，且句子前后是并列承关系，所以用D。
【点】考辨析。
注意句子涉及到祈使句，and/or+ 述句的用法。
B.在⋯⋯今后； C. and，故答案2．—In shopping centers of most foreign countries, we can see many products made in China.—What we need is ________ "Made in China", ________ "Created in China". There is still a long way to go.A. both ⋯ and【答案】BB. not only⋯ but alsoC. neither⋯ norD. either⋯ or3．Mark felt very bad today. __________, he kept working all day and said nothing about it.A. HoweverB. ThereforeC. OtherwiseD. Besides 【答案】A4．—The air pollution is terrible.—It will be worse ______ we take action to protect the environment.A. ifB. unlessC. untilD. when【答案】B5．—Could you tell me more about the movie Frozen II __________ you have watched it.—No problem. But you'd better watch it in person __________ I can't express its beauty.A. since; soB. unless; asC. since; as【答案】C6．How can we improve our environment a lot A. while B. until each of us does something useful for it?C. afterD. unless【答案】D7Learning to love is like learning to walk.—Yes, ______ we step out bravely, we'll find it's not so difficult.A. as a resultB. even thoughC. as long asD. as far as 【答案】C8．Jim has been in the factory for two months ________ he left school.A. whenB. sinceC. as soon asD. whether 【答案】B9．Yesterday morning A. when I was just leaving the telephone rang.B. whileC. becauseD. since【答案】A10． My mother doesn't like stories _____have sad endings.A. thatB. whoC. whereD. those 【答案】A【解析】【解析】句意：我不喜有悲的局的故事。
【英语】中考英语连词真题汇编(含答案)及解析
【英语】中考英语连词真题汇编(含答案)及解析一、初中英语连词1．Bill, stop smoking, you'll get better soon.A. butB. afterC. orD. and【答案】 D【解析】【分析】句意：比尔，不要抽烟，那么你很快好起来。
A.但是；B.在……之后；C.或者，否则；D.和。
该句是祈使句，且句子前后是并列顺承关系，因此用and，故答案选D。
【点评】考查连词辨析。
注意句子涉及到祈使句，and/or+陈述句的用法。
2．You like football ___________ she likes reading.A. WhenB. orC. becauseD. while【答案】 D3．—Why do many kids spend more time playing computer games?—Because their parents are _____ busy _____ they have little time to stay with their children. A. too, to B. so, that C. such, that D. enough, to【答案】 B4．It won't be a long time ________ your son comes back. Don't be worried.A. sinceB. asC. beforeD. unless【答案】 C5．—Tom, what does "Stay hungry, stay foolish." mean?—You can have your own understanding. But I think it means follow your original aspiration （初心） you will succeed.A. soB. butC. andD. or【答案】 C6．____it rained a lot, we enjoyed our holiday.A. AlthoughB. BecauseC. UnlessD. However【答案】 A7．Some people won't realize the importance of their health ____ they lose it.A. becauseB. afterC. whenD. until【答案】 D8．You will find it useful to learn to study by yourself _____ you go to college.A. whileB. untilC. SinceD. when【答案】 D9．My father was preparing for his speech ______________ my mother was doing some washing last night.A. ifB. unlessC. whileD. until【答案】 C10．Tom's father was cleaning the car _______________ his mother was doing housework.A. althoughB. asC. sinceD. while【答案】 D11．Jim has been in the factory for two months ________ he left school.A. whenB. sinceC. as soon asD. whether【答案】 B12．You can take___________ the train___________ the bus there. It will take the same amount of time.A. eithers orB. both andC. neither; norD. not only: but also【答案】 A13．Yesterday morning I was just leaving the telephone rang.A. whenB. whileC. becauseD. since【答案】 A14．Tom won't play computer games __________ he finishes his homework.A. ifB. so thatC. unlessD. although【答案】 C15．— Would you like to go camping this weekend?— I'd love to, ______________ I can't. I have to prepare for the English Speech Contest.A. andB. orC. butD. so【答案】 C【解析】【分析】句意：——这个周末你想去野营吗？——我很想去，但不行。
