核心语法知识精讲精练(通用版)

1、高考核心语法知识点精练14（特殊句式-省略与替代）I.When challenges and setbacks, he remains, brave and firm.A.faced withhesitantB.facing resoluteC.in face ofindecisiveD.facing with determined2 .He is only too ready to help others, seldom, refusing them when they turn to him.A.if neverB.if everC.if notD.if any3 . Have you g

2、ot any particular plans for the coming holiday?Yes., I'm going to visit some homes for the old in the city.A.If everB.If busyC.If anything.D.If possible4 .Someexperts believe that the students, once to computer games, will probably loseopportunities of progressing.A.addictingB.addictedC.having a

3、ddictedD.being addicted5 .Daniel has undertaken to keep the secret, so he won' t tell anyone even though.A.asked to keepB.to be askedC.to askD.asked to6 .Though by her classmates, the little girl didn' t burst into tears or be in despair.A.leaving outB.left outC.being left outD.leave out7 .W

4、hen learning he was admitted to a key college,.A.he burst into tearsB.tears came to his eyesC.he can hardly keep back his tears D.and his parents were wild with joy8 .There are some health problems that, if in time, can become bigger ones later on.A.not treatedB.not being treatedC.not to be treatedD

5、.not having been treated9 .When entering the office,.A.Winifred was found sitting at a deskB.Winifred was found sat at a deskC.we found Winifred seated at a deskD.we found Winifred seating at a desk10 .Generally speaking according to the directions the drug has no side effect.A.when takingB.when tak

6、enC.when to takeD.when to be taken11 .It ' s really a pity that you didnFroZengo Itossnight.I, but I had to prepare for the coming exam.A.would like to B.ought toC.would have D.may have12 .When deeply in work, he always forgets all about eating or sleeping.A.absorbingB.trappingC.absorbedD.trappe

7、d13 .When the two countries, we ' ve found they have much in common.A.comparedB.compareC.being compared D.comparing13.1 n the United States, St Louis has now become the 4th largest city.A.It is the 24th biggest cityB.It was the 24th biggest cityC.Once the 24th biggest cityD.Before the 24th bigge

8、st city15 .The boy, though up in the countryside, soon adapted himself to the way of life in this big city.A.bringingB.having brought C.broughtD.being brought16 .Although to stop, he kept on workingA.tellB.tellingC.having toldD.told17 .When for his views about his teaching job, Philip said he found

9、it very interesting andrewarding.A.askingB.askedC.to askD.having asked18 .When how a statue from distant Greece could have appeared in China, researchersexplained that this was a result of Alexander the Great' s influence.A.asking; no doubt B.asking; no wonder C.asked; no doubt D.asked; no wonde

10、r19 .What do you feel when to yourself after your mobile phone battery runs out in the middle ofa call?A.leaving talkingB.left talkingC.being leaving talkingD.being left talking20 .When from the top of the hill, the whole city looks more beautiful.A.seeingB.seenC.is seenD.is seeing21.I am short and

11、thin, but I run fast, I hope they will accept me.A.as I amB.as it isC.as it doesD.as I do22.Having an outdoor meal is always fun, but it can also be damaging to the planet if.A.planned not carefullyB.not planning carefullyC.not planned carefullyD.not to be planned carefully1.1 It is dangerous to dri

12、ve the car whileon the phone.A.talkB.talkingC.talkedD.to talk24 .Although money at that time, I managed to buy the piano for my daughter.A.lackedB.lackingC.lacking ofD.lacked it25 .A good interviewer is able to tell very quickly if you ve done your homework about the cmake sure you !A.doB.haveC.will

13、 doD.did26 .The experiment shows that proper amounts of exercise, ifregularly, can improve our health.A.being carried outB.carrying outC.carried outD.to carry out27 .The climate here is quite pleasant, the temperature rarely, , reaching 30 iA.if notB.if everC.if anyD.if so28 . “ If ” , he added, “ e

14、nough time, I would certainly have done it better.”A.to giveB.being givenC.givenD.giving29 .Unless to speak, most high school students here prefer remaining silent in class.A.invitedB.invitingC.being invited D.having invited30 .money, his parents managed to send him to university.A.LackedB.Lacking o

15、fC.Though lackingD.Lacked in31.I wonder why you won't do it as . It's the third time you have done so.A.you told toB.be toldC.tell youD.told to1.1 It is believed that, , the situation will get worse.A.if it not dealt carefully withB.if only dealt carefully withC.if not carefully dealt withD.

