as与which的区别
外教一对一https://www.360docs.net/doc/f013440082.html,
as与which的区别
a、位置不同
as可放在主句后，主句前或主句中间;which只能放在主句后。
b、as起连接作用，表达说话人的观点、看法，并指出主句内容的根据或出处，意为“正如，正像”。
Which相当于并列句，可以用and this来代替，意为“这一点，这件事’”。
注意：as常用于下列结构：as we know/ as is known to all, as we all can see, as has been said before/above, as might be excepted, as is often the case, 一般不能用which代替as。
c、在从句中作主语时，which既可作系动词be的主语也可作实义动词的主语，而as只可作系动词be的主语。
3、but用作关系代词，相当于who/that…not
例：In China there is no one but knows Lei Feng.
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as与which引导定语从句的用法辨析
as与which引导定语从句的用法辨析 一、as和which都能引导的定语从句 当非限定性定语从句置于句末时，as和which都可用来引导这个定语从句。但含义有区别。 1、 Dorothy was always speaking highly of her role in the play, _______ , of course, made the others unhappy. A. who B. which C. this D. what 2、The number of senior high school students is increasing, _______ is mentioned above. A. that B. it C. such D. as 二、只能用which引导的定语从句 1. 在限定性定语从句中。例如： The project _______ a British businessman has invested in is under construction at present. A. which B. as C. what D. why 2. “介词+关系代词”引导定语从句时，只能用which。例如： Recently I bought an ancient Chinese vase, _______ was very reasonable. A. which price B. the price of which C. its price D. the price of whose 3. 当后置的非限定性定语从句是否定结构时，只能用which引导。例如： The result of the experiment was very good, _______ we hadn't expected. A. when B. that C. which D. what 三、只能用as引导的非限定性定语从句 1. 置于句首时，非限定性定语从句只能用as引导。例如： _______ is known to everybody, the moon travels round the earth once every month. A. It B. As C. That D. What 2. 在the same...as 结构中，意思是“像……那样的”。例如：
最新定语从句中的that和which的区别
定语从句中的that和which的区别： that和which在从句里都可以做宾语和主语，做宾语时可以省略。在定语从句中,有种说法叫"关宾省",意思是关系代词在限制性定语从句中作宾语可以省略,不管是that，which，还是whom。但是which能引导非限制性定语从句，that则不行。 只能用that的几种情况： 1. 当先行词为all, much, little, none及由any, every, some, no所构成的复合不定代词时。We should do all that is useful to the people. Please tell me anything that you know about the matter. 2. 当先行词被any, few, little, no, all, much, some等词修饰时。 You can take any seat that is free. There is little work that is fit for you. 3. 当先行词为序数词或被序数词所修饰时。 When people talk about the cities of China, the first that comes to my mind is Beijing. This is the fourth film that has been shown in our school this term. 4. 当先行词为形容词最高级或被形容词最高级修饰时。 The best that I could do was to apologize. This is the most interesting story book that I have ever read. 5. 当先行词被the very, the only, the last, the just, the same等修饰时。 This is the very book that I’m looking for. The only thing that we could do was to wait. 注意：先行词被the same修饰时，关系代词也可用as。 I need the same book that / as you have. 6. 当先行词既包含人又包含物时。 They are talking of the heroines and their deeds that interest them. 7. 当先行词是疑问代词who，which，what或主句以这些词开头时。 Who that has ever worked together with him doesn’t admire him? Which is the star that is nearer to the earth？ 8. 当先行词为主句表语或关系代词为从句表语时。 That’s a good book that will help you a lot. Our school is no longer the place that it used to be. 9. 先行词为time时，当time表示次数，引导词用that, 可省略。当表示时间，可用that 或when引导，都可省略。 I do remember the first time(that) I had ever heard the sweetest voice in the world. I did't remember the exact time （when/that）I arrived in Shanghai last month. 只能使用which的情况: 1. 在“介词＋关系代词”结构中，关系代词必须用which。 The house in which we live is very large. This is the reference book（参考书）of which the teacher is speaking. 注意：如果介词不放在修饰事物的限定性定语从句的句首，which就可换为that。 This is the question which/that we’ve had so much discussion about. =This is the question about which we’ve had so much discussion. 2. 先行词为“those＋表事物的复数名词”时，关系代词通常只用which而不用that。 You should grasp well those skills which may be used in the future work.
