can的用法小结

can的用法小结
can的用法小结

一、基本用法1. 表示能力(如体力和脑力方面),意为“能;会”等。例如:Can you sp eak English? 你会讲英语吗?Can you play the piano? 你会弹钢琴吗?

2. 表示请求或允许,多用在口语中,意为“可以;能”等。用于疑问句中用来提出要求,用于否定句表示不允许。例如:Can I help you? 我能帮助你吗?You can’t play basketball. 你不能玩篮球。Can you...?“请你……好吗?”表示说话人的请求;Can I...?“我可以……吗?”用来征求对方是否允许自己做某事。如在句末加上please一词就显得更有礼貌了。例如:Can you help me, please? 请你帮助我好吗?

3. 表示可能。例如:He can be at home now. 他现在可能在家。The moon can’t alwa ys be full. 月亮不可能常圆。

4. 表示怀疑。在表达此意时,只能用于一般疑问句中,带有感情色彩。例如:Can it be true? 那会是真的吗?

二、句式变化如下:1. 在变否定句时,直接在can后加上“not”,可缩写成can’t或cannot,但不能写成cann’t。例如:He can swim. → He can’t swim. Emma can see the pen on the desk.→ Emma cannot see the pen on the desk.

2. 在变一般疑问句时,直接移到主语前(原主语的首字母改成小写,第一人称应变为第二人称)即可。例如:I can see an orange on the table. → Can you see an orange on the table? 其回答可用Yes, OK或Certainly等作肯定回答;用No或Sorry等作否定回答。例如:—Can you look after my books, please? 你能照看一下我的书吗?—OK. 可以。用Cer tainly回答。此时语气更为肯定。例如:—Can I see your guitar? 我能看看你的吉它吗?—Certainly. 当然可以。[特别提醒] can与may都可以表示“许可”。在征求对方意见时用m ay较多。例如:May I go now? 现在我可以走吗?在询问客观上是否可以时,can则当仁不让。例如:Can we take the books out? 我们能把这些书拿出去吗?在两者都可以用时,may显得客气一些。例如:May I take this seat? 比Can I take this seat? 稍婉转一点。在陈述句中用我较多。例如:You can sit here. 你可以坐在这里。can还可以表示能力,而may则无此用法。

动名词的用法

动名词的用法及练习 你听过英文语法有动词(verb)、名词(noun);但你听过有动名词(gerund)吗 1. The girl is singing a song. 2. The girl singing now is my sister. 3. Singing is one of her hobbies(爱好). 一、名词性的动名词(Nominal Gerund) Nominal Gerund 可以加上定冠词(Definite article,如the)或不定冠词(Indefinite article,如a, an),其他可加在动名词前的还有如:my, this, some, any, all, no 等等。举例如下: 1. The mellow(愉快地) singing of the birds announces the coming of spring. (singing前加定冠词the及形容词mellow;coming 前加the) 2. We knew the robber was near when we heard a faint rustling(沙沙声) in the bushes. (rustling 前加不定冠词a及形容词faint) 从上面的例子可看出如何将一个动词转成名词;但它和真正的名词还是有区别的,那就是没有单数或复数之分。不过,有一些动名词是可以变成真正名词的喔,如:saying, writing, opening, painting, cutting, heading, feeling, being,saving, surrounding, crossing, misunderstanding 等等。它们都可以有复数的喔,方法就是在它们的后面加个s,如:paintings。 二、动词性的动名词(Verbal Gerund) 看看下面的句子: Carelessly writing essays annoys the teacher. 上面的句子里的writing是动名词,但前面有副词carelessly(粗心地),后面又有受词(Object) essays。因此writing就有动词的特征。 注意:Verbal Gerund 这类动名词的前面可不能加上任何冠词(the, a, an ...)喔。 动名词的功能与用法 一、在句子中用作主语(Subject)或主语的补语(Subject Complement): 作主语 1. Listening to music gives me pleasure. (主语Listening ) 2. Running is good exercise. (主语running) 3. Walking to school is a good idea. (主语walking) 作主语的补语 1. My cat's favorite activity is sleeping. (补语sleeping) 2. Seeing is believing. (主语seeing, 补语believing) 主语置于句尾用It + be + ... +v-ing 句型 1. It is fun speaking English. 2. It is of great importance fighting against pollution(污染). 用It is 后接no use. no good, fun 等的句型 1. It is no use learning theory without practice. 2. It is no fun being lost in rain. 用It is 后接useless, nice, good, interesting, worthwhile 等的句型 1. It is worthwhile taking this into consideration. 用There + be + no + v-ing 的句型 1. There is no joking about such matters. 2. There is no getting along with him. (简直无法与他相处) 二、动名词也可以作宾语(Object) 作动词/动词短语的宾语(置于动词或动词短语的后面) 1. I cannot help laughing. (我禁不住笑了起来)(宾语laughing) 2. You should avoid quarrelling with your sister. (宾语quarrelling) 3. You should practice speaking English more. (宾语speaking) 注意:上面三个句子中的动词:help, avoid, practice 只能用动名词作宾语。这类动词还有:dislike 厌恶admit 接受repent 后悔acknowledge 承认

