动词和介词的语法 全部 在线等动词和介词的语法 所有的 在线等

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动词和介词的语法   全部   在线等动词和介词的语法   所有的   在线等

动词和介词的语法 全部 在线等动词和介词的语法 所有的 在线等
动词和介词的语法 全部 在线等
动词和介词的语法 所有的 在线等

动词和介词的语法 全部 在线等动词和介词的语法 所有的 在线等
动词
1) 表示动作中状态的词叫做动词.
2) 根据其在句中的功能,动词可分为四类,分别是:实义动词(Notional Verb)、系动词(Link Verb)、助动词(Auxiliary Verb)、情态动词(Modal Verb).
说明:有些情况下,有些动词是兼类词,例如:
We are having a meeting. 我们正在开会. (having是实义动词.)
He has gone to New York. 他已去纽约.(has是助动词.)
3) 动词根据其后是否带有宾语,可分为两类,分别是:及物动词(Transitive Verb)、不及物动词(Intransitive Verb),缩写形式分别为vt. 和vi..
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英语动词是句子的核心.它既决定着句子意思的表达同时又决定着句子的语法结构.难怪有人说,英语是动词和介词的语言.可见研究动词的用法在英语学习中是十分重要的.
(一、) 分清及物不及物:
分清动词的及物不及物是在英语学习中必须解决的首要问题.动词及物与不及物通常有以下几种情况:
a.主要用作及物动词.及物动词后面必须跟宾语.可以用于:"主+谓+宾";"主+谓+双宾";"主+谓+宾+宾补"结构.如:
He reached Paris the day before yesterday.
Please hand me the book over there.
They asked me to go fishing with them.
类似的还有:buy, catch, invent, found, like, observe, offer, prevent, promise, raise, find, forget, receive, regard, see, say, seat, supply, select, suppose, show, make, take, tell.
b.主要用作不及物的动词.不及物动词后面不跟宾语.只能用与:"主+谓"结构.
This is the room where I once lived.
类似的还有:agree, go, work, listen, look, come, die, belong, fall, exist, rise, arrive, sit, sail, hurry, fail, succeed.
c.既可以用作及物又可以用作不及物的动词,其意义不变.如begin 都是作"开始"讲.everybody , our game begins. let us begin our game. 类似的还有:start, answer, sing, close, consider, insist, read, learn, prepare, pay, hurt, improve.
d.既可以用作及物又可以用作不及物的动词,其意义完全不同.
这类动词作不及物动词是一个意义;而作及物动词时却是另一个意义.如lift作不及物动词时是指烟雾的"消散".we saw the mountain when the clouds lifted. 作及物动词时是"升高;举起".
He lifted his glass and drank.
类似的还有:beat vi.跳动 vt. 敲、打; grow vi.生长 vt. 种植 play vi.玩耍 vt. 打(牌、球),演奏 smell vi.发出(气味) vt. 嗅 ring vi.(电话、铃)响vt.打电话 speak vi.讲话 vt. 说(语言) hang vi. 悬挂 vt. 绞死 operate vi.动手术 vt. 操作
(二、) 辨别表动作与表结果的动词
表动作的动词强调动作的发生,不涉及该动词的结果.如:
He looked at the picture. He saw a picture .
前一句中的动词强调"看"这一动作;而后一句中的动词表示"看到"这一结果.类似的还有:tear at; tear, look for; find, try to do sth.; manage to do sth., prepare for; be prepared for, advise; persuade 等.
(三) 记住瞬间动词
英语中不少动词所表示的动作在瞬间就可以完成.如:
He arrived in paris yesterday.
而另一些动词所表示的动作则可以延续.如:
They worked until 12 o'clock last night.
特别是在现在完成时态的句子中,瞬间动词的完成时态不能跟表示一段时间的时间状语连用.瞬间动词有:arrive, borrow, buy, close, fall, finish, go, join, kill, hit, leave, lend, die, marry, open, reach, return, start, stop, recognize.等.
