before-句型

before-句型
before-句型

句型:

(1) It will be +时间+ before + 还有多长时间……

例:It will be 4 years before he graduates. 他还有四年时间就毕业了。

(2) It was +一段时间+ before 过了多久就……

例:It wasn’t two years before he left the country. 还没到两年他们离开了那国家。

(3) before sb can/ could … 某人还没来得及……

例:Before I could get in a word ,he had measured me.

(4) 过了多久才……

例:We had walked a long way before we found some water.

(5)还有“趁……(还没有)”之意。例如:They are thinking of buying the house before the prices go up.

(6) before long是“很快,不久”的意思, 可以用于各种时态。Before long, he went to America.

(7) long before是“很久以前”的意思

Eg: That happened long before. 那件事发生在很久以前。

They had known each other long before they got married.

10. since 句型:

It is/ has been +时间段+ since…+一般过去时. (到目前为止)干某事有多长时间了

It was + 时间段+ since +过去完成时(到过去某时间为止)干某事有多长时间了

Sb/ sth.+ 现在完成时+since+ 过去时。。(注意从句的谓语动词是否延续)

Eg: It is about ten days since he came back from abroad.

It was days since I had left there.

比较一下:

He has written to me frequently since I fell ill. 自从我生病以来,他就经常给我写信。

He has written to me frequently since I was ill. 自从我病愈以来,他经常给我写信。11. when 句型:

It will be +时间+ when +一般现在时当某事发生时,时间将会是。。。

It was +时间+ when+一般过去时当某事发生时,时间是。。

Eg: It will be midnight when they get there . It was 1949 when new China was founded.

keep 的用法

Keep的用法: keep vt., vi. kept, keeping 保留;保守 I keep old letters.我保存旧信。 I'll keep the original copy of your report on file. 我会把你报告的原件归档的。 It's an interesting suggestion and we'll keep it on ice." 这是一项有趣的建议,我们将留待以后考虑采用。" 保持;继续 We will keep on trying and, if we get anything done, will notify you. 我们将继续努力,有结果将通知你。 Leaders shouldn't keep themselves aloof from the masses. 领导人决不应该脱离群众。 Keep calm!安静! You shouldn't keep chopping and changing like this; you'd better make up your mind right now! "你不能再这样变化无常了,最好现在就拿定主意!" 遵守 He keeps to his promise.他守约。 "Everyone should keep discipline, and you, officers are no exception." "每个人都应该遵守纪律,你们军官也不例外。" 保卫;保护 Keep the baby warm.别把婴儿冻着。(常与from连用)防止;抑制 Keep one's temper。抑制住不发脾气。 Keep a curb on your anger.请抑制住怒气。 扣留;留下 Please keep me a place in the queue.请在队里给我留个位置。 赡养;饲养 to keep a dog养狗 Farmers usually keep chickens in their backyard. 农民们通常在自己的后院养鸡。 经营;经销;管理 to keep a shop开商店 to keep house治家 (常与from连用)远离;不接触 Keep away from the scene of the accident.勿靠近事故现场。 Their dog looked dangerous, we decided to keep our distance from it. 他们家那条狗样子很凶恶,因此我们决定离它远一点。 But the stone walls keep the farmer's cows from joining his neighbor's cows. 但是石头墙使这家农民的母牛不会加入到邻居的牛群中去。

before详细用法

after用法小议 通常用于过去时、现在时(主将从现)或完成时态的句子中。 1. 1. 用作介词,与一段时间连用表示“在…之后”时,注意它与 in的区别:after表示以过去时间为起点的一段时间以后,且通常与过去时态连用;而in则表示以现在为起点的一段时间以后:He came back after two days. 他两天后就回来了。He will come back in two days. 他过两天就回来。但 after 若是与一点时间连用,则可与过去时态也可与将来时态连用:He came back after 4 o’clock. 他是四点钟以后回来的。 He will come back after next month. 他将在下个月以后回来。 eg. 2. I played computer games after I had finished my homework. 做完功课后,我玩电脑游戏。(从句的动作发生在主句的动作前,因此,主句用一般过去式,从句用过去完成时.) Before和after引导的时间状语从句中,由于before和after 本身的词义已经能够表明动作发生的先后,所以主句可以用一般时代替完成时,也可以用完成时。 I knew/had known her long before you knew her.我认识她早在你认识他之前。 After you finish/have finished all your homework,you can watch TV this evening.你完成所有的作业后,今晚可以看电视。