which引导的定语从句
关于which引导从句的小结： 关系代词which 一般指物，在定语从句中作主语、宾语或定语，既可引导限制性定语从句，又可引导非限制性定语从句。 1. 引导限制性定语从句 A shop should keep a stock of those goods which sell best. [ stock存货] 商店应存有最畅销的货物。 This is the family which is planning to move to the city 这是要搬进城里的一家。 2. 引导非限制性定语从句。 （1 ）用来指代一个句子。 Internet is so interesting, which makes all possible happen. 因特网是如此有趣，它使任何事都有可能发生。 （2 ）用来指代句子的一部分。 When deep in thought, which he often was, he would forget all around him. 他常常陷入沉思，这时他就会忘掉周围的一切。 （3 ）如果要引导两个非限制性定语从句，第二个which 前要加and. He bought a book, which was written by LuXun, and which he decided to give to his friend. 他买了本鲁迅写的书，他决定送给朋友。
练习1. [1. board董事会 2. data资料,数据 3. shareholder 【英】股东 4. on behalf of代表 5. guard保护] The ability to guard customer data is the key to market value, which the board is responsible for on behalf of shareholders. which的先行词是谁？ 译文：保护客户资料的能力是市场价值的关键，董事会代表股东对市场价值负有责任。 【难点小结：1.介词短语 2.which 的先行词 3. 非限制性定语从句有时要翻译成一句话】 例2. 【1.semiconductor半导体 2. casualty伤亡，灭亡，覆灭 3.< A sit at the heart of B> A是B的核心】
定语从句中which和that用法
定语从句中which和that用法 在定语从句中，which 和that 在指代事物时，一般可以互换使用，但并非在任何情况下都是这样。 一、宜用that, 而不宜用which 的情况. ①先行词为不定代词all,much,something,everything,anything,nothing,none,the one 等 1. We should do all that is useful to the people. 2. There's nothing that can be said about it. 3. Do you mean the one that was bought yesterday ②先行词被only, any, few, little, no, just, very, one of等词修饰时。 1 .The only thing that we could do was to wait. 2 .That's the very word that is wrongly used. 3 .The last place (that) we visited was the chemical works. 4 .You can take any (=whichever) seat that is free. 5 .I hope the little that I can will be of some help to them. ③先行词是序数词时或被序数词修饰时。 1. When we talk about Wuxi, the first that comes into mind is Tai Lake. 2. This is the third film that has been shown in our school this term. ④先行词是最高级或被最高级修饰时。 1. This is the best that can be done now. 2. The most important thing that should be done right now is how to stop him from going on. ⑤先行词既有人又有物，用which和who都不适合，这时宜用that. 如： writer and his novel that you have just talked about is really well known . rider and his bike that had run over an old woman were held up by the police. ⑥被修饰词为数词时. 1. Yesterday I caught two fish and put them in a basin of water .Now you can see the two that are still alive .
定语从句中where和which的区别
定语从句中where和which的区别
定语从句中where和which的区别 1.This is the factory_________we visited yesterday. 2.This is the stable__________Jesus Chirst was born. 1,which 2.where 分析：关键是看从句中的动词。如果是及物动词（顾名思义，就是必须要接物做宾语的动词，或能用做被动的动词），则表明从句缺宾语，修饰人用who/whom/that。修饰物用that/which. 如动词是不及物（顾名思义就是不需要接物做宾语的或要接宾语时前面必须要加介词的，即用介宾的动词），则说明从句不缺宾语，可能是状语(或介宾）。表地点用where.时间用when. 如题1：从句的动词是visit，我们说参观某个地方说：visit some place。而不说visit in the place所以visit是及物动词。所以缺宾语，修饰物故用which. 如题2，我们说出生于某地用be born in，如：i was born in beijing 而不说i was born
beijing.故说明born 后不直接跟宾语，应用介宾，或关系副词（where/when)所以此处填in which 也是正确的。 所以在平时的练习中应注意动词的及物于不及物性1这是解决这类题的关键之一。扩展练习： 1.These are the days ____ I spent with my mom. (when） 2.These are the times _____ I experienced .（which） 英语定语从句that ,where ,which 的区别 例如：(1) I love places ____ the people are really fridendy A.that B.which C.where D.who (2) This is the place ____ I have ever visited there B.whom C.he D.which (3).This is the house ____ I want to buy A.In which B.that C.what D.that (4)this is the museum ____ we visited last year A.where B. in which C.which D.in that