16、it is not carefully dealt with1.5 Small sailboats can easily turn over in the water .A.if not managed carefullyB.if are not managed carefullyC.unless not managed carefullyD.unless are not managed carefully34 .Video games can be a poor influence if in the wrong hands.A.to leaveB.leavingC.leaveD.left3

17、5 .No matter how frequently , the works of Beethoven still attract people all over the world.A.performedB.performingC.to be performedD.being performed36 .Fear is one of the many enemies hidden inside us, and if uncontrolled, it can destroy our lives.A.leavingB.leftC.having left D.to be left37 .Lei F

18、eng was a person who was only too ready to help others, seldom , refusing them whenthey turned to him.A.if neverB.if everC.if notD.if any38.It sounds like something is wrong with the car s engine. , we d better take it timmediately.A.OtherwiseB.If notC.But for thatD.If so39.1 f weather permits, we l

19、l go on a hike in the mountain. But if , .A.not, notB.no, noC.not, noD.no, not40.Nurseries are the areas where plants are grown to be sold or in other places.A.being plantedB.to plantC.plantD.planted41.Mimosa, 15 cm in height, is a sensitive small plant, which will close when .A.touchingB.touchedC.i

20、s touchedD.to be touched42.Our tutor would listen to us reading our essays aloud, but rarely, , commented on them.A.if everB.if anyC.if possibleD.if anything43.The text and dialogues below focus on cultural differences between Chinese and Western societies which can create misunderstanding if .A.ign

21、oreB.to be ignored C.ignoringD.ignored44.When , the library will be open to the public next year.A.completedB.completingC.being completed D.to be completed45.Don t in the exam while an exam.A.calm, takeB.cheat, takingC.list, takingD.ignore, take46.If more time, we can do it better.A.giveB.givingC.gi

22、venD.gave47.If green, the door might look more beautiful.A.paintB.paintedC.to paintD.painting48 .The mother told the little child not to speak to a stranger even if A.speakingB.spokenC.spoken toD.he spoken to49 .If in class, you will have to clean the classroom for a week as a punishment.A.to catch

23、to sleepB.caught to sleepC.catching sleepingD.caught sleeping50 .Friendship is like money, easier made than .A.being keptB.to be keptC.keepingD.kept51 .Although there is more female participation in IT workforce,a significant imbalance of maleand female senior positions.A.it remainsB.there remainsC.

24、there remainingD.that remains52 ., I went out for a walk.A.There was nothing to doB.There being nothing to doC.There had nothing to doD.There were nothing to do53 . How many species do you believe will be threatened with extinction when the reservoir is completed?I expect ten at least.A.there to beB

25、.there beingC.there beD.there have been54 .is a certain doubt among people the official advertisement has a misleadingeffect on customers ' choices of electronic products.A.It; thatB.There; thatC.It; whetherD.There; whether55.There no buses, we had to take a taxi.A.beingB.wasC.isD.were56.The vis

26、itors said that they had never dreamed such a beautiful scenery.A.there to beB.of there to beC.of there being D.of being57.seems to be some disagreement between his words and actions.A.ThereB.ItC.ThatD.What58 .Just to his surprise, he had never expected a woman calling herself his birth mother 20 ye

27、ars after his birth.A.there to beB.there beingC.there isD.there have been59 .There something wrong with the engine of the car, we had to go to the park by taxi.A.having beenB.beingC.isD.was60.I never dreamed of there such a quiet place in the noisy city.A.isB.areC.beingD.be答案与解析：1.8 【解析】考查固定短语和形容词词义

28、辨析。句意：面对挑战和挫折时，他仍然坚决，勇敢和坚定。A. faced with 面对，hesitant犹豫的；B. facing 面对，resolute坚决的；C. in face of 面对，indecisive 优柔寡断的；D. facing with面对，determined坚定的。结合选项可知，when引导的状语从句完整 形式为： when he is faced with/ when he is facing/ when he is in face of 可以省略其中的 he i4 第二 个空应使用与brave和firm词义相近的词语resolute或determined,但是D项

29、的facing with是错误 的。故选Bo1.9 【解析】考查状语从句的省略。句意：他乐于助人，别人向他求助时，即使有过这种情况，他 也是很少拒绝的。A. if never如果从未发生过，指如果某件事没有发生过；B. if ever, ever表示频率，与上文的seldom对应，表示 如果曾经发生过”，属于为了避免重复省略了与上文相同的部分； C. if not如果不是，不然的话，指如果没有某件东西；D. if any即使有（也），如果有的话，表示即使有某件东西。结合语境，此处表达他很少拒绝别人，即使有过的话”，指的是即使有过拒绝别人这件事”，本题完整的表达为 “if he ever ref

