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1、教案 7.19英语连词用法和总结一、概述连词是一种虚词(虚词:无实在意义,在句子中不能独立承担句子成分的一类词) ,用于连接单词、短语、从句或句子,在句子中不单独用作句子成分。 连词按其性质可分为并列连词和从属连词。 并列连词用于连接并列的单词、短语、从句或句子,如 and, but, or, for等;从属连词主要引出名词性从句(主语从句、宾语从句、表语从句等)和状语从句(时间状语从句、条件状语从句、目的状语从句等),引出名词性从句的连词如 that, whether 等,引出状语从句的连词如 when,because, since, if 等。二、并列连词的用法(一)、表示转折关系的并列连
2、词。主要有but(但是),yet(可是),while(而,去D等。如: I would have written before but I have been ill. 我本该早写信的,但我生病了。I have failed, yet I shall try again. 我失败了,但我还要尝试。You like tennis, while I'd rather read. 你爱打网球,但我爱看书but 的用法举例1. 连接词或短语He drives not carefully but slowly. 他开车不是很小心,而是开得很慢。2. 连接句子This isn't a go
3、od one but it will answer. 这不太好,但可以将就用。1 / 22She has had no answer to him but he gave no answe俄向他说了 早上 好,但他没有回应。3. 用于句首But in secret she was delighted.但她暗中感到高兴。But what else can we do? 我们还能做什么 ?4. 用于道歉的表达之后Sorry, but we're behind schedule. 抱歉,我们落在计划后了。I'm frightfully sorry, but I can't s
4、ee you today. 太对不起了,我今天不能见你5. 用于 not - but- -,表示 “不是而是”Not you but I am to blame. 不是你的错而是我的错。6. 用在某些否定语后,表示“只”:He eats nothing but hamburgers. 他只吃汉堡包。She knows no one but you. 她只认识你。You have nobody but yourself to blame. 只能怪你自己。7. 用于next (last) but one中,表示“隔壁再过去”“倒数第”He lives in the next house but o
5、ne. 他住在隔壁再过去一家。He was the last but one to arrive. 他是倒数第二个到的。8. can't help but 不由得不You can't help but respect them. 你不由得不尊敬他们。I can't help but wonder what I should do next. 我不由得不想知道下一步该怎么办。2 / 22【注意】不要按汉语意思将“虽然但是/直译为although but: 误: Though we are poor, but we are happy. 去掉(though 或 but 中任
6、一个)but 与 however 的用法区别两者均可表示转折或对比,意为“但是” 、 “可是” 、 “然而”等,但有区别:1. 表示转折时, but 是连词。如:He is young but very experienced. 他虽年轻,但经验很丰富。He has three daughters but no sons. 他有 3 个女儿,但没有儿子。2. however 表示“然而” 、 “可是”时,有的词书认为它是连词,有的词书认为它是副词。 之所以将其视为副词, 也许是因为像许多副词一样不仅能位于句首,而且能位于句中(注意前后使用逗号),甚至句末(注意其前也用逗号)。如:Later,
7、however, he changed his mind.可是他后来改变了 主意。He said that it was so; he was mistaken, however他说情况如止匕, 可是 他错了。注意:以上各例中的 however 不能换成but ,但可用but 来改写。如:He said that it was so, but he was mistaken.他说情况如此,可他错了。3. 当连接两个句子时,其前通常应用分号,或另起新句。如:It's raining hard; however, I think we should go out. / It's r
8、aining hard. However,I think we should go out. 雨下得很大,但我想我们还得出去。注意:上例中的 however 不能换成but ,但可用but 来改写(注意所用标点的变化 )。如:It's raining hard, but I think we should go out.yet 的用法 3 / 221、 yet 用作连词时, 与 but 一样也主要用于转折, 意为 “但是” “而” : I have failed, yet I shall try again. 我失败了,但我还要尝试。2、有时用在句首。如:Yet the house w