(四、) 掌握好表状态的连系动词与表变化的连系动词
英语中的连系动词主要分为两大类:
a.表状态的连系动词.如:he is a good worker. 除了be 而外,还有:stand(位于),lie(位于),stay, have, consist of, belong to, exist, weigh, own.等.
b.另一类连系动词表示动作或变化,是由行为动词转化而来的.一般在这些连系动词后跟形容词作表语如:his hair grows grey. 这类连系动词还有: turn, become, taste, smell, sound, look, feel, get...等.
(五、) 注意词义相近,用法不同的动词
a.表主观与客观的动词
I received his invitation last night, but i didn't want to accept it.
该句中,动词receive, accept 都表示"接受"但前者表示客观地接收到什么东西;后者表示 "I" 的主观意愿.类似用法的动词还有:listen to; hear, look at; see, must; have to等.
b.表直接与间接的动词
He heard that the scientist would come to our school.
He heard of the news that the scientist would come to our school.
前句中hear的表示直接听说的,而后一句中hear of 的表示间接听说的.类似用法的动词还有:know; know of, speak; speak of, talk; talk of等.
(六、) 重视多字动词的用法
所谓多字动词是指动词与某些副词、介词构成的动词词组.一般有四种形式:
a."动词+介词"结构. 该结构中的动词是不及物动词,当和一些介词搭配后,则把它看成一个整体,即把它看成一个及物动词.如:
We never thought of such success when we first started.
类似用法的还有:agree to, ask for, attention to, break into, call upon, deal with, laugh at, dream of, listen to, look at, operate on, talk about, rely on, refer to...
b."动词+副词"结构.该结构中的动词是及物动词的,该结构及物;是不及物的,则不及物.如:
We put off the sports meet.
After he grew up, he went to london to work for a company.
类似用法的还有: bring about, bring up, call up, carry out, find out, give up, hand in, help out, look up, make out, pass on, point out, put away, put down, put away, put down, put off, put on, ring up, set up, take up, think over, turn down, use up, work out..., wake up, shut up, come about, break out, carry on, come up, fall over, get away, get back, look out, go up, go out, stay up.
在这类结构中,必须注意有的多字动词即及物又可不及物.有的甚至汉语意义也完全不相同.如:
He looked up and saw his teacher in front of him. (vi. 抬起头看)
He looked up the word in the dictionary. (vt. 查找)
类似的有break down vi.(车等)坏了 vt. 分解,分为 ;
go over vi. 走过去 vt. 复习,仔细查看等.
c."动词+副词+介词"结构.如:
We should do away with that sort of thing.
类似的有:give in to, catch up with, look down upon, make up for, put up with.
d."动词+名词+介词"结构.该结构是最多,最常见的多字动词.如:
We will take care of them.
类似的有:catch sight of, keep an eye on, make use of, make a fool of, make fun of, make room for, make sure of, knock out of, have a word with, pay attention to, put an end to, set fire to, take advantage of, take hold of, take note of, take notice of, take part in, take pride in, take possession of, play a trick on, play a part in.
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说明:同一动词有时可用作及物动词,有时可用作不及物动词.例如:
She can dance and sing.
她能唱歌又能跳舞.(sing在此用作不及物动词.)
She can sing many English songs.
她能唱好多首英文歌曲.(sing用作及物动词.)
4) 根据是否受主语的人称和数的限制,可分两类,分别是:限定动词(Finite Verb)、非限定动词(Non-finite Verb)例如:
She sings very well.
她唱得很好.(sing受主语she的限制,故用第三人称单数形式sings.)
She wants to learn English well.
她想学好英语.(to learn不受主语she的限制,没有词形变化,是非限定动词.
说明:英语中共有三种非限定动词,分别是:动词不定式(Infinitive)、动名词(Gerund)、分词(Participle).
5) 根据动词的组成形式,可分为三类,分别是:单字词(One-Word Verb)、短语动词(Phrasal Verb)、动词短语(Verbal Phrase)例如:
The English language contains many phrasal verbs and verbal phrases.
英语里有许多短语动词和动词短语.(contains是单字动词.)
Students should learn to look up new words in dictionaries.
学生们学会查字典.(look up是短语动词.)
The young ought to take care of the old.
年轻人应照料老人.(take care of是动词短语.)
