2018年高考试题分类汇编含答案解析04从句
2018 高考英语北京卷 答案解析版
A. are trappingB. have been trappedC. were trappingD. had been trapped
A. TravelB. TravelingC. Having traveledD. Traveled
【答案】B
【解析】
考查动名词。句意：沿着丝绸之路旅行是一次既有趣又有益的经历。“____ along the old Silk Road”做主语，要用动名词，故B选项正确。
4. Susan had quit her well-paid job and _________ as a volunteer in the neighborhood when I visited her last year.
5. She and her family bicycle to work, _________ helps them keep fit.
A. whichB. whoC. asD. that
【答案】A
【解析】
考查非限制性定语从句。句意：她和家人骑自行车去上班，这有助于她们保持健康。“____ helps them keep fit”是非限制性定语从句，该从句修饰整个主句，引导词在从句中做主语，故该从句应用关系代词which引导。A选项正确。
第二节完形填空（共20小题；每小题1.5分，共30分）
阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
The Homeless Hero
近五年高考语法真题专练：定语从句（含解析）
近五年高考语法真题专练：定语从句（含解析）2018年高考题【2018」匕京】5. She and her family bicycle to work,helps them keep fit.A.whichB.whoC.asD.that【答案】A【解析】考查非限制性定语从句。
句意：她和家人骑自行车去上班，这有助于她们保持健康。
"helps them keep fit”是非限制性定语从句，该从句修饰整个主句，引导词在从句中做主语，故该从句应用关系代词which引导。
A选项正确。
【2018•天津】2.Kae,sister I shared a room with when we were at college,has gone to work in Australia.A.whomB.thatC.whoseD.her【答案】C【2018•江苏】23.Self-driving is an area China and the rest of the world are on the same starting line.A.thatB.whereC.whichD.when【答案】B【解析】考查定语从句。
句意：自动驾驶是一个中国和世界其它国家都在同一起跑线的领域。
句中先行词为area,在从句中作地点状语，故用关系副词where,相当于in which o 故选B。
2017年高考题【2017•北京卷】31.The little problems—we meet in our daily lives may be inspirations for great inventions.A.thatB.asC.whereD.when【答案】A[2017-江苏】28.In1963the UN set up the World Food Programme,one ofpurposes is to relieve worldwide starvation.A.whichB.it'sC.whoseD.whom【答案】C【解析】试题分析：考查定语从句。
近五年高考语法真题专练：并列句和状语从句(含解析)
近五年高考语法真题专练：并列句和状语从句（含解析）2018年高考题【2018·江苏】29. _______ you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.A. OnceB. UnlessC. IfD. When【答案】B【解析】考查连词词义辨析及语境理解。
句意：除非你睡得好，否则一两个晚上之后，你会失去专注、计划和保持动力的能力。
A. Once一旦；B. Unless除非；C. If如果；D. When 当……时候。
故选B。
【2018·天津】4. Let's not pick these peaches until this weekend ___________they get sweet enough to be eaten.A. ever sinceB. as ifC. even thoughD. so that【答案】D【2018·北京】2. _________ we don’t stop cl imate change, many animals and plants in the world will be gone.A. AlthoughB. WhileC. IfD. Until【答案】C2017年高考题【2017·北京】28. If you don’t understand something, you may research, study, and talk to other people _______ you figure it out.A. becauseB. thoughC. untilD. since【2017·北京】25. ______ birds use their feathers for flight, some of their feathers are for other purposes.A. OnceB. IfC. AlthoughD. Because【答案】C【2017·北京】22. —Peter, please send us postcards ______ we’ll know where you have visited.—No problem.A. butB. orC. forD. so【答案】D试题分析：A. but 但是 B. or 或者C. for 因为 D. so因此句意：Peter，请给我们寄明信片，因此我们就会知道你们去哪游览过，根据语境可知前后句之间是因果关系，故用so，选D。
