专题十一并列连词和状语从句
1.[2016四川,70]It was time for her to have a new baby, it was also time for the young panda to be independent.
2.[2016天津,7]the average age of the population increases, there are more and more old people to care for.
3.[2015四川,6]There is only one more day to go your favorite music group play live.
4.[2015北京,32]the damage is done, it will take many years for the farmland to recover.
5.[2015福建,31]the students came from different countries, they got along quite well in the summer camp.
6.[2015安徽,34]he once felt like giving up, he now has the determination to push further and keep on going.
7.[2014江苏,21]Lessons can be learned to face the future,history cannot be changed.
8.[2013湖南,23]You must learn to consult your feelings and your reason you reach any decision.
9.[2013安徽,23]It’s much easier to make friends you have similar interests.
10.[2013江西,28]She says that she’ll have to close the shop business improves.
11.[2013重庆,23]It’s not easy to change habits, with awareness and self-control, it is possible.
12.[2013新课标全国Ⅱ,3]I was glad to meet Jenny again,I didn’t want to spend all day with her.
13.[2013四川,7]He is so busy. He cannot afford enough time with his son even he wants to.
14.[2013山东,26]Mark needs to learn Chinese his company is opening a branch in Beijing.
15.[2017丙卷(全国Ⅲ)改错]I have grown not only physically, and also mentally in the past few years.
16.[2016乙卷(全国Ⅰ)改错]Though not very big, but the restaurant is popular in our area.
17.[2016乙卷(全国Ⅰ)改错]Every day he makes sure that fresh vegetables or high quality oil are used for cooking.
答案
1.and根据语境可知此处应用and连接两个并列分句。
2.As句意:随着人口平均年龄的增加,越来越多的老年人需要照顾。分析句子结构可知,空处在此引导状语从句,表示"随着"。
3.before句意:在你最喜欢的乐队现场演出之前仅有一天的时间了。根据句意可知,空格处用before引导时间状语从句。
4.Once句意:一旦损害造成,农田恢复将需要很多年的时间。once意思是"一旦"。
5.While/Though/Although句意:虽然学生们来自不同的国家,但他们在夏令营中相处得很好。此处用While/Though/Although引导让步状语从句,表示"虽然,尽管"。
6.Where根据前后句的语境可知,此处应用where引导地点状语从句。句意:在他曾经想要放弃的地方,他现在有着更进一步、不断向前的决心。
7.though/although从句意可知, 尽管历史不可改变,但是却可以从中学到教训。
8.before句意:做任何决定之前你必须学会顾及自己的情感和理智。此处用before引导时间状语从句。
9.when句意:当你们有相似的兴趣时,你们更容易成为朋友。when表示时间,有时也表示条件。
10.unless句意:她说她将不得不关掉商店,除非生意好转。根据句意可知填unless。
11.but句意:改变习惯不容易,但是只要有意识和自制力,这就是可能的。由句意可知,此处表示转折关系,故用but。
12.but/yet句意:我很高兴再次见到Jenny,但是我不想整天和她在一起。前后两分句之间为
转折关系,空处填but或yet均可。
13.though/if句意:他很忙。即使他想陪他的儿子也没有足够的时间。even if/though引导让
步状语从句。分析句意及句子间的逻辑关系可知填though/if。
14.since/for/because句意:Mark需要学汉语,因为他的公司要在北京开一个分公司。根据句
意可知,此处应填since/for/because"因为"。