6)动词有五种形态,分别是:原形(Original Form)、第三人称单数形式(Singular From in Third Personal)、过去式(Past Form)、过去分词(Past Participle)、现在分词(Present Participle).
7) 及物动词不需要介词
在英语错误中,"及物动词+介词+宾语"(transitive verb+preposition+object),是常见的一种.所谓及物动词,就是谓语动词(predicative verb),不必通过介词引荐宾语.相反的,不及物动词(intransitive verb)是不带宾语的.有许多动词,虽然性质是及物的,但不一定要有宾语,如下列的①a和②a便是这种情形:
①a. We study every day. b. Do you study English every day.
②a. Please write clearly next time.b. Can you write your composition now?
如果本质上就是不及物动词,就不会有宾语;若要宾语,就要借介词之助,一起连用才行,如③b和④b;③a和④a是错的;
*③a. The children are listening the music. b. The children are listening to the music.
*④a. She is laughing the crippled man. b. She is laughing at the crippled man.
反之,及物动词不必靠介词,就可以带宾语,如上述的①b和②b ,又如⑤和 ⑥:
⑤ John is giving a book to me.⑥ Who will answer this question?
如果无意中把介词加上,就错了,如: *⑦ Who will answer to this question?
下列这句从房地产广告中看到的句子,也犯了同样的错:
"We have many buyers awaiting for available units here."
"Awaiting"是个及物动词,后面的介词"for"是多余的,要去掉;不然把"awaiting"改为"waiting for"也行.
许多人习惯上喜欢把介词加到及物动词后面,然后才带出宾语.最常见的是"emphasize/stress on/upon"和"discuss about",如:
⑧ Singaporeans seem to have emphasized on material gains.
⑨ In our education system, we stress upon examination results.
⑩ World leaders spent a lot of time discussing about worsening economic problems.
显然的,这三句里的介词"on/upon"和"about"是多余的,不必要的.
下面是些类似的错误:
● The young must obey to their elders.
● Do not approach to that odd-looking man.
● The audience attacked on the rude speaker.
● Nothing can escape from his parents' eyes.
● Do you hope to serve for your nation?
● When did Susan marry with Paul?
介词"to, on, from, for, with"都要去掉才对.
为什么会有这些错误呢?主因是分不清楚及物动词和不及物动词的性质.其次,就是对同一个动词及其名词的句型有些混淆.解决之道有二.第一,要把"及物动词+宾语"和"不及物动词+介词+宾语"划分清楚,如:
 I did not answer him./ I did not reply to him.
 He reached Londan yesterday./ He arrived in London yesterday.
第二,把及物动词转化为名词,然后加上适当的介词和宾语,如:
 Don't approach such a person.
 Is oral practice a good approach to language teaching?
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1 系动词
系动词亦称联系动词(Link Verb),作为系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语(亦称补语),构成系表结构说明主语的状况、性质、特征等情况.
说明:
有些系动词又是实义动词,该动词表达实义时,有词义,可单独作谓语,例如:
He fell ill yesterday.
他昨天病了.(fell是系动词,后跟补足语,说明主语情况.)
He fell off the ladder.
他从梯子上摔下来.fell是实义动词,单独作谓语.
1)状态系动词
用来表示主语状态,只有be一词,例如:
He is a teacher. 他是一名教师.(is与补足语一起说明主语的身份.)
2)持续系动词
用来表示主语继续或保持一种状况或态度,主要有keep, rest, remain, stay, lie, stand, 例如:
He always kept silent at meeting. 他开会时总保持沉默.
This matter rests a mystery. 此事仍是一个谜.
3)表像系动词
用来表示"看起来像"这一概念,主要有seem, appear, look, 例如:
He looks tired. 他看起来很累.
He seems (to be) very sad. 他看起来很伤心.
4)感官系动词
感官系动词主要有feel, smell, sound, taste, 例如:
This kind of cloth feels very soft.
这种布手感很软.
This flower smells very sweet.
这朵花闻起来很香.
5)变化系动词
这些系动词表示主语变成什么样,变化系动词主要有become, grow, turn, fall, get, go, come, run.
例如:
He became mad after that. 自那之后,他疯了.
She grew rich within a short time. 她没多长时间就富了.