2. 用作连词引导时间状语从句时注意:若主句用将来时态 (或含有将来意味),则时间状语从句要用一般现在时态 (表将来意义)表将来意义,而不能直接使用将来时态:他回来后我就走。正:I’ll leave after he comes back. 误:I’ll leave after he will come back. 3. 用作副词,表示“后来”、“ (一段时间)以后”,通常放在表示时间的副词之后:soon after 不久以后 two days after两天后 The plane was hijacked soon after it took off. Two days later he was gone. 4. 用于习语after all 终究,毕竟:I was right after all. 毕竟我是对的。After all, he’s only six years old. 毕竟,他才六岁。 before用法小结 请先看2005年广东省的一道高考题: The American Civil War lasted four years _______ the North won in the end. A. after B. before C. when D. then

keep的用法

1.keep +形容词 2.keep+sth/sb +形容词 3.keep +doing 一直做某事 4.keep ... from doing ... 阻止做某事。。。 5.keep a pet 饲养一个宠物 6.How long may I keep this book ? keep指借。 keep的用法小结 keep是高考常考词汇之一,其含义丰富,与其搭配的短语也很多,其主要用法如下: A、用作及物动词 (1)保留、保存、保持、留下 e.g. We'd better keep a seat for him. 我们最好给他留个座位。 He kept all the money in the bank. 他把所有的钱都存入了银行。 (2)履行(诺言)遵守 e.g. One should keep one's promise. 一个人应当遵守自己的诺言。 Everybody must keep the law. 人人都必须守法。 (3)赡养,养活,饲养 e.g. He has a large family to keep. 他有一大家人要养活。 The old man kept many animals like dogs, pigs and cats. 这位老人养了许多动物,像狗、猪、还有猫等。 (4)经营,管理

e.g. He kept a hotel in this city. 在这座城市里,他开了一家旅店。 She is good at keeping house. 她擅长管理家务。 (5)保守(秘密),记(日记、帐) e.g. All of the people keep the Spring Festival in our country. 我国所有的人都庆祝春节。 Some of them keep birthdays. 他们中有些人庆祝生日。 (7)使……处于某种状态(情况) 在这种情况下,keep常跟复合结构(keep+宾语+补语)。用作宾语补足语常见的词有现在分词、过去分词、形容词、副词以及介词短语。 e.g. He kept me waiting for half an hour. 他让我等了半个小时。 Keep your mouth shut and your eyes open. 少说话,多观察。 The doctor kept me in for a week. 医生一周没让我出去。 He always keeps his books in good order. 他总是把书放得整整齐齐。 B、用作不及物动词 (1)保持、继续(处于某种状态)(keep为连系动词)

before的详细用法

before的详细用法 Before 在英语中是一个比较常用的虚词,它既可作介词或副词用,也可作从属连词用。在近几年的高考试题中常常出现考查其从属连词用法的题目。其用法如下: 1.表示“在…..之前就…..”。 Mary had finished her homework before her mother returned. 2.表示“过了多久后才…….. ,动作进行到什么程度才……” They walked about 30 miles to the west before they saw a village . 3.表示“来不及;尚未…..就…” He ran off before I could stop him . 4.表示“刚…就…” I had hardly sat down before the bell rang. 5.表示“不知不觉就…..;还没弄清就……” Time passed quickly and three months went by before Aqiao knew it. 6.表示“宁愿…,决不…,与其…,毋宁….”常与will 或would 连用。 I would / will die before I surrender . 7.表示“否则;以免” I will write it down before I forget it . 8.用于句型“it was+时间段+ before …” 表示“过了多久才…” It was three days before he came back. . 9.用于句型“ it was not long +时间段+ before …” 意为“不久就….” It was not long before he sensed the danger of the position . 10. 用于句型“it will be(not )+时间段+ before….”表示“要过多久/ 不久…才…” It will be half a year before you graduate from this school .

