it的用法总结
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it代词的用法It可用作代词、引导词和形容词。
it的基本意思是“它”,通常指动物或事物,有时也可用来指代一个群体或一类人。
it作代词的用法(一)it可指未知的人或物。
(二)it可指已提过名字但未说明具体内容的人或事。
(三)it可表示时间,在肯定句中可代替形容词、副词、介词短语等表示时态、时局、季节、天气等概念。
(四)it可代替表示数字的名词,在时间、距离、大小、尺寸、强度等方面的词语,以避免重复。
(五)在句型转换中,有时为了避免用that来联系句子的上下文,而用it。
(六)it可用作先行词,用于强调句型中。
It引导的强调句型结构:It is/was+被强调部分(通常是主语、宾语或状语)+that/who(当强调主语且在句首时)+其余部分。
被强调部分指人时用that,其余情况一律用who。
It作形式主语和形式宾语的用法It可用作形式主语或形式宾语,而将主语或宾语从句放在句子后面。
常用作形式主语的it,在句子中没有具体语义作用,只是为了代替主语或宾语以保持句子结构的完整。
或者是为了句子的语法需要。
它的出现缓解了头重脚轻的问题。
通过举一些例子帮助记忆。
另外通过一个简单题型的练习来巩固记忆。
it作为人称代词的用法It作人称代词时,一般只用作主语,可以替代上文名词短语,相当于one;又可用来对下文不便于说出的某个人或事物进行说明、警告或表示强调等,这种用法多见于文学作品中。
It 可以用作单数或复数,多用其“is/were”的形式,而少用其“there”的形式。
It用作人称代词还有一种比较含蓄的说法:one of them(它们中的一个)。
当人称代词在句中作表语的时候,其单复数形式一般应与后面的名词相一致。
当人称代词在句中作主语时,其单复数形式则取决于句子的含义和上下文的关系。
It的其它用法(一)it还可以用作限定词(表示泛泛或反复提到的“它”),作定语修饰其他名词时必须置于名词之后,只用于单数可数名词前,相当于what或which。
It的用法及典型句型归纳一、人称代词it的最基本用法是作代词,主要指刚提到的事物,想法,以避免重复;也可以指性别不明或性别被认为是不重要的人或动物;未指明但谈话双方都明白的事情或情况。
①They watched the train until it disappeared in the distance.②Is this your dog?No, it isn’t.③I hate it when people talk with a full mouth..二、.非人称代词.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等:It is a lovely day, isn’t it? // It was nearly midnight when she came back.It is April First today. // It is some 3000 kilometers from A to B.It is three dollars. // Today it is 30 degrees centigrade.三、作形式主语,替代主语从句,动词不定式,或动名词短语1.作形式主语替代主语从句⑴It is clear ( obvious,true,possible,certain....) that"┅清楚的(显然的,真的,可能的,肯定的...)"⑵It is important ( necessary,right,strange,natural...) that + (should ) do (虚拟语气)┅是重要的(必要的,对的,奇怪的,自然的┅)⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that= sb / sth is said (reported/ believed /thought…) to do( to be doing/ to have done) sth"据说(据报道,据悉...)"。
It 的用法归纳1. It指天气、光线、时间、距离、状况、环境情况等2. It可代替前面已经叙述过的名词(指事物,动物或很小的小孩),以及something, anything, everything, nothing,和不是指人的this, that等---其作用是避免同一个名词的重复。
3. It代替前面已经说过的片语或从句,以避免重复。
4. It用做形式主语1) 用在一些固定的结构里。
如;It seems(appears, looks) that 好象It happens that 碰巧It occurs to sb that 某人想到It is a pity(a shame, a fact, an honor, a wonder) that…It is strange (natural, possible, likely, quite clear, unusual, etc.) that sb. should do…It was said (reported, announced, arranged, decided, stressed, believed, etc.) that…It doesn’t matter (doesn’t seem to matter much, doesn’t affect us, etc.)+ 连接代词或副词引起的从句2) 不定式做真正的主语,用It作形式主语。
3) 动名词做真正的主语,用It作形式主语。