定语从句中that 和which的用法
定语从句中的that和which的用法 引导定语从句的关系代词有：that（指人或物）,which （指物）,who (指人）.指人时可用that或who ；指物时可用that 或which 。 That和which在从句里都可以做宾语和主语，做宾语时可以省略。指物时，两者一般可以互换，但在下列情况下只能用that： 1）当先行词是all ,any ,anything ,everything ,nothing 或被它们修饰时.例如： Is there anything that I can do for you 有什么可以为你做的吗? All that can be done must be done . 凡是能做的都必须做. 2）当先行词被形容词的最高级或序数词修饰时.例如：That is one of the most interesting books that are sold in the bookshop . 那是这家书店出售的最有趣的书之一. The first thing that we should do is to get some food . 我们该做的第一件事是弄点吃的. 3）当先行词有：the only ,the very ,the same ,the last 等修饰时.例如：
My necklace is not the only thing that's missing . 我的项链不仅是丢掉的东西. 4）当主句以who或which开头时,定语从句中引导词用that ,不用which 或who .以避免重复.例如： Who is the girl that is wearing a red coat 正穿一件红色外套的女孩子是谁? 5）当先行词既有人又有物时,用that .例如： The writer and his novel that you have just talked about are really well known . 你刚才谈起的那位作家以及他的小说确实很著名. 请注意: 以下几种只能使用which的情况: 1.引导非限制性定语从句，用which。 2.在“介词＋关系代词”结构中，关系代词必须用which。 如：The house in which we live is very large. 我们住的房子非常大。 This is the reference book of which the teacher is speaking. 这就是老师正在谈及的那本参考书。 注意：如果介词不放在修饰事物的限定性定语从句的句首，which就可换为that，例如：This is the question which/that we've had so much discussion about. =This is the question about which we've had so much discussion.
as和which的用法区别
非限制性定语从句中的as和which ■as 和which的相同点 (1) as 和which都可引导非限制性定语从句，放在主句之后；在非限制性定语从句中充当从句的主语、宾语或表语。如： Tom has found a good job, as / which we all hope. 汤姆找到了一件好工作，这正是我们大家所希望的。 (2) as 和which都可代表整个句子的内容或主句中的某一成分。如： His mother is ill, which makes him very sad. 他母亲病了，这件事情使他很难过。 He has made great progress, as / which makes us very happy. 他进步了，这使得我们很高兴。 以上两句中的as / which都指前面整个句子的内容。 Though he has lots of money, he still rides his old bike, which was bought ten years ago. 尽管他很有钱，但是他还骑着他的旧单车，这单车是十年前买的。 There you can meet many writers as you have ever read in books. 在那里，你可见到你在书中所读过的很多作家。 ■as与which的区别 (1) 当先行词前面有so + adj. + a / such + (a) + adj. , the same等词修饰时，引导词只能用as，而不用which。如： She is so nice a girl as we all like. 她是个我们大家都喜欢的如此好的女孩。 It is such an interesting book as we all want to read. 它是本我们大家都想读的有趣的书。上面两句中的as就不能用which替换。 (2) as 在从句中常作宾语；作主语时，从句的谓语动词常为系动词，即：系表结构或被动结构。如： As is said above, he has conquered the difficulty. 正如上面所说，他征服了困难。
that与which的用法区别
that与which的用法区别 两者都可指物，常可互换。其区别主要在于： 1.引导非限制性定语从句时，通常要用which： The current, which is very rapid, makes the river dangerous. 水流湍急，使这条河很危险。 He has to work on Sundays, which he doesn’t like. 他得在星期天工作，他是不喜欢这样的。 The London team, which played so well last season, has done badly this season. 伦敦队上一个季度打得很好，这个季度却打得很差。 2.直接放在介词后作宾语时，通常要用which： She may be late, in which case we ought to wait for her. 她可能晚到，那样我们就要等等她。 The documents for which they were searching have been recovered. 他们找寻的文件已找到了。 This morning some port wine came, for which I have to thank you. 今天早上送来一些波尔图葡萄酒，为此我得向你道谢。 注：有时“介词+which”引导的定语从句可以转换成“介词+which+不定式”结构：He had only the long nights in which he could study. =He had only the long nights in which to study. 他只有漫漫长夜可用来学习。 He had a couple of revolvers with which he could defend himself.