however的状语从句
however的状语从句however作为连词时,引导让步状语从句,意思是“不管怎么样”.
例：
however much he eats, he never gets fat.
不管他吃多少,他永远吃不胖.
in one’s own home one can acts however he wishes.
在自己家里一个人想干什么都行.
however作为连词时一般只能引导让步状语从句
让步状语从句让步状语从句，是指状语从句中的一种，其本身也是状语从句。一般翻译为“尽管……”或“即使……”，就是我们日常生活中用的“退一步说…”的感觉。
引导让步状语从句的连词主要有以下这些：
though，although，while，as; even if，even though; whether...or...; no matter+疑问词，疑问词-ever，regardless of+名词/名词短语/名词从句，despite，in spite of。
切记although，though 不可与but连用，但可以与still 和yet连用。
however的用法(一)用作连接副词，相当于no matter how，引导让步状语从句，意思是“不管怎样……”“无论如何……”，具体结构有以下两种：
1.however+形容词+主语+系动词，例：
however rich people are，they always seem anxious to take more money.
无论人们有多富裕，他们似乎总是渴望挣到更多的钱。
2.however+副词+主语+谓语，例：
however fast he runs，he can’t catch up with us. 无论他跑得多快也不能赶上我们。
(二)用作连词，引导让步状语从句，意思是“怎么样都行”。例：
in one’s own home one can acts however he wishes. 在自己家里一个人想干什么都行。
行下去。
如何区分定语从句、宾语从句和状语从句？（附习题）| 虫虫讲英语 2018-12-02 14:52 「虫虫讲英语」老少咸宜的英语学习号——有时候，语法换一种方式讲，就听懂了。 如何区分定语从句、宾语从句和状语从句，是学生最常问我的问题之一。今天，我们通过青铜、白银、黄金、王者四级难度的例句，一起研究下怎样一眼辨别英语3大从句。 01 概念 3大从句的区别均在于前面两个字：定语、宾语和状语： 知道了这几个概念，这三种从句就很好理解了： >> 定语从句：作定语的从句，做adj.修饰先行词；
在这里，dog “狗子” 是先行词，即“走在定语从句前面的名词”；定语从句 that shits a lot 其中的 that，指 代了前面的 dog，告诉我们这是一条怎样的狗子：拉很多的狗子。 >> 宾语从句：作宾语的从句，放在动词或介词后面； 第一句，宾语从句为普通的陈述句，放在 think 这个动作后面，由连接词 that 引导。 第二句，宾语从句已经改成陈述句语序，原来人讲的话则是一般疑问句Do you let it go “你丫放不放手” ？该从句放在 depend on 的介词 on 后面，一般疑问句由 whether/ if 引导。 >> 状语从句：作状语的从句，给主句增加信息量。 状语从句，是3大从句中比较好记的一种：有个完整的主句，从句是提供更多信息的，比如上述例句告诉我们他为什么养狗。只要熟悉九大状语从句的引导词（← 戳可查看），几乎一眼就能辨别出状语从句。 02 当堂练习 现在，我们一起看几个句子找找感觉。请判断下列句子是定语从句，宾语从句还是状语从句？ >> 青铜 1. If it is fine tomorrow, I will visit you. 2. I helped an old man who lost his way.