常有以下几种结构:It is useless/ no use/ no good/ not any use/ not any good / not much use/ not much good+ V - ingIs it any use/ any good +V -ing?It is worth +V -ing5. It作形式上的宾语当句子的宾语是动词不定式或that 从句时我们有时用It作形式宾语。
Unit 3 A healthy lifeLearning Plan (Grammar)Objective:To learn the use of “it” properlyit的用法总结:形式主语;形式宾语;人称代词;代替指示代词;非人称代词表示时间、日期、地点、天气、温度、距离、环境等;某些习语及习惯用法。
1.做形式主语it 可以用作先行词作为句子的主语,而把句子的真正主语移到后面去, 可以移到后面的主语是:1)不定式句子的谓语可以是:be + 形容词e.g. It is important to know your limitations.知道自己的局限性是很重要的。
be + 名词;e.g. It is a good idea to have a little notebook handy.手边有个小笔记本是个好主意be + 介词短语;e.g. It is against the law to do that. 这样做是违法的。
其他类型的谓语e.g. It gives me great pleasure to see the movie. 观看电影让我很高兴。
2) 动名词用no good, no use, great fun, a new experience等名词作表语;e.g. It is fun working for him. 为他工作很有意思。
也可用某些形容词作表语;e.g. Do you think it is worthwhile quarrelling with him?你认为和他吵值得吗?其他的谓语形式。
e.g. Does it matter wasting a little money?稍微浪费一点钱行吗?3) 主语从句可以是that引导的;e.g. It is strange that it hasn’t been noticed before.真奇怪, 它以前没有引起注意。
" It" 做形式宾语用法总结当不定式(短语)、动名词(短语)或从句在某个句子中作宾语时,为保持句子结构平衡,避免句式结构的混乱,常用it作形式宾语,而将真正的宾语放在句尾,构成“动词+it+宾语补足语+不定式(动名词或从句)”结构,也可称作“6123结构”。
此时it仍只起先行引导作用,本身无词义。
它可以代替三种形式:不定式、动名词和宾语从句。
it作形式宾语时,需具备两个条件:①真正的宾语是不定式、动名词或从句; ②有宾语补足语,具备了这两个条件,形式宾语it一定要用。
⒈ it代替不定式短语think/ find/ feel/ consider/ make/ regard…+ it +形容词/名词+ 不定式短语如:①I find it pleasant to work with him.(it 作形式宾语,代替不定式短语to work with him)②They felt it difficult to finish the work in such a short time.(it 作形式宾语,代替不定式短语to finish the work in such a short time)③She thinks it her duty to help us.(it 作形式宾语,代替不定式短语to help us)④I think it my honor to be invited to speak here.(it 作形式宾语,代替不定式短语to be invited to speak here)⑤Tom didn’t find it difficult to write letters i n Chinese.(it 作形式宾语,代替不定式短语to write letters in Chinese)⑥All these noises made it impossible for me to go on with the work.(it 作形式宾语,代替不定式短语to go on with the work)⒉ it代替动名词短语( 这只限于少数句型,在多数情况下用不定式时更多一些)如:①The professor considers it no good reading without understanding.②Do you consider it any good trying again?③He found it useless( no use) arguing with him.④He thought it absolutely senseless attempting the impossible.⑤I don’t think it worthwhile going to such a place.⒊ it代替宾语从句:如:①We all thought it a pity that the conference should have been cancelled.②I took it for granted that they were not coming.③I’ll see to it that everything is ready in time.“it”的特殊用法常出现在以下几种结构中。