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。

when的用法总结大全

when的用法总结大全 when的用法你知道多少,今天给大家带来when的用法,希望能够帮助到大家,下面就和大家分享,来欣赏一下吧。 when的用法总结大全 when的意思 adv. 什么时候,(用于时间的表达方式之后)在那时,其时,当时conj. 在…时,既然,如果 pron. 什么时候,那时 n. 时间,时候,日期,场合 when用法 when可以用作副词 when的基本意思是“什么时候”。可用作疑问副词,用来询问某事曾发生或将要发生的时间,引导特殊疑问句; 还可用作关系副词引导限制性定语从句、非限制性定语从句和表语从句,表示“是…时候的事”。 when可用作从属连词,引导状语从句,表示时间时作“当…时,在…的时候”解; 表示条件时作“如果,要是”解; 表示对比时作“既

然,考虑到”解。当when所引导的从句的主语和主句的主语一致时,常将其主语、系动词或助动词省去,只留实义动词或表语,或者改写为短语。 when所引导的时间状语从句用一般现在时代替将来时,用现在完成时代替将来完成时。 when用作副词的用法例句 When did that happen?那件事是什么时候发生的? They stood respectfully when he entered the room.当他走进房间时,他们都恭恭敬敬地站着。 Iron will melt when it is made very hot.当铁烧得很热时就会熔化的。 when可以用作连词 when可用作从属连词,引导状语从句,表示时间时作“当…时,在…的时候”解; 表示条件时作“如果,要是”解; 表示对比时作“既然,考虑到”解。当when所引导的从句的主语和主句的主语一致时,常将其主语、系动词或助动词省去,只留实义动词或表语,或者改写为短语。 when所引导的时间状语从句用一般现在时代替将来时,用现在完成时代替将来完成时。

英语16种时态表

精心整理|?英语16种时态表 英语时态表 英语时态表 时态 名称 结构常连用的词主要用法例句 一般现在时1由be的 isamare表 示,之后接名 词,形容词或 介词。 every…, sometime s, always,ne ver, often,usu ally等。 一般现在时表示没有时 限的持久存在的习惯性 的动作或状态,或现阶段 反复发生的动作或状态 陈述句:Iamanofficeworker. Heissolazy. Theyareathome 否定句:IamnotTim. Sheisnotverybeauiful. Theyarenotintheoffice. 一般疑问句:Areyouanofficea Isshebeautiful? 2由实意动词 V构成,引导 疑问句和否定 句,用do或 don’t。第三 陈述句:IworkinShanghai. Heworksathome. DavyneverwatchesTVathome