9、as cheerful. 但屋子里显得很欢快。3、yet有时可与并列连词and或but连用,构成习语and yet和but yet, 意为“虽然如此” “可是” “然而” , 与单独使用的 yet 意思相同。如:He's not really nice-looking, and yet he has enormous charm. 他并不十 分好看,可是他很有魅力。4、 根据英语习惯, although 不能与连词 but 搭配使用, 但是 although 可以与 yet 搭配连用(此时的 yet 可视为副词) 。如:Although we are poor, yet we are
10、happy. 尽管我们穷,但我们很快活。Although we have made some progress, yet we still have a long way to go.我们虽然取得了些进步,但还是远远不够的。while 的用法1、考查表示时间的用法,其意为“当的时候”。We must strike while the iron is hot. 我们要趁热打铁。Stand still while I take your photograph. 我给你拍照时站着不要动。2、考查表示让步的用法,其意为“尽管”“虽然” 。如:While the work was difficult,
11、it was interesting. 虽然工作有难度,但很有趣。While I understand what you say, I can't agree with you. 虽然我理解你的意思,但我还是不同意。3、考查表示对比的用法,其意为“而” “但” 。如: 4 / 22In some places women are expected to earn money while men work at home and raise their children. 有些地方妇女挣钱,而男子则在家里持家和带孩子。注意:这样用时, while 引出的句子有时也可位于句首。如:Whil
12、e most children learn to read easily, some need extra help.大多数儿童学会阅读很容易,有一些儿童却需要特别帮助。4、考查其省略用法,即主句与从句主语相同,且从句谓语动词含有动词be时,通常可省略从句主语和动词be。如:While (he was) in prison, she wrote her first novel. 她在狱中写出了第一部小说。He had strayed from home while still a boy. 他小时候就离开家到处流浪了。I was only listening to the radio with
13、 half an ear, while (I was) preparing somefood.我正在做吃的东西,没太留心听收音机。(二)、表选择的并列连词主要or (或者,还是,否则),$此60广(不是就是),neither or(既不也不),otherwise (要不然)等。注:neither nor连接 两个句子,注意用倒装语序。Be careful about what you say or you may regret it. 当心你讲的话,否则你会后悔的。Either say you're sorry or else get out! 你要么道歉,要么滚开!Neither d
14、oes he smoke nor does he drink. 他既不抽烟也不喝酒。Seize the chance, otherwise you will regret it.5 / 22or 的用法1、表示选择,意为“或”“还是” :Is the radio off or on? 无线电关上了还是开着的 ?Would you prefer tea or coffee? 你喜欢茶还是咖啡?2、表示一种否定的条件,意为“否则”:Dress warmly, or else you'll catch cold.穿暖和点,否则你会感冒的。Be careful, or you'll b
15、reak that vase! 小心,否则你会把那花瓶打碎 !3、可表示“要不就是”:He must be joking, or else he's mad.他一定在说笑话,要不就是疯了。The book must be here, or else you've lost it. 这书一定在这儿,要不就是你丢失了。4、用于否定句中代替and。He was not clever or good-looking. 他不聪明,也长得不好看。5、用于习语The work is more or less finished. 工作大体上完成了。They consist of 1700 or
16、 more tribes. 他们由 1700 个或更多部族构成。There's just one or two details I want to make sure about. 还有一两个细节我想弄清楚。(三)、表示因果关系的并列连词。主要有for(因为),so(因止匕)等。如:He shook his head, for he thought . 他摇了摇头,因为他有不同想法。6 / 22He told me to do it, so I did it. 他让我这样做,于是我就这样做了。注意: for 表示结果通常不能放句首,也不能单独使用。for 的用法归纳for 表示原因时的
17、四个“不能”1、 for 引导的从句不能位于它所解释的动词之前:Because it was wet he took a taxi. 因为下雨,他叫了一辆出租车。 (这 里不能用 for )2、 for 引导的从句不能位于 not, but 或任何连词之后:He stole, not because he wanted the money but because he liked stealing.他偷东西,并不是因为他想要钱,而是他有这种毛病。 (这里不能用for)for 的用法归纳3、 for 引导的从句不能用于回答问题: Why did you do it? 你为什么这么做? I did