6)终止系动词
表示主语已终止动作,主要有prove, trun out, 表达"证实","变成"之意,例如:
The rumor proved false. 这谣言证实有假.
The search proved difficult. 搜查证实很难.
His plan turned out a success. 他的计划终于成功了.(turn out表终止性结果)
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怎样区分半连系动词
连系动词多有自己的意思,但不能独立作谓语,必须与表语(名词、形容词,或与之相当的词类、短语、从句)一起构成合成谓语.最常用的连系动词为be(是)动词,即完全连系动词,另外还有look,turn,feel,get,become,sound,smell,stand,go,remain等半连系动词.无论是完全连系动词还是半连系动词、后面都有表语.由于半连系动词是由实意动词变来的,那如何分辨该动词为实意动词还是半连系动词呢?这对初学英语的中学生来说会感到有点困难,我在教学中尝试用比较法和替换法,使学生较能接受.
1.比较法
比较下列各组句子
(1) A. Please look at the blackboard.请看黑板.
B. He looked a perfect fool.他看上去是个十足的傻瓜.
(2) A.Turn to Page 16.翻到 16页.
B.He turned traitor to his country.他背叛了祖国.
A.He felt it his duty to help others.
他认为帮助别人是自己的责任.
B.I felt very hungry after a long walk.
走了一段长路,我感到很饿.
A.Get me some ink.给我一些墨水.
B.Our motherland is getting stronger and stronger.
我们国家变得越来越强大了.
A.Such words do not become a scholar.
那样的话不像出自学者之口.
B.Some of the land became covered with water.
一些田地覆盖着水.
A.This black key on the piano won't sound.
这钢琴上的黑键按下去不响.
B. The story sounds interesting.
这故事听起来很有趣.
A.I am sure I smell gas.我肯定闻到了煤气味.
B.The flowers smell sweet.花朵散发芳香.
A.He was too weak to stand.他太虚弱,不能站立.
B.Holding the note in his hand,he stood there dumbfounded.他拿着钞票,站在那里,目瞪口呆.
A.He goes to school early every morning.
他每天早上很早上学.
B. They went mad.他们发狂了.
A. I remained 3 weeks in Paris.
我在巴黎逗留了三周.
B.He never remained satisfied with his success.
他从不满足于自己的成绩.
2.替换法
分析以上10组句子我们不难看出B组斜体动词均为连系动词,因为如果我们把动词 be(是)的适当形式替代斜体动词,句子能够成立,后面的成分即是表语.
(1)He was a perfect fool.
(2)He was a traitor to his country.
(3)I was very hungry after a long walk.
(4)Our motherland is stronger and stronger.
(5)Some of the land was covered with water.
(6)The story is interesting.
(7)The flowers are sweet.
(8)Holding the note in his hand,he was there dumbfounded.
(9)They were mad.
(10)He was never satisfied with his success.
反之,如果把 be(是)动词的适当形式替代 A组斜体动词,句子则不能成立,无法解释,A组动词均不为连系动词:
*(l)Please be at the blackboard.
*(2)Be to Pagel6.
*(3)He was if his duty to help others.
*(4)Be me some ink.
*(5)Such words are not a scholar.
*(6)The black key on the piano won't be.
*(7)I am sure I am gas.
*(8)He was too weak to be.
*(9)He is to school early every morning.
*(10)I was 3 weeks in Paris.
另外半连系动词是由实意动词变来的.所以把含有半连系动词的句子改为疑问句时,一定要用助动词.
例如:1. Do they look tired?
2.Has she got ready?
3.Did it become much more expensive to travel abroad?
不论完全连系动词或半连系动词,它们都有时态的变化,但有些半连系动词从形式上看像是现在进行时,实际上并不表示动作正在进行.而是表示"渐渐"的意思或表示一种感情色彩.
(1)It's getting warmer and warmer.
天渐渐暖和起来了.
(2)Are you feeling better now?
你现在好点了吗?
因为半连系动词本属于不及物动词,所以没有被动语态.
如不能说:* Good medicine is tasted bitter to the mouth.应说:
Good medicine tastes bitter to the mouth.良药苦口.