2020-2021年 中考英语连词20(附带答案解析)
2020-2021年中考英语连词20(附带答案解析)一、初中英语连词1．—The air pollution is terrible.—It will be worse ______ we take action to protect the environment.A. ifB. unlessC. untilD. when【答案】 B2．Tom won't play computer games __________ he finishes his homework.A. ifB. so thatC. unlessD. although【答案】 C3．Your spoken English will get better and better ______________ you practise speaking more.A. beforeB. ifC. thoughD. until【答案】 B【解析】【分析】句意：如果你多练习说英语，你的英语口语会越来越好。
A：before 在……前； B： if 如果；C： though 虽然；D： until直到……才（止）。
根据前后句意思，可知后句是前句发生的条件，故选B。
【点评】考查连词辨析。
根据前后句的关系，选择正确的连词。
4．After the new high-speed railway line began operations, the time on the trip from Lianyungang to Qingdao now is much less than __________in the past.A. oneB. thisC. thatD. it【答案】 C【解析】【分析】句意：新高速铁路开通后，连云港到青岛的时间比过去少了很多。
A：one，一，同类中的一个；B：this（指时间、距离较近或下文要提到的人或事物）这个；C：that，（指时间、距离较远或指上文提到过人或事物）那，那个；D：it它指与上文的同一个。
(英语)中考英语连词练习题及答案及解析
（英语）中考英语连词练习题及答案及解析一、初中英语连词1．— Do you know ____________Grandma is going to visit us？—Next Saturday. She told me on the phone.A. whereB. whyC. whenD. whether【答案】 C【解析】【分析】句意：——你知道奶奶什么时候来看望我们吗？——下周六。
她在电话告诉我们的。
where 哪里；why 为什么；when 何时；whether是否. 根据答语next Saturday，可知问的是时间，用when提问，故选C。
【点评】本题考查疑问词辨析。
根据答语确定所使用的疑问词。
2．Some people won't realize the importance of their health ____ they lose it.A. becauseB. afterC. whenD. until【答案】 D3．How can we improve our environment a lot each of us does something useful for it?A. whileB. untilC. afterD. unless【答案】 D4．—Learning to love is like learning to walk.—Yes, ______ we step out bravely, we'll find it's not so difficult.A. as a resultB. even thoughC. as long asD. as far as【答案】 C5．I got up at six this morning _____________ I could catch the early bus to Nanjing.A. soB. thatC. in order toD. so that【答案】 D6．He is getting fat, _______________ he has decided to go to work on foot.A. becauseB. thoughC. soD. and【答案】 C7．I don't like western food. I seldom eat it ______________ to McDonald's with my daughter.A. ifB. whenC. asD. unless【答案】 D8．__________ the teacher came in, the students stopped reading at once.A. WhenB. WhileC. BeforeD. /【答案】 A9．Jim has been in the factory for two months ________ he left school.A. whenB. sinceC. as soon asD. whether【答案】 B10．After the new high-speed railway line began operations, the time on the trip from Lianyungang to Qingdao now is much less than __________in the past.A. oneB. thisC. thatD. it【答案】 C【解析】【分析】句意：新高速铁路开通后，连云港到青岛的时间比过去少了很多。
中考英语连词练习题(含答案)
中考英语专题复习——连词（真题）一、单选题（共50题；共100分）1. ( 2分) It's hard for us to say goodbye ______ we have so many happy days to remember.A. soB. becauseC. althoughD. until2. ( 2分) Never put off ________ tomorrow what you can do today.A. untilB. beforeC. whenD. as3. ( 2分) She stopped talking her mother came into the room.A. as soon asB. unlessC. though4. ( 2分) —Will you go to the picnic this Saturday?—I'd like to, ______ I'll have to help look after my baby sister.A. butB. orC. andD. so5. ( 2分) I know his face ______ I can't remember his name.A. andB. butC. orD. so6. ( 2分) Little Jack has learned to do lots of things on his own, ______ he is only four years old.A. ifB. thoughC. forD. since7. ( 2分) Betty kept silent at first _______ soon she joined the other girls, chatting and laughing.A. soB. butC. orD. because8. ( 2分) —Why don't you get used to the life in Beijing?—_______ the crowded traffic _________ the high living cost. The only reason is the badly polluted air.A. Not only; but alsoB. Either; orC. Both; andD. Neither; nor9. ( 2分) Be patient! Give him more time, ______he will find the answer to the question on his own.A. butB. orC. andD. so10. ( 2分) — Learning to love is like learning to walk.