15.and→but考查连词。not only...but also...是固定搭配。
16.去掉but从属连词Though(虽然)不可与并列连词but(但是)一起使用,故去掉but。
17.or→and根据语境可知,此处不是表示选择关系,而是表示"新鲜的蔬菜和优质的油",故把
or改为and。
状语从句归纳总结：（as用法） 一、时间状语从句： 1、连接词when、while、as ⑴when ①正当…时候be about to …ving… ②从句动词先于或后于主语动作 ⑵while: 可表示对比（从句只用连续性动词） ⑶as: “一边一边”“随着” 省略句中: eg: As time goes on…随着时间的推移 As a boy,hewao hopeless at English. 2、before,after before常用句型:It is/was/will be…before eg: It will be 5 years before we meet again. 3、till，until ①用于肯定句中“直到…为止”，主句谓语为持续性动词 ②用于否定句中“直到…才”，主句谓语为短暂性动词（until,till可用before代替） ③Not until位于句首倒装 ④强调句型只用until 二、地点状语从句:where,wherever,everywhere 也可引导定语从句： 状语从句：We shall go where the condition are poor. 定语从句：We shall go the place where the condition are poor. 三、原因状语从句 1、because\since\as ⑴①用why提问 ②强调句中 ③关联词“not…but” ④与“just”等副词连用eg:You shouldn’t any only because you had much. ⑵since引导从句常放句首，往往表示对方已知的让步原因关系，主从时态一般相同 ⑶as从句放句首 2、now(that) 既然 3、considering that,seeing (that):与since,now that意相近: “鉴于…”“考虑到…” 4、not that…,but that…“不是因为…而是因为…” 四、目的状语从句 1、that,so that,in order that“为了，以便” ⑴从句中往往出现情态动词：can\could\may\might ⑵当主从句的主语一致时，可转换为相应动词不定式结构：so as to\in order to 2、in case,for fear that,lest“以防、以免、万一..”从句是肯定句 五、结果状语从句 1、so,that,so that
第12讲并列句和状语从句两个或两个以上的简单句用并列连词连在一起构成的句子叫做并列句，其基本结构是“简单句+并列连词+简单句”。并列连词有:and, but, or, so等。状语从句是在句子中起副词作用的句子。根据状语从句在句中不同的作用可分为：时间、地点、原因、目的、结果、条件、方式、让步和比较状语从句。并列连词和从属连词是高考的重要考点之一，在语法填空中通常以无提示词的方式进行考查，在短文改错中主要考查并列连词和从属连词的误用。并列句和状语从句的考点如下： 核心考点01考查并列连词 并列连词是用来连接两个或多个并列的词、短语或句子的词,主要表示并列、选择、转折、因果等关系。并列连词在句子中位置比较固定,必须位于所连接的并列单位之间;两个并列连词不能并用。 1.表示并列关系的连词 表示并列关系的连词有and,both...and...,not only...but also...,neither...nor...等。 2.表示选择关系的连词 表示选择关系的连词有or,either...or...等。 3.表示转折关系的连词 表示转折关系的连词有but,yet,while等。 4.表示因果关系的连词 表示因果关系的连词有for，so。 We listened eagerly, for he brought news of our families. 5.when作并列连词的用法
when除了作从属连词,引导时间状语从句外,还可作并列连词,其意义为“这时,那时”,相当于and at this/that time。常用于下列句式: ①sb.was doing sth.when... ②sb.was about to/going to do sth.when... ③sb.was on the point of doing sth.when... ④sb.had just done sth.when...。如: We were having a meeting when someone broke in. 我们正在开会,这时有人闯了进来。 6.while作并列连词的用法 while除了作从属连词,引导时间状语从句外,也可作并列连词,意为“而,却”,表示对比。如: He likes pop music, while I am fond of folk music. 他喜欢流行音乐,而我喜欢民间音乐。 I like playing the piano while my sister likes playing the violin. 我喜欢弹钢琴，而我妹妹喜欢拉小提琴。 典例分析1 (2017北京卷)—Peter, please send us postcards_________ we’ll know where you have visited. —No problem. 【解析】句意:——彼得, 请给我们邮寄明信片, 这样我们就能知道你参观过哪些地方。——没问题。根据句意可知，第一句中前后两个分句为因果关系, 所以填so。 【答案】so 典例分析2 He is a shy man, _________he is not afraid of anything or anyone. 【解析】句意:他是一个腼腆的人,但是他不惧怕任何人和任何事。根据前后句意可知,这里需要一个表示转折关系的连词。 【答案】but 典例分析3 You have to move out of the way_________ the truck cannot get past you. 【解析】句意:你得让让路,不然卡车过不去。根据句子结构和句意可知,空格处应该用or,表示一个否定的条件,意为“不然的话”。 【答案】or