半连系动词的教学还是个较困难的问题,但在初学阶段用先比较,再替换的方法,还是能使学生掌握哪些实意动词可充当半连系动词,收到事半功倍的效果.
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2 什么是助动词
1)协助主要动词构成谓语动词词组的词叫助动词(Auxiliary Verb).被协助的动词称作主要动词(Main Verb).
助动词自身没有词义,不可单独使用,例如:
He doesn't like English. 他不喜欢英语.
(doesn't是助动词,无词义;like是主要动词,有词义)
2) 助动词协助主要动词完成以下功用,可以用来:
a. 表示时态,例如:
He is singing. 他在唱歌.
He has got married. 他已结婚.
b. 表示语态,例如:
He was sent to England. 他被派往英国.
c. 构成疑问句,例如:
Do you like college life? 你喜欢大学生活吗?
Did you study English before you came here? 你来这儿之前学过英语吗?
d. 与否定副词not合用,构成否定句,例如:
I don't like him. 我不喜欢他.
e. 加强语气,例如:
Do come to the party tomorrow evening. 明天晚上一定来参加晚会.
He did know that. 他的确知道那件事.
3) 最常用的助动词有:be, have, do, shall, will, should, would
3 助动词be的用法
1) be +现在分词,构成进行时态,例如:
They are having a meeting. 他们正在开会.
English is becoming more and more important. 英语现在越来越重要.
2) be + 过去分词,构成被动语态,例如:
The window was broken by Tom.. 窗户是汤姆打碎的.
English is taught throughout the world. 世界各地都教英语.
3) be + 动词不定式,可表示下列内容:
a. 表示最近、未来的计划或安排,例如:
He is to go to New York next week.. 他下周要去纽约.
We are to teach the freshpersons. 我们要教新生.
说明: 这种用法也可以说成是一种将来时态表达法.
b. 表示命令,例如:You are to explain this. 对此你要做出解释.
He is to come to the office this afternoon. 要他今天下午来办公室.
c. 征求意见,例如:How am I to answer him? 我该怎样答复他?
Who is to go there? 谁该去那儿呢?
d. 表示相约、商定,例如: We are to meet at the school gate at seven tomorrow morning. 我们明天早晨7点在校门口集合.
4 助动词have的用法
1)have +过去分词,构成完成时态,例如:
He has left for London. 他已去了伦敦.
By the end of last month, they had finished half of their work. 上月未为止,他们已经完成工作的一半.
2)have + been +现在分词,构成完成进行时,例如:
I have been studying English for ten years. 我一直在学英语,已达十年之久.
3)have+been +过去分词,构成完成式被动语态,例如:
English has been taught in China for many years.
中国教英语已经多年.
5 助动词do 的用法
1) 构成一般疑问句,例如:
Do you want to pass the CET? 你想通过大学英语测试吗? Did you study German? 你们学过德语吗?
2) do + not 构成否定句,例如: I do not want to be criticized. 我不想挨批评. He doesn't like to study. 他不想学习. In the past, many students did not know the importance of English. 过去,好多学生不知道英语的重要性.
3) 构成否定祈使句,例如:
Don't go there. 不要去那里.
Don't be so absent-minded. 不要这么心不在焉.
说明: 构成否定祈使句只用do,不用did和does.
4) 放在动词原形前,加强该动词的语气,例如: Do come to my birthday party. 一定来参加我的生日宴会. I did go there. 我确实去那儿了.
I do miss you. 我确实想你.
5) 用于倒装句,例如:
Never did I hear of such a thing. 我从未听说过这样的事情.
Only when we begin our college life do we realize the importance of English.
只有在开始大学生活时我们才认识到英语的重要性.
说明: 引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等.
6) 用作代动词,例如:
---- Do you like Beijing? --你喜欢北京吗?
---- Yes, I do. --是的,喜欢.(do用作代动词,代替like Beijing.)
He knows how to drive a car, doesn't he?
他知道如何开车,对吧?
6 助动词shall和will的用法
shall和will作为助动词可以与动词原形一起构成一般将来时,例如:
I shall study harder at English. 我将更加努力地学习英语.
He will go to Shanghai. 他要去上海.