30、uses them故选'B。3 .D【解析】考查常见的省略结构的辨析。 一对接下来的假期，你有什么特别的计划吗？ 一是的， 如果可能的话，我将去拜访一些城市中的养老院。 A. If ever要是有的话；B. If busy如果忙的话； C. If anything如果有什么（区别）的话；D. If possible如果可能的话。根据下文提到的计划是拜访 养老院，可知，应该是如果可能的话。故选 Do4 .B【解析】考查省略和过去分词。句意：一些专家认为，学生一旦沉迷于电脑游戏，很可能会失 去进步的机会。固定词组：be addicted to对上上瘾，沉迷于此处是连词once工旦”引导的条

31、 件状语从句的省略，且相同的主语和be动词可以省略，所以这里是过去分词作状语，addicted已经演变成了形容词，故选Bo5 .D【解析】考查省略和过去分词。句意：丹尼尔答应保守这个秘密，所以即使问他也不会告诉任 何人。此处是even though引导的让步状语从句，从句主语和主句主语都是he,和ask之间是被动关系，相同的主语和be动词可以省略，所以这里是过去分词作状语，且ask sb. to do sth可以省略与前面相同的部分，只留下动词不定式符号to。故选Do6 .B【解析】考查状语从何的省略。句意：尽管小女孩被同学们忽略了（尽管同学们玩的时候没有 带小女孩），但她没有哭，也没有陷于绝

32、望之中。在 though引导的让步状语从句中，当从旬主语和 主句主语一致，且含有 be 的某种形式时，可省略从句的主语和be， 本句的完整形式为：Though shewas left out by her classmates 本旬相当于省略了 she was, 故 B 项正确。7 .A【解析】考查陈述句和固定短语。句意：当得知他被一所重点大学录取时，他哭了起来。此处 when引导的时间状语从句，故空格处是主句，且无需连词，所以排除D项；when引导的从何省略了主语，因此主从句主语一致，故排除 B 项； 从句是一般过去时态，则从句也用一般过去时态，所以排除C项；固定短语：burst into

33、tears放声大哭”。故选A。8 .A【解析】考查状语从何的省略。句意：如果不及时治疗，有些健康问题可能会在以后变成更大的问题。 在状语从句中，如果从句的主语和主句的主语一致且从句的谓语含有be 动词的某种形式（ am/ is / are / was /were ） ，可同时省略从句的主语和be 动词的某种形式。例如when， while 引导的时间状语从句以及if， unless， once 引导的条件状语从句等。例句： When （ it is） heated to 100 ,water will turn into vapor. 水加热到100 摄氏度就会变成蒸汽。If （ it is）

34、 properly treated, waste willdo no harm to the environment. 如果废物妥善处理，就不会对环境有危害。本题是if 引导的条件状语从句的省略，完整的句子为：There are some health problems that, if they are not treated in time, canbecome bigger ones later or©合以上分析，故选 A。9c【解析】考查状语从何的省略和动词的用法。句意：当我们走进办公室时，我们发现Winifred坐在一张桌子旁。主从句主语一致，状语从何主语省略，seated

35、表示 坐”的状态，,所以不能用seating, 故选C。10.B【解析】考查状语从何的省略。句意：一般来说，按照说明书服用，这种药没有副作用。本旬 为状语从何的省略。完整的说法应是 when the drug is taken according to the directions。由于主 句的主语和从句的主语相同，且从句中的谓语动词含有be的某种形式，因此可以省略从何的主语the drug和is。故选B项。可以去的，但是我不得不为即将到来的考试做准备。A. would like to想要，愿意；B. oughtto应该；C. would have本来可以；D. may have可能。根据下文

36、 我不得不为即将到来的考试做准备”可知， 我没有去看，空格处是省略句式，表示“(如果可以)我本来可以去”，与过去事实相反，谓语动词用 would have gone.，承前省略.gone.，故选C。12 .C【解析】考查动词词义辨析和状语从何的省略。句意：当他全神贯注地工作时，他总是忘记吃 饭和睡觉。absorb意为 使全神贯注”，常用句型sb. be absorbed in s仇.意为 某人全神贯注于”。trap意为 使陷入困境”。根据语境，该处指他全神贯注于工作，因此，需要选择用absorb的某种形式。when引导时间状语从句，该从旬补充完整为：when he is deeply abso