高考英语中的“并列平行结构”及应试策略 根据对最近十多年高考英语试题的分析和总结，平行结构在高考命题中占有重要的地位。下面对高考英语命题中的相关题型及应试策略做具体的列举和讲解。 一、平行结构：由并列连词连接两个或两个以上对等的语言成分构成。 二.并列连词及词组：连接多个平行的词、短语、分句或者从句。 常见的有：and/并且， as well as还有，同时 but但是， or 或，both…and两个都，neither…nor既不…也不…, either…or，或者…或者not only…but(also)不但…而且，not…but不是…而是等。 对连接词连接的成分要求：形式对称；功能相同（充当同样的句子成分）。 并列平行结构应该是名词和名词，副词和副词，分词和分词，不定式和不定式，动词和动词，句子和句子等的并列，而不能其中一个概念用分词结构表达，而另一个概念用不定式或从句来表达。 比如下面两个句子就违反了平行结构的准则： Do some nice things for your parents that they don't expect like cooking, doing the dishes, washing clothes, or clean the floors. "做饭"、"刷碗"、"洗衣服"、"拖地"在本句中应为并列结构作为介词like“像”的宾语，故应用相同的形式，都用动名词，所以应将clean改为cleaning。 三、平行结构主要类型 1. 名词和名词平行结构 The patient's symptoms were fever, dizziness, and headache. 病人的症状是发烧、头晕和头痛。 2. 形容词和形容词平行结构 Early to bed and early to rise makes a man healthy, wealthy and wise. 早睡早起使人健康、富有、聪明。 3.副词和副词平行结构 The work is handsomely and skillfully有技术地 done. 这项工作做得漂亮，有水平。 4. 分词平行结构(现在分词与现在分词 / 过去分词与过去分词 ) The boys were running, shouting and laughing.
第12讲并列句和状语从句两个或两个以上的简单句用连在一起构成的句子叫做并列句，其基本结构是“+并列连词+简单句”。并列连词有:and, but, or, so等。状语从句是在句子中起副词作用的句子。根据状语从句在句中不同的作用可分为：时间、地点、原因、目的、结果、条件、方式、让步和比较状语从句。并列连词和从属连词是高考的重要考点之一，在语法填空中通常以无提示词的方式进行考查，在短文改错中主要考查并列连词和从属连词的误用。并列句和状语从句的考点如下： 核心考点01考查并列连词 并列连词是用来连接两个或多个并列的词、短语或句子的词,主要表示并列、选择、转折、因果等关系。并列连词在句子中位置比较固定,必须位于所连接的并列单位之间;两个并列连词不能并用。 1.表示并列关系的连词 表示并列关系的连词有and, both...and...,not only...but also...,neither...nor...等。 2.表示选择关系的连词 表示选择关系的连词有or, either...or...等。 3.表示转折关系的连词 表示转折关系的连词有but, yet, while等。 4.表示因果关系的连词 表示因果关系的连词有for，so。 We listened eagerly, for he brought news of our families. 作并列连词的用法
when除了作从属连词,引导时间状语从句外,还可作并列连词,其意义为“这时,那时”,相当于and at this/that time。常用于下列句式: ①sb. was doing sth. when... ②sb. was about to/going to do sth. when... ③sb. was on the point of doing sth. when... ④sb. had just done sth. when...。如: We were having a meeting when someone broke in. 我们正在开会,这时有人闯了进来。 作并列连词的用法 while除了作从属连词,引导时间状语从句外,也可作并列连词,意为“而, 却”,表示对比。如: He likes pop music, while I am fond of folk music. 他喜欢流行音乐, 而我喜欢民间音乐。 I like playing the piano while my sister likes playing the violin. 我喜欢弹钢琴，而我妹妹喜欢拉小提琴。 典例分析1 (2017 北京卷)—Peter, please send us postcards_________ we’ll know where you have visited. —No problem. 