before用法

1.表示“在……之前”.说明两个时间或两个事件之间的先后关系. 1)They had got everything ready before I arrived. 在我到达之前他们已经把一切都准备好了. 2)She didn’t understand me before I explained it to her. 在我向她解释之前,她不理解我的意思. 3)The train had left before I arrived at the station. 在我到达车站之前火车已开走了. 2.表示“……才……”,强调从句的谓语动词所表达的时间、距离很长或花费的力量比较大. 1)The workers worked long hours for two weeks before everything returned to normal.工人们长时间地工作了两周,一切才恢复正常. 2)The big fire lasted four hours before the firemen brought it under contro1.大火持续了四个小时,消防队员才把它控制住. 3) We waited a long time before the train arrived.我们等了很长时间 火车才到. 3.表示“还未来得及……就……”,强调主句谓语动词所表达的时间、距离很短或花费的精力比较小. 1)Before I could figure out what had happened, he forced me into the car.我还不知道发生了什么,他就强行把我推进了汽车. 2)He jumped into the water before I could stop him. 我还没有来得及阻止他,他就跳进了水里. 3)Her father died before she was born.她尚未出世父亲就去世了. 4.表示“趁着……”. 1)We can set off early before it gets hot. 我们可以趁着天不热早点出发. 2)You’d better write the phrases down before you forget them. 趁着你还没有忘记,赶紧把这些词组写下来. 3)Please put them away before they are missing. 趁着他们还没有丢,把它们收好吧. 5.表示“一……就”、“刚刚……就”.与hardly.scarcely连用 1)He hadhardly gone to bed before(=when)the door bell rang. 他刚刚睡下,门铃就响了. 2)She had scarcely got off the train before(=when)her daughter ran towards her.她刚一下车,女儿就跑了过来. 6.表示“不知不觉多少时间已经过去了”. 1)He was so absorbed in his work that four hours had passed before he

keep的用法

用作动词(v.) keep about〔around〕1( v.+adv. ) 1. 继续履行职责go on with one's duties keep about〔around〕 She is very ill, but she still keeps about. 她虽然病得很重,但仍然继续工作。 2. 使手边常有have sth always present keep sth ? about〔around〕 I like to keep a few envelopes around in case I need them.我喜欢手边常有几个信封,以应不时之需。 keep about〔around〕2 ( v.+prep. ) keep abreast of( v.+adv.+prep. ) keep after( v.+prep. ) keep aloof( v.+adv. )

keep apart( v.+adv. ) keep at( v.+prep. ) keep away( v.+adv. ) keep away from( v.+adv.+prep. ) keep back( v.+adv. ) keep behind1( v.+adv. ) keep behind2 ( v.+prep. ) keep by1( v.+adv. ) keep by2( v.+prep. ) keep down( v.+adv. ) keep for( v.+prep. ) keep from( v.+prep. ) keep going( v.+adj. ) keep in1( v.+adv. ) keep in2( v.+prep. )

(word完整版)It+willbe+时间段+before等表示“在……之后……才”的句型总结,推荐文档

It + will be + 时间段 + before等表示“在……之后……才”的句型总结 一、用于句型“It + will be + 时间段 + before...”句型中,表示“要过多久才…”,也可用于“It + may be + 时间段 + before...”,表示“也许要过多久才……”。Before 后的句子中用一般现在时态。 其否定形式“It will/would not be +时间段+ before…”表示“不久就……,过不了多久就……”。 【典型考例】 (1)The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again.(2007安徽卷) A. after B. before C. since D. when (2)—How long do you think it will be ______China sends a manned spaceship to the moon? (2006福建卷) —Perhaps two or three years. A. when B. until C. that D. before (3)It ________ long before we _______ the result of the experiment.( 上海春招2002) A. will not be...will know B. is...will know C. will not be...know D. is...know (4) Scientists say it may be five or six years_________ it is possible to test this medicine on human patients. (2004福建) A. since B. after C. before D. when 解析:答案为BDCC。考题 (1)(2)before 用于肯定的“It + will be + 时间段 + before...”句型中,表示“要过多久…才…”。 (3)before在本题中用于否定句,意为“过不了多久就会……”, 状语从句要用一般现在时代替一般将来时,可知C项为正确答案,句意是:要不了多久我们就会知道试验的结果了。 (4)宾语从句中含有句型“It + may be + 时间段 + before...”,表示“也许要过多久才……”,故选择答案C。 二、用于句型“it was +时间段+ before …”表示“过了(多长时间)才……”。其否定形式“ it was not +时间段+ before …”意为“不久就……”, “没过(多长时间)就……”。 【典型考例】 It was some time ___________we realized the truth. (2005山东) A. when B. until C. since D. before 解析:答案为D。before用于句型“it was +时间段+ before …”表示“过了(多长时间)才……”。该题题意是“过了一段时间我们才意识到事情的真相”。故正确答案为C项。