37、rbed in work根据主从何主语一致，且从句中有be的时候，可以省略从句主语和be”的原则，该从何省略为when deeply absorbed 故选 C。13 .D【解析】考查省略旬。旬意：比较这两个国家时，我们发现它们有许多共同之处。在when, while, if, as if, though(或 although), as, until, once, whether, unless, wher筹连词连接的状语从句中，常省略 跟主句相同的主语和 be动词。从句完整为 When we are comparing the two countries省略主语与be 动词，故选D。14 .

38、C【解析】考查句子结构分析。句意：圣路易斯曾经是美国第24大城市，现在已成为第4大城市。根据逗号后面的now可知，圣路易斯过去是美国的第 24大城市。B选项是何子，逗号后面是 句子，两句之间缺少连词，排除 Bo A选项时态和句法均不对，排除 A。C选项：曾经是美国第 24 大城市，意思正确。D 选项意思不对。故选C。15 .C【解析】考查状语从何的省略。句意：这个男孩虽然在农村长大，但很快就适应了这个大城市 的生活方式。分析句子可知，本句为状语从句的省略，其完整形式为：though the boy was brought up ,因主句和从句主语相同，且从句动词为be 动词，所以主语和be 一

39、同省略。故选C 项。16 .D【解析】考查状语从何的省略。句意：虽然他被告诉要停下来，但是他继续工作。根据句意 被 告诉”应过去分词，所以选 Do told前省略了 he wa*故选D项。17 .B【解析】考查省略旬。旬意：当被问及他对教学工作的看法时，菲利普说他觉得很有趣，也很 有收获。在when连接的状语从句中，常省略跟主句相同的主语和be动词。从句完整为When (he was) asked for his views about his teaching job 故选 B。18.C【解析】考查状语从句的省略和固定短语。句意：当被问及来自遥远的希腊的雕像是如何出现在中国时，研究人员解释说

40、，毫无疑问，这是亚历山大大帝影响的结果。句子主语researcher前ask之间为逻辑上的被动关系，应用过去分词的省略形式，相当于 when researchers were asked ； 短语no doubt意思为：毫无疑问；no wonder意思为：难怪，毫不奇怪。no doubt毫无疑问”符合句 意。故选C 项。19.B【解析】考查省略句和现在分词作宾补。句意：你的手机电池在通话过程中耗尽，让你自言自 语的时候你是什么感受？ leave sb. doing sth.使某人处于做某事的状态"，宾语you提前做主语，因 此用被动语态。所以句中when引导时间状语从句的完整形式是

41、when you are left talking to yourself, 从句的主语与主句的主语一致，且有be动词，因此省略从句的主语和be动词you are,构成when left talking to yourself。故选 B。20.B【解析】考查非谓语动词和省略。句意：从山顶上看，整个城市看起来更美。分析句子可知， 本句为状语从何的省略旬， 还原后为：When the whole city is seen from the top of the hill因从何的主 语与主句的主语相同，且从句的动词为be动词，所以主语和谓语可以省略。故 B选项正确。21.A【解析】考查省略句。旬意：

42、我又矮又瘦，但是我跑得很快，我希望他们能接受我现在的样子。as作为连词，连接句子，句子和前面一致，可以省略，本旬完整的句子应为I hope they will accept me as I am short and thin 故选 A 022.C【解析】考查省略句。句意：出去吃饭总是有趣。但是如果没有被仔细计划，它也可能破坏我 们的地球。当状语从句的主语和主句的主语一致，且状语从句中有be动词的时候，可以把状语从句的主语和be动词一起省略。本题在if后面省略了 it is。故C正确。23.B【解析】考查省略句。句意：一边开车一边打电话是很危险的。主句为 it做形式主语，句型it be+ adj

43、.+(for sb.) to do sth.,省H&了 for you ；从何为while引导的省略句，省略了主语和谓语动词， 完整为 while (you are) talking on the phona 故选 B。24.B【解析】考查让步状语从何的省略。句意：尽管当时缺钱，但我还是设法为女儿买了钢琴。although 引导的让步状语从句进行了省略，完整的形式是：although I was lacking money at that time。 lack 用作动词，表示 缺乏”，一般为及物动词，直接接宾语 money。故选B。25.B【解析】考查省略旬。句意：一个优秀的面试官能够