条件状从和让步状从练习 一．单选题 1._______ the forest park is far away, a lot of tourists visit it every year. A. As B. When C. Even though D. In case 2. The experiment shows that proper amounts of exercise, if ______ regularly, can improve our health. A. being carried out B. carrying out C. carried out D. to carry out 3. You will never gain success you are fully devoted to your work. A. when B. because C. after D. unless 4. It is hard for the Greek government to get over the present difficulties_________ it gets more financial support from the European Union. A. if B. unless C. because D. since 5. It was a nice meal, _______a little expensive. A. though B. whether C. as D. since 6. I don’t really like the author,_______ I have to admit his books are very exciting. A. although B. unless C. until D. once 7. I don't believe we've met before, _____ I must say you do look familiar. A. therefore B. although C. since D. unless 8. You can’t borrow books from the school library ______ you get your student card. A. unless B. if C. while D. as 9. I'll be out for some time. ______ anything important happens, call me up immediately. A. In case B. As if C. Even though D. Now that 10. One's life has value ____one brings value to the life of others. A. so that B. no matter how C. as long as D. except that 二．填空题 11. In the global economy, a new drug for cancer, ______ it is discovered, will create many economic possibilities around the world. 12. One can always manage to do more things, ____ full one’s schedule is in life. 13.________ great difficulties we are faced with, we’ll never give up. 14. ________ great the difficulties are, we’ll never give up. 15. ______ we have enough evidence, we can't win the case. 16. If _____ to look after luggage for someone else, inform the police at once. (ask) 17.____________ the weather is like tomorrow, I will set out for Hongkong. 18. Many of them turned a deaf ear to his advice ___________ they know it to be valuable. 19. Much ______ I admire David as a poet, I don’t like him as a man. 20. In time of serious accidents, ______ we know some basic things about first aid, we can save lives. 三．改错题 21、It won’t matter even he refuses. 22. Though the work was difficult, but we managed to finish it in time. 23. I’m not going to talk on the point any further, though it is neither important nor very interesting. 24. You will be late if you leave immediately. 25. Take an umbrella with you in case of it should rain.
学法导航 定语从句与其易混淆句型的辨析 安丘一中高二英语组李建文 众所周知，定语从句是高中英语学习中的一个语法重点，老师、同学们都对此予以重点关注。由此造成了这样一种现象：做题时，一遇到从句就往定语从句上想，尤其容易把一些形式上与定语从句相似的句型（主要是同位语从句、强调句、地点和时间状语从句）也当作定语从句来理解，结果产生错误。因此，从某个方面来说，解答定语从句题的关键是弄清它和易混淆句型之间的区别。 一、定语从句与同位语从句 定语从句和同位语从句都置于被修饰的名词或代词之后，形式上非常相似，尤其是由that引导时，最难区分。实际上，两者的根本区别在于句法功能不同，与先行词的关系不同。 1. 句法功能不同 定语从句相当于一个形容词，用来修饰、描述或限制其前面的名词、代词（称为先行词）或整个句子；同位语从句则相当于一个名词，是先行词所述内容的展开，即说明先行词的具体内容。 定语从句的引导词that在从句中一定充当句子成分；而同位语从句中的引导词that（被称为连接代词）在从句中只起连接作用，不充当任何句子成分。 定语从句的引导词在从句中作宾语或状语时，可以省略或被其他词代替；而同位语从句的引导词则一般不能省略，也不能被代替。 例1The news （that / which） we picked up from his informal conversation is true.