高考必考语法精讲精练专题十一：并列句与状语从句 Word版含解析

这是一份高考必考语法精讲精练专题十一：并列句与状语从句 Word版含解析，共10页。试卷主要包含了 并 列 句， 状 语 从 句等内容，欢迎下载使用。
状语从句是比较重要的语法项目。《2017年普通高等学校招生全国统一考试大纲》附录语法项目表中将状语从句列为必考项。全国卷新课标Ⅰ对状语从句的考查一般在完形填空、语法填空和短文改错中，主要考查从句引导词的用法。
2015年高考全国卷Ⅰ没有考查状语从句。
2016年高考全国卷Ⅰ第43题（完形填空）考查了状语从句引导词Since /Althugh /As /If的选择。
2017年高考全国卷Ⅰ没有考查状语从句。
一、 并 列 句
(一) 并列连词
①They cme frm the same cuntry，and they are gd friends.
②I was glad t meet Jenny again, but I didn't want t spend all day with her.(2013·新课标卷Ⅱ)
③It must have rained last night, fr it is wet all ver.
④Yesterday, I frgt t pick my daughter up, s she waited in the kindergarten fr nearly tw hurs.
⑤Wuld yu like t leave r wuld yu like t stay?
规律总结：
1．表示并列、顺承关系的并列连词有and。
2. 表示转折关系常用的并列连词有but, yet(然而), whereas(然而，但是), while(然而)等。
3．表示因果关系的并列连词有fr, s等。
4．表示选择关系常用的并列连词有r, either ... r ..., nt ... but, neither ... nr ...等。
(二) 祈使句＋and/r/therwise句式
①Wrk hard and yu will succeed.
＝If yu wrk hard, yu will succeed.
②Hurry up r we will be late.
＝If yu dn't hurry up, we will be late.
③A few mre effrts and yu will succeed.
＝If yu make a few mre effrts, yu will succeed.
规律总结：
1．祈使句＋and＋陈述句＝If ...，＋主句。
2．祈使句＋r/therwise＋陈述句＝If ... nt ...，＋主句。
二、 状 语 从 句
英语中状语从句总共有九类，分别用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。状语从句是较复杂的语法项目，但是理解起来并不难。从本质上讲，状语从句就是利用不同的关联词语将几个分句连接起来，以表达分句之间的特定逻辑关系。例如：
①I have brught an umbrella because it is raining.(原因)
②I have brught an umbrella in case it rains.(目的)
③I have brught an umbrellas that I dn’t get wet.(结果)
④I have brught an umbrella even thugh it’s nt raining.(让步)
= 5 \* GB3 \* MERGEFORMAT ⑤Yu dn’t need bring an umbrellaunless it is raining.(条件)
因此，学习状语从句的关键是掌握引导九类状语从句的关联词，只要能记住关联词，一般都能识别是哪种状语从句，从而正确分析句子结构并理解句子意思。
下面分别对九大类别的状语从句进行举例说明：
（一）时间状语从句
时间状语从句表示时间。
引导时间的状语从句的常用引导词有：when, as, while, as sn as, while, befre, after, since , till, until 等。
特殊引导词有：the minute, the mment, the secnd, every time, the day，the instant, immediately , directly, n sner … than, hardly … when, scarcely … when 等。
1.when/while/as/whenever
①When I went int the ffice, the teachers were having a meeting.
②While I was ding my hmewrk, they came in.
③As time ges by, it's getting warmer and warmer.
④When/While/As I was walking dwn the street, I came acrss an ld friend f mine.
= 5 \* GB3 \* MERGEFORMAT ⑤We shall g there whenever we are free.
规律总结：
(1)when既可引导一个持续动作，也可引导一个短暂动作，可用于主句和从句动作同时发生或从句动作先于主句动作。
(2)从属连词while引导的动作必须是持续性的，侧重主句动作和从句动作相对比。
(3)从属连词as可表示从句和主句的两个动作交替进行或同时完成，可译为“一边……(，一边……)”或“随着……”。
(4)如果主句表示的是短暂性动作，而从句用延续性动词的进行时态表示在一段时间内正在进行的动作，此时when, while与as可互换使用。
(5)whenever是when的强势语，它描述的不是一次性动作，而是经常发生的习惯性动作，翻译成“无论何时”。
2.when的特殊用法
①He was abut t g t bed when the drbell rang.