44、很快判断出你是否做了功课去了解公司， 因止匕定要确保你做了准备。 这JL“make sure you have!""make sure you have done your homeworkabout the company 的省略。故选 B。26 .C【解析】考查状语从句的省略旬。句意：实验表明，适量的锻炼，如果被定期进行，能提高人 们的健康。当主从句的主语一致的情况，可以省略从句的主语和be动词，If carried out=if properamounts of exercise are carried out 选 C。27 .B【解析】考查短语词义辨析。句意：这里的

45、气候非常好，夏天的温度很少达到 30度。if not要 不；if ever如果曾经有，很少；if any如果真有的话；if so假如这样的话。这里意思是 夏天的温度 很少达到30度 ”。故选B。28 .C【解析】考查非谓语动词和省略。句意：他补充说，如果有足够的时间，我肯定会做得更好。” 此处give的逻辑主语与主句的一致是I,且give与I之间是被动关系，从省略了主语与 be动词， 只有given。故选C项。29 .A【解析】考查状语的省略。句意：除非被邀请发言，这里的大多数高中生都喜欢在课堂上保持 沉默。当时间/条件/让步状语从句的主语与主句的主语一致或从句主语是it,从何谓语动词有be动

46、词时，可以省略从句的主语和 be动词。此处是Unless引导的条件状语从何的省略，完整句子为 Unless (they are) invited to speak, most high school students here prefer remaining silent in class处不 存在 “正在被邀请”。故选A。30 .C【解析】考查状语从何的省略。句意：虽然没有钱，但他的父母还是设法送他上了大学。在时 问、条件、方式和让步状语从句中，当主、从句的主语一致，且从句中有be动词时，则可以同时省略从句中的主语和be动词。分析本句可知，lack的逻辑主语，就是句子的主语 his par

47、ents,他们 之间存在着主动关系，所以C. Though lacking 符合此结构。故选C 项。31 .D【解析】考查状语从何的省略。句意：我不知道你为什么不照吩咐去做。这是你第三次这样做 了。本旬实际上是as引导的方式状语从何的省略，完整形式为：as you are told tq相当于省略了you are (从旬主语和主句主语一致且含有be的某种形式，可省略从句主语和 be),故D项正确。32 .C【解析】考查状语从何的省略。句意：人们相信，如果不认真处理，情况会变得更糟。分析句 子结构可知此处需要提到一个条件，if not表示 如果不”，if only表示 要是就好了”，在 if引导

48、的条件状语从句中，当从旬主语和主句主语一致且含有be的某种形式时，可省略从句的主语和be， 完整形式为：if it(the situation) is not carefully dealt with ， 本句相当于省略了it(the situation)is,根据“the situation will get worse可知此处表'示 要是不”而不是 要是就好了 "，故C项正确。33 .A【解析】考查状语从何的省略。句意：如果没有被小心处理，小小的船很容易就会翻掉。当状语从句从句的主语和主句的主语一致的时候，可以把状语从句从句的主语和系动词一起省略。根据句意，本题为if引导

49、的条件状语从句。if的后面省略了 they are原句为if they are not managed carefully。 故选A。34 .D【解析】考查状语从句中的省略。句意：如果电子游戏落入一个错误的人手中就能够产生一个 不良影响。如果把电子游戏交给坏人，它的影响可能很差。when, while, if, as if, although / though, as,until, once, whether, unless, wher野引导的从句中，如果其谓语为be,而主语与主句的主语相同时， 则从句的主语和be可省略；有时从句的主语为it时，也可省略it或从句中的有关成分。2. than,

50、 as, no matter what /who等后面成分的省略。故选 D项。35 .A【解析】考查非谓语动词。句意：不管贝多芬的作品被演奏多少次，他始终吸引着全世界的人 们。这是no matter how引导的让步状语从何，在让步、时间、条件状语从句中，如果主从句中主 语一致，从句中谓语含 be动词，可以将从句中的主语和 be省略。perform和逻辑主语the works of Beethoven 是被动关系，即在 how 后力口 the works of Beethoven are performed 止匕处省略了 the works of Beethoven ara 故选 A。36 .