= He had a couple of revolvers with which to defend himself. 他只有一两把手枪用来自卫。 3.当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that： All that she lacked was training. 她缺的只是训练。 Have you everything that you need? 你需要的东西都有了吗? The sleeping man’s subconscious mind retained everything that was said around him. 这位酣睡的人头脑的下意识能记住他周围的人说的话。 She would never do anything that was not approved of by her parents. 她父母不赞同的事她绝不会做。 4.当先行词有the very, the only, the same 等修饰时，通常用that： This is the only example that I know. 我知道的例子只有这一个。 Those are the very words that he used. 那是他的原话。 5.当先行词有形容词最高级或序数词(包括last, next等)等修饰时，通常用that： This is the best dictionary that I’ve ever used. 这是我用过的最好的词典。 The first thing that you should do is to work out a plan. 你应该做的第一件事是订个计划。
which在定语从句中的用法
江苏朱姝 关系代词 which 一般指物，在定语从句中作主语、宾语或定语，既可引导限制性定语从句，又可引导非限制性定语从句。下面就进行归纳总结： 1. 引导限制性定语从句 A shop should keep a stock of those goods which sell best. 商店应存有最畅销的货物。 This is the family which is planning to move to the party. 这是要搬进城里的一家。 2. 引导非限制性定语从句。 （ 1 ）用来指代一个句子。 Internet is so interesting, which makes all possible happen. 因特网是如此有趣，它使任何事都有可能发生。 （ 2 ）用来指代句子的一部分。 When deep in thought, which he often was, he would forget all around him. 他常常陷入沉思，这时他就会忘掉周围的一切。 （ 3 ）如果要引导两个非限制性定语从句，第二个 which 前要加 and. He bought a book, which was written by LuXun, and which he decided to give to his friend. 他买了本鲁迅写的书，他决定送给朋友。 3. 名词＋ of ＋ which （＝ of which ＋名词＝ whose + 名词）通常放在先行词的后面。
I'd like a room the window of which looks out over the sea. / I'd like a room of which the window looks out over the sea. / I'd like a room whose window looks out over the sea. 我要一间窗户面临大海的房间。 4. 介词＋ which 的替代作用。 （ 1 ）作时间状语替代 when 。 There used to be a time at which / during which （ = when ） the Chinese people struggled for freedom. 中国人曾有一段为自由而斗争的日子。 （ 2 ）作地点状语替代 where 。 This is the office in which （ = where ） I used to work. 这是我过去工作过的办公室。 （ 3 ）作原因状语替代 why 。 I'd like you to explain the reason for which （＝ why ） you were absent. 我想让你解释一下缺席的原因。 （ 4 ）作方式状语替代 that 或省略。 There are many ways in which （＝ that / 省略） we can solve the problem. 解决这个问题有很多方法。 5. which, when, where 关系词的选择。 关系副词 when 与 where 用于引导定语从句时，往往修饰句中表示地点或时间的名词。但是，有时候在表示时间或地点的名词后面却不能用 when 或 where ，而该用 which 或 that 。 Is this the factory which / that produces all kinds of washing machines （ which / that 在定语从句中作主语，指代前面的 the factory ）这就是生产各种洗衣机的那家工厂吗
英语语法：定语从句中的that和which
英语语法：定语从句中的that和which 英语语法：定语从句中的that和which That which代表物，区别听我来叙述; 先行若是不定代，that就把which 踹; 当先行词为anything，everything，nothing，all，any，much，many，one等不定代词时，只能使用“that”,不用“which”。 例：Is there anything that I can do for you? 我能给你做点什么吗? 先行词前有两数，就用that定无误; 当先行词是基数词或序数词修饰时，只能使用“that”，不用“which”。 例句： That is the second time that I have been to Japan. 那是我去日本的第二次。 The two buildings that lay on the River Thames fell down last week. 坐落在泰晤士河岸边的那两座大楼上星期倒塌了。 先行词前最高级，还用that必无疑; 当先行词是形容词最高级或被形容词最高级修饰时，只能使用“that”,不用“which”。 例句：This is the most wonderful time that I have ever had. 这是我度过的最美好的时光。 句中若有there be, that应把which替; 例：There is no evidence that animals possess a mysterious sixth-sense allowing them to pre dict natural disasters. 说动物拥有神秘的第六感，可以预知自然灾害，这是没有根据的。 先行主中做表语，避免重复从句里; 例句：1)This is not the hospital that it used to be.