②They were watching the Wrld Cup when suddenly the lights went ut.
③They had just arrived hme when it began t rain.
规律总结：
when引导时间状语从句，意为“正在这时”，表示某件事正要发生、正在发生或刚刚发生时，突然发生另一动作。常见句型有：
①was/were abut t d sth. when...
=was/were n the pint f ding sth. when...
②was/were ding sth. when...
③had (just) dne sth. when...
3．表示“刚……就……，一……就……”的常用表达
①The mment I heard the vice, I knew father was cming
②The by burst int tears immediately he saw his mther.
③He had n sner finished his speech than the students started cheering.
＝N sner had he finished his speech than the students started cheering.(2011·辽宁高考)
④I had hardly gt t the ffice when my wife phned me t g back hme at nce.
=Hardly had I gt t the ffice when my wife phned me t g back hme at nce.
= 5 \* GB3 \* MERGEFORMAT ⑤Once yu see him, yu will never frget him.
规律总结：
(1)as sn as, immediately, directly, instantly, the mment, the minute, the instant, n sner ... than ..., hardly/scarcely ... when ...和nce这些从属连词引导的从句都表示从句的动作一发生，主句的动作随即就发生， 常译为“一……就……”。
(2)n sner ... than ...，hardly/scarcely ... when ...的时态搭配：n sner与hardly/scarcely后的句子谓语动词应用过去完成时，而than与when引导的句子谓语动词应用一般过去时。此外，当把n sner和hardly/scarcely提到句首时，应用倒装语序。【注意】“一……就……”还可用n /upn ding 结构来表示。
On arriving hme he called up Lester.=As sn as he arrived hme, he called up Lester.
4．befre与since
①Yu must learn t cnsult yur feelings and yur reasn befre yu reach any decisin.(2013·湖南高考)
②It will be five years befre we meet again.
③Jhn thinks it wn't be lng befre he is ready fr his new jb.(陕西高考)
④It was several years befre I realized that David had lied t me.
= 5 \* GB3 \* MERGEFORMAT ⑤It was nt lng befre I realized I was wrng.
= 6 \* GB3 \* MERGEFORMAT ⑥As is reprted, it is 100 years since Qinghua University was funded.(2011·四川高考)
规律总结：
(1)befre表示“还未……就……；不到……就……；……才……；趁……；还没来得及……就……，在……之前”。
(2)It will be＋时间段＋befre +一般现在时。“要过多久才……”
(3)It wn't be lng befre +一般现在时。“不久之后就会…”。
(4)It was＋时间段＋befre+一般过去时。“过了多久才……”。
(5)It wasn’t lng befre+一般过去时。“没过多久就……”
(6)It is＋一段时间＋since ...“自从……多久了”。
5．表示“每次；下一次……”的常用表达
①Every/Each time I was in truble, he wuld cme t help me ut.
②Next time yu cme, d remember t bring yur sn here.
③The last time she saw James, he was lying in bed.
规律总结：
every time, each time, next time, the last time, any time等名词短语用来引导时间状语从句，表示“每当……；每次……；下次……”等。
6．till, until和nt ... until
①Have yu heard the meeting will be put ff till/until next Tuesday?
②I wn nt tell the student the answer t the math prblem until he has been wrking n it fr mre than an hur.
规律总结：
(1)until或till表示“某动作一直延续到某时间点才停止”，此时主句谓语动词是延续性动词，主、从句都为肯定式。这两个词可以换用，但till不可以置于句首，而until可以。
(2)nt ... until表示“某动作直到某时间才开始”，主句谓语动词是非延续性动词，从句为肯定式。
（二）地点状语从句
地点状语从句表示地点、 方位。
引导地点状语从句的常用的引导词是where ；
特殊引导词有：wherever。例如：
①Make a mark where yu have a questin.
②Where there is a will, there is a way.
③Where there is water there is life.
④Generally speaking, air will be heavily plluted where there are factries.
= 5 \* GB3 \* MERGEFORMAT ⑤Yu are free t g wherever yu like.
= 6 \* GB3 \* MERGEFORMAT ⑥Wherever yu g, yu must bey the law.
= 7 \* GB3 \* MERGEFORMAT ⑦Wherever yu g, yu shuld wrk hard.
= 8 \* GB3 \* MERGEFORMAT ⑧Sit wherever yu like.