51、B【解析】考查状语从何的省略。句意：恐惧是潜藏在我们身上的敌人之一，如果不控制，它会毁掉我们的生活。分析句子结构可知，此处考查状语从句的省略，其完整句子为if it is leftuncontrolled （状语从句中主从旬主语一致，且从句有be时，可省略从句的主语和 be）,旬中it指代fear和leave之间是动宾关系，故用被动语态，故选 B项。37 .B【解析】考查省略旬。句意：雷锋是一个随时准备着帮助他人的人，即使曾经有过，他也很少 拒绝向他求助的人。A. if never 如果曾经没有；B. if ever 如果曾经有；C. if not 如果不是；D. if any如果有。结合句意

52、可知此处用“如果曾经有的话，一般很少拒绝他们”符合语境，故选B 项。38 .D【解析】考查连接词辨析。句意：听起来像是发动机有问题，如果是这样的话，我们最好马上 去修理厂。A. Otherwise否则；B. If not如果不；C. But forthat要不是；D. If so如果是这样的话。 根据语境，故选D。39 .A【解析】本题考查省略句。解题步骤：1.确定句式：这句话完整的是If weather does not permit, we' ll not go on a hike in the mountain.处是该句的省略式句型；2.确定答案：省略重复的部分，乘U 下if n

53、ot, not。句意：如果天气允许，我们去山里远足。但是如果天气不允许，我们就不去。故选 A。40 .D【解析】考查非谓语动词。句意：苗圃是种植植物以供出售或种植在其他地方的地方。本空与 上文to be sold or构成并列非谓语结构，省略相同部分 to be,省下planted,故选D。41 .B【解析】考查省略旬。旬意：含羞草，高 15厘米，是一种敏感的小植物，一接触就会闭合。 在 when, while, if, as if, though(或 although), as, until, once, whether, unless, wher等连词连接的状语 从旬中，常省略跟主句相同的

54、主语和 be动词。本句完整应为 when (it is) touched。故选B。42 .A【解析】考查if的省略句。句意：如果曾经有的话，我们的导师也很少对我们的朗读作评论。 根据句意可知，前面有rarely,后面用if ever,表示如果曾经有的话也很少。故选 A项。43 .D【解析】考查省略旬。句意：下列的文章和对话关注的是中国和西方社会的文化差异，如果忽 略的话会造成误解。分析句子可知，此处考查if的省略句，其完整形式是if they are ignored,省略主语it和系动词is。故选D项。44 .A【解析】考查状语从何的省略。句意：建成后，图书馆将于明年向公众开放。在 when引

55、导的 时间状语从句中，当从旬主语和主句主语一致且含有 be的某种形式时，可省略从句的主语和 be, library与complete之间是被动关系，本句的完整形式为 When it is completed ,相当于省略了 it is , 故 A 项正确。45 .B【解析】考查动词辨析和状语从何的省略旬。句意：考试的时候，不要作弊。A. calm使平静；B. cheat作弊；C. list列清单；D. ignore忽略。分析句子可知，本句为状语从何的省略旬，原旬应 该是while you are taking an exam， 省略了 you are， 当从句的主语和主句的主语一致, 从句谓语

56、中包含be动词，在此种情况下可以省去从何的主语和be动词.保留be之后的部分，被保留部分常为现在分词、过去分词、不定式、形容词等,由 “ Don ，t in the exam ” 可知，考试不要作弊，祈使句用动词原形。故选B。46 .C【解析】考查if条件状语从何的省略。句意：如果被给予更多时间，我们能做得更好。原旬 是if we are given more time,当从句的主语和主句的主语一致，从何谓语中包含be动词，在此种情 况下可以省去从何的主语和 be动词.保留be之后的部分，被保留部分常为现在分词、过去分词、 不定式、形容词等,故选C。47 .B【解析】考查省略旬。句意：如果漆成

57、绿色，门看起来会更漂亮。状语从句中，若从旬的主语 与主句的主语一致，谓语是 be动词的某种形式时，可省去从句中生语+be”部分。从句中主语为door与paint构成被动关系，省略了主语与 be动词后只剩下过去分词painted。故选B。48.C【解析】考查状语从何的省略。句意：妈妈告诉男孩即使有人和他说话也不要和陌生人说话。 在if引导的条件状语从句中，如果主从何主语一致，且含有be的某种形式时，可省略从句中的主语和be,本句中相当于省略了 he was,完整部分应该是 even if he was spoken to故C项正确。49.D【解析】考查if的省略句。句意：如果你被抓住在课堂睡觉，你就打扫教室一个星期作为惩罚。当状语从句的主语与主句的主语一致时,可以省略状语从句的主语和系动词be， if 后面省略了you are, 完整的句子是：if you are caught sleepin