我们从他的闲谈中听到的那个消息是真实的。 例2The news that Mr Li will teach us English next semester is true. 李先生下学期将教我们英语这个消息是真实的。 点评：例1的中that从句是定语从句，其作用相当于一个形容词，用来限定the news，that在从句中作宾语，可省略。例2中的that从句是同位语从句，其作用相当于一个名词，本身就是the news的内容，that不能省略。 2. 与先行词关系不同 定语从句所修饰、限定的先行词可以是名词或代词，当that省略时，定语从句本身是一个不完整的句子。而同位语从句通常与一些本身有具体内容可展开的名词连用，对这些名词进行补充说明或解释。常见的此类名词有：answer， belief， doubt， decision，explanation， fact， hope， idea， information， message， news， order， possibility，problem， promise， question， reason， story， suggestion， thought， truth等。同位语从句本身是一个完整的句子，常用that连接而不是用which 引导，that本身不充当句子成分，表示疑问意义的名词（如doubt， question等）后也可用whether， who， what 等疑问词引导。 例3The fact (that / which) she told me yesterday is very important.她昨天告诉我的事实非常重要。 例4The fact that she hasn’t known the result of the examination is clear.她还不知道考试成绩这个事实是显而易见的。 点评：例3中that / which引导的是定语从句，修饰fact，用以限定说明是哪个fact，
SDN让步状语从句 让步状语从句是状语从句中的一种，其本身也是状语从句。一般翻译为“尽管……”或“即使……”，就是我们日常生活中用的“退一步说……”的感觉。 引导让步状语从句的连词主要有以下这些：though,although,while,as; even if,even though; whether...or...; no matter+疑问词，疑问词-ever，regardless of+名词/名词短语/名词从句，despite，in spite of。切记although，though 不可与but连用，但可以与still和yet连用。 ⑴though,although表示“虽然，纵然”之意。 这两个连词意思大致相同，在一般情况下可以互换使用。在口语中，though较常使用，although比though 正式，二者都可与yet,still或never，the less连用，但不能与but连用。例如： My will remains firm though I must lower my physical sights. 尽管我得降低体育（锻炼）的目标，但我的意志是坚强的。 Though I believe it,yet I must consider. 尽管我相信这一点，但我还得考虑考虑。 Although/Though he was exhausted,(still) he kept on working. 虽然他已经精疲力竭了，但仍然继续工作。 Although/Though he is very old,(yet) he is quite strong. 他虽然年纪大了，身体还很健壮。 值得注意的是，although引导的让步状语从句位于主句之前的情况较多，though引导的让步状语从句可位于主句之前或主句之后。例如： She passed the examination though she had not studied very hard. 她虽然不用功学习，考试却及格了。 ⑵as,though表示“虽然……但是”，“纵使……”之意。 as引导的让步状语从句必须以部分倒装的形式出现，被倒装的部分可以是表语、状语或动词原形，though 也可用于这样的结构中，但although不可以这样用。例如： Object as you may,I’ll go.(=Though/Although you may object,I’ll go.) 纵使你反对，我也要去。 Hard as/ though he works,he makes little progress. (=Though he works hard,he makes little progress.） 尽管他学习很努力，但几乎没取得什么进步。 Child as/though he was,he knew what was the right thing to do.（=Though he was a child,he knew what was the right thing to do.） 虽然他是一个孩子，但他知道该做什么。 Fast as you read,you can’t finish the book so soon. 纵然你读得快，你也不能这么快读完这本书。 Lover of towns as I am ,I realize that I owe a debt to my early country life. 尽管我爱城市，但我知道，以往的乡村生活使我受益匪浅。 Small as atome are,they are made up of still samller units. 尽管原子很小，但它们由更小的单位构成。 ⑶even if,even though 表示“即使……”，“纵使……”之意，含有一种假设。 这两个复合连词的意思基本相同。它们常互换使用，但意义有细微差别。even if引导的让步从句含有强烈的假定性，可用来表示与事实相反的假设，但不能用来描述已经发生的事实。而even though引导让步状语从句时，是以从句的内容为先决条件的，即说话人肯定了从句的事实，表示已经发生了的事。例如： We’ll make a trip even if/though the weather is bad. 即使天气不好，我们也要作一次旅行。 Even if he is poor,she loves him. (=He may be poor,yet she loves him.）