高考语文分类汇编(含答案解析) 考点4 病句
考点4 病句1.(全国卷I)下列各句中,没有语病的一句是(3分) ( )A.为纪念抗日战争暨世界反法西斯战争胜利70周年,从现在起到年底,国家大剧院宣布将承办31场精心策划的演出。
B.根据国家统计局发布的数据,4月份我国居民消费价格指数出现自去年12月以来的最大涨幅,但仍低于相关机构的预测。
C.这部小说中的“边缘人”是一个玩世不恭、富有破坏性却真实坦白的群体,人们面对这类形象时会引起深深的思索。
D.为进一步保障百姓餐桌安全,国家对施行已超过5年的《食品安全法》作了修订,因加大了惩处力度而被冠以“史上最严”的称号。
【解析】选B。
本题考查的是辨析病句的能力。
A项,语序不当。
“从现在起到年底,”应该放到“国家大剧院宣布”之后,修饰限定承办演出的时间段。
C项,不合逻辑,“人们”“引起”“思索”不合逻辑,最后一个分句修改为“这类形象会引起人们深深的思索”。
D项,成分残缺,缺少主语,“因加大了惩处力度而被冠以‘史上最严’的称号”承前省略主语为“国家”,不对,应该添加主语“该法规”。
2.(全国卷II)下列各句中,没有语病的一句是(3分) ( )A.“地坛书市”曾经是北京市民非常喜爱的一个文化品牌,去年更名为“北京书市”并落户朝阳公园后,依旧热情不减。
B.“丝绸之路经济带”横跨亚、非、欧三大洲,其形成与繁荣必将深刻影响世界政治、经济格局,促进全球的和平与发展。
C.在那个民族独立和民族解放斗争风起云涌的时代,能激发人们的爱国热情是评判一部文学作品好坏的非常重要的标准。
D.父亲住院期间,梅兰每天晚上都陪伴在他身旁,听他讲述一生中经历的种种苦难和幸福,她就算再忙再累,也不例外。
【解析】选B。
本题重点考查辨析并修改病句的能力。
语病题通常的做法是压缩,看主干有没有残缺、搭配不当等毛病,再看压缩掉的修饰成分与主干之间是否存在修饰不当的毛病,最后看句子中有没有典型的语病特征。
A.偷换主语导致成分残缺,“依旧热情不减”的是市民。
2018高考英语语法考点归纳总结定语从句素材[附答案]
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高考英语语法：定语从句关系代词引导的定语从句一.关系代词的用法: 关系代词指代先行词在定语从句中作主语在定语从句中作动词的宾语或者介词的宾语, 介词在后指人that / whothat / who / whom指物that / whichthat / which上表中黑框内的关系代词可以省略; 在口语及非正式文体中whom常被who所替代; 另外, 关系代词whose表示 (先行词)的二.示例:1.关系代词在定语从句中作主语a. Do you know the man that / who came to see Xiao Yang this morning ?b. This is a book that / which tells about space rocket.2.关系代词在定语从句中作动词的宾语a. The comrade ( that / who / whom ) they came to visit is a scientist.b. I will never forget the day ( that / which ) we spent in the countryside.3.关系代词在定语从句中作介词的宾语, 介词在后a. This is the house ( that / which ) he was born in.b. The person ( that / who / whom ) you should write to is Mr Ball.c. The man ( that / who / whom ) you talked with is our English teacher.4.whose引导的定语从句a. I know a lady whose husband is a Nobel Prize winner.b. The child whose mother died in the fire is now an engineer in our company.c. He is living in a house whose windows are painted white.三.应注意的问题:1.指物时, 关系代词只用that而不用which的情况:①.先行词被最高级或the only, the very, the same等修饰时a. This is the best play that was written by Jack.b. He is the only person that I can trust.②.先行词被序数词或the last等词修饰时a. This is the first car that arrived this morning.③.先行词为all, everything, nothing, something, anything等不定代词时或被不定代词all, any, no等修饰时a. All the people that come from the country work much harder.b. This is all that I can tell you.④.人+动物或事物共同作为先行词时a. My father and Mr Brown talked of things and persons that they remembered for about an hour.⑤.句中又有which作为疑问词出现时a. Which is the train that goes to Beijing ?2.关系代词who, which, that在定语从句中作主语时, 要注意定语从句中的主谓一致问题. 