—Yes, ______we step out bravely, we'll find it's not so difficult.A. as ifB. even thoughC. as long asD. as far as11. ( 2分) his right hand was hurt, he wrote slowly.A. Because; soB. Because; /C. Although; butD. Although; /12. ( 2分) —I really want to pass the exam for further study.—Believe in yourself, dear! Your dream will came true you put your heart into it.A. even ifB. as long asC. as soon as13. ( 2分) — What a mess! The sharing bikes are thrown everywhere.— Let's collect and put them in the right place they can be used conveniently.A. unlessB. so thatC. becauseD. so long as14. ( 2分) —It is said that children in South Korea have to hike and walk through mountains atnight their military(军事的) training.—Really? So their training is much harder than ours.A. afterB. sinceC. duringD. before15. ( 2分) We must find out the professor is coming, so we can book a room for him.A. howB. whyC. whenD. where16. ( 2分) He stayed up very late that night. __________ he woke up in the morning, the sun was already high up in the sky.A. UntilB. AfterC. WhileD. As17. ( 2分) You do not win respect by showing __________ you are, but what you're able to do.A. whereB. whoC. howD. when18. ( 2分) Square Dancing is good exercise for the old, sometimes it makes a lot of noise.A. IfB. AlthoughC. UntilD. Because19. ( 2分) Some people won't realize the importance of their health they lose it.A. becauseB. afterC. whenD. until20. ( 2分) —Excuse me. Is it my turn now?—Not yet. Please wait outside ________ your name is called.A. untilB. sinceC. so21. ( 2分) —There is always a smile on your face. Isn't there any trouble in your life?—Yes, there is. But life is like a mirror. you smile at it, it will smile back.A. WhenB. BeforeC. UntilD. After22. ( 2分) I like the city _____the people are really kind and friendly.A. thatB. whichC. whereD. who23. ( 2分) I always get up early on weekdays, ______I'm afraid I will be late for school.A. becauseB. soC. thoughD. than24. ( 2分) —I think the environment is terrible these years.—Yes, it will be even worse the government takes action it.A. until; protectB. unless; to protectC. if; protecting25. ( 2分) In summer, food will go bad quickly ________ we put it into a fridge.A. ifB. unlessC. as soon asD. while26. ( 2分) Tony was drawing a picture_______ I was doing my homework.A. ifB. becauseC. whileD. until27. ( 2分) It is raining heavily, none of the students are late for school.A. althoughB. butC. soD. because28. ( 2分) —What do you think of your junior high school life?—I think it is enjoyable, I sometimes have some trouble in study.A. ifB. thoughC. whileD. until29. ( 2分) Anna her brother like listening to soft music.A. Both; andB. Neither; norC. Either; orD. Not only; but also30. ( 2分) — Can students go online during lessons?—They can ________ it is for that lesson.A. ifB. orC. soD. but31. ( 2分) —It has been much easier for me to go to work________ shared bikes appeared.—But they also caused plenty of problems.A. sinceB. beforeC. unlessD. though32. ( 2分) — Which show do you prefer, Running Man or The Reader?