高中英语定语从句 --- As 和which 引导定语从句精讲精练
关系代词as和which 引导的定语从句 as和which引导非限制性定语从句，有相同之处也有不同之处。具体情况是：1. As和which都可以在定语从句中做主语或者宾语，代表前面整个句子。 He was honest, as/which we can see. as 引导非限制性定语从句，可放在主句之前，或者主句之后，甚至可以切割一个主句；which引导的非限制性定语从句只能放在主句之后。另外，as有“正如……，正像……”的意思 which 指代整个句子不可置于句首只能位于主句后。 1. They d idn’t come to school on time, which made the teacher angry. 2. The sports meeting was put off, which astonished (吃惊）us greatly. 3. His father died last year, which made it impossible for him to go to school. 4. He didn’t pass the exam, which disappointed his parents. as 引导定语从句，位置灵活，可位于句首、句中和句末。 As we all know, China is a developing country. The number of the visitors, as we had expected, was over 200. China is a great country with a long history, a s is known to all. 注意:当主句和从句存在逻辑上的因果关系时,主句与从句有因果或并列，从句谓语动词是“系动词+adj" 使用which Our class has won the volleyball match, which is inspiring. Tom suddenly fell ill, which made us sad. Tom突然病倒，这使得我们很伤心。Which引导的非限制性定语从句在从句中做主语，其代指整个主句，主从句的关系是因果关系，因为他的病，所以我们伤心。 The road was too slippery, which caused lots of accidents. 路太滑了，以至于引起了很多事故。which引导的非限制性定语从句在从句中做主语，其代指整个主句，主从句的关系是因果关系，因为路滑，所以出事。 (1) As is known to all, China is a developing country. (2) He is from the south, as we can see from his accent. (3) John, as you know, is a famous writer. (4) He has been to Paris more t han several times, which I don’t believe. (5) Tom was always late for school, which made his teacher angry.
which和that的区别
that与which两者都可指物，常可互换。其区别主要在于： 1. 引导非限制性定语从句时，通常要用which。如：She received an invitation from her boss, which came as a surprise. 她收到了老板的邀请，这是她意想不到的。 2. 直接放在介词后作宾语时，通常要用which。如：The tool with which he is working is called a hammer. 他干活用的那个工具叫做锤子。 3. much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that。如：There was little that the enemy could do but surrender. 敌人无法,只有投降了。All [Everything] that can be done must be done. 凡能that can be done must be done. 4. 当先行词有the very, the only, the same 等修饰时，通常用that。如：This is the only example that I know. 我知道的例子只有这一个。Those are the very words that he used. 那是他的原话。 5. 当先行词有形容词最高级或序数词(包括last, next等)等修饰时，通常用that。如：。如：This is the best dictionary that I’ve ever used. 这是我用过的最好的词典。The first thing that you should do is to work out a plan. 你应该做的第一件事是订个计划。 6. 当关系代词在定语从句中用作表语时，通常用that。如：China is not the country (that) it was. 中国已不是过去的中国了。 7. 当先行词是一个既指人又指物的并列词组时，通常用that。如：They talked about the persons and things that most impressed them. 他们谈论了使他们印象最深的人和事。他们谈论了使他们印象最深的人和事。 8. 当要避免重复时。如：Which is the course that we are to take? 我们选哪门课程？
(完整版)as和which引导非限制性定语从句的区别
As与which引导非限定性定语从句辨析 1.as引导非限制性定语从句，只代表主语或主句的一部分所表达的意思(不能指代某个名词或代词)，可以放在主句前，后或中间，在从句中作主语或宾语、例如： As is known to all, he is the best student in our class. (as指代整个句子，作主语，置于句首) He opposed the idea, as could be expected. (as 指代整个句子，作主语，置于句末) As we all know, he studies very hard. (as 指代整个句子，作宾语，置于句首) Taiwan is, as you know, an inseparable part of China. (as指代整个句子，作宾语，置于句中) 2.在非限制性定语从句中，which和as引导定语从句时的区别： a. which引导的从句不能放在主句前，而as引导的从句则既可以放在主句前，也可以放在主句后。例如： As (正确) is often the case, he is absent. Which (错误) He saw the girl, as (正确) He had hoped. Which （正确） b.用能做关系代词，as和which都可以指代一个句子，但as有“正如”、“就像”之意，which则没有此含义。 He is a foreigner, as I know from his accent. (as指代一个句子，意为“正如”、“就像”) He has to work on Sunday, which he doesn’t like. (which指代一个句子，没有“正如”、“就像”) c.当从句的谓语动词是be或相当于联系动词的seem, become等时，可用as或which作主语。但当从句的谓语是行为动词时，只能用which作主语。例如： He married her, as (正确) was / seemed natural. Which （正确） He saw the girl, as (错误) delighted him. Which （正确