【解析】句意:——彼得, 请给我们邮寄明信片, 这样我们就能知道你参观过哪些地方。——没问题。根据句意可知，第一句中前后两个分句为因果关系, 所以填so。 【答案】so 典例分析2 He is a shy man, _________he is not afraid of anything or anyone. 【解析】句意:他是一个腼腆的人,但是他不惧怕任何人和任何事。根据前后句意可知,这里需要一个表示转折关系的连词。 【答案】but 典例分析3 You have to move out of the way_________ the truck cannot get past you.? 【解析】句意:你得让让路,不然卡车过不去。根据句子结构和句意可知,空格处应该用or,表示一个否定的条件,意为“不然的话”。 【答案】or
状语从句连词总结 1 时间状语从句： when当……时候 while 当……时候（动词只能是延续性动词） as当……时候（经常表示一边……一边……） after/before在……之后/之前 until/till直到……（即某一持续性行为持续到某一时间点） since/ever since自从……（即子某一时间点以来，常用完成时态或完成进行时） 名词性短语the time the moment the minute the day the year the first/second time each time每次every time每次next time下次any time在任何时候whenever不管什么时候 by the time到……时候（即指到某一时间点为止，主句常用完成时态） 一……就……as soon as once immediately directly instantly 还没来得及……就……hardly……when no sooner……than as long as长达…… 非时间状语从句：动词ing形式；at……形式；on doing/on sth形式 2地点状语从句 where在哪里，在什么地方 wherever无论在哪里 anywhere无论何处everywhere 到处，处处nowhere 无处，任何地方都无 to/in/from the place（s）where或to/in/from any place where 3原因状语从句 because（语气最强）因为，多置于主句之后 as（语气最弱）因为，多置于主句之前 since语气较弱，常表示对方已知的事实，相当于“既然” now （that）既然 for the reason that因为（that引导的是同位语从句，先行词为reason） in that由于某种原因，多用于书面语 seeing that因为，鉴于 4目的状语从句 in order that以便 so （that）为了 for fear that惟恐，以防 in case以防万一有某种情况发生 5结果状语从句 so （that）所以 so……that……结构 such……that……结构
第12讲并列句和状语从句 两个或两个以上的简单句用并列连词连在一起构成的句子叫做并列句，其基本结构是“简单句+并列连词+简单句”。并列连词有:and, but, or, so等。状语从句是在句子中起副词作用的句子。根据状语从句在句中不同的作用可分为：时间、地点、原因、目的、结果、条件、方式、让步和比较状语从句。并列连词和从属连词是高考的重要考点之一，在语法填空中通常以无提示词的方式进行考查，在短文改错中主要考查并列连词和从属连词的误用。并列句和状语从句的考点如下： 核心考点01 考查并列连词 并列连词是用来连接两个或多个并列的词、短语或句子的词,主要表示并列、选择、转折、因果等关系。并列连词在句子中位置比较固定,必须位于所连接的并列单位之间;两个并列连词不能并用。 1.表示并列关系的连词 表示并列关系的连词有and, both...and...,not only...but also...,neither...nor...等。 2.表示选择关系的连词 表示选择关系的连词有or, either...or...等。 3.表示转折关系的连词 表示转折关系的连词有but, yet, while等。 4.表示因果关系的连词
表示因果关系的连词有for，so。 We listened eagerly, for he brought news of our families. 5.when作并列连词的用法 when除了作从属连词,引导时间状语从句外,还可作并列连词,其意义为“这时,那时”,相当于and at this/that time。常用于下列句式: ①sb. was doing sth. when... ②sb. was about to/going to do sth. when... ③sb. was on the point of doing sth. when... ④sb. had just done sth. when...。如: We were having a meeting when someone broke in. 我们正在开会,这时有人闯了进来。 6.while作并列连词的用法 while除了作从属连词,引导时间状语从句外,也可作并列连词,意为“而, 却”,表示对比。如: He likes pop music, while I am fond of folk music. 他喜欢流行音乐, 而我喜欢民间音乐。 I like playing the piano while my sister likes playing the violin.