where引导的定语从句和地点状语从句的区别是什么？ 最简单的办法是看where是否有指代先行词 应到定语从句还是状语从句的区别主要可以从以下三点来看： 一、where引导定语从句时, where是关系副词, 在从句中作地点状语, 其前面有表示地点的先行词, where引导的从句修饰先行词。例如: The bookshop where I bought this book is not far from here. This is the house where I lived two years ago. We will start at the point where we left off. 二、where引导状语从句时, where是从属连词, where引导的从句修饰主句的谓语动词, where前面没有表示地点的先行词。例如: Wuhan lies where the Changjiang River and the Han Jiang River meet. Make a mark where you have any doubts or questions. I found my books where I had left them. 有时, where引导的地点状语从句兼有抽象条件含义, 可放在主句的前面, 而where引导的定语从句则不能。例如: Where there is a will, there is a way. 〔谚语〕有志者事竟成。 Where there is water, there is life. 有水的地方就有生命。 三、在有些情况下, where引导的定语从句可转换为where引导的地点状语从句。例如: A tall building was put up at the place where there used to be a desert. （＝A tall building was put up where there used to be a desert. ）在以前曾是沙漠的地方盖起了一幢高楼。 Bam boo grows best in places where it is warm and where it rains often. （＝Bamboo grows best where it is warm and where it rains often. ）温暖而多雨的地方最适合于竹子生长。
状语从句练习 ( ) 1. I won't believe you___ I have seen it with my own eyes. A. before B. until C. after D. when ( )2.He ___ home ___ she was satisfied ___ his answer yesterday. A.didn't go; until; with B.wasn't go; after; to C. doesn't go; before; with D. didn't go; until; to ( )3. He ___ back until the work ___ done. A. isn't; will be B. isn't; is C. won't be; will be D. won't be; is ( ) 4. They didn't start the work ___ their teacher came back. A. until B. while C. as soon as D. if ( )5. Tom will call me as soon as he ___ Shanghai. A. arrives B. will reach C.arrives in D.get to ( )6. I'm sure he'll come to see me before he ___ Beijing. A. will leave B. is leaving C. leave D. leaves ( )7. Tom has got a watch. He ___ it for two years. It _______ by his father. A. has bought; was bought B. has got; is bought , C. was bought; has bought . D. has had; was bought "' ( )8. When he got to the station, the train ___. A. left B. had left C. leaves D. has left ( ) 9. The boy told his father what he ___ in the street. A. saw B. have seen C. had seen D. see ( ) 10. We ___ TV when the telephone ____. A.watched; was ringing B. were watching; rang C. watch; rings D. are watching; rang ( ) 11. I ___ you for a long time. Where ___ you ___? A. didn't see; did; go B. didn't see; have; gone C. haven't seen; have; been D. haven't seen; have; gone ( ) 12. Tom___ China for 3 years. A. has been B. has been in C. has been to D. has been at ( ) 13. -Hello! May I speak to Bob? -Sorry, but he ___ for a month. A. had been away B. was left C. left D. has been away
Section ⅡGrammar 时间、条件和让步状语从句 时间、条件和让步状语从句在高考中约占3分，考查形式主要有单选、完型填空、语篇填空和改错，主要考察这三种从句中的引导词、谓语动词。 幻灯片3 一、时间状语从句 1．no sooner...than与hardly...when 都表示主句与从句的动作相继发生，意为“一……就……，刚刚……就”，主句动词用过去完成时。如no sooner，hardly位于句首时，主句用倒装形式。 He had hardly gone to bed when the doorbell rang. ＝Hardly had he gone to bed when the doorbell rang. 他刚睡下门铃就响了。 No sooner had he got off the train than his daughter ran towards him. 他刚下火车，他女儿就向他跑了过来。 幻灯片4 2．as soon as，the moment，immediately 引导的从句表示从句动作一发生，主句动作随即发生，常译为“一……就”。名词词组the second，the minute，the moment，every time，any time，next time，the first/last time，the day/week/month等亦可作连词，引导时间状语从句。 They told me about it as soon as/immediately/the moment they got the message.他们一听到口信就把消息告诉了我。 Every time he walked by the lake，he thought of his childhood life.