Before的详细用法总结

Before的详细用法总结 今天给大家带来Before的用法,我们一起来学习吧,下面就和大家分享,来欣赏一下吧。 Before的用法 我们最初接触的Before一般是作为介词使用的,一般表示空间上的“在…之前” 。 例如:The tea has been set before her.茶已经摆在她面前了。 Before作为介词时,需要注意的是,一般不用在表示具体时间的词之前。比如,两年之前,我们用two years ago,而不能说.efore two years. Before作为介词时,有一个特殊用法需要注意,即before long 表示“不久之后”。 例如:Before long he got married.不久之后他就结婚了。 Before作为连词时,一般意为“在…之前”,用来引导时间状语从句。引导的从句中的动作一般发生在主句动作之后。 Before作为连词时的用法较为复杂,具体要点如下:

一、主句用一般现在时/一般将来时,从句用一般现在时。 例如:You should let me explain what I did before you criticize me. 在你批评我之前,你应该让我解释一下我做过什么。 二、主句用过去完成时,从句用一般过去时。一般翻译为“在…之前就… ”。 例如:1.His father had died before he was born. 他父亲在他出生之前就已经去世了。 2.She had finished her homework before her mother returned. 她在妈妈返回之前就已经把作业完成了。 三、主句用一般过去时,从句用过去完成时。从句用过去完成时表示一个过去没有完成或没来得及做的、时间顺序在后的动作,常译为“★还没(来得及)…就…★ ”。 例如:1.He rushed out of the office before I had realized what was happening. 我还没意识到发生了什么事,他就冲出去了。 2.She left before I had had a chance to speak to her. 我还没来得及跟她说话,她就离开了。

Keep_用法

Keep 用法知多少 keep 是英语中用法灵活的动词之一,用法归纳如下: 一、用作系动词,意为“保持(某种状态)”,其后常接形容词作表语。如: Please keep quiet / silent! 请保持安静! After the accident, he still kept alive. 这次事故之后,他仍然活着。 二、用作实义动词,可表示: 1. 保管;保存;保留。如: Keep the change. 零钱不用找了。 Please keep these things for me while I am away. 在我离开期间,请你替我保管这些东西。 2. 赡养;饲养。如: Does he earn enough to keep himself and his family? 他的收入够养活他自己和他的家人吗? I used to keep sheep in my childhood. 我在孩提时常常养羊。 3. 经营。如: Her father kept a grocer's shop for a number of years. 她父亲开了几年杂货店。 4. 坚持;继续。后面如接动词,要用V-ing 形式作宾语。如: If you keep (on) practising your spoken English, you'll soon make great progress. 如果你坚持练习英语口语,你很快就会取得很大的进步。 5. 阻止;阻碍。常用于keep sb/sth from doing sth 结构中,其中介词from 不能省略。如: The heavy rain didn't keep them from watching the football match. 大雨没能阻止他们观看足球赛。 6. 保持。其后常接复合宾语,表示使(某人或某物)保持某种状态或使某一动作继续。 ①keep + sb/sth + 介词。如:

before的用法

before的用法 1.表示“在……之前”。说明两个时间或两个事件之间的先后关系。 1)They had got everything ready before I arrived.在我到达之前他们已经把一切都准备好了。 2)She didn’t understand me before I explained it to her.在我向她解释之前,她不理解我的意思。 3)The train had left before I arrived at the station.在我到达车站之前火车已开走了。2.表示“……才…… ”,强调从句的谓语动词所表达的时间、距离很长或花费的力量比较大。 1)The workers worked long hours for two weeks before everything returned to normal.工人们长时间地工作了两周,一切才恢复正常。 2)The big fire lasted four hours before the firemen brought it under contro1.大火持续了四个小时,消防队员才把它控制住。 3) We waited a long time before the train arrived.我们等了很长时间火车才到。 3.表示“还未来得及……就……”,强调主句谓语动词所表达的时间、距离很短或花费的精力比较小。 1)Before I could figure out what had happened,he forced me into the car.我还不知道发生了什么,他就强行把我推进了汽车。 2)He jumped into the water before I could stop him.我还没有来得及阻止他,他就跳进了水里。 3)Her father died before she was born.她尚未出世父亲就去世了。 4.表示“趁着……”。 1)We can set off early before it gets hot.我们可以趁着天不热早点出发。 2)You’d better write the phrases down before you forget them.趁着你还没有忘记,赶紧把这些词组写下来。 3)Please put them away before they are missing.趁着他们还没有丢,把它们收好吧。5.表示“一……就”、“刚刚……就”。与hardly.scarcely连用o 1)He had hardly gone to bed before(=when)the door bell rang.他刚刚睡下,门铃就响了。 2)She had scarcely got off the train before(=when)her daughter ran towards her.她刚一下车,女儿就跑了过来。 6.表示“不知不觉多少时间已经过去了”。 1)He was so absorbed in his work that four hours had passed before he knew it.他如此专注于工作,不知不觉四个小时就过去了。 2)Time passed quickly and three months went by before he knew it.时间飞快地流逝,他没感觉到三个月已过去了。 7.表示“宁可,宁愿”,相当于rather than。 1)I’d die b efore I apologized to them.我宁死也不向他们道歉。 2)1 would be poor before I got money in this way.我宁愿穷也不愿用这种方式挣钱。8.before常用于句型 “it was +段时间+before……”“过了(多长时间)才…… ”; “it will be……before…… ”“要用(多长时间)才……”; “it wasn’t……before……”“没过(多长时间)就……”; “it won’t be……before……”“用不了(多长时间)就会……”。 1)It was long before he came to help me.过了很久他才来帮我。 2)It wasn’t long before the fire was put out.不久火就给扑灭了。

before用法归纳

before用法知多少? 在高考中,状语从句是每年高考单项填空部分必考的题目之一,考查的重点是考生容易混淆并且近似的连词在逻辑行文和语篇结构中的使用。before作连词的用法一直是高考的重点,也是学生感觉掌握起来比较头疼的地方。下面选取近几年各省市的高考试题进行归纳分析,使考生通过典型实例,把握高考对before所引导的句型的命题规律,帮助同学们更好地解答此类题目。 1. before作为连词时的基本意义是“在……之前”,用于表示时间或顺序。 You can’t borrow books from the school library ______ you get your student card. (2009上海,32) A. before B. if C. while D. as 【解析】选A。考查连词,该句的意思是:在你得到你的学生卡之前你不能从学校图书馆借书。before表示先后顺序。 2. 表示“过了多久才……”,说明主句的持续时间比较长而从句的动作缓缓来迟。 (1) The American Civil War lasted four years _______ the North won in the end. (2005广东,30) A. after B. before C. when D. then 【解析】选B。本题考查连词before表示“在多久之后才……”的用法,根据本句含义“美国南北战争持续了四年,北方才最终取得胜利”,可知本题应选B。 (2) Several weeks had gone by I realized the painting was missing. (2004宁夏,39) A. as B. before C. since D. when 【解析】选B。before表示“过多久才……”。句意:几个星期已经过去了,我才意识到油画丢了。内含的意思是油画丢了好几个星期了,我才意识到。 3. 表示从句动作还没来得及发生或完成,主句动作就已经发生或完成了,意为“尚未……就”,“没来得及……就”,常用于before sb. can/ could…。 —Why didn’t you tell him about the meeting? ( 2006四川,35) — He rushed out of the room _________ I could say a word. A. before B. until C. when D. after 【解析】选A。本题考查连词before表示“还没来得及……就……”的用法。句意为:我还没来得及说一句话,他就冲出了房间。 4. 表示“以免,以防,趁……还没有……”,强调动作的必要性,以避免或防止从句动作的发生。 He made a mistake, but then he corrected the situation _____ it got worse.(2003北京) A. until B. when C. before D. as 【解析】选C。由made a mistake和转折词but可知本题句意是“他犯了一个错误,但在事情进一步恶化之前他改变了形势。”故答案正确答案为C项。