状语从句连词意思总结：1.一旦 once 2.…的时候 the moment 3.一/ 刚…就… （三个表 达） as soon as, hardly…when…, no sooner…than 4.每当(三个表达) whenever, each / every time 5.直到… until 6.直到…才…not…until… 7.无论哪里 wherever 8.在…的地方 where 9.就是因为、仅仅是因为just / only because 10.是因为… (用强调句型 表示) It is / was because / because of… that… 11.不是因为…而是因为…not because…but because 12.既然(两个表达) since, now that 13.由于(三个表达) as, seeing / considering that 14.因为…的原因 for the reason that… 15.因为、由于…的事实 (三个表达) because of / due to / owing to the fact that… 16.如此…以致于… (两个 表达) so…that, such…that 17.因此(结果)、为了/ 以便(目的) (两个表 达) so that, that 18.为了/ 以便 in order that 19.以防(目的) 、万一(条 件) in case 20.以免，唯恐(两个表达) lest, for fear that 21.除非 unless 22.只要(两个表达) as / so long as 23.尽管、虽然(三个表达) though, although, even though 24.即使、纵然、就算、哪 怕 even if 25.as, though解释为“虽 然”的倒装结构 n. / adj. / adv. + as / though + S + V v. + as / though + S + 情态动 词 26.无论什么 whatever = no matter what 27.无论谁 whoever = no matter who 28.无论哪一个 whichever = no matter which 29.无论怎样 however = no matter how 30.无论…还是… whether…or… = no matter whether…or… 31.好像，仿佛(两个表达) as if, as though 32.与…一样… (两个同级 比较结构) as…as…, the same (height / size / age / width / depth) as 33.在…当中最… (最高程 度表达) the + -est + 比较范围 34.比任何其他的…要更 加…(最高程度表达) -er + than + any other + sing n., -er + than + any of the other + pl. n. 35.没什么与…一样…(最高 程度表达) 否定词+ as…as 36.没什么比…更加…(最高 程度表达) 否定词+ -er 37.没有/ 不如…那样… (两个较低程度比较) not as / so…as…, less + 原级 + than 38.在…当中最不… (最低 程度比较) the least + 原级+ 比较范 围 39.越来越… -er and –er, more and more + 原级 40.越…越… the + -er…the + -er 41.与…一样不… no + -er + than 42.…不比…更 not + -er + than 43.与其说…不如说… more…than… 44.超过；不仅仅；非常 more than 45.while做连词的三个意 思 当…；虽然，尽管(放句首)； 然而(引导并列句) 46.as做连词的六个意思 当…；一边…一边…；随着…； 由于；虽然(有特殊的倒装 结构)；如同，像
专题九并列连词和状语从句 题组1 限时模拟 1.[2020河南八市重点高中联考,42]Many women experience a time of sadness they give birth to a baby. 2.[2020广东佛山七校联考,49]Drink it, you will think quicker,move more swiftly and even see more clearly. 3.[2020四省八校质量检测,62]Is there any difference between "university" "college"? 4.[2020河南洛阳第一次联考,61]The boss will sample some of the delicacies(佳肴)that pop up in the office,either when staffers return from China when the goodies are cooked right here. 5.[2020广东佛山第一中学考试,47]I couldn’t enjoy my web browsing (浏览) on social media as usual, and keeping up with the latest news, I could spend more time with my housemates. 6.[2020吉林长春东北师大附中第一次摸底考试,51]Twelve weeks later, 6.5% of them stopped smoking actively in the high frequency group 3% got rid of smoking in the low frequency group. 7.[2020山东省实验中学高三阶段性检测,37]most kids were going to the movies on weekends, George preferred to design his own special projects. 8.[2020江苏南通第一次调研,24]New employees, they are skilled, will get more opportunities for personal development. 9.