定语从句中 which,that 的用法与区别
定语从句中 which,that 的用法与区别 只能使用that的情况： 1.当先行词是nothing, something, anything, all, each等不定代词时。 e.g. Do you have anything that is important to tell me? 2.当先行词被all, any, some, no, not, every, each等修饰时。 e.g. I have some books that are very good. 3.当先行词被形容词最高级、序数词(包括last, next等)所修饰时。 e.g. This is the first book that I bought mysel f. The biggest bird that I caught is this bird. 4.主句是以which或who开头的特殊疑问句时 e.g. Which is the bike that you lost? 为了避免重复时用that Who is the woman that was praised at the meeting. 5.当先行词在从句和主句中都作表语时,无论先行词是人还是物. China is no longer the country that she was. 6.如有两个定语从句,其中一个已用which引导,另一个宜用that . Edison built up a factory which produced things that had never been seen before. 7.在there be句型中,只用that. He asked for the latest book (that) there is on the subject. 8.当先行词被the very, the last, the next, the only，the same 等词修饰时。 e.g. This is the very book that I lost yesterday. 9.当先行词又有人又有物时。 e.g. I won’t forget the things and the persons that I saw. 10. 先行词被all, every, no, any, little, some, much等修饰时。 I’ve read all the books that are not mine. 只能使用which的情况。 1、非限制性定语从句(即通常用逗号与主句隔开，如果去掉逗号，整个句子仍能表达完整的意义的定语从句)中。 e.g. Mary has a book, which is very precious. 2、在介词之后。 e.g. This is a house in which lives an old man. 3、当主句中的主语被that修饰时。 e.g. That dog which I found in the street belongs to Mary. 4. 非限定性定语从句修饰的是前面的整个句子，而且关系代词和关系副词前面有逗号, 用which开始的定语从句修饰前面半句 e.g. He will wear no clothes, which will distinguish（区分，辨别）him from his fellow men.
定语从句which
定语从句which 历年高考真题----定语从句which讲解，分为6部分；可作为专项练习用。 (1985)4. In fact the Swede did not understand the three questions__________ were asked in French. (A)where (B)who (C)in which (D)which 答案解析：从句部分缺主语，排除A,D； 从句代指的先行词为the three question, 所以排除B. (2004京春)23. Luckily, we’d brought a road map without __________ we would have lost our way. A. it B. that C. this D. which 答案解析：从句部分缺状语，排除A,C; 从句是介词+which的类型, 所以排除B. (2013山东) 31. Finally he reached a lonely island __________ was completely cut off from the outside world. A. when B. where C. which D. whom 答案解析：从句部分缺主语，排除A,B,D.
(2003北京）24．York, ___________last year, is a nice old city. A．that I visited B．which I visited C．where I visited D．in which I visited 答案解析：非限制性定语从句，排除A; 从句中，缺个宾语，排除C,D (2005湖北) 29．Her sister has become a lawyer, __________she wanted to be. A．who B．that C．what D．which 答案解析：从句部分缺表语，排除C; 从句为非限制性定语从句，排除B； 从句代指的先行词为a lawyer(此处为职业), 所以排除A. (1990）24.He paid the boy $ 10 for washing ten windows ,most of__________ hadn't been cleaned for at least a year. A.these B.those C.that D.which 答案解析：从句为非限制性定语从句，排除A,B,C； (1991）24. She heard a terrible noise, __________brought her heart into her mouth. A.it B.which C.this D.that 答案解析：从句为非限制性定语从句，排除A,C,D； (2005沪春）40.The United States is made up of fifty states, one of __________ is separated from the others by the Pacific Ocean. A. them B.those C. which D.whose 答案解析：从句为非限制性定语从句，排除A,B； 从句部分的主语one of (宾语fifty states)，排除D(whose作定语)，如whose book;