每当他走过那个湖时，就会想起童年的生活。 注意：immediately可用做连词也可用做副词。 幻灯片5 3．till和until 词义是“直到……，一直……为止”，表示一个动作持续到某一时刻或某一动作发生为止，在句首只能用until。在肯定句中，主句中要用延续性动词；在否定句中，可以用非延续性动词。 She stood there till/until he had passed out of sight. 她站在那里看着，直到望不见他的身影。 Until they had finished the work，they did not go home. ＝Not until they had finished the work did they go home. 直到工作完成了他们才回家。 幻灯片6 注意：(1)在not...until结构中not until位于句首时主句部分倒装。在强调句中，强调until引导时间状语时，常把not提前，构成It isn’t/wasn’t until...that...。(2)not...until和not...before意思相同，表示“直到……才，在……以前不”。 幻灯片7
六种常见的让步状语从句例析 英语中的让步状语从句多种多样。本文将对其作一归纳和分析。 1.由although 或though 引导的让步状语从句。这两个词都不能同时与but连用，但可以与yet 连用。Though 引导让步状语从句时，可将从句中的表语提到though的前面。例如： Although he is young, he knows a great deal. 尽管他很年轻，但他懂得很多。 Smart though he is, he doesn’t study hard.尽管他很聪明，但他学习不下功夫。 2.由as 引导的让步状语从句。这种让步状语从句通常以以下几种形式出现： 1）名词/形容词/过去分词+as+主语+/be/其它动词。前置的表语为名词时，其前往往不带冠词。例如： Impressive as the record is, it fades next to the story of Armstrong’s struggle against diseases.尽管这项记录给人的印象深刻，但不如阿姆斯 特朗同疾病作斗争的故事令人瞩目。 Well paid as he was, he often ended up in financial trouble.尽管他工资很高，但经常入不敷出。 Teenager as he is, he knows a great deal. 尽管他是个十几岁的孩子，他知道的东西却很多。 Hero as he is, he has shortcomings. 尽管他是个英雄人物，但他也
有缺点。 2)副词+as+主语+谓语+其他成分。例如： Much as I like this book, I will let you read it first.尽管我非常喜欢这本书，但我还是想让你先读一读。 注：若从句中没有副词，可以将谓语部分中的主动词提到as前面，再在主语后面加may/might/can/could/will/would等情态动词或助动词do/did/does等。例如： Try as he might, Tom couldn't get out of the difficulty.尽管汤姆很努力，但他仍不能摆脱困境。 Search as I would everywhere , I could find no sign of him.尽管到处寻找，我也不能发现他的一点行踪。 3.由even though 或even if 引导的让步状语从句。例如： Even if we should fail ten times, we wouldn’t lose heart.即使我们失败十次，我们也不会灰心丧气。 Even though you don’t come, I will call you up at night.即使你不来，我晚上也会给你打电话。 4.由whether ….or引导的让步状语从句。例如： Whether you are boys or girls, you must obey the rules of the school. 不论你们是男生还是女生，你们都必须遵守学校的规章制度。Whether you go there by sea or by air, you will enjoy your trip. 不论乘船还是乘飞机去那儿，你的旅途都会愉快的。 5.由while 引导的让步状语从句。例如：
定语从句与其易混淆句型的辨析 众所周知，定语从句是高中英语学习中的一个语法重点，老师、同学们都对此予以重点关注。由此造成了这样一种现象：做题时，一遇到从句就往定语从句上想，尤其容易把一些形式上与定语从句相似的句型（主要是同位语从句、强调句、地点和时间状语从句）也当作定语从句来理解，结果产生错误。因此，从某个方面来说，解答定语从句题的关键是弄清它和易混淆句型之间的区别。 一、定语从句与同位语从句 定语从句和同位语从句都置于被修饰的名词或代词之后，形式上非常相似，尤其是由that引导时，最难区分。实际上，两者的根本区别在于句法功能不同，与先行词的关系不同。 1. 句法功能不同 定语从句相当于一个形容词，用来修饰、描述或限制其前面的名词、代词（称为先行词）或整个句子；同位语从句则相当于一个名词，是先行词所述内容的展开，即说明先行词的具体内容。 定语从句的引导词that在从句中一定充当句子成分；而同位语从句中的引导词that（被称为连接代词）在从句中只起连接作用，不充当任何句子成分。 定语从句的引导词在从句中作宾语或状语时，可以省略或被其他词代替；而同位语从句的引导词则一般不能省略，也不能被代替。 例1The news （that / which）we picked up from his informal conversation is true.我们从他的闲谈中听到的那个消息是真实的。 例2The news that Mr Li will teach us English next semester is true. 李先生下学期将教我们英语这个消息是真实的。 点评：例1的中that从句是定语从句，其作用相当于一个形容词，用来限定the news，that在从句中作宾语，可省略。例2中的that从句是同位语从句，其作用相当于一个名词，本身就是the news的内容，that不能省略。 2. 与先行词关系不同 定语从句所修饰、限定的先行词可以是名词或代词，当that省略时，定语从句本身是一个不完整的句子。而同位语从句通常与一些本身有具体内容可展开的名词连用，对这些名词进行补充说明或解释。常见的此类名词有：answer，belief，doubt，decision，explanation，fact，hope，idea，information，message，news，order，possibility，problem，promise，question，reason，story，suggestion，thought，truth等。同位语从句本身是一个完整的句子，常用that连接而不是用which 引导，that本身不充当句子成分，表示疑问意义的名词（如doubt，question等）后也可用whether，who，what等疑问词引导。 例3The fact (that / which) she told me yesterday is very important.她昨天告诉我的事实非常重要。 例4The fact that she hasn’t known the result of the examination is clear.她还不知道考试成绩这个事实是显而易见的。