[2020天津和平区期末,20]With the College Entrance Exam-ination approaching, I feel more and more stressed. It will ruin my college dream I take action now as soon as possible. 10.[2019山西大学附属中学高三诊断,44]A few get lucky. for the rest, there’s nothing anyone can do to help. 11.[2019黑龙江哈尔滨三中第一次调研,69]Make the most of your strengths, you can be successful regardless of which type you fall into and how fast or slowly you walk. 12.[2019河北衡水中学二调,62]China’s industrial output is expected to rise by around 6.5 percent this year, marking the best performance since 2010, the Made in China 2025 strategy(战略) helps to raise productivity and revenue(税收). 13.[2019湖南长沙长郡中学检测,70]And away from the mysterious world, Colonel Sanders didn’t open his first KFC restaurant he was 62,while Fauja Singh ran his first marathon at 89. 14.[2019江苏南京高三零模,13]After 40 years of reform and opening-up, China still has a long way to go it becomes a "developed economy". 15.[2019浙江台州高三第一次模拟,40]When the servants brought the steak, he took out a fork and began to eat people did in Italy. 题组2 精选真题 1.[2018江苏,29]you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights. 2.[2018北京,2]we don’t stop climate change, many animals and plants in the world will be gone.
高考英语新连词知识点经典测试题含答案解析(1) 一、选择题 1．_____ you receive my e-mail informing you of my absence, expect me on Friday at about 6 p.m. A．Unless B．Until C．While D．Although 2．Tomorrow is Tom’s birthday. Have you got any idea ______ the party is to be held? A．what B．which C．that D．where 3．______the damage is done, it will take many years for the farmland to recover. A．Until B．Unless C．Once D．Although 4．The newcomer went to the library the other day and searched for he could find about Mark Twain. A．wherever B．however C．whatever D．whichever 5．Drivers should be careful near schools in particular, ________ there are likely to be many children. A．though B．but C．so D．because 6．_____ never easy, innovation is absolutely possible with adequate training and continuous practice. A．When B．As C．Since D．While 7．he has created striking stage settings for the Martha Graham dance company artist Isamu Noguchi is more famous for his sculpture. A．But not B．In spite of C．Nevertheless D．Although 8．---Was it under the tree _______ you were away talking to a friend? --- Sure. But when I get back there, the car was gone. A．that B．where C．which D．while 9．Our motherland is getting more and more powerful. This is we can get protection whenever we run into danger abroad. A．what B．because C．whether D．why 10．I have rarely had any chance to return to my hometown ______ I was sent to BeiJing ______ the project. A．since, in the charge of B．after, in the charge of C．since, in charge of D．after, in charge of 11．Jim is absent from the party. That is ________ he was badly injured in the football game. A．because B．why C．how D．when 12．- Have you known each other for long?