规律总结：
(1)地点状语从句通常由连词where和wherever引导，从句可位于主句之前，也可位于主句之后。
(2)地点状语从句在句首时常兼有抽象条件意味。
（三）原因状语从句
原因状语从句表示原因或理由。
引导原因状语从句的常用引导词有：because, since, as , fr,nw (that)等。
特殊引导词有：seeing(that), in (that), cnsidering (that)等。例如：
①He is disappinted because he didn't get the psitin.
②As it is raining, I will nt g ut.
③As he didn’t knw much English, he lked up the wrd in the dictinary .
④Since everyne is here, let’s begin ur meeting.
= 5 \* GB3 \* MERGEFORMAT ⑤Nw that yu mentin it, I d remember.
= 6 \* GB3 \* MERGEFORMAT ⑥Nw (that) the weather has cleared up, we can start ur jurney.
= 7 \* GB3 \* MERGEFORMAT ⑦Seeing (that) he was badly ill, we sent fr the dctr.
= 8 \* GB3 \* MERGEFORMAT ⑧Cnsidering that they are just beginners, they are ding quite gd jb.
（四）目的状语从句
目的状语从句用来说明主句中谓语动词发生的目的。目的状语从句的谓语常含有may, might, can, culd, shuld, wuld等情态动词。
引导目的状语从句的引导词或词组有：that,s that, in rder that
特殊引导词有：lest, in case, fr fear that,in the hpe that, fr the purpse that例如：
①Speak clearly, s that they may understand yu.
②She has bught the bk in rder that she culd fllw the TV lessns.
③They wrked harder than usual in rder that they culd finish the wrk ahead f time .
④He left early in case he shuld miss the train.
= 5 \* GB3 \* MERGEFORMAT ⑤Put n mre clthes lest (= fr fear that ) yu shuld catch cld.
（五）结果状语从句
结果状语从句表示事态结果，通常主句是原因，从句是结果。
引导结果状语从句的常用引导词有：s,that,s that,s … that, such … that。例如：
①She was ill, s that she didn’t attend the meeting.
②He was s excited that he culd nt say a wrd.
③She is such a gd teacher that everyne admires her.
④He gave such imprtant reasns that he was excused.
= 5 \* GB3 \* MERGEFORMAT ⑤It is such an interesting nvel that all f us want t read it.
= 6 \* GB3 \* MERGEFORMAT ⑥It is s interesting a nvel that all f us want t read it.
【注意】 如此……以致……。其引导的果状语从句有如下四种结构：
1．s + 形容词副词 + that从句
①The village is s small that it cannt be shwn in the map.
②The wind was s strng that we culd hardly mve frward.
2．s + 形容词 + a/ an + 单数名词 + that从句
①It was s ht a day that they all went swimming.
②He made s inspiring a speech that everybdy gt excited.
3．s + many/few +复数可数名词+ that从句
①I have had s many falls that I am black and blue all ver.
②He has s few friend that he ften feels lnely.
4．s + much/little +不可数名词 + that从句
①I had s little mney then that I culdn't even affrd a used car.
②He drank s much wine last night that he felt terrible.
【注意】 如此……以致……。其引导的结果语从句有如下四种结构：
1．such + a/an + 形容词 + 单数可数名词 + that从句
①Jenny is such a clever girl that all f us like her very much.
②We left in such a hurry that we frgt t lck the dr.
2．such + 形容词 +复数可数名词+ that从句
①He gave such imprtant reasns that he was excused.
②They are such interesting nvels that all f us want t read them.
3．such + 形容词 + 不可数名词 + that从句
①He made such rapid prgress that the teacher praised him.
②He shut the windw with such frce that the glass brke.
提示：such+ a /an+形容词+单数名词结构可以和s +形容词+a an+单数名词结构互换。
He tld us such a funny stry that we all laughed.
=He tld us s funny a stry that we all laughed.
=The stry he tld us was s funny that we all laughed.