一、从句是如何出题的 1. 时态 2. 考连接词 3. 考语言顺序 二、学好从句的两个基本条件 1. 时态 2. 从句的三个必须:①必须是句子；②必须有连接词；③必须是陈述句 三、状语从句、宾语从句、定语从句重点 1.如何判断何种从句 2. 从句的时态 3. 从句的连接词与扩展 4. 经典单选、从句与选词、长句子分析 四、如何判断三种从句 1. 状语从句无先行词 2. 宾语(表语)从句无先行词有动词或词组 3. 定语从句先行词多为名词或代词 一、When引导的定语从句与时间状语从句的区分 1. when的译法不同。在时间状语中，when 翻译成“当……的时候”I want to be a teacher when I grow up. 当我长大的时候，我要做一名老师。在定语从句中，when不翻译。I won't forget the day when he says he loves me. 我不会忘记他说爱我的那一天。 2. 在时间状语中，when从句前面或后面是句子；定语从句中，when从句不能位于句首，且通常when前为表示时间的名词day、year等。 3. when在从句的作用不同。在时间状语从句中，when是连词，只起连接主句和从句的作用，不做从句的任何成分。不过when引导的时间状语从句修饰主句的谓语，做主句的时间状语。 在定语从句中，when是关系副词，在从句中代替先行词做从句的时间状语，修饰从句的谓语。 例1 I will always remember the days when I lived with my grandparents in the country. 例2 I always remember the days in the country when I see the photo of my grandparents. 点评：例1意为“我会永远记得跟我祖父母一起住在乡下的那些日子”，其中when 引导的是一个定语从句, 修饰the days, when在从句中作时间状语。例2意为“当我看到祖父母的照片时，总是会想起在
阶段测试一 1、She tried hard ___________ she failed. 2、Be quick, _________he’ll be angry. 3、You may _________ do it yourself _______ leave it to me. 4、He could read English ________Japanese well. 5、He didn’t know anything about that ________ he couldn’t tell you. 6、________ you ________ he was here yesterday. They were at the cinema. 7、You can _______eat it at home ________ in the open air. Either is OK. 8、Use your head, _______ you’ll have a way. 9、She’s _______ our teacher _______ our friend. 10、Write to me soon, _______I’ll know a lot about you. 单项选择 1. I asked him _________dog it was. A. whose B. which C. who's D. where 2. They go to concerts of modem music_________ they really like it. A. because B. if C. though D. after 3. Find out_________ they are going this evening and ask_________ may join them. A. whether, that B. where, whether
条件状语从句Adverbial Clauses of Conditions (1) if, unless（除非if not...） eg. ________ we have enough evidence, we can’t win the case. ________ I was in charge, I would do things differently. (2) only if 只有，只要 eg. We will go only if it clears up./ Only if it clears up, __________________ Only if we work together_____________________只有一起努力，我们才能成功。 区分：only if Vs. if only _______________________________________ eg. If only I were a superman. /If only I could fly./If only I had taken his advice yesterday. (3) on condition that 条件是，前提是 eg. You can go out on condition that you wear an overcoat. He spoke to the reporters on condition that he was not identified. (4) as long as/so long as 只有，只要 eg. You may use the room as long as you clean it up afterwards. We can get there early so long as the children will cooperate. (5) in case 假使，万一 eg. In case we fail, we won't lose heart. We won’t lose heart in case of failure. (6) providing/provided (that) ; suppose/supposing(that) 倘若，假使 eg. We'll visit Europe next year, provided that we have the money. Suppose/Supposing (that) I don’t have a day off, what shall we do? 