— The reader, of course. ________ I _______ my brother likes it.A. Both; andB. Neither; norC. Either; orD. Not only; but also33. ( 2分) Mr Black walked around and offered help ____ we were doing an experiment.A. whileB. althoughC. untilD. unless34. ( 2分) Peter spent half a day fishing by the river, ______ he didn't catch anything.A. soB. orC. forD. but35. ( 2分) Most British people drink tea every day _______ they prefer black tea. They usually add milk or sugar to their tea.A. soB. orC. butD. and36. ( 2分) When you are in your school dining hall during lunchtime, you may feel lonely _______ you can find someone to have lunch with.A. ifB. unlessC. afterD. because37. ( 2分) Mexican and Tex-Mex foods were popular in the USA, _______ now Chinese food has more fans.A. becauseB. butC. soD. unless38. ( 2分) The words "Araceli", "kaya k" and “level" are the same they are read left tonight or right to left.A. sinceB. thoughC. unlessD. whether39. ( 2分) Work hard, ____________you'll catch up with your classmates next time.A. andB. orC. but40. ( 2分) —Do you still remember our primary school teacher Mrs. Liu?—Yes. She always encouraged us and gave us support we met difficulties.A. wheneverB. whateverC. however41. ( 2分) Many people like pandas they are cute.A. thoughB. ifC. whileD. because42. ( 2分) The manager of the hotel was waiting at the gate _______ the guests arrived.A. whileB. whenC. unlessD. after43. ( 2分) My grandfather does Chinese Kung Fu every day _________ he is over eighty.A. sinceB. thoughC. until44. ( 2分) When you're tired, you can get close to the nature you'll feel relaxed in the beauty all around.A. orB. andC. but45. ( 2分) Lots of scientists are working hard _____ send astronauts to Mars.A. soB. butC. in order toD. so that46. ( 2分) —I won't go travelling again during the spring festival. You can't imagine how expensive the hotel is!—____________. The transport is a big problem, too.A. So will IB. Nor do IC. Neither will ID. So I will47. ( 2分) Work really hard, you can realize your dream of becoming a pilot.A. butB. soC. orD. and48. ( 2分) We will have to cancel the baseball match the weather improves.A. unlessB. becauseC. as soon asD. if49. ( 2分) Daily homework is necessary, _________too much of it may bring harm to students.A. soB. forC. butD. or50. ( 2分) The Italian woman didn't feel a culture shock________it was her first time to Shanghai.A. thoughB. sinceC. ifD. when答案解析部分一、单选题1.【答案】B【考点】表因果关系的连词，连词辨析【解析】【分析】句意：说再见不容易，因为我们有那么多的值得记住的快乐日子。
【英语】 中考英语连词专项训练100(附答案)含解析
【英语】中考英语连词专项训练100(附答案)含解析一、初中英语连词1．Could you tell me __________the singer will come to our school or not?A. ifB. whetherC. thatD. what【答案】 B【解析】【分析】句意：你能告诉我歌手是否会来我们学校吗？whether...or not，固定搭配，是否，故选B。
【点评】考查固定搭配，注意whether...or not的用法。
2．—My parents are crazy about Running Man. How about your parents?—_________ my dad _________ my mum likes it. Instead, they prefer The Voice of China.A. Neither; norB. Both; andC. Not only; but also【答案】 A3．You will find it useful to learn to study by yourself _____ you go to college.A. whileB. untilC. SinceD. when【答案】 D4．Mark felt very bad today. __________, he kept working all day and said nothing about it.A. HoweverB. ThereforeC. OtherwiseD. Besides【答案】 A5．How can we improve our environment a lot each of us does something useful for it?A. whileB. untilC. afterD. unless【答案】 D6．I got up at six this morning _____________ I could catch the early bus to Nanjing.A. soB. thatC. in order toD. so that【答案】 D7．The film is really exciting. ______the students ______ their teacher is enjoying the film.A. Both; andB. Not only; but alsoC. Either; orD. Neither; nor【答案】 B8．Study hard, _______ our parents will be disappointed.A. andB. butC. orD. because【答案】 C9．__________ the teacher came in, the students stopped reading at once.A. WhenB. WhileC. BeforeD. /【答案】 A10．Emily, you are playing video games again! Study hard, ______ you will fail in the coming exam.A. thenB. soC. andD. or【答案】 D【解析】【分析】句意：Emily，你又玩游戏！努力学习，否则你将在接下来的考试中失败。