(完整版)before的用法归纳

before的用法是很多的人都比较想要了解的,在众人的心中before的用法是比较难的,我们都非常想要去了解before的用法,但是又谈何容易呢?为了让大家更加快速的了解before的用法,下面我们就和教师一起去看看吧,希望对大家有所帮助。 prep.在……之前;先于,优于;当着……的面;与其…… conj.在……之前;在……以前;比……早些;与其…… adv.先前,从前;在前,在前方 before一词含义广泛,是高考考查的热点词汇之一,但部分考生对该词的用法模糊不清。为了帮助大家掌握,现就对before的用法归纳如下: 一、before用作连词 1. before用作连词时,意思是“在……之前;还没来得及…… 就”。强调主句或从句谓语动词表示的动作发生得过早或过快?例如: Before she could move, she heard a great noise, which grew to a terrible roar. 她还没来得及动弹,就听见有很响的声音,接着就成了可怕的隆隆轰鸣声。 Before I could say a word, she had stormed out of the room. 不等我说一句话,她就冲出了房间。 Don’t count your chickens before they are hatched. 不要高兴得过早。 I must finish my homework before I watch TV.我必须做完作业才能看电视。 It still took seven years before they finally got married. 过了七年他们才最终得以成婚。 It will be only a few minutes before she comes back. 她过几分钟就会回来。 He announced the ending of the meeting before I could get in a word. 没容得我插上一句话,他就宣布散会了? Someone called me up in the middle of the night, but they hung up before I could answer the phone.有人半夜给我打电话,但我还未来得及接他就把电话挂断了? They had talked only a few minutes before they found they were quite different in opinion.他们才谈了几分钟就发现他们的意见很不一致? 注意:before从句若是一个将来的动作,则用一般现在时代替一般将来时,如上句中的comes。 2. 用于It + be + 时间段+ before...句型中,意思是“在……之后才……”。例

中考英语keep用法归纳

Keep用法归纳 在人教版初中英语教材中,keep是要求学生必须掌握的四会词之一,现将其多见用法归纳小结如下,以利于大家正确地使用该词。 一、用作及物动词 1.意为“保存;保留;保持;保守“。如: Could you keep these letters for me, please?你能替我保存这些信吗? I“ll keep a seat for you.我给你留个座位。 It can help to keep vegetables, fruit and meat for a long time in hot summer.在炎夏的夏天,它有助于蔬菜、水果和肉类长时间保鲜。 Can you keep a secret?你能保守秘密吗? 2.意为“照顾;养活“等。如: She kept her sister for a week while her sister was ill.她妹妹有病时,她照看她了一个星期。 I have a family to keep.我得养活一家人。 3.意为“留下;不必还“。如: You can keep the pen if you like it.你要是喜欢就把钢笔留下吧。 Keep the change.不用找零钱了。 4.意为“遵守;维护“。如: Everyone must keep the rules.人人必须遵守规章制度。 The teacher is keeping order in class.老师正在课堂上维持秩序。 5.意为“售;卖“。如: The shop keeps everything you need.那家商店里出售的东西应有尽有。

but,than引导定语从句和before,until用法辨析

but和than引导定语从句的用法 一、but可被看作关系代词,引导定语从句,在句中作主语,在意义上相当于 who not或that not,即用在否定词或具有否定意义的词后,构成双重否定。 如:①There is no mother but loves her children.没有不爱自己孩子的母亲。 ②There was no one present but knew the story already.在场的人都知道这个故事。 二、than作关系代词时,一般用在形式为比较级的复合句中,其结构为形容词比较级(more)...than+从句,than在从句中作主语,相当于that,代表它前面的先行词。(这时,它兼有连词和代词的性质,也有学者认为这种用法的than是连词,后面省略了主语what。) 如:①The indoor swimming pool seems to be a great deal more luxious than is necessary.室内游泳池过于豪华。 ②He got more money than was wanted.他得到了更多的钱。运用上述知识翻译下列句子: 1.任何人都喜欢被赞扬。(but) 2.我们大家都想去桂林。(but) 3.没有人不同情那些嗷嗷待哺的孩子。(but) 4.我们班上没有一个人不想帮你。(but) 5.无论多么荒凉,多么难以行走的地方,人们也能把它变成战畅(but)6.这件事情比想象的要复杂。(than) 7.这个广告的效果比预想的要好。(than) 8.这个问题看起来容易,实际上很难。(than) 9.他爸妈给他的零用钱总是超过他的需要。(than) 10.因为这项工程非常困难,所以需要投入更多的劳动力。(than) 答案: 1.There is no one but likes to be praised. 2.There is no one of us but wishes to visit Guilin. 3.There is no man but feels pity for those starving children.4.There is no one in our class but wants to help you. 5.There is no country so wild and difficult but will be made a theatre of war. 6.This matter is more complex than is imagined. 7.This advertisement is more affective than is expected. 8.The problem may be more difficult in nature than would appear.9.He got more pocket money from his parents than was demanded.