人称时用does或doesn’t,有does出现动词用原形;第三人称陈述句V后加s或es. 否定句:Idon’tlikethefoodinK Davydoesn’tlikethefoodinK 一般疑问句: Doyouwantacupofcoffee?Do ubwaystation? 一般过去时。1由be的过 去式是was或 were表示。 Is\am---was; are---were. ? yesterday , lastweek, anhourag o, thedaybe foreyesterday , in1997。 在过去时间里所发生的 动作或存在的状态。 陈述句:Iwasabigboss.Hewa WewereinBeijinglastyear. 否定句:Iwasnotathomeatthat Wewerenotatworkyesterday 一般疑问句:Wereyouateacher Wassheintheofficelastweek? 2由V的过去 式构成陈述 句,疑问句和 否定句用借助 于did,有did 出现动词用原 陈述句:IworkedinSunmoon WestudiedEnglishthere.Heliv 否定句:Ididn’tworkhere. Theydidn’tseeme.ShelikedE

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)

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. )

when-的用法

when 的用法 一、when 用作副词。 1. 用作疑问副词,引导特殊疑问句。(什么时候,何时 [at what time ])例如: ①When will you come to see me? ②When are they going to visit the Great Wall? 2. 用作连接副词,通常用来引导名词性从句[主语从句、表语从句、同位语从句、宾语从句]及起名词作用的“when +动词不定式”结构。(什么时候,何时 [at which; on which ])例如: ①When he comes is not known. [主语从句] ②The morning is when I am busiest. [表语从句] ④I don't know when the plane takes off. [宾语从句] ⑤I don't know when to leave for London. [宾语] 3. 用作关系副词,引导限定性定语从句和非限定性定语从句。(在…的时候 [at/on/in/during which])例如: ①Do you still remember the days when we stayed in America? ②The day will come soon when the Chinese astronauts will go to the moon. ③It happened ten years ago, when I was a child. ④We will go to the countryside at the beginning of June, when the summer harvest will start. 二 . when 用作连词。 1. 用作从属连词,意为“当……的时候[at the time when ]”,引导时间状语从句。例如: ①They learned a lot from the peasants when they stayed in the village. ②It was snowing when he arrived at the station. 【点津】如果 when 引导的从句中的主语和主句中的主语一致,且从句中的谓语动词是“be +分词”或从句主语是 it ,则 be 动词及其主语常可省略。例如: ③When( he was )asked why he was late, he made no answer. ④I'll tell him about it when( it is )possible. 2. 用作从属连词,意为“一……就……”,引导时间状语从句。[immediately after]例如: ①We will stand up when the teacher comes into the classroom. 老师一进教室我们就起立。 ②Fire the rockets when I give the signal. 3. 用作从属连词,意为“还没 / 刚刚/刚一……就”,引导时间状语从句。[immediately after]例如: ①I had hardly opened the door when he came in. 我刚一开门,他就进来了。 ②I had not been reading for half an hour when I heard someone call my name. 【点津】hardly…when和no sooner…than的结构要注意三点:意思为“一A就B“;A句通常用完成时态;hardly 和 no sooner 位于句首时要注意部分倒装。 4. 用作从属连词,意为“倘若,如果”,表示条件。例如: ①Turn off the switch when anything goes wrong with the machine. 如果机器发生故障,就把电源关上。 ②He will be likely to recover when he is operated on. 5. 用作从属连词,意为“既然,尽管”,表示让步。例如: ①Why use metal when you can use plastic?既然能用塑料,为什么用金属? ②They kept trying when they knew it was hopeless. 尽管他们知道那件事没有希望,可是他们还在不断地努力。6. 用作并列连词,意为“在那时,届时;就在这时”,表示时间。这时主句中可以用过去进行时,过去完成时或“ was/were about to do sth. ”结构。 ①Last night I was about to go to bed when the phone rang. ②I was cooking in the kitchen when someone knocked at the door. ③He had just finished the book when supper was served. 7. 用作并列连词,意为“虽然、然而、可是”,表示转折。例如: ①He usually walks to work when he might take a bus. 虽然他可 以坐公共汽车上班,但他却常常步行上班。 ②I had only twenty dollars when I needed thirty to buy the dictionary.我需要 30 美元买那本字典,可是我只有20美元。 8. 用作并列连词,意为“而、却”,表示对比。例如: How can he say that everything is fine when it's obvious that it is not? 他怎能说一切都好呢?情况显然不是那样。 三 . when 用作代词[which time]。 when 作为代词常常位于介词之后,意为“那时,什么时候”。例如: ①Since when have you been studying Japanese? 【点津】since when 作引导词时是“介词(since)+关系代词(when)”的结构,when意为which time。since when常引导非限制性定语从句,从句应用完成时态。 ②I came here in 1949, since when I have been engaged in this work. 我1949年到这里,从那时起我就担任这项工作。 ③We came back on Tuesday, since when we have been working in the repair shop. ④We came a week ago, since when the weather has been bad. 四、when 还可用作名词,前面常常用定冠词 the。 the when 表示事 件发生的时间,常常与 the where, the how 并列使用。 He told the police the when and the how of the accident. 他告 诉警察事故发生的时间及发生的原委。 [巩固练习] 1. I remember ______ this used to be a quiet village. A. when B. how C. where D. what 2. Why do you want a new job _____ you've got such a good one already? A. that B. where C. which D. when 3. It was an exciting moment for these football fans this year, ______ for the first time in years their team won the World Cup. A. that B. while C. which D. when 4. We are living in an age _______ many things are done on computer. A. which B. that C. where D. when 5. The reporter said that the UFO ______ east to west when he saw it. A. was travelling B. travelled C. had been travelling D. was to travel 6. ______ got into the room _________ the telephone rang. A. He hardly had; then B. Hardly had he; when C. He had not; than D. Not had he; when 7. ---- Can I join your club, Dad? ---- You can when you _______ a bit older. A. get B. will got C. are getting D. will have got 8. I shall never forget those days ________ I lived in the countryside with the farmers, ________ had a great effect on my life. A. that; which B. when; which C. which; that D. when; who 9. The film brought the hours back to me ______ I was taken good care of in that faraway village. A. until B. that C. when D. where 10. He was about to tell me the secret ______ someone patted him on the shoulder.