说明:
在过去的语法中,语法学家说shall用于第一人称,will 只用于第二、第三人称.现在,尤其是在口语中,will常用于第一人称,但shall只用于第一人称,如用于第二、第三人称,就失去助动词的意义,已变为情态动词,试比较:
He shall come. 他必须来.(shall有命令的意味.)
He will come. 他要来.(will只与动词原形构成一般将来时.)
7 助动词should,would的用法
1)should无词义,只是shall的过去形式,与动词原形构成过去将来时,只用于第一人称,例如:
I telephoned him yesterday to ask what I should do next week.
我昨天给他打电话,问他我下周干什么.
比较:
"What shall I do next week?" I asked.
"我下周干什么?"我问道.(可以说,shall变成间接引语时,变成了should.)
已经贴不下了.要得话上我的百度空间吧 介词我就贴在那儿
http://hi.baidu.com/muyao0513

在英语中,介词(preposition)虽然是一种小词,但在作用和运用上的复杂性却不可小看。首先,可以毫不夸张地说,离开了介词的中介或连接作用,就无法表达某些最基本的思想或概念。以时间为例,大到年代,小到日月,要表示某些特定的时间或时刻,离开介词有时就会寸步难行。比如"今年"虽然可以说this year,但要表达"在2000年",就不能省略介词,而要说in 2000;"这个月"是this mont...

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在英语中,介词(preposition)虽然是一种小词,但在作用和运用上的复杂性却不可小看。首先,可以毫不夸张地说,离开了介词的中介或连接作用,就无法表达某些最基本的思想或概念。以时间为例,大到年代,小到日月,要表示某些特定的时间或时刻,离开介词有时就会寸步难行。比如"今年"虽然可以说this year,但要表达"在2000年",就不能省略介词,而要说in 2000;"这个月"是this month,但"6月里"则需要说in June;"今天"虽然有现成的today一词,而如果是"在6月5日"就要说"on June 5th","在星期五"就得用on Friday(但在某些新闻报道里这些介词也可以省略不用)。再以位置为例,我们可以随便举出book和desk两个词,然后用介词表达出各种位置关系:the book on the desk(桌子上的书)、the book under the desk(桌子下面的书)、the book near the desk(桌子附近的书)、the book beside the desk(桌子旁边的书)等等。
介词不仅具有重要的表达意义的功能,而且在使用上也十分复杂。造成这种复杂现象的原因是多方面的。首先,单个介词(即由一个词语构成的介词,与此相对的是复合介词,比如upon,into,within,without等)本身的意义具有相当的复杂性,以in和on为例,in的基本意义是"在里面",表示一种范围,on的基本意义是"在上面",表示两种东西相接触,然而在speak in English(用英语说)和on the team(在队里当队员)两种形式中,in和on表达的则是引申意义;the boat on the lake指的是"湖上的船",但the cottage on the lake则表示"湖边的小屋"。
其次,英语中的单个介词虽然只有60个左右,但这些介词却可以同其他词类灵活搭配,构成为数众多的短语形式:
1.介词加名词构成的短语,由称介词短语,如by accident(偶然地),on purpose(故意地),for example(例如)in conclusion(总之)等。
2.由名词加介词构成的短语,比如concern for(对……的关心),love for(对……的热爱),satisfaction with(对……满意),confidence in(对……的信任),loyalty to(对……的忠诚)等等。
3.由动词加介词构成的短语,例如insist on(坚持要……),differ from(不同于,区别于),distinguish between(区别,区分),benefit from(从……得到益处,受益于……),conform to(符合)等等。
4.由形容词加介词构成的短语,比如be keen on(对……很热衷),be worried about(为……而担心),be fond of(喜欢),be strict with(对……很严格),be loyal to(终于……)等等。
上述这些搭配形式大都具有固定性,运用时常常来不得半点差错。比如比如be interested只能和in搭配构成介词短语,according和instead只能分别与to和of搭配构成两种短语介词。
此外,英语中还有一类短语介词,也即由介词加其他此类构成的短语,但作用相当于一个介词,比如in front意思接近before,in spite of和despite是一个意思,apart from和意义也很相近等等。短语介词还有很多,再如according to(根据),along with(随同……一起),because of(由于),by means of(依靠),instead of(代替),in accordance with(与……一致,依据),on behalf on(代表),owing to(由于),together with(和……一起),with regard to(关于),as for(至于),as to(至于),in view of(鉴于),for the sake of(为了……),on account of(由于)等等。