keep用法

?keep at 1.坚持做…:继续某项工作或行为 ?keep down 1.压制,镇压:阻止…成长、完成或成功 Keep down prices; keep the revolutionaries down. 控制物价;镇压革命 ?keep off 躲开,避开 ?keep to 1.坚持,信守Keep to the original purpose.遵守原定宗旨 ?keep up 1.保持良好状态Kept up the property保存财产 2.保持;继续We asked her to stop talking, but she kept up. 我们请她别再说话了,但她依旧说下去 3.并行:按相同的水平或步伐继续下去 4.不落后,赶得上:赶上对手、同事或邻居,指在成就或生活方式上 Unsuccessfully tried to keep up with his associates.没能赶上他的同事们 ?you can't keep a good man (或woman) down (非正式)有能力的人是不会被挫折或问题吓倒 ?keep one's feet 站稳,不倒 ?keep goal (主英足)守球门 ?keep going (困难时)努力维持正常生活 ?keep open house 好客 ?keep to oneself 避开与人接触,独处 ?keep something to oneself 守口如瓶 ?keep up with the Joneses 与人攀比 ?keep wicket (板球)守板球门 ?keep someone after (美)(作为对小学生的惩罚)放学后留校

before句型辨析与解析

before句型辨析与解析 It + will be + 时间段+ before等表示“在……之后……才”的句型总结 一、用于句型“It + will be + 时间段+ before...”句型中,表示“要过多久才…”,也可用于“It + may be + 时间段+ before...”,表示“也许要过多久才……”。Before 后的句子中用一般现在时态。 其否定形式“It will/would not be +时间段+ before…”表示“不久就……,过不了多久就……”。 (1)The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again. A. after B. before C. since D. when (2)—How long do you think it will be ______China sends a manned spaceship to the moon? —Perhaps two or three years. A. when B. until C. that D. before (3)It ________ long before we _______ the result of the experiment. A. will not be...will know B. is...will know C. will not be...know D. is...know (4) Scientists say it may be five or six years_________ it is possible to test this medicine on human patients. A. since B. after C. before D. when 解析:答案为BDCC。考题 (1)(2)before 用于肯定的“It + will be + 时间段+ before...”句型中,表示“要过多久…才…”。 (3)before在本题中用于否定句,意为“过不了多久就会……”, 状语从句要用一般现在时代替一般将来时,可知C项为正确答案,句意是:要不了多久我们就会知道试验的结果了。 (4)宾语从句中含有句型“It + may be + 时间段+ before...”,表示“也许要过多久才……”,故选择答案C。 二、用于句型“it was +时间段+ before …” 表示“过了(多长时间)才……”。其否定形式“ it was not +时间段+ before …” 意为“不久就……”, “没过(多长时间)就……”。 It was some time ___________we realized the truth. A. when B. until C. since D. before 解析:答案为D。before用于句型“it was +时间段+ before …” 表示“过了(多长时间)才……”。该题题意是“过了一段时间我们才意识到事情的真相”。故正确答案为C项。 表示“在……之后……才”。副词“才”在汉语中强调某事发生得晚或慢。如果在含有before从句的复合句中,强调从句动作发生得晚或慢时,就可以应用这种译法。 The American Civil War lasted four years _______ the North won in the end. A. after B. before C. when D. then 解析:答案为B。本题考查连词before表示“在……之后才……”之的用法,根据本句含义“美国南北战争持续了四年,北方才最终取得胜利”,可知本题应选B。 三、表示“……还没来得及……就……”。目的在于强调从句动作发生之前,主句动作已发生。 —Why didn't you tell him about the meeting? — He rushed out of the room _________ I could say a word. A. before B. until C. when D. after 解析:答案为A。本题考查连词before表示“……还没来得及……就……”的用法。句意是“我还没来得及说一句话,他就冲出了房间”。 四、表示“在……之前就……”。这时主句与before从句中的两个动作按时间先后依次发生。 It was evening______ we reached the little town of Winchester. A. that B. until C. since D. before 解析:答案为D。本题考查连词before表示“在……之前就……”的用法。句意是“我们到达小镇Winchester 之前就已经是傍晚时分了”。 五、表示“趁……”,“等到……”,或“没等……就…… ”等。

相关文档
最新文档