(英语)中考英语连词试题(有答案和解析)
（英语）中考英语连词试题(有答案和解析)一、初中英语连词1．I've wanted to read Peter Pan for long, _________ today I finally borrowed the book from the library.A. orB. butC. andD. since【答案】 C【解析】【分析】句意：我一直想读《彼得潘》，今天我终于从图书馆借到了这本书。
A或者、否则；B但是，C和；D自从，句子前后是并列关系，则应用连词and，故选C。
【点评】此题考查联系辨析。
根据两句之间的关系确定所使用的连词。
2．It won't be a long time ________ your son comes back. Don't be worried.A. sinceB. asC. beforeD. unless【答案】 C3．I think you should be against the situation, ________, of course, you are happy with it. A. because B. however C. anyway D. unless【答案】 D4．——What do you think of our school basketball team?——They're going to lose the match __________ they improve their skills.A. unlessB. untilC. ifD. as【答案】 A5．Some people won't realize the importance of their health ____ they lose it.A. becauseB. afterC. whenD. until【答案】 D6．You will find it useful to learn to study by yourself _____ you go to college.A. whileB. untilC. SinceD. when【答案】 D7．Although she is under great stress, ______ she always wears a smile on her face.A. andB. orC. butD. /【答案】 D8．_____________ my brother arrived in Thailand, he visited the local biggest temple at once.A. As soon asB. WhileC. UntilD. Before【答案】 A9．He is getting fat, _______________ he has decided to go to work on foot.A. becauseB. thoughC. soD. and【答案】 C10．She got up very early that day __________ she could catch the first train.A. becauseB. ifC. thoughD. so that【答案】 D11．Yesterday morning I was just leaving the telephone rang.A. whenB. whileC. becauseD. since【答案】 A12．Emily, you are playing video games again! Study hard, ______ you will fail in the coming exam.A. thenB. soC. andD. or【答案】 D【解析】【分析】句意：Emily，你又玩游戏！努力学习，否则你将在接下来的考试中失败。
2024英语中考各省市语法真题之连词和状语从句及解析
2024中考英语真题分类汇编题型之连词及状语从句(解析版)1.（2024四川宜宾）4. She stopped talking her mother came into the room.A. as soon asB. unlessC. though【答案】A【解析】句意：她妈妈一进到房间里，她就停止了说话。
A. as soon as 一----就---； B. unless 除非； C. though尽管；这里是考察连词，依据She stopped talking 和her mother came into the room.之间的关系，可知是妈妈一进到房间里，她就停止了说话；故选A2.(2024湖北宜昌)3. ---It has been much easier for me to go to work________ shared bikes appeared.----But they also caused plenty of problems.A. sinceB. beforeC. unlessD. though【答案】A【解析】句意：——自从共用自行车出现以来，我就更简单去上班了。
——但它们也造成了很多问题。
考查连词辨析题。
A. since自从……，后接时间名词或从句，表一段时间，用于现在完成时；B. before在……以前，表时间；C. unless除非，表条件；D. though尽管，表让步。
本句是时间状语从句，可解除CD两项。
依据句意结构和语境，可知before不合句意，故选A。
3.(2024 湖北黄冈)5. -- Which show do you prefer, Running Man or The Reader?-- The reader, of course. ________ I _______ my brother likes it.A. Both; andB. Neither; norC. Either; orD. Not only; but also【答案】D【解析】句意：——《跑男》和《朗读者》，你更喜爱哪一个节目？——当然是《朗读者》，不仅我，而且我哥哥都喜爱它。
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（英语）中考英语连词练习题及答案及解析一、初中英语连词1．Tony has learned a lot about Chinese culture ______________ he came to China.A. beforeB. sinceC. untilD. when【答案】 B【解析】【分析】句意：自从来到中国托尼学到很多关于中国文化的东西。
before在……之前；和过去完成时连用；since自从，后跟表示过去的时间状语和现在完成时连用；until直到……才……；不和完成时连用，when当……时候；和过去完成时连用。
故选B。
【点评】连词辨析。
掌握每个连词的使用规则。
2．____it rained a lot, we enjoyed our holiday.A. AlthoughB. BecauseC. UnlessD. However【答案】 A3．My father was preparing for his speech ______________ my mother was doing some washing last night.A. ifB. unlessC. whileD. until【答案】 C4．Peter bought some goldfish ______________ he found it difficult to raise them.A. becauseB. orC. thoughD. until【答案】 C5．Study hard, _______ our parents will be disappointed.A. andB. butC. orD. because【答案】 C6．You can take___________ the train___________ the bus there. It will take the same amount of time.A. eithers orB. both andC. neither; norD. not only: but also【答案】 A7．My mother doesn't like stories _____have sad endings.A. thatB. whoC. whereD. those【答案】 A【解析】【分析】句意：我妈妈不喜欢有悲伤的结局的故事。