因为who / that / which指代先行词, 所以定语从句的谓语与先行词保持一致即可a. I came to get the book that was left in the classroom.b. I came to get the books that were left in the classroom.关系副词引导的定语从句一.关系副词的用法: when在定语从句中作地点状语; where在定语从句中作地点状语; why 在定语从句中作原因状语二.示例:a. He was well at the time when I saw him.b. Let’s meet at the place where we met yesterday.c. This is the reason why I am in favor of the singer.三.应注意的问题:1.在某些表示时间的名词后的关系副词可省略, 这样的名词如: the time, every time, each time, the moment, the minute, the second等 (也有语法家认为是这些名词直接引导了时间状语从句)a. By the time ( when ) he was fourteen years old he had learned much English.介词+关系代词引导的定语从句一.说明: 关系代词在定语从句中作介词的宾语时, 介词可以位于关系代词之前, 从而构成介词+关系代词引导的定语从句二.这种定语从句中关系代词的用法: 在这种定语从句中, 关系代词只能用whom(指人)和which(指事物), 而不能使用that / who三.示例:a. This is the house in which he was born.b. The person to whom you should write is Mr Ball.c. The man with whom you talked is our English teacher.d. The gentleman, with whose daughter I worked, looked down upon woman.四.应注意的问题:1.关系代词前的介词可以是单个介词, 也可以是短语介词或类似短语介词的词组a. This is the house in which he was born.b. At five o’cloc k we reache d the house, in front of which there is a big tree.c. At five o’clock we reached the mountain, at the foot of which lie some farmhouses.2.根据表达的需要, 介词之前还可以有其他词, 从而构成名词或代词+介词+关系代词引导的定语从句a. I used to live in a small room, the window of which faces the street.b. At the gate stood a group of students, some of whom are girls.3.介词若为短语动词中的介词, 则不可将介词拆开放在关系代词之前a. This is the magazine whic h you are looking for.( for不能放在which之前)b. The child whom Aunt Li takes care of is ill.( of不能放在whom之前)4.关系副词when / where / why常可与介词+关系代词互换a. Do you remember the days when we were in Beijing? ( =in which we were in Beijing )b. Do you remember the park where we once played for a whole day?( =in which we once played for a whole day )c. This is the reason why he was absent yesterday. (= for which he was absent )限定性与非限定性定语从句一.两者的区别: 见下表形式作用译法限定性定语从句无逗号与主句分开修饰限定作用, 即不可缺少的定语其译文常位于先行词之前, 并体现的非限定性定语从句有逗号与主句分开附加、补充说明的作用, 若缺少它, 句意仍然完整常将其译成一个和主句并列的分句二.关系词的用法: 非限定性定语从句不能用that引导, 并且关系词在任何情况下都不能省略, 除此之外, 在关系词的使用上, 非限定性定语从句与限定性定语从句完全相同三.示例:a. My book, which is very old, is on the table.b. President Kennedy, who had heard of King before, was interested to meet him.c. His father, who is working in Beijing, is an engineer.d. The house, where he was born, has been destroyed in the earthquake.e. Mr. Smith, with whom you just talked, is our English teacher.f. The gentleman, with whose daughter I worked, looked down upon woman.四.应注意的问题:1.as / which都可以引导一个非限定性定语从句, as / which是关系代词, 指代主句中所提到的某种情况, 它们的不同点是:①.as引导的这种定语从句位置比较灵活, 可位于句首, 句中, 句尾; 但which引导的这种定语从句只能位于主句之后②. as还带有正如, 正象之意, 而which不含此意a. The earth is like a ball, as everyone knows.b. As everyone knows, the earth is like a ball.c. They said they were French, which wasn’t true.