2018年高考英语一轮复习每日一题(第14周)as与which引导的定语从句

1、精品as与which引导的定语从句高考频度： 难易程度：典例在线I. The number of smokers, is reported, has dropped by 17 percent in just one year.A. itB.whichC.whatD.as【答案】D【解析】分析句子结构可知，空处引导非限制性定语从句，指代的是整个主句的含义，故可 排除A、C两项。as引导非限制性定语从句时，表示"如同，正如"，符合题干意思，故选 D项。2. It is a truly delightful place,looks the same as it must hav

2、e done 100 yearsago with its winding streets and pretty cottages.A. asB. whereC. thatD. which【答案】D【解析】分祈句子结构可松此旬是一个非限制ft走语从句，先行词是pbce,在定语从句中是作壬语的- 所次用关系代词引导。血引导非限定性定语从印寸要放在句首，故排除”选用wtaidL.句意；这貢是一个令 人愉快的地方，这里的顿胞的4備和美丽的小村庄一定和1叩年前看起来是一模一样的。故选口as与which弓I导非限制性定语从句的比较一、相同点两者引导非限制性定语从句时，可指代主句中的部分或整个句子的内容，在

3、从句中作主 语、宾语或表语，位于主句之后有时可互换。The meet ing was put off, as /which was exactly what we wan ted.会议被推迟了，这正是我们想要的。He was a doctor, as/which I knew from his manner.他是一名医生，我是从他的举止中知道的。二、不同点1. as可以放在主句前后，也可插入主句之中；而 which引导的非限制性定语从句只能位 于主句之后。As is kn ow n to all, fish can ' t live without water.众所周知，鱼离开水无法生

4、存。Air, as we kno w, is gas.正如我们所知，空气是气体。2. 在非限制性定语从句中， which后的be动词不可省；而as后的be动词可以省略。She told me she won the match, which was a lie.她告诉我们她赢得了比赛，这是一个谎言。The material is elastic, as （was） show n in the figure.这种材料是有弹性的，正如图中所示。3. which在非限制性定语从句中作主语时可用各类动词作谓语；而 as作主语时，谓语常 用系动词，如 be，seem， become等，一般不用其他行为动

5、词。He saw the girl, which delighted him.他看见了那个女孩，这让他很高兴。He did n' t say any thi ng at the meet ing, as/which seemed very stra nge.他在会议上一言未发，这看起来非常奇怪。4. as常用"正如"含义，常用的结构有as we know（众所周知）；as often happens（正如常发生的那样）；as is often the case（情况常常如此）；as we all can see（正如我们看至U的）；be announced / ex

6、pected / known / imagined / mentioned / said / shown/ reported等。这些结构常放句首，偶尔也可以放句中或句末。As is known to all, China is a developing country.众所周知，中国是一个发展中国家。Kate was late for school, as ofte n happe ned.凯特上学迟到了，正如常发生的那样。5. 在非限制性定语从句中，which可指代主句中的某一个单词，as不可以。My brother enjoyed play ing basketball, which he

7、 really plays well.我哥哥喜欢打篮球，他打得非常好。Beiji ng, which he was born in, is our capital.北京，他出生的地方，是我们的首都。6. "介词+关系代词（介宾代物）"中关系代词只能用which。The Travel Age ncy, with which our compa ny has bee n deali ng for several years,has ope ned for new bran ches.那家与我们交易了好几年的旅行社又开了新的分店。Air is a mixture of gases

8、, of which oxyge n forms 21 perce nt.空气是一种气体的综合体，其中氧气占了21%。7. 从句中的谓语动词是否定形式时，常用which。He can write a letter in En glish, which I can not.他可以用英语写信，我不能。Metal will bear beati ng with a hammer, which a stone will not.金属能承受得住用锤子敲打，但是石头则不能。8. 非限制性定语从句中的关系代词代表前面主句中的宾语从句时，常用which。He said he had passed the ex

9、am, which was un true.他说他通过了考试，这是假的。J学霸推詞1. Dad, let ' s go white-water rafting!-可编辑-精品 Ok. But equip yourself first. It is not such an easy job it looks.A.asB.whichC.thatD.what2. is often the case, a small child will feel unhappy and cry a lot the firsttime he or she goes to kindergarten.A.As B

10、.WhichC.That D.What3. The beginning of the story is excellent, is the ending, leaves us much to think.A.as ； whichB.so ；thatC.as； thatD.such ； which4. A Bridge Too Far is a book written by Cornelius Ryan, was made into afilm in 1977.A.thatC.whatB. whichD.it5. It rained very hard yesterday, prevented

11、 me from going to the school.A.thatB.itC. asD.which参考答案- 可编辑 -精品1-A【解析】考查定语从柯。旬專一爸創 我们去白浪涯流吧。一 的，但是首先要鑒剖孔逵不 像看起来的那么容易。使用定语从句先行词® such an easy job,定语从旬鎂少表语，用as引导。 故选仏匕A【解析】考查定语从句匕句意:情况总是这样，一个小孩第一次上幼儿曄寸总会不高沃并会犬哭不止已 分析句子结构可规空处引导非陨制性定语从句指优整个主句，当从句位于句苜时，吃须使用35引导。3. A 【解析】考查定语从句。句意：这个故事的开头很好，正如结尾一样，留

12、给我们很多需要思考的东西。本句中前文"The begi nning of the story is excelle nt"为下文"isthe ending "的逻辑主语，用 as引导定语从句时，先行词可以是一个词，也可以是一句话。so和such无此用法。第二空为非限定性定语从句，先行词"The beg inningof the story "为下文定语从句的逻辑主语，指物，故关系词用which。选A。4. B【解析】考查非限制性定语从句。句意：遥远的桥是Cornelius Ryan 所写的一本书，在1977年被拍成了电影。which引导非限制性定语从句，并在从句中作主语。故选B项。【易错提醒】本题易误选 A项或者D项。that和which均可引导定语从句，但是 that不能引导非限制性定语从句，故可排除A项。由于空格前缺少连词，因此不能用it。