让步状语从句Adverbial Clauses of Concession 2)Two heart attacks in a year. It hasn't stopped him smoking,__________. 3)Good ___________ he is, he will never be the top of his class. (adj.) 4)Hard ___________ he works, he makes little progress.（adv.） 5)Child___________ he is, he knows a lot. (n.是[C]单数时, a/an删去) 6)Try ___________ he might, he couldn't find a job. (v.原形) 7)_________________ I'm willing to help, I don't have much time available. (5) even if/though 即使 eg. She won’t attend such parties even though/if she is invited. We won’t be discouraged even if /though we fail ten times. (6) whether…or 无论……还是 eg. __________ the weather is good or bad, they will set off as they planned. __________ he drives or takes the train, he will be here on time. (7) Whatever, whenever…=no matter what/when… 状从 eg. Whatever/No matter what you say, I won’t believe you. ________从句 Whatever she did was right. ________从句
如何区分状语从句和定语从句 以下句子中的when a bomb exploded near the Stock Exchange作何种成分？纵观国内出版的语法书，一般都认为是时间状语从句，它跟last night一样，都是时间状语。但感觉又不像，请问您怎么看？ Ten people were killed and several were injured last night when a bomb exploded near the Stock Exchange. 昨天晚上一颗炸弹在股票交易所附近爆炸，造成十人死亡，数人受伤。 【问题】when a bomb exploded near the Stock Exchange. 到底是时间状语从句，还是定语从句？ 【答】以下是我的详细分析，并给出理由。 last night与when a bomb exploded near the Stock Exchange 到底存在着什么关系？ 它们之间可能存在的3种关系： 1. 并列关系（如果是并列关系，那么when 就是状语从句，跟last night 共同修饰谓语动词） 2. 同位关系（如果是同位关系，那么when 就是名词性从句，不是状语从句） 3. 修饰关系（如果是修饰关系，那么when 就是定语从句，修饰限定last night） 下面我从这3种关系入手，进行深度分析，最后判断它们是不是先行词和定语从句的关系。 1. 并列关系? 如果是并列关系，那么，last night 和when 之间应该有或者可以加上and, or 等连词连接，以“A and B”或“A or B” 的结构出现，例如： He stayed at home yesterday and today. 他昨天和今天都呆在家里。 It won't make much difference whether you go today or tomorrow. 你今天或明天去没有多大关系。
重点、难点 1. 含有if引导的条件状语从句的复合句中主从句的时态。 2. If引导的宾语从句与条件状语从句的区别。 考情分析 通常在单项选择、完形填空或补全、完成句子等题型中考查，分值约3—4分。 知能提升 （一）知识讲解 【认知讲解】 I. if引导的宾语从句 if 引导宾语从句时，意思为：是否，从句的时态通常要和主句保持一致。 【例句】 I want to know if he lives there. 我想知道他是否住在那儿。 He asked me if I could help him. 他问我是否能帮他。 【考查点】if、whether引导的宾语从句的区别 1. if或whether引导宾语从句时，作“是否”讲，常放在动词ask、see、say、know和find out等后面。一般情况下，两者常可换用，在口语中多用if。 【例句】 Nobody knows whether / if it will rain tomorrow. 没有人知道明天是否下雨。 Lucy asked whether / if they had a cotton sweater. 露西问他们是否有棉制的毛衣。 2. if或whether引导宾语从句时，要注意三个方面，即连词、语序和时态。 if或whether既不能和that 或其他连词（副词）同时使用，也不能省略。 【例句】 我不知道他今天是否会来。 [误] I don’t know that if(whether) he will come here today. [正] I don’t know if(whether) he will come here today. 他走过来看看猫是否出了毛病。 [误] He came to see what if (whether) there was anything wrong with his cat . [正] He came to see if (whether) there was anything wrong with his cat . if或whether引导宾语从句时，虽具有疑问的意义，但其从句应用陈述句的语序。 【例句】 Did you know the way to the hospital The old woman asked me. The old woman asked me if / whether I knew the way to the hospital. 老妇人问我是否知道去医院的路。 if或whether引导的宾语从句应和主句的时态保持一致。即主句为一般现在时，从句用任一种时态；主句为一般过去时，从句则用过去时中的任一种时态。 【例句】 I don’t know if (whether) he has come here. 我不知道他是否来过这儿。