常见问题一.定语从句还原法: 试题中有很多有关定语从句的, 这类题往往需选择引导词部分. 做好这类题的关键首先是要有这样的观念: 定语从句应有完整而合理的句子成分. 基于这一点, 我们可以用还原法来检验定语从句是否正确, 即把定语从句还原成为一个简单句. 具体做法是:代词, 再将关系代词替换成先行词②.第二步: 调整, 即调整语序, 看能否构成一个合理的简单句例如, 还原以下例句a中的定语从句的过程是: 先将that / which替换成先行词the park, 再调整语序, 就能得到一个合理的简单句: We visited the park last year. 再如, 还原以下例句b中的定语从句的过程是: 先将where替换成in which, 再将which替换成先行词the park, 再调整语序, 就得到一个合理的简单句: We once played for a whole day in the park.a. Do you remember the park that / which we visited last year?b. Do you remember the park where we once played for a whole day?c. Do you still remember the days that / which we spent together ?d. Do you still remember the days when we were together?二.分隔定语从句: 定语从句一般紧跟在先行词之后, 但有时也被分隔开来, 在阅读时要注意根据定语从句所表达的意思来分辨先行词是什么a. I was the only person in the office who was invited.b. He was the only o ne of the students who passed the GRE.①.as引导的这种定语从句位置比较灵活, 可位于句首, 句中, 句尾; 但which引导的这种定语从句只能位于主句之后②. as还带有正如, 正象之意, 而which不含此意a. The earth is like a ball, as everyone knows.b. As everyone knows, the earth is like a ball.c. They said they were French, which wasn’t true.常见问题一.定语从句还原法: 试题中有很多有关定语从句的, 这类题往往需选择引导词部分. 做好这类题的关键首先是要有这样的观念: 定语从句应有完整而合理的句子成分. 基于这一点, 我们可以用还原法来检验定语从句是否正确, 即把定语从句还原成为一个简单句. 具体做法是:代词, 再将关系代词替换成先行词②.第二步: 调整, 即调整语序, 看能否构成一个合理的简单句例如, 还原以下例句a中的定语从句的过程是: 先将that / which替换成先行词the park, 再调整语序, 就能得到一个合理的简单句: We visited the park last year. 再如, 还原以下例句b中的定语从句的过程是: 先将where替换成in which, 再将which替换成先行词the park, 再调整语序, 就得到一个合理的简单句: We once played for a whole day in the park.a. Do you remember the park that / which we visited last year?b. Do you remember the park where we once played for a whole day?c. Do you still remember the days that / which we spent together ?d. Do you still remember the days when we were together?二.分隔定语从句: 定语从句一般紧跟在先行词之后, 但有时也被分隔开来, 在阅读时要注意根据定语从句所表达的意思来分辨先行词是什么a. I was the only person in the office who was invited.b. He was the only one of the students who passed the GRE。
(完整版)定语从句语法填空高考真题-2018(可编辑修改word版)
定语从句高考真题2010-20182018 年高考英语定语从句汇编1.(2018·全国Ⅰ)Two of the authors of the review also made a study published in 2014 showed a mere five to 10 minutes a day of running reduced the risk of heart disease.2.(2018 全国II)Between 2005-when the government started a soil-testing programgives specific fertilizer recommendations to farmers.3.（2018 浙江）Many westerners come to China cook much less than in their own countries.4.（2018•北京）She and her family bicycle to work, helps them keep fit.5.（2018 天津）Kae, sister I shared a room with when we were at college, has gone to work in Australia.6.