that 引导定语从句，指物；who指人；where指地点，在从句中作地点状语，those那些，不引导定语从句，这是含有定语从句的主从复合句，先行词是stories，指物，在从句中作主语，关系代词用that/which，故选A。
【点评】此题考查定语从句。
注意定语从句的关系词的使用。
8．Love your parents __________ they are alive. Don't wait until it is too late.A. whileB. thoughC. becauseD. unless【答案】 A【解析】【分析】句意：当你父母活着时爱他们。
不要等到太迟才行动。
while当……时候；though虽然；because因为；unless除非，故选A。
根据句意只有A选项是正确的，其它选项翻译不通，故选A。
【点评】此题考查连词辨析。
弄清每个连词意思，根据语境和句意确定所使用的连词。
9．Emily, you are playing video games again! Study hard, ______ you will fail in the coming exam.A. thenB. soC. andD. or【答案】 D【解析】【分析】句意：Emily，你又玩游戏！努力学习，否则你将在接下来的考试中失败。
A.然后；B.所以；C.和；D.否则。
祈使句+and/or+句子，固定搭配，根据句意可知是努力学习，否则会失败，故选D。
【点评】考查连词辨析，注意平时识记固定搭配，理解句意。
10．A recent survey shows that 44 percent of Americans want to use self-driving cars,_________ 34 percent believe that they will make the roads mote dangerous.A. althoughB. becauseC. if【答案】 A【解析】【分析】句意：一个近来的调查显示44%的美国人想要使用无人驾驶车，尽管34%的人相信它们会让道路更加危险。
A. 尽管；B. 因为；C. 如果，根据两句的关系可知是让步状语从句，although：尽管，故选A。
【点评】考查连词辨析，根据语境确定两句的关系，选出合适的连词。
11．The film seems interesting ______ we all want to see it.A. andB. butC. unlessD. if【答案】 A【解析】【分析】句意：这部电影似乎很有趣，我们都想看。
A：and又，和，表示顺接； B： but但是，表示转折； C： unless除非。
表示条件； D： if如果，表示假设。
根据interesting 和want to see，可知前后两句是顺接关系，要用and。
【点评】考查连词辨析。
根据前后句的关系，选择正确的连词。
12．_________ we didn't win the basketball game, we were satisfied with our hard work.A. IfB. ThoughC. SinceD. Because【答案】 B【解析】【分析】句意：虽然我们没有赢得篮球赛，但我们对我们的努力感到满意。
A：If如果，表示假设条件；B：Though 虽然，表示转折；C：Since既然；明显的原因；D：Because因为，表示原因。
根据前后句意思，可知前后句是转折关系，要用though，故选B。
【点评】考查连词辨析。
理解连词的意思和用法，根据前后句的关系，选择正确的连词。
13．You'd better travel around Nanjing with a local tour guide ______________ you want to know more about its culture.A. unlessB. untilC. althoughD. if【答案】 D【解析】【分析】句意：如果你想了解南京的文化，最好带着当地的导游游览一下。
A：unless除非；B： until 直到……才（为止）；C： although 尽管；D： if如果。
导游带领游览是了解南京的条件，因此要用从属连词if，故选D。
【点评】考查连词辨析。
理解连词的词义和用法，根据前后句的关系，选择正确的连词。
14．It won't be a long time ________ your son comes back. Don't be worried.A. sinceB. asC. beforeD. unless【答案】 C15．Your spoken English will get better and better ______________ you practise speaking more.A. beforeB. ifC. thoughD. until【答案】 B【解析】【分析】句意：如果你多练习说英语，你的英语口语会越来越好。
A：before 在……前； B： if 如果；C： though 虽然；D： until直到……才（止）。
根据前后句意思，可知后句是前句发生的条件，故选B。
【点评】考查连词辨析。
根据前后句的关系，选择正确的连词。
16．My best friend and I haven't seen each other ___________ she went to the USA 10 years ago.A. whenB. ifC. althoughD. since【答案】 D【解析】【分析】句意：自从我的朋友十年前去了美国，我和我的朋友们就没有见过面。
A.当……时候；B.如果；C.尽管；D.自从。
本句为时间状语从句，主句为现在完成时，从句为一般过去时，因此使用since。
故答案是D。
【点评】考查连词辨析，注意since连接的时间状语从句，主句为现在完成时，从句为一般过去时。
17．The environment will be much worse ______everyone has a sense of protecting it. A. unless B. if C. so that【答案】 A【解析】【分析】句意：除非每个人有保护环境的意识，否则环境将会更糟糕。
A除非……否则；B如果；C为了。
除非有环保意识，否则环境将变得更糟，本句是unless引导的条件状语从句，故答案选A。
【点评】考查连词辨析，首先识记连词词义，然后根据词义和句意确定。
18．—When will the railway that connects the two cities open?— next year. Only half been completed.A. Until; hasB. Not until; hasC. Until; haveD. Not until; have【答案】 B【解析】【分析】句意：——连接两个城市的铁路什么时候会开通？——直到明年。
只完成了一半。
until意为“直到……为止”，通常与延续性动词连用；not until意为“直到……才”，常与短暂性动词连用，这里的句意为，直到明年才开通，故第一空用not until；第二空的half指的是half the railway，主语为the railway，谓语动词应用单数，因此填has，故选B。
【点评】考查连词和主谓一致。
注意识记until和主谓一致的用法。
19．_______________ you know the answer, please _______________ your hand quickly.A. If; riseB. If; raiseC. Whether; riseD. Whether; raise【答案】 B【解析】【分析】句意：如果你知道答案，请快速举起手。
if如果；whether是否；rise升起，实义动词；raise举起，实义动词，raise one's hand举起某人的手，固定搭配。