并列连词when 和引导时间状语从句的从属连词when 是不同的。这主要表现在以下几个方面： 1. 位置：when 引导时间状语从句时，该从句可放在主句之前也可放在主句之后；而并列连词when 只能位于两个分句之间，而且前面常常有逗号。例如： Come when you please. 你高兴来就来吧。（when 为从属连词） When I saw him，he was writing to a friend of his. 我看见他时，他在给一个朋友写信。（when 为从属连词） I was taking a walk，when I came across him. 我正在散步，突然碰见了他。 2. 意义：when 作从属连词用时，它所引导的从句表示主句中谓语动词动作发生的时间，即作“当……时”解；而并列连词when 连接的两个分句中，第一个分句表示的是背景，第二个分句表示的是一种突然的、意想不到的情况或过早发生的事情。when 通常含“这时突然”之义。例如： I was thinking of this，when I heard my name called. 我正想着这件事，突然听到有人叫我的名字。 I had just fallen asleep，when the boor-bell rang. 我刚入睡，门铃突然响了起来。 这种意义在孤立的句子中可以理解到，在文章中更能体会得到。如在“I was wandering through the street when I caught sight of a tailor's shop ”一句中，“在街头漫步”只是“看见有家缝纫店”的时间，其后作者怎样走进缝纫店，想要什么样的衣服，怎样受到伙计的奚落，又怎样受到老板的奉承等情景均与“漫步街头”没有直接的因果关系。 3. 时态：when 引导的时间状语从句中可以根据句意的需要用一般现在时、一般过去时、过去进行时、分别说明现在，过去，甚至将来的行为；并列连词when 后面的分句中通常用非延续性动词的一般过去时，其前表时间的分句中可用： （1 ）过去进行时表示过去某时间正在进行的动作。例如： I was cooking when I heard her knocking at the door. 我正在做饭，突然听到她敲门的声音。 He was thinking about the problem，when an apple fell to the ground. 他正在思考这个问题，突然有一只苹果掉到了地上。 （2 ）was /were going to，was / were about to，was / were on the point of 表示过去某一时间将要发生的动作。例如： I was just going when he came in. 我正要走，这时他就进来了。 We were about to start when it began to rain. 我们刚要动身天就开始下起雨来了。 He was on the point of leaving，when someone knocked at the door. 他刚要走就有人敲门。（ 3 ）过去完成时表示过早发生的事情。请看下述两种场合：（a ）过去完成时和含否定意义的hardly，scarcely，nearly 连用，和just，little 连用，或者与否定词not 连用时，表示“刚……，就……”的意思。例如： I had hardly opened the door when he hit me. 我刚一开门他就打了我一下。 I had nearly reached the town，when the young man suddenly said very slowly，“Do you speak English？”我快要进城了，年轻人突然慢慢地说：“你会讲英语吗？”
初中英语状语从句知识点总结（一） 用来修饰主句中的动词，形容词或副词等而充当状语的从句叫做状语从句。状语从句常用从属连词来引导，与主句连接起来。若置于句末，则前面不加逗号。根据意义和作用，状语从句可分为时间原因条件等几种。下面我们就来分析一下这几种状语从句。 1时间状语从句 时间状语从句常用从属连词when,after,until,as soon as,等来引导。 当主句是祈使句或谓语动词是一般将来时态或情态动词时，其时间状语从句中的谓语动词常用一般现在时态表示将来发生的动作或存在的状态。这就是我们常说的“主将从现”。 如：Please call me when you get there.当你到那时，请给我打个电话。 I will write to you as soon as I arrive in Beijing.我一到北京就给你写信。 <温馨提示>since引导时间状语从句表示“自从…以来”，从句中的动词一般表示动作的起点，用过去时;而主句的动作延续的情况则用一般现在时或现在完成时。常用的句型为： It has been/is+一段时间+since+过去时。 如：I has been/is three years since we met last time.自从我们上次见面，已经三年了。 2条件状语从句 引导条件状语从句的连词或词组有：if(如果),unless(除非),as long as(只要)等。如果主句是将来时，条件状语从句也用一般现在时来表示。 如：I will stay at home if it rains tomorrow.如果明天下雨，我就待在家。 You can’t learn English well unless you wo rk hard. 除非你努力学习，否则是学不好英语的。 <温馨提示>由if引导的条件状语从句，若从句表达的是与现在事实相反的事实，则常用虚拟语气，即用过去时态表示(如果涉及到be动词，一律都用were)。此时，主句则用过去将来时。
高三英语专项训练9并列句和状语从句 班级：____________ 姓名：______________ 1．________ online shopping has changed our life，not all of its effects have been positive. 2．________ the average age of the population increases，there are more and more old people to care for. 3．It was time for her to have a new baby，________ __it was also time for the young panda to be independent. 4．You probably know who Marie Curie was，________ you may not have heard of Rachel Carson. 5．The meaning of silence varies among cultural groups.Silences may be thoughtful，________ they may be empty when a person has nothing to say. 6．I learned that ________ you fall in love with something and do it all the time，you will get better at it. 7．However，Mexicans may use silence________instructions are given by a person in authority rather than be rude to that person by arguing with him or her. 8．For example，Let’s number the letters of the alphabet，in order，from 1 to 26.________ we substitute a number for each letter，the message “Meet me” would read “13 5 20 13 5.” 9．________you do，don’t be a bystander.Get involved. 10．He is a shy man, ________ he is not afraid of anything or anyone. 11．Some animals carry seeds from one place to another，________ plants can spread to new places. 12．Give me a chance，________ I’ll give you a wonderful surprise. 13．It is so cold that you can’t go outside ________ fully covered in thick clothes. 14．________ the job takes a significant amount of time, most students agree that the experience is worth it. 15．You won’t find paper cutting difficult ________ long as you keep practicing it. 16．________ the damage is done, it will take many years for the farmland to recover.