与than有关短语的用法例析

与than有关短语的用法例析 一、more than的用法 1. “more than+名词”表示“不仅仅是” Modern science is more than a large amount of information. 现代科学不仅仅是大量的信息。 Jack is more than a teacher, he is a writer, too. 杰克不仅是一位教师,而且也是个作家。 We need more than material wealth to build our country. 建设我们国家,不仅仅需要物质财富. 2. “More than+数词”含“以上”或“不止”之意,如: I have known David for more than 20 years. 我认识大卫不止20年了。 More than one person has made this suggestion. 不止一人提过这个建议. 3. “More than+形容词”等于“很”或“非常”的意思,如: In doing scientific experiments, every student must be more than careful with the instruments. 在做科学实验时,每个学生必须非常小心地(使用)仪器。 I tell you that I am more than glad to help you. 我告诉你:我很高兴帮助你。 4. more than + (that)从句,其基本意义是“超过(=over)”,但可译成“简直不”“远非” “难以,完全不能(其后通常连用情态动词can)”,如: That is more than I can understand. 那非我所能懂的。 That is more than I can tell. 那事我实在不明白。 The heat there was more than he could stand. 那儿的炎热程度是他所不能忍受的 5. “more than”也在一些惯用语中出现,如: More often than not, people tend to pay attention to what they can take rather than what they can give. 经常,人们更关注他们所获得的,而不是他们所给予的。 All of us are more than a little concerned about the current economic problems. 我们中所有人非常关心目前的经济问题。 二、more...than 的用法 1. 比……多,比……更 He has more books than me. 他的书比我多。 He is more careful than the others. 他比其他人更仔细。 2. 与其……不如 He is more lucky than clever. 与其说他聪明,不如说他幸运。 He is more (a) scholar than (a) teacher. 与其说他是位教师,不如说他是位学者。 【注意】:该句型主要用于同一个人或物在两个不同性质或特征等方面的比较,其中的比较级必须用加more 的形式,不能用加词尾-er的形式。 三、no more than 与not more than 1. no more than 的意思是“仅仅”“只有”“最多不超过”,强调少。如: This test takes no more than thirty minutes. 这个测验只要30分钟。 The pub was no more than half full. 该酒吧的上座率最多不超过五成。 For thirty years,he had done no more than he (had) needed to. 30年来,他只干了他需要干的工作。

