before的用法_before的用法时态

before的用法
关于介词短语的使用

  • 23rd of July 一定要有of吗? 直接July 23rd 可以吗? 还是说使用of 没什么规则只是约定俗成的使用?请指点
  • 常用的介词可以分为4类:简单介词(即基本介词,如about, in, on, with等)、合成介词(如into, out of , without等)、成语介词(如according to, apart from, for the sake of等)和分词介词(如concerning, including, respecting等) 一、常用的介词 about,above,across,after,against,around,at,before,behind,below,beneath,beside,besides,between,beyond,by,down,during,except,for,from,in,inside,into, like,near,of,off,on,out,outside,over,since,through,throughout,till,to,toward, under,until,up,upon, with,without, according to, because of, by way of, in addition to, in front of, in place of, in regard to, in spite of, instead of, on account of, out of. 哇,这么一大堆!别怕别怕,大部份的介词都不难理解,比较令人头痛的只是下列几个: at, by, to, in, for, of, on, from, with 其中又以 at, by, in, on 为四大“要犯"!学习介词就是要抓住这几"要犯",看招 吧,嘿嘿!! 二、Preposition Song (括号内是一部份介词用法提示,是我加的) 1. In the summer at the seaside (季节用in, 在海边用at) On the coast we like it fine (在海岸用on) but in winter ,yes ,at Christmas (在圣诞用at) By the fireside we recline (放置) (在炉边用by) 2. In July we went to Kenya (月份用in) Stayed in Lamu by the sea, (住在Lamu用in) We came back to Tanzania Then across Victoria sea 3. Did you come here in a taxi? (乘出租汽车用in) Or by bus, or on the train? (乘公共汽车用by, 乘火车用on) Did you come on foot this evening (步行用on) Or perhaps by aeroplane? (乘飞机用by) 4. Will you come to tea on Monday? (在星期一用on) I′ll be home at half past three (时间三点半用at) Yes, I′ll stay for half an hour (长达半小时用for) if you buy some beer for me (给我for me) 5. In the morning I drink coffee (早晨用in the morning) In the afternoon there′s tea (下午……余下全文

关于一句珍珠的俗语或者成语。

  • 大致意思是抱了一捧珍珠,结果喂给猪吃掉了。一般用法就是指学者发表了言论,结果被愚人无视甚至曲解。【抱】什么什么【付】群猪 之类的句式
  • 对牛弹琴的英文翻译To cast pearls before swine.

及物动词和不及物动词有什么区别?它们的用法又有什么不同

  • 及物动词和不及物动词有什么区别?它们的用法又有什么不同
  • 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..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.首先,要分清及物不及物动词.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.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 害唬愤舅莅矫缝蝎俯莽speak vi.讲话 vt.说(语言) hang vi.悬挂 vt.绞死 operate vi.动手术 vt.操作

cross,across,through和over的区别用法

  • cross,across,through和over的区别用法
  • across,cross,through,over的用法区别:across,cross是横过的意思,across是介词,通常在用go,run,swim.等搭配;cross是动词,通常可以直接放在句子中;through是穿过,跟across一样介词,通常在用go,run,swim.等搭配through与cross的不同在于:through是从中通过across是从事物表面穿过;over 是越过,在…上方.eg.①I went across the road = I cross the road.我横过马路(经斑马线)②The river runs through our city.这条河流经我们市.③He passed through the hall.他穿过大厅 ④I swam across the Changjiang River 20 years ago.肌唬冠舅攉矫圭蝎氦莽20年前我横渡了长江.⑤Look left and right before you go across the street.过马路时要左右看.⑥She put a blanket over the sleeping child.她给熟睡的孩子盖上毯子.⑦She climbed over the wall.她翻过墙去.⑧a bridge over the river 横跨河面的桥⑨They held a large umbrella over her.他们给她撑起一把大伞.

短语动词中的动词是及物还是不及物

  • 短语动词中的动词是及物还是不及物
  • 后面能跟名词的动词及物动词后面不能跟名词的动词不及物动词动词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.。**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……余下全文

for the first time 和 the first time 有什么用法区别

  • for the first time 和 the first time 有什么用法区别
  • for the first time 多在句子中表示“第一次做过的事情”for the first time,第一次做某事, 不能加从句.常用现在完成时.I have been here for the first t害供愤佳莅簧缝伪俯镰ime.the first time 更侧重“第一次的情况”the first time 常引导一个从句,如:The first time time I saw you, I realized I semmed to have met you somewhere before.相当于as soon as This is the first time Ive been here.

since和before的区别

  • since和before的区别
  • since是自从的意思 before是在~~之前 一段时间 +since 表示从这个时间开始到现在—自从~~~以来 用法上It + ( 现在完成时 ) + 一段时间+ since + ( 一般过去时 ) 例句: 1. It is has been four days since I caught害敞愤缎莅等缝劝俯滑 a cold. 我感冒已四天了. 2. It is has been two weeks since we met last. 自从我们上次见面以来已过了两周. 一段时间 + before 表示在这个时间之前,或者大约在这个时间上就会发生某事 用法上It + ( 一般将来时 ) + 一段时间+ before +( 一般现在时 ) 例句: It will be five years before he meets you again. 五年之后他就会再见你的. It + be (not) + long before 表示"(不)很久 才…"或"(没)过多久就 …" It was (not) long before …. (谈论过去) It will (not) be long before ….(谈论将来) It was long before she came back. 没过多久她就回来了. It will be long before we meet again. 很久以后我们才会再见面. It will not be long before we turn our hope into reality. 过不了多久我们的希望就会变成现实. 这里it指时间,before是连词,引导时间状语从句.long可用一段时间来替代.