（2018 江苏）Self-driving is an area China and the rest of the world are on the same starting line.7.（2018 北京）The little problems we meet in our daily lives may be inspirations for great inventions.2017 年高考英语定语从句汇编1.（2017 天津）My eldest son, work takes him all over the world, is in New York at the moment.2.(2017 江苏)In 1963 the UN set up the World Food Programme, one of purposes is to relieve worldwide starvation.3.(2017 北京)The little problems we meet in our daily lives may be inspirations for great inventions.4.(2017)The publication of Great Expectations, was both widely reviewed and highly praised, strengthened Dickens status as a leading novelist.5.(2017 江苏卷)We choose this hotel because the price for a night here is down to $20,half of it used to charge.6..(2017 全国Ⅲ)Sarah, has taken part in shows along with top models wants to prove that she has brains.7..(2017 全国I) It is possible to have too much of both, is not good for the health.2016 年高考英语定语从句汇编1．(2016·江苏)Many young people，most of were well－educated，headed for remote regions to chase their dreams.2．(2016·天津)We will put off the picnic in the park until next week，the weather may be better.3．(2016·天津)One day，mentally exhausted，I wrote down all the reasons this problem could not be solved.4．(2016·浙江)Scientists have advanced many theories about why human beings cry tears，none of has been proved.5．(2016·浙江)I made friends with the natives，and their reaction amazed me.They gave me presents of their favorite artworks they had refused to sell to tourists.6．(2016·四川)One important biological factor helps women live longer is the difference in hormones between men and women.7．(2016·北京)I live next door to a couple children often make a lot of noise.8．(2016·北京)So condors with high levels of lead are sent to Los AngelesZoo，they are treated with calcium EDTA，a chemical that removes lead from the blood over several days.9．(2016·全国Ⅰ)A nurse understands the healing(治愈) value of silence can use this understanding to assist in the care of patients from their own and from other cultures.10．(2016·全国Ⅰ)I had one trip last year I was caught by a hurricane in America.11..(2016 全国I) But my connection with pandas goes back to my days on a TV show in the mid-1980s, I was the first Western TV reporter。
2018年高考英语分类汇编 - 词、短语辨析(名词、动词、形容词、副词、代词和介词)
2018年高考及最新模拟分类汇编之词、短语辨析（名词、动词、形容词、副词、代词和介词）1.【2018·北京】14. —Good morning, Mr. Lee’s office.—Good morning. I’d like to make an appointment _________ next Wednesday afternoon. A. for B. on C. in D. at【答案】A【解析】考查介词。
句意：——早上好，Lee先生办公室。
——早上好。
我想预约下周三下午（和Mr. Lee见面）。