【区别】such/ s……that……引导的状语从句和such/ s……as……引导的定语从句。
①He is such a clever by that we everyne likes him. (状语从句)
②He is s clever a by that we everyne likes him (状语从句)
③She had such a fright that she fainted. (状语从句)
④He is s clever a by as everyne likes. ( 定语从句)
= 5 \* GB3 \* MERGEFORMAT ⑤He is such a clever by as everyne likes. ( 定语从句)
= 6 \* GB3 \* MERGEFORMAT ⑥Luckily such earthquakes as can cause a lt f damage dn’t happen very ften.（定语从句）
（六）条件状语从句
条件状语从句分真实性（有可能实现的事情）与非真实性（条件与事实相反或者在说话者看来不大可能实现的事情）条件句。
引导条件状语从句的常用引导词有：if, unless
特殊引导词有：as/s lng as, nly if, prviding/prvided that, suppse/suppsing that, in case that, n cnditin that，s (as) far as, if nly ( = if )。
注意：条件从句中的if 不能用whether替换。例如：
①If he is nt in the ffice, he must be ut fr lunch.
②Yu may brrw the bk s lng as yu keep it clean.
③S far as I knw, he will be away fr three mnths.
④Yu can g swimming n cnditin that ( = if ) yu dn’t g t far away frm the river bank.
= 5 \* GB3 \* MERGEFORMAT ⑤If he had cme a few minutes earlier, he culd have seen her.
A .if真实条件句
真实条件句表示的假设是可能发生或实现的，主句和从句的谓语动词都要用陈述语气。
①If he desn't cme at 8, we wn't wait fr him.
②If a fld happened in the past, there was usually a great lss f life and prperty.
B．if非真实条件句
在含有非真实条件句的复合句中，假设的情况是不存在的或不大可能发生的，主句和从句的谓语动词都要用虚拟语气。（本部分详见语法专题九：虚拟语气）
（七）让步状语从句
让步状语从句表示让步关系。
引导让步状语从句常用的引导词有：thugh, althugh, even if, even thugh
特殊引导词有：as(用在让步状语从句中必须要倒装)，while (一般用在句首 )，in spite f the fact that, (nt) , n matter+特殊疑问词,whatever, whever, wherever, whenever, hwever, whichever等.例如：
①Althugh he is a child, he knws a lt.
②Child as/thugh he is, he knws a lt.
③Althugh (Thugh) he was ver sixty, he began t learn French.
④I’ll g t wrk even if (thugh) it rains tmrrw.
= 5 \* GB3 \* MERGEFORMAT ⑤Whether yu believe it r nt, it's true.
= 6 \* GB3 \* MERGEFORMAT ⑥Whatever yu say, I’ll never change my mind.
= 7 \* GB3 \* MERGEFORMAT ⑦Whatever happens / may happen , we shall nt lse heart.
= 8 \* GB3 \* MERGEFORMAT ⑧N matter wh helps me ,I shall be very grateful.
= 9 \* GB3 \* MERGEFORMAT ⑨N matter hw busy he was, he studied English every day.
（八）方式状语从句
方式状语从句表示动作的方式。
引导方式状语从句的引导词有：as, as if (thugh)等。例如：
①Yu must d the exercise as I shw yu.
②D as yu are tld.
③She lks as if she is ill.
④They treat the black by as if (thugh) he were an animal.
= 5 \* GB3 \* MERGEFORMAT ⑤He acted as if (thugh) nthing had happened.
规律总结：
as if或as thugh引导的从句一般用虚拟语气，但如果从句中所陈述的情况很可能实现，用陈述语气。
（九）比较状语从句
比较状语从句表示比较关系。
引导比较状语从句的引导词有：than, s (as) … as, the mre … the mre等。例如：
①I have made a lt mre mistakes than yu have.
②She has made greater prgress this year than she did last year.
③He smkes cigarettes as expensive as he can affrd.
④Mary is as ld as my sister.
= 5 \* GB3 \* MERGEFORMAT ⑤The mre yu read, the better yu understand.
= If yu read mre, yu will understand better.
= 6 \* GB3 \* MERGEFORMAT ⑥The mre tickets yu sell, the mre mney yu will get.
= 7 \* GB3 \* MERGEFORMAT ⑦The harder yu wrk, the greater prgress yu will make.
= 8 \* GB3 \* MERGEFORMAT ⑧The sner, the better.
= 9 \* GB3 \* MERGEFORMAT ⑨The busier he is, the happier he feels.
= 10 \* GB3 \* MERGEFORMAT ⑩The mre difficult the questins are, the less likely I am t be able t answer them.
（十）使用状语从句时要注意的几个问题
1、在时间和条件（有时在方式、让步等）从句中，主句是一般将来时，从句通常用一般现在时表示将来。例如：
①We’ll g uting if it desn’t rain tmrrw.