18、 it because l was angry.因为我生气才这么做的。(这里不能用 for)注意:之所以有这些用法上的限定,其理由是 for 引导的从句不能直接说明某一特定动作发生的原因, 而只能提供一些起帮助解释作用的附加说明。例如:The days were short, for it was now December.天短了, 现在已是 12 月了。for 的用法归纳连词 so 的用法1、 so 用作连词,主要用于表结果,意为“所以” :It's very cold, so wear a heavy coat.外边很冷,因此穿一件厚大衣。7 / 22The door was lo
19、cked, so we couldn't get in. 门上锁了, 所以我们进不去。2、有时可与并列连词and连用,构成习语and so(相当so):He worked hard and so he succeeded.他勤奋工作,所以他取得了成功。 (四 )、表示并列关系的并列连词。这类连词主要有 and , or , either - or , neithernor , not only but(also) ,both and , as well as ,when(=and just at this time 就在这时)等。如: Give him an inch and he w
20、ill take a mile。.Not only did he speak more correctly, but he spoke more easily不仅他 讲得更正确,也讲得更不费劲了。He was about to go to bed when the telephone rang. 他正要上床睡觉,这时电话铃响了起来。He didn't go and she didn't go either. 他没去,她也没去。连词 and 用法方方面面(1) 基本义为 “和” “又” “而且”等,但它有时还可表示对比或转折, 相当于汉语的“而” “但” “却” 。如:She
21、39;s a bank manager and I'm just a roa-dsweeper. 她是银行经理, 而我 不过是个扫街的。(2) 有时用于连接两个相同的词语,主要有以下用法:(1)连接两个相同的比较级,表示“越来越”。如:The weather is getting colder and colder. 天气越来越冷了。连词 and 用法方方面面(3) 连接两个相同的动词,表示动作的反复或连续。如: 8 / 22He coughed and coughed. 他咳个不停。He tried and tried but without success. 他试了又试却未成功。(
22、4) 连接两个相同的副词,也表示动作的反复或连续。如:He kept moaning on and on. 他呻吟不已。连词 and 用法方方面面(5) 连接两个相同的名词,有以下两种主要用法:表示“许多”。如:They talked for hours and hours. 他们谈了很长很长时间。The road went on for miles and miles. 这条路很长很长。强调差别,意为“与不同”。如:Don't worry there are rules and rules. 别担心规则跟规则不一样。I like city life but there are cit
23、ies and cities. 我喜欢城市生活,但城市之 间也有差别。连词 and 用法方方面面I must go and help my mother. 我必须去帮助我母亲。I' m thinking of going to look for mushrooms. 我想去采蘑菇。 连词 and 用法方方面面4. 用在祈使句后,表示结果,意为“那么” (暗示一种条件) 。如:Work hard and you'll pass the examinations (=If you work hard, you'll pass the examinations).努力吧,你考
24、试会及格的。9 / 22连词 and 用法方方面面有时也可以不是用于后表示结果。如:One more step and I will fire. 你再动一步,我就要开枪了。5. 用在 good, nice, fine 等之后,表示“很” “挺” 。如:I won't go until I'm good and ready. 我完全准备好了才去。Make sure you cut the bread nice and thick. 你一定要把面包片切得厚 厚的。7. 某些用 and 连接的两个词,与汉语顺序相反,不要按汉语词序颠倒过来。如:rich and poor 贫富水陆左右
25、north and south 南北food and drink 饮食衣食三、从属连词的用法(一)、引导时间状语从句的从属连词1、表示“当时候”或“每当”的时间连词。主要的when, while, as,whenever。如:Don't talk while you're eating. 吃饭时不要说话。Vegetables are best when they are fresh.蔬菜新鲜时最好吃。He came just as I was leaving.我正要走时他来了。10 / 222、表示“在之前(或之后)”的时间连词。主要的有 before, after如:Try