常见介词用法

常见介词用法: 1)at,in,on在……范围 at(1)表示在小地方;(2)表示“在……附近,旁边” in(1)表示在大地方;(2)表示“在…范围之内”。 on表示毗邻,接壤 to表示在……范围外,不强调是否接壤Hearrivedatthestationatt en. Heissittingatthedesk. HearrivedinShanghaiyes terday. JiangsuliesintheeastofCh ina. RussialiveonthenorthofC hina. FujianistothesouthofJian gsuProvince. 2)above,over,on在……上 above指在……上方,不强 调是否垂直,与below相 对; over指垂直的上方,与 under相对,但over与物体 有一定的空间,不直接接 触。 on表示某物体上面并与之 接触。 Thebirdisflyingabovemy head. Thereisabridgeovertheri ver. Heputhiswatchonthe 3)below,under在……下面 under表示在…正下方 below表示在……下,不一 定在正下方 Thereisacatunderthetabl e. Pleasewriteyournamebel owtheline. 介词短语组织形式及实例: 一、介词+名词形式 第一组 byaccident偶然 onaccountof因为,由于 inaddition另外 inadditionto除……之外 intheair在流行中,在传播 中

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:

英语语法——rather_than用法小结

have sth. done,have sb. do , have sb./sth. doing与have sth. to do 四种 句型的区别 一、Have sth. done可表示四种不同的语法意义 (1)(主语)请/派别人完成某事。 例:①I had(=got) that door painted last week.上星期我请人把那扇门做了油漆。 ②I had(=got) my teeth filled yesterday afternoon.昨天下午我请人补了牙。(2)(主语)完成某事(可能参与)。 例:①they are going to have (=got) some threes planted.他们打算植些树。 ②we must have (=got) the work finished by Tuesday.我们必须在星期二以前完 成此项工作。 (3)(主语)遭受某种不幸的情况。 例:①I had my hat blown off.我的帽子被(风)吹掉了。 ②I had my leg broken when I got off the bus.下车时我的腿子摔断了。 (4) 用于否定句中,表示“不允许….”“不让”。 例:①I won’t have anything said against her.我不会允许有任何反对她的言论。 ②I won’t have my house turned into a hotel.不不会让我的房子变成一个旅馆。 二、have sb. do表示四种含意 (1)(主语)请/派别人完成某事。可以用“get sb. to do”结构来替换。 例:①I had him repair my bike. (=I got him to repair my bike.)我请他修理自行车。 ②Don’t forget to have him come.别忘了叫他来。 (2)表示主语无意识的行为,这时“have”作“有”解。 例:These small animals seem glad to have people visit them. (3)表示主语“经历”某事。 例:He had his mother die.他遭丧母。 (4)在否定句中作“容忍”“允许”解。 例:I won’t have you say such things about her.我不允许你说她这样的话。 三、have sb./sth. doing 表示两种含意或者说一种含意。 (1)在肯定句中常表示“让某人做某事”,“让某情况发生”之意,含有动作正在进行之意。 例:①he soon had them all laughing. 他很快让他们都笑了起来。 ②I have a car waiting for me. 我让一部车在等我。 (2)在否定结构中,表示“不能让”,“不允许”。 例:we can’t have that sort of thing happening.我们不能让那类事情发生。 四、have sth. to do表示“有某事要完成”,其中不定式作定语,且其有主动与被动二种形式需要区别使用。 (1)如果不定式的动作由主语来完成需其用主动形式。 例:①I have some letters to write.我有几封信要写。 ②He have a large family to support.他有一大家人要养活。 (2)如果不定式的动作不是由主语来完成需用其被动形式。 例:“Do you have any clothes to be washed today?”the servant asked.佣人问道:“你今天有没有衣服要(我)洗?”