②I’ll write t yu as sn as I get t Shanghai.
2、有些时间、地点、条件、方式或让步从句，如果从句的主语与主句主语一致（或虽不一致，是it），从句的谓语又包含动词be ，就可省略从句中的“主语 + be”部分。例如：
① When (he was) still a by f ten, he had t wrk day and night.
②If (yu are) asked yu may cme in.
③If (it is) necessary I’ll explain t yu again.
④Dn’t speak until (yu are)spken t.
= 5 \* GB3 \* MERGEFORMAT ⑤Pressure can be increased when (it is)needed.
= 6 \* GB3 \* MERGEFORMAT ⑥Unless (it is) repaired, the washing machine is n use.
= 7 \* GB3 \* MERGEFORMAT ⑦Lk ut while (yu are) crssing the street.
3、注意区分不同从句：引导的是什么从句，不仅要根据连词，还要根据句子结构和句意来判别。以where为例，能引导多种从句。例如：
①Yu are t find it where yu left it.（状语从句）
②Tell me the address where he lives.（定语从句）
③I dn’t knw where he came frm.（宾语从句）
④Where he has gne is nt knwn yet.（主语从句）
= 5 \* GB3 \* MERGEFORMAT ⑤This place is where they nce hid.（表语从句）
高考英语短文改错及语法填空分析与训练·非谓语动词
考点规律分析：全国卷新课标Ⅰ语法填空和短文改错中对状语从句的考查主要是针对从句引导词的选择。
状语从句单句语法填空之真题训练：
1.(2016·天津，7) the average age f the ppulatin increases，there are mre and mre ld peple t care fr.
2.(2016·全国Ⅲ，七选五)When yu have bught a fish and arrive hme, yu’d better stre the fish in the refrigeratr ________yu dn’t ck it immediately.
3.(2016·北京，27)My grandfather still plays tennis nw and then，________he’s in his nineties.
4.(2016·北京，33)I really enjy listening t music ________it helps me relax and takes my mind away frm ther cares f the day.
5.(2016·四川，阅读B)________ yu d, dn’t be a bystander.
6.(2016·四川，66)________the little panda cried, the mther rcked it back and frth and gave it little cmfrting pats.
7.(2016·江苏，26)________sme peple are mtivated by a need fr success, thers are mtivated by a fear f failure.
8.(2016·浙江，5)________nline shpping has changed ur life, nt all f its effects have been psitive.
9.(2015·江苏，26)It is s cld that yu can't g utside ________ fully cvered in thick clthes.
10.(2015·湖南，33)________ the jb takes a significant amunt f time, mst students agree that the experience is wrth it.
11.(2015·北京，28)Yu wn't find paper cutting difficult ________ lng as yu keep practicing it.
12.(2015·北京，32)________ the damage is dne, it will take many years fr the farmland t recver.
13.(2015·浙江，9)Just ________ a single wrd can change the meaning f a sentence, a single sentence can change the meaning f a paragraph.
14.(2015·重庆，4)If yu miss this chance, it may be years ________ yu get anther ne.
15.(2015·天津，12)We need t get t the rt f the prblem________ we can slve it.
16.(2015·安徽，23)________scientists have learned a lt abut the universe, there is much we still dn't knw.
17.(2015·福建，31)________ the students came frm different cuntries, they gt alng quite well in the summer camp.
18.(2014·安徽，25)The meaning f the wrd“nice”changed a few times ________ it finally came t include the sense“pleasant”．
19.(2014·江西，35)It was the middle f the night ______ my father wke me up and tld me t watch the ftball game.
20.(2014·陕西，24)The yung cuple，wh returned my lst wallet，left ________ I culd ask fr their names.
21.(2014·重庆，14)Half an hur later，Lucy still culdn't get a taxi ______ the bus had drpped her.
22.(2014·北京，29)Even ________ the frest park is far away，a lt f turists visit it every year.
23.(2014·江苏，21)Lessns can be learned t face the future，________ histry cannt be changed.
24.(2014·山东，2)I dn't really like the authr，________ I have t admit his bks are very exciting.
25．(2014·湖南，26)Yu will never gain success ________ yu are fully devted t yur wrk.
26．(2014·天津，4)________ yu start eating in a healthier way，weight cntrl will becme much easier.