26、to finish your work before you leave. 离开前设法把工作做完。After we have finished tea, we will sit on the grass. 喝完茶之后我们将坐在草地上3、表示“自从”或“直到”的时间连词。主要的有如:since, until, till 。She's been playing tennis since she was eight 她从八岁起就打网球了。Hold on until I fetch help. 坚持一下,等我找人来帮忙。Never trouble trouble till trouble tr
27、oubles you. ( 谚)不要无事惹事。4、表示“一就”的时间连词。主要的有as soon as, the moment, the minute,the second, the instant, immediately, directly, instantly, once, nosooner than,hardly when 等。如:I'll let you know as soon as I hear from her.我一接她的信就通知你。The moment I have finished I'll give you a call.我一干完就给你打电话。I came
28、 immediately I heard the news. 我一听到这个消息,马上就来了。4、表示“上次” 、 “下次” 、 “每次”等的时间连词。主要的有everytime(每次),each time(每次),(the) next time(下次),any time(随时),(the) last time(上次),the first time(第一次)。如:I'll tell him about it (the) next time I see him. 我下一次见到他时,我就把这个情况告诉他。You can call me any time you want to.你随时者B可以
29、给我打电话。注意:every time, each time, any time 前不用冠词,(the) next time, (the) lasttime 中的冠词可以省略,而the first time 中的冠词通常不能省略。11 / 22 as 的用法as 用作连词有哪些用法as 用作连词用法如下:1、表示伴随,意为“随着”。如:As time passed, things seemed to get worse.随着时间的推移,情况似 乎变得更糟了。若其后不接从句,而接名词,则用介词 with 表示“随着” 。如:With the development of modern agric
30、ulture and industry, more and morewaste is produced. 随着现代工农业的发展,污染越来越严重了。as 的用法2、 表示让步, 意为 “虽然” “尽管” , 要用于倒装句 (相当于 though , 但语气稍弱) 。如:Boy as he was, he behaved like a girl他虽然是个男孩,但举止却像个 女孩。Much as I like you, I couldn't live with you. 我尽管很喜欢你,却不能和你一起生活。as 的用法3、表示时间,意为“当时候”。如:He dropped the glass
31、 as he stood up.他站起来时,把杯子摔了。注意, as 引导时态状语从句时,其谓语动词通常只能是,而不能是或状态动词。如: 她出生后不久父母双亡,是由姑母抚养大的。误: Her parents died as she was a baby and she was brought up by her aunt.12 / 22正: Her parents died when she was a baby and she was brought up by her aunt.as 的用法4、表示原因,引导原因状语从句时,其谓语动词可以是动作动词,也可以是状态动词。如:As you we
32、ren't there I left a message. 因为你不在那里,我留了个信儿。另外,引导原因状语从句,可用以下这样的倒装语序。如:Tired as she was, I decided not to disturb her.因为她累了, 我就决定不打扰她了。(二)、引导条件状语从句的从属连词。这类连词主要有 if, unless, as so long as, in case。如:Do you mind if I open the window?我开窗你不介意吧?注意:在条件状语从句中, 通常要用一般现在时表示将来意义,而不能直接使用将来时态。不过,有时表示条件的 if 之
33、后可能用 will ,但那不是将来时态, 而是表示意愿或委婉的请求(will 为情态动词 )。 如:If you will sit down for a few moments, I'll tell the manager you're here.请稍坐 ,我这就通知经理说您来了。if 与 whether 的用法区别两者在表示“是否”时的用法区别如下:1. 互换的场合引导宾语从句表示“是否”时 , 两者常可互换。如:He asked if whether we wanted a drink. 他问我们是否想喝一杯。注:若是引导条件状语从句,则只能用 if (意为“如果” )。
34、13 / 222. 通常用 if 的场合当引导一个否定的宾语从句时,通常用 if 而不用 whether 。如:I don't care if it doesn't rain. 我不在乎天是否下雨。注: 在个别词语(如 wonder, not sure 等)后的从句否定式有时也可能用whether 来引导。如:I wonder if whether he isn't mistaken. 我想知道他是否错了。3. 通常用 whether 的场合(1) 引导主语从句且放在句首时。如:注: 若在句首使用形式主语it , 而将主语从句放在句末, 则有时也可用 if来引导。如:(