make an appointment for意为“为……预约”，是固定搭配，故A选项正确。
点睛：make an appointment with sb.和某人预约；make an appointment for为……预约。
2.【2018·天津】11. Bob thought he couldn't go to the party because he had to write a report, but he went ___________.A. at firstB. after allC. above allD. at random【答案】B点睛：本题侧重考查在特定的语境中辨析短语的能力。
对于短语而言，没有捷径可言，只有老老实实的记忆。
考生除了要充分利用特定语境理解词义，还需要重点关注他们用法上的区别。
3.【2018·天津】8. It took him a long time to___________ the skills he needed to become a good dancer.A. displayB. acquireC. teachD. test【答案】B【解析】考查动词词义辨析及语境理解。
句意：他花了很长时间才获得了成为一名优秀舞蹈家所需的技能。
2018年高考英语真题专题汇编 从句
2018年高考英语真题专题汇编从句1.如果我们不阻止气候变化，世界上许多动植物将会消失。
条件状语从句通常由if或unless引导。
条件是指某一件事情实现之后（状语从句中的动作），其它事情（主句中的动作）才能发生，通常译作“假如”。
2.她和她的家人骑自行车上班，这有助于他们保持健康。
非限制性定语从句即可修饰主句的一部分，也可以修饰整个主句。
其引导词的选择和限制性定语从句的判断规则一致，即：第一、找准先行词；第二、看先行词在定语从句中所作的成分。
需要注意的是，that不能引导非限制性定语从句。
3.在任何不安全的情况下，只需按下按钮，一个训练有素的特工就会为您提供所需的帮助。
祈使句+and/or+陈述句是一种常见结构。
当前后两部分间为承接关系时，用and；前后意思为相反关系时，用or。
该句式中的陈述句部分常用一般将来时态。
4.如果没有他的支持，我们不可能达到现在的位置。
这是一个名词性从句，用where引导，表示我们所处的位置。
因此选C。
5.这就是我父亲教给我的——始终面对困难，抱最好的希望。
这是一个名词性从句，用what引导，作为主语。
因此选D。
6.14.只有当汽车在我们房子前停下来，我们才看到在乘客位置的XXX。
这是一个强调句，强调时间状语only when the car pulled up in front of our house。
因此选B。
7.The gold medal will be awarded to whoever wins the first place in the bicycle race。
The use of "whoever" XXX.8.Let's wait until this weekend so that these peaches can get sweet enough to be eaten。
The use of "so that" emphasizes the purpose of waiting until the peaches are ripe.9.Kae。
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2018年高考从句1.【2018·北京】2. _________ we don’t stop climate change, many animals and plants in the world will be gone.A. AlthoughB. WhileC. IfD. Until【答案】C点睛：条件状语从句通常由引导词if或unless引导。
条件是指某一件事情实现之后（状语从句中的动作），其它事情（主句中的动作）才能发生，通常译作“假如”。
2.【2018·北京】5. She and her family bicycle to work, _________ helps them keep fit.A. whichB. whoC. asD. that【答案】A【解析】考查非限制性定语从句。
句意：她和家人骑自行车去上班，这有助于她们保持健康。
“____ helps them keep fit”是非限制性定语从句，该从句修饰整个主句，引导词在从句中做主语，故该从句应用关系代词which引导。
A选项正确。
点睛：非限制性定语从句即可修饰主句的一部分，也可以修饰整个主句。
其引导词的选择和限制性定语从句的判断规则一致，即：第一、找准先行词；第二、看先行词在定语从句中所作的成分。
需要注意的是，that不能引导非限制性定语从句。
3.【2018·北京】8. In any unsafe situation, simply _________ the button and a highly-trained agent will get you the help you need.A. pressB. to pressC. pressingD. pressed【答案】A【解析】考查祈使句。
句意：在任何不安全的情况下，仅仅摁一下这个按钮，一个训练有素的特工就会使你得到你需要的帮助。
and是连词，连接并列结构，and后面是一个句子，那么，前面也应是句子，选项中只有动词原形可以构成祈使句，其余的都是非谓语动词，无法构成句子。
故A选项正确。
点睛：祈使句+and/or+陈述句是一种常见结构。
当前后两部分间为承接关系时，用and；前后意思为相反关系时，用or。
该句式中的陈述句部分常用一般将来时态。
4.【2018·北京】11. Without his support, we wouldn’t be _________ we are now.A. howB. whenC. whereD. why【答案】C【解析】考查名词性从句。
句意：没有他的支持，我们是不会在现在这个位置的。