最后,单个介词还可以用在一起,这种现象称为双重介词,比如from within(从……里边),from behind(从……后边),from inside(从……里边),from outside(从外边)等等。
其三,同一个介词和不同的词语搭配或者同一个词语和不同的介词结合都可以产生不同的意义,前者如be good at(善于),be bad at(不善于),后者如agree with sb.(同意某人),agree on sth.(同意某事);在有些情况下,同一个介词和不同的词语搭配或者同一个词语和不同的介词结合有时也能产生相同的意义,前者如depend on(依靠),rely on(依靠),count on(依靠),后者如be good at(善于),be skillful in(善于)。
其四,有些结构用不用介词意义完全相同,比如consider后面的as就可以省略而意义不发生变化,而在有些结构中,有无介词意义则不完全相同,比如《红楼梦》中的刘姥姥初进大观园时会说:It is beautiful in here. 而贾府的丫鬟则会应酬说:Yes, it is beautiful here. 刘姥姥的话含有一种对比意义,即大观园和外面相比简直是两个世界,丫鬟已在贾府住习惯了,因此她的话就没有这种对比意义,所以刘姥姥就用了带有比较意义的in here,而贾府的丫鬟则用了没有对比意义的here。
除上面提到的几点外,英汉语不同的表达习惯也增加了介词学习的复杂性,比如英语说in the sun, in the moon,汉语则说"在阳光下"(英语的under the sun是"普天之下"的意思)、"在月光下";英语说The sun rises in the east and sets in the west,汉语则说"太阳从东方升起,从西方落下",或者不用介词,干脆说成"太阳东升西落";英语中的the hole in the wall, the nail in the wall, the map on the wall三个短语中用了不同的介词,而汉语则都用一个"上"字来表达:墙上的洞、墙上的钉子、墙上的地图;汉语可以直接说打某人的某个部位,英语则要先说打某个人,然后再通过介词去打某个部位:beat sb. on the head(打某人的头),同样,英语要说抓着某人某个部位,就得先说抓着那个人,然后再用by来表示被抓着的部位grasp sb. by his hand(抓着某人的手);英语中有besides和except两个词语,汉语可以用"除了"一种形式来表达,但汉语的"除外"既可以指包括,又可以指排除,在这两种不同的情况下,英语就得分别用两个介词来表示:
We all went there besides John. 除了约翰我们也去了那里。(即约翰去了,我们也去了)
We all went there except John. 除了约翰我们都去了那里。(即我们都去了,但约翰没去)
最后,为了解释英语介词用法上的复杂性和灵活多样性,我们特以from一词为例来作进一步的说明。
1.表示纯粹的分离,作"分开"、"分离"、"隔开"、"离开"解,常构成下列表达形式:
separate the good from the evil(把好的和坏的分开)
remove from the city to the countryside(从城市移居乡村)
part from a friend(断交)
depart from one's hometown(背井离乡)
keep away from dangerous things(远离危险)
flee from prison(逃离监狱)
keep (stand. aloof from the society(离群索居)
rise from table(离席)
fall from a tree(从树上掉下来)
withdraw from a meeting(离会)
move from one place to another(从一处迁至另一处)
retire from one's work(退休)
live apart from other people(离群索居)
2.表示"消失"、"消除":
The plane soon disappeared from sight. 飞机很快消失不见了。
After hearing this, the smile fled from her face. 听到这里,她的笑容立即消失了。
Let us remove all doubts from our minds. 让我们消除相互间的猜疑吧。
3.表示"禁止"、"戒除"、"免除"、"解除"、"除去"、"使免除"、"使脱离"等,有时具有否定意义,常构成下列表达形式:
remove dirt from a table(除去桌子上的灰尘)
release sb. from his suffering(解除某人的痛苦)
clear the land from trees(伐去地上的树木)
free sb. from debts(免去某人的

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