35、2) 引导表语从句时。如:The question is whether we should go on with the work. 问题是我们是否应该继续进行这项工作。注:引导表语从句偶尔也用 if (很不正式) ,但远不如用whether 常见。(3) 引导宾语从句且放在句首时。如:Whether he is single I don't know. 他是否单身,我不知道。(4) 引导让步状语从句时。如:Whether he agrees or not, I shall do that. 不管他同意与否,我都要那样做。(5) 与 or 连用分别引导两个从句时。如:I don
36、9;t know whether he is wrong or she is wrong. 我不知道是他错了,还是她错了。(6) 用于不定式之前时。如:14 / 22I'm not sure whether to stay or leave. 我不知是留还是去。(7) 用于介词之后时。如:It depends on whether the letter arrives in time. 这取决于信是否来得及时。(8) 直接与 or not 连用时。如:(9) 在某些动词后(如 discuss 等) 通常只用whether。如:We discussed whether we should
37、 hold a meeting. 我们讨论了是否要开一个会。(三)、引导目的状语从句的从属连词。主要的有 in order that, so that, in case, for fear等。 如:He raised his voice so that everyone could hear他提高了 嗓音,以便每个人都能听见。Take your umbrella (just) in case it rains.带上雨伞,以防下雨。in case 用作连词的用法in case 用作连词时有以下两个用法:1. 表示条件,意为“如果” “万一”。如:In case it rains, do not
38、expect me. 如果下雨,就不要等我了。2. 表示目的,意为“以防” “生怕”。如:I'm shy of buying shares in case I lose money.我不敢买股票,怕贝夸钱。15 / 22Take warm clothes in case the weather is cold.带些暖和的衣服, 以防天气变冷。注:有时中间的谓语由 should 构成,强调偶然性,可译为“万一” :I wrote down her address in case I should forget it. 我写下了她的地址,以防万一我忘了I always slept by t
39、he phone in case he should ring during the night.我总是睡在电话机旁边,怕万一他夜间打电话来。(四 )、引导结果状语从句的从属连词。主要的有so that, sothat, suchthat等。如:I went to the lecture early so that I got a good seat. 我去听演讲去得很 早 , 所以找个好座位。I had so many falls that I was black and blue all over.我摔了许多跤,以致于全身都是青一块紫一块的。(五)、引导原因状语从句的从属连词,主要的有 b
40、ecause, as, since, seeing (that), now (that), considering (that) 等。如:He distrusted me because I was new.他不信任我,因为我是新来的。As you are sorry, I'll forgive you. 既然你悔悟了,我就原谅你。Since we've no money, we can't buy it. 由于我们没钱, 我们无法购买它。1. because 除经常用于引导原因状语从句外, 还可引出表语从句或用于强调句等。如:It is because you'
41、;re eating too much. 那是因为你吃得太多了。It was because I wanted to buy a dictionary that I went to town yesterday.16 / 22我昨天是由于想买本字典而进城的。2、用于构成复合介词because of,其后可接名词、代词、动名词、what从句(但不能是that 从句或没有引导词的从句)等。如:He is here because of you (that).他为你(那事)而来这里。We said nothing about it, because of his wife's being t
42、here. 因为他妻子在那儿,我们对此只字未提。because, since, as, for 用法区另U(1) 关于because: 语气最强, 表示直接原因, 可用于回答why 提出的问题、引导表语从句、用于强调句等,而其余三者均不行:because, since, as, for 用法区另U(2) 关于 since 与 as:a. 两者所表示的原因都是人们已知的,即对已知事实提供理由,而不是表示直接原因。 since 比 as 语气稍强,且比 as 略为正式,它们引导的从句通常放在主句之前,有时也放在主句之后:As you weren't there, I left a mess