学习札记：
状语从句单句语法填空之真题训练：
1．C [考查状语从句。句意为：随着人口平均寿命的延长，越来越多的老人需要照顾。as在此处引导状语从句，表示“随着”。]
2．if [考查状语从句，根据句意：当你买了鱼回家的时候，如果你不立刻做的话，最好先存储到冰箱里。可以看出是条件关系。]
3．even thugh/thugh [考查连词。句意：尽管我祖父已经九十多岁了，但他仍不时打网球。由句意可知，本句的前后两部分之间为让步关系。]
4．because [考查状语从句。句意：我真的很喜欢听音乐，因为它有助于我放松，让我忘记一天中的其他忧虑。根据句意可知，句子前后为因果关系。]
5．Whatever [句意：无论你做什么，都不要做旁观者。whatever引导让步状语从句。]
6．When/If [如果小熊猫哭了，妈妈来回摇晃它，给它安慰。when既可表示时间也可表示条件。]
7．While/Althugh/Thugh [考查让步状语从句的用法。句意：尽管有些人受到成功的激励，而另外一些人却因恐惧失败而前进。根据句意可知，这两句话之间为转折对比关系]
8．While/Althugh/Thugh[考查连词。句意：尽管网上购物已经改变了我们的生活，但是不是所有的影响都是积极的。While/Althugh/Thugh引导让步状语从句，意为“尽管，虽然”。]
9．unless [句意：外面很冷，如果你不穿着厚衣服的话你不能出去。unless 除非，如果不。该题实际上也考查了状语从句的省略，其完整形式为 unless yu are fully...]
10．While/Althugh/Thugh [句意：虽然这项工作花费大量的时间，但是大部分的学生认为这次经历是值得的。While/Althugh/Thugh虽然，符合句意。]
11．as/s [句意：只要你坚持练习剪纸，你就不会觉得剪纸难了。as/s lng as只要，符合句意。]
12．Once [句意：一旦造成损害，要花费许多年的时间耕地才能恢复。nce一旦，符合句意。]
13．as [句意：正如一个单词可以改变句子的意义一样，一个句子也可以改变一段的意义。just as正如，正像，符合句意。]
14．befre [句意：如果你错过这次机会，可能得过好几年你才能再得到机会。befre “在……之前”，引导时间状语从句。]
15．befre [句意：我们需要找到问题的根源后才能解决它。考查时间状语从句。根据逻辑关系可知，“找到问题的根源”在“解决问题”之前发生。]
16．While/Althugh/Thugh [句意：尽管科学家们对宇宙已经了解甚多，但有许多我们还不知道的。 考查状语从句的连接词。该题主要考查让步状语从句。]
17．While/Althugh/Thugh [句意：尽管那些学生来自不同的国家，但是他们在夏令营时相处得很好。考查状语从句的连接词。]
18．befre [考查时间状语从句。句意：“nice”的含义改变了好几次，最终才包含了“pleasant(愉快的)”这层含义。当表达“还没来得及……就……”时，须用连词befre。]
19．when [考查时间状语从句。通读题干可知：父亲叫醒我看足球赛时，已是夜半时分。when符合语境。]
20．befre [考查状语从句的连接词。句意：那对送还我钱包的夫妇，我还没来得及问他们的姓名，他们就离开了。根据句意，我问他们之前，他们离开，befre意为：没来得及。]
21．where [考查地点状语从句。句意：半小时过后，露西在她下公共汽车的地方还没有搭上出租车。由句意可知地点状语从句中缺少地点副词，故where为答案。]
22．if/thugh [考查状语从句。句意：即使森林公园很远，每年仍有很多游客来参观。根据句意，可以判断出两句话为让步关系，所以用even if＝even thugh 即使。]
23．althugh/thugh [考查状语从句。句意：尽管历史无法更改，但我们可以从中获得面对未来的一些教训。根据语境可知前后文为让步关系。]
24．althugh/thugh [考查从属连词。句意：我真的不喜欢这位作者，尽管我不得不承认他的
书很激动人心。从句表示让步关系，故用althugh。]
25．unless [考查状语从句。句意：如果你不全身心投入到你的工作，你就永远不会成功。根据句意可知此句是条件状语从句。]
26．Once/If [考查状语从句的连接词。句意：一旦(如果)你开始用一种更健康的方式饮食，控制体重就会变得更容易了。]