常见介词用法

常见介词用法 集团文件发布号:(9816-UATWW-MWUB-WUNN-INNUL-DQQTY-

常见介词用法: 1)at,in,on在……范围 at(1)表示在小地方;(2)表示“在……附近,旁边” in(1)表示在大地方;(2)表示“在…范围之内”。 on表示毗邻,接壤 to表示在……范围外,不强调是否接壤Hearrivedatthestati onatten. Heissittingatthedes k. HearrivedinShanghai yesterday. Jiangsuliesintheeas tofChina. Russialiveonthenort hofChina. Fujianistothesoutho fJiangsuProvince. 2)above,over,on 在……上 above指在……上方, 不强调是否垂直,与 below相对; over指垂直的上方, 与under相对,但 over与物体有一定的 空间,不直接接触。 on表示某物体上面并 与之接触。 Thebirdisflyingabov emyhead. Thereisabridgeovert heriver. Heputhiswatchonthe 3)below,under 在……下面 under表示在…正下 方 below表示在…… 下,不一定在正下方 Thereisacatunderthe table. Pleasewriteyourname belowtheline. 介词短语组织形式及 实例: 一、介词+名词形式

第一组 byaccident偶然onaccountof因为,由于 inaddition另外inadditionto除……之外 intheair在流行中,在传播中 on(the/an)average 平均,一般来说onthebasisof根据,在……的基础上 at(the)best充其量,至多forthebetter好转,改善onboard在船(车、飞 机)上 outofbreath喘不过 气来 onbusiness因公,因 事 inanycase无论如 何,总之 incaseof假使,万一 incase假如,以防 (万一)免得 innocase决不 第二组 bychance偶然,碰巧 incharge(of)负责, 主管 (a)roundtheclock昼 夜不停地 incommon共用,共 有,共同 inconclusion最后, 总之 onconditionthat 在……条件下 inconfidence信任 inconnectionwith/to 关于 inconsequence因 此,结果 inconsequenceof由 于……的缘故 onthecontrary反 之,正相反 incontrastwith/to 与……成对照 outofcontrol失去控 制

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。

连词when的用法

一、作为副词,它有以下的用法: 1. 作为疑问副词,引导特殊疑问句,意为“什么时候;何时”。 (1 )When will they come back? (2 )What time will they come back? 回答when 引导的从句,不一定指出具体的时间点。如回答句( 1 )可用tomorrow,next month 等。而回答what time 引导的问句,则必须说出具全的时间点,如at two o'clock,at five past ten 等。 2. 作连接副词,引导名词性从句或不定式,意为“什么时候”。从句使用陈述句语序,时态根据实际情况而定。 (1 )I'd like to know when they will come. 我想知道他们什么时候来。(when 引导宾语从句) (2 )Can you tell me when the bank opens?你能告诉我银行什么时候开门吗?(when 引导宾语从句) (3 )When she'll be back depends much on the weather. 她何时回来在很大程度上取决于天气。(when 引导主语从句) (4 )Have you decided when to go sightseeing?你们已经决定什么时候去郊游了吗?(when 引导不定式结构) 3. 作疑问代词,常和介词since,till,up to 等连用,意为“什么时候”。 如:(1 )Since when have they had the house?他们从什么时候起有这幢房子的?(2 )Till when is the library open?图书馆开放到几点呢? 4. 作关系副词,引导限制性定语从句和非限制性定语从句。 (1 )The days are gone forever when the Chinese people were looked down upon. 中国人民被人轻视的日子一去不复返了。 (2 )The main school holidays are from mid-December till early February,when the days are long and warm. 学校的主要假期是从12 月中旬到2 月初,这段时间里白天长而且很温暖。 (3 )Considering (the time)when these paintings were done,they are in excellent condition. 考虑到这些油画的创作时期,它们保存的状况是极好的。 (4 )Do you remember (the time)when the three of us went on a picnic?你还记得我们三个人去野餐的那段时光吗? A. 在定语从句中,that 在某些条件下可用来代替when ,这时其先行词通常是time,

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