16 连词 连词分为并列连词和从属连词两大类。并列连词是连接主语与主语，谓语与谓语，句子与句子，分词与分词的词，它要求前后两部分有相同的形式和语法作用；而从属连词一般连接主句与从句，从句形式有名词性从句，定语从句和状语从句等。 （一）并列连词： 并列连词可用来连接词与词，词组与词组，分句与分句。常用的并列连词有：and （和），as well as（既…又），both … and（不但…而且），not only … but also（不但…而且），not … but（不是…而是），neither … nor（既不…也不），either … or（不是…就是），or（或者），but （但是），yet（然而），for（因为），so（所以），while（而），when （这时）等。如：Both my brother and my sister are teachers./ His room is bright but mine is gloomy（暗沉沉的）./ He can not only repair radios but also fix them./ It is a glorious（光荣的）yet difficult task./ Strike while iron is hot. （二）从属连词 从属连词是指在复合句中引导从句的连结词。常见的从属连词有： 引导时间状语从句的：after, before, when, as, while, since, until, till, as soon as 引导原因状语从句的：because, since, as 引导让步状语从句的：although, though, no matter（无论）, even if (though) 引导条件状语从句的：if, unless, once, so (as) long as 引导结果状语从句的：so … that …, such … that … 引导目的状语从句的：so that …, in order that … 引导比较状语从句的：as … as …, not so (as) … as …, … than … 引导方式状语从句的：as if … 引导主语，宾语或表语从句的连词主要有：that, whether, if三个。其中that 和whether间或还可以引起同位从句和状语从句。 （三）某些用法比较特殊的从属连词用法区别 1、当while, when, as引导时间状语从句时的区别：①while引导的状语从句中动词必须是持续性。谓语动词多为进行时，或状态动词的一般时。while 的这些用法可用when代替，等于 "at the time that", "during the time that"。例如：Please keep quiet while (when) others are studying；② when除可指一段时间外，还可用来指一点时间，等于 "at the time"，也就是说when引出的时间状语从句中的谓语动词可以是终止性的，也可以延续性的。因此主句和从句的谓语可以是一般时，进行时，或完成时。例如：When I went into the lab, the teacher was doing an experiment.（when不能换成while）He often makes mistakes when he is speaking English.（when可换成while）③as常可与when，while通用，但强调"一边、一边"。例如：As (when, while) I was walking down the street, I noticed a police car in front of number 37. ④when引导的状语从句中的主语与主句主语一致，主、谓是"主语系动词"结构时，这时主语和系动词可以省略。例如：When (he was) young, he worked for a rich man./ She'll be here to give you help when (if it is) necessary. ⑤when有时代替if，引导条件句，意为"如果"、"假如"，例如：I'll come when (if) I'm free. 2、before作连词一般表示时间，意为"在…之前"，但有些句子中这样译就显得别扭。试看以下句子的翻译：He almost knocked me down before he saw me.他几乎把我撞倒才看见我；Before I could get in a word he had measured me.我还没来得及插话，