43、age. 由于你不在那儿, 我留了个口信。Since you are wrong, you should apologize.你既然错了,就应该道歉。because, since, as, for 用法区另Usince 可用于省略句,而其他三者不行:Since so, I have nothing to say既然如此,我无话可说。(3) 关于 for :是(其余三者为从属连词),它有时可表示因果关系(通常要放在主句之后,且可与because 换用 ); 有时不表示因果关系, 而是对前面分句内容的解释或推断 (也要放在主句之后,但不能17 / 22because, since, as, for
44、 用法区另U与 because 换用 ) 。比较:The ground is wet, for (=because) it rained last night. 地面是湿的, 因为昨晚下过雨。It must have rained last night, for the ground is wet this morning.昨晚一定下过雨,你看今天早上地面是湿的。(此句不能用because代for)如何理解 in that 引导从句的用法如果用 in that 引导从句,则它是一个习语,意思是“因为” “由于” ,与从属连词because意思相同。如:She was fortunate in
45、that she had friends to help her. 她很幸运, 有一些朋友帮助她。由于我们有两位总经理,所以情况很复杂。(六)、引导让步状语从句的从属连词。主要的有 although, though, even though, even if, while, however,whatever,whoever, whenever, wherever等。如:I like her even though she can be annoying.尽管她有时彳艮恼人 , 但我 还是喜欢她。You won't move that stone, however strong you
46、are. 不管你力气多大,也休想搬动那块石头。Whatever we have achieved, we owe to your support. 我们取得的一切成就都归功于你们的支持。although 与 though 用法区别与说明18 / 221. 用作连词,表示“虽然” ,两者大致同义,可换用,只是although比though 更为正式。如:Though Although they're expensive, people buy them. 虽然它们很昂贵,人们还是买。2. although 一般不用作副词,而 though 可用作副词,表示“可是”“不过” 。如:I ex
47、pect you're right I'll ask him, though. 我认为你说得对我去问问他也好。这样用的 though 通常位于句末, 但有时位于句首的 though 也有这样的意思。如:although 与 though 用法区别与说明2、在as though (好像,仿佛),even though (即使,纵然)等固定 短语中,不能用 although 代替 though 。如:She treats me as though I were a stranger她待我仿佛我是一个陌 生人。He's the best teacher even though
48、 he has the least experience他尽管 经验最少,但教得最好。although 与 though 用法区别与说明3. 当 though 用于倒装形式,它不能换成although ,但可换成as。Successful though as he is, he is not proud.他虽然成功,但不骄傲。Much though as I like you, I couldn't live with you. 我尽管很喜欢你 , 却不能和你在一起生活。注意:值得一提的是,在某些特定的语境中, although 与 but 连用的句子是可能的(注: but 引出的句子
49、在although 从句之前) 。如:He wanted to go abroad, but although he had some money he couldn't afford it.19 / 22(七)、 引导方式状语从句的从属连词。 主要的有 as, as if, as though, theway 等。如:Why didn't you catch the last bus as I told you to? 你怎么不听我的话赶乘末班公共汽车呢 ?He bent the iron bar as if it had been made of rubber. 他将铁棍折
50、弯, 仿佛那是用橡皮做成的。(八)、引导地点状语从句的从属连词。主要的有where, wherever,everywhere, anywhere 等。如:The church was built where there had once been a Roman temple.这座 教堂盖在一座罗马寺庙的旧址。I'll take you anywhere you like. 你想到哪儿我就带你到哪儿。(九卜引导比较状语从句的从属连词。主要的有 than和asas。如:She was now happier than she had ever been.现在她比过去任何时候 都快活。I glanced at my watch. It was earlier than I though
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