英文中及物动词和不及物动词的区别

  • 英文中及物动词和不及物动词的区别
  • 在英语中按动词后可否直接跟宾语,可以把动词分成两种:及物动词与不及物动词.及物动词 vt.字典里词后标有vi.的就是不及物动词.不及物动词后不能直接跟有动作的对象(即宾语).若要跟宾语,必须先在其后添加上某个介词,如to,of ,at后方可跟上宾语.及物动词:又称“他动词”.又称“外动词”.动词的一种.它所表示的动作常涉及动作者以外的事物,如“吃”、“穿”、“读”、“写”等.字典里词后标有vt.的就是及物动词.及物动词后必须跟有动作的对象(即宾语),并且可直接跟宾语.1)及物动词 后面必须跟宾语意义才完整的实义动词,叫做及物动词(transitive verb).如:I believe that the committee will consider our suggestion.我相信委员会将会考虑我们的建议.“How long can I keep the book ”Harry asked.哈里问:“这本书我可以借多久?”Dr.Bethune s筏畅摧堆诋瞪搓缺掸画et us a good example.白求恩大夫给我们树立了好榜样.Crude oil contains many useful substances.原油含有许多有用的物质.2)不及物动词 本身意义完整后面不须跟宾语的实义动词,叫做不及物动词(intransitive verb).如:Birds fly.鸟会飞.It happened in June 1932.这件事发生于一九三;年六月.My watch stopped.我的表停了.She spoke at the meeting yesterday evening.她在昨天晚上的会上发了言.3)兼作及物动词和不及物动词 英语里有不少实义动词可以兼作及物动词和不及物动词.这样的动词又有两种不同的情况:a)兼作及物动词和不及物动词时,意义不变.试比较:Shall I begin at once?我可以立刻开始吗?(begin作不及物动词)She began working as a librarian after she left school.她毕业后当图书馆管理员.(began作及物动词)When did they leave Chicago?他们是什么时候离开芝加哥的?(leave 作及物动词)They left last week.他们是上周离开的.(left 作不及物动词)b)兼作及物动词和不及物动词时,有时意义不尽相同.如:Wash your hands before meals.饭前要洗手.Does this cloth wash well?这布经得起洗吗?4) 与汉语的比较 有时英语动词的及物和不及物的用法,与汉语的用法不一样,请注意下列两种情况:a)有的动词在英语里只能用作不及物动词,而汉语则可用作及物动词,如arrive到达,agree同意,1isten听.英语里这些动词后面常接介词.如:We arrived at the railway station at noon.我们于中午到达火车站.(at不能省去)(比较:We reached the railway station at noon.)Everybody listened to the lecture with great interest.每个人都很有兴趣地听讲课.(to不可省去)(比较:We all heard the lecture.)Do they agree to the plan?他……余下全文

be sure的用法

  • be sure的用法
  • 1.Be sure +不定式用于祈使句,作“务必、一定”讲.Be sure to come to my house.Be sure to finish your homework as soon as possible.2.be sure+从句,表“确信、对…….有把握”I am sure he is coming.= He is sure to come.3.make sure +从句 = make sure of 弄清、查清楚Make sure that he has handed his workbook.Make sure of it氦钉份固莓改逢爽抚鲸 before you start out.

to 的用法是这样吗

  • to 的用法是这样吗
  • T孩範粉既莠焕疯唯弗沥o 用法1.向;至;往:Shes going to London.她要去伦敦。Turn to the left.向左转。Pisa is to the west of Florence. 比萨在佛罗伦萨的西面。He has gone to school.他上学去了。2.(用于表示一系列事物或一段时间的尽头或限度) 直到:from Monday to Friday从星期一到星期五 from beginning to end 从开始到结束。3.用于表示接受者:Give that to me.把那个给我。I am very grateful to my parents.我很感激我的父母。What have you done to your hair?你把头发怎么搞的?Sorry I didnt realize you were talking to me.对不起,我不知道你是在跟我说话。4接触到;针对:He put his hands to his ears.他将两手捂住耳朵。They sat back to back.他们背对背坐着。She made no reference to her personal problems.他没有提及自己的个人问题。5.达到某种状态:The meat was cooked to perfection.这肉煮得恰到好处。His speech reduced her to tears(=make her cry).他的话令她流泪。6.(用于引出比较中的另一部分):I prefer theatre to opera.我喜欢戏剧,甚于歌剧。7.(用于表示数量每“`等于:How many dollars are there to the euro?多少美元等于一欧元?8.(用于表示时间)在“`之前:Its ten to three.(=ten minutes before three oclock).现在是三点差十分。9.(用于表达对某物的看法或感受):To me,it was the wrong decision.我认为那是错误的决定。It sounded liked a good idea to me.我觉得这听起来是个好主意。I dont think our friendship means anything to him.我认为我们的友谊对他说毫不重要。10.(用于表达某人对某事的反应或态度):To my surprise,I saw two strangers coming out of my house.我看见两个陌生人从我家里走出来,吃了一惊。His paintings arent really to my taste.他的画真的不符合我的口味。11.(与动词连用,构成不定式。):I want to go home now.我现在想回家。Dont forget to write.别忘记写信来。I didint know what to do.我当时不知道该怎么办。12.(指门)关上Push the door to.把门推一推关上。

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