how表方式，when表时间，where表地点，why表原因。
“_________ we are now”是表语从句，结合句子的意思可知，该处指我们所处的位置，故该从句应用where引导。
C选项正确。
点睛：表语从句是指一个句子充当表语，通俗的说就是系动词be后面接一个句子。
连接表语从句的连接词有that，what，who，when，where，which，why，whether，how等。
5.【2018·北京】15. This is _________ my father has taught me—to always face difficulties and hope for the best.A. howB. whichC. thatD. what【答案】D点睛：what是常见的名词性从句引导词之一，它除了引导从句作用之外，还在从句中做主语，宾语，表语或者定语。
根据不同的语境，what可以表示不同的意思，例如“……的东西或事情”，“……的人或样子”等。
6.【2018·天津】14. It was only when the car pulled up in front of our house ___________we saw Lily in the passenger seat.A. whichB. thatC. whenD. where【答案】B【解析】考查强调句。
句意：只有当汽车在我们房子前停下来我们才看到在乘客位置的莉莉。
这里考查强调句，强调句型结构为：It is/ was + 被强调部分(通常是主语、宾语或状语)+ that/ who(当强调主语且主语指人)+ 其他部分。
本题强调时间状语only when the car pulled up in front of our house。
故选B。
点睛：本题考查强调句，要求有学生掌握好强调句的常用句型以及相关知识的能力。
分析句子时首先要看清楚结构，It is / was…开头而后面跟句子时就要看它是不是强调句了。
强调句有一个特点：拿掉It was/is…that…后不影响整个句子的完整性，则是强调句。
判断完是不是强调句后再根据强调的部分是人还是物来选择连接词that或者是who。
7.【2018·天津】9. The gold medal will be awarded ___________to wins the first place in the bicycle race.A. whomeverB. whereverC. whoeverD. whatever【答案】C【解析】考查名词性从句连接词。
句意：无论谁获得自行车比赛第一名，金牌将授予他。
分析句子可知，宾语从句中缺少主语，故用whoever，表示“任何人，无论谁”。
故选C。
点睛：分析句子可知，空格处做be awarded to的宾语，同时在后面的从句中做主语，再根据句意可知，这里主语指人，故用whoever。
8.【2018·天津】4. Let's not pick these peaches until this weekend ___________they get sweet enough to be eaten.A. ever sinceB. as ifC. even thoughD. so that【答案】D点睛：本题考查连词短语词义辨析。
解题时要区分清选择项的含义与区别，再联系句意可以判断，这里考查so that引导的目的状语从句。
9.【2018·天津】2. Kae, _________sister I shared a room with when we were at college, has gone to work in Australia.A. whomB. thatC. whoseD. her【答案】C【解析】考查定语从句关系词。
句意：凯特已经去澳大利亚工作了。
我们在大学的时候，我和她的姐姐共住一室。
分析句子，句中先行词为Kate，在非限定性定语从句中作名词sister 的定语，故用关系代词whose。
故选C。
点睛：本题考查定语从句。
定语从句是高考重点考查知识之一，分析定语从句需抓住两点：1.找准先行词；2.看先行词在从句中所作的成分。
抓住这两点，再根据句意，从而能够判断出正确的关系词。
10.【2018·江苏】29. _______ you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.A. OnceB. UnlessC. IfD. When【答案】B【解析】考查连词词义辨析及语境理解。
句意：除非你睡得好，否则一两个晚上之后，你会失去专注、计划和保持动力的能力。
A. Once一旦；B. Unless除非；C. If如果；D. When当……时候。
故选B。
点睛：本题考查连词辨析。
解题时要区分清选择项的含义与区别，再联系句意进行判断，从而选出正确答案。
11.【2018·江苏】23. Self-driving is an area _______ China and the rest of the world are on the same starting line.A. thatB. whereC. whichD. when【答案】B【解析】考查定语从句。
句意：自动驾驶是一个中国和世界其它国家都在同一起跑线的领域。
句中先行词为area，在从句中作地点状语，故用关系副词where，相当于in which。
故选B。
点睛：本题考查定语从句。
定语从句是高考重点考查知识之一，分析定语从句需抓住两点：1.找准先行词。
2.看先行词在从句中所作的成分。
抓住这两点，再根据句意，从而能够判断出正确的关系词。
12.【2018·江苏】21. By boat is the only way to get here, which is _______ we arrived.zx.x.kA. whereB. whenC. whyD. how【答案】D点睛：本题考查表语。
首先需要弄清句意及分析句子结构，然后根据前句By boat is the only way to get here提示可知作方式状语，就不难选出正确答案。