it的用法总结IT的全称是Information Technology,意为信息技术。
它是现代社会不可或缺的一部分,影响着人们的各个方面,包括通信、商业、教育、娱乐等等。
在本文中,将分析和总结IT的用法。
首先,IT被广泛应用于通信领域。
随着互联网的普及和发展,人们可以通过电子邮件、社交媒体平台、即时通信工具等与世界各地的人们进行交流。
IT技术的发展也改变了人们的通信方式,我们可以轻松地进行视频通话和在线会议,让沟通更加方便快捷。
其次,IT在商业领域的应用也非常广泛。
企业可以利用IT技术来管理和处理数据,加快业务流程和决策制定速度。
例如,他们可以使用电子表格软件进行财务分析,使用客户关系管理系统跟踪客户信息,使用电子支付系统进行在线交易等等。
此外,电子商务也是IT在商业领域的一个重要应用方向,它使企业能够在线销售产品和服务,扩大市场范围,提高销售额。
教育是IT另一个重要应用领域。
教育机构可以利用IT技术提供在线学习平台,让学生可以在家里或其他地方获得教育资源。
学生们可以通过电子书、在线课程和教育应用程序进行学习。
此外,IT技术也可以被用于远程教育,例如通过视频会议让学生在线参加课堂讨论。
IT在娱乐和媒体领域的应用也非常显著。
传统媒体如电视、音乐和电影行业都借助IT技术进行数字化转型。
人们可以通过流媒体服务观看电影和电视节目,通过音乐应用程序收听音乐。
此外,社交媒体也成为人们分享生活、交流观点的主要平台之一。
IT技术也在游戏行业发挥着重要作用,游戏开发者使用各种工具和技术来创造出精美的游戏画面和交互体验。
随着科技的不断发展,IT在医疗领域的应用也越来越重要。
医疗机构可以利用IT技术进行电子健康记录的管理,使医生能够更好地跟踪和管理患者的病历。
此外,通过远程医疗技术,医生可以远程诊断和治疗患者,减少患者的就医时间和成本。
IT技术在交通运输领域也得到了广泛应用。
航空公司可以利用IT技术来管理订票系统和飞行运营。
It是英语中高频词之一,几乎无处不见。
在用法上,能够作人称代词,非人称代词,先行词,用于强调句型,以及习惯用法。
22.1 人称代词it (Personal it)It作人称代词,其功能是替换,代替一个词,词组或整个句子,避免重复。
it可指事物,也可以指人。
指代婴儿或较年幼的小孩,或者用于某些句型中,指代人。
22.1.1 指代事物--Look at that bird. It always comes to my windows.--The sun kept changing everything as it moved across the sky.--She made some soup and gave it to the children.22.1.2 指代人--Her new baby is tiny. It only weighs 2 kilos.--Ann (on phone): Who is it?--Bill: It's me.-Is that Tom over there?-No, it's Peter.22.1.3 指代已经叙述的一个分句或一个句子,也可指隐含的整个情况或事实。
--A: Who said that I was crazy?--B: I said it. ("it" means "that youwere crazy")--Rome was sacked by the Visigoths in 410 A.D. It (the sack of Rome)--was the end of civilization as the West had known it.--He has gone out of his way to help us. We won't forget it.--It doesn't matter.--It's my fault.然而,it代替整个句子的用法,不能用在know, remember, try, tell,forget 等动词之后。
人称代词it的用法和例句一、人称代词it的基本用法和形式人称代词是英语中常用的代词形式,用来表示特定人或物,其中包括第一人称(I)、第二人称(you)和第三人称(he/she/it)。
本文将重点探讨其中的第三人称代词之一——it的用法和例句。
1.基本用法作为一个第三人称单数主格代词,"it" 在句子中常被用来指代非生物事物、动物或无性别的实体。
它的主要作用是引起注意、衔接上下文以及强调某个事物。
2.主要形式在成为语句主语时,"it" 作为第三人称单数主格代词只有一个形式,并不随性别或数量而改变。
在其他情况下,例如宾格、属格等时也不变化。
二、it 作为主语时的具体使用方式1. 指示特定事物当我们需要在一个句子中引入一个特定的事物并且不涉及其性别时,可以使用"it" 作为主语。
例句:- It is raining heavily today.今天雨下得很大。
- I found a book on the table. It seems interesting.我在桌子上发现了一本书。
它看起来很有意思。
2. 表示天气状况、季节等抽象概念"it" 经常用来表示天气状况和季节,尤其是在句子中没有具体的人或物可用作主语时。
例句:- It is hot in summer.夏天很热。
- It's early spring now, and the flowers are starting to bloom.现在是初春,花儿开始绽放。
3. 引出下文或特定情境当我们需要引入一个新的话题或者指代刚刚提到过的事物时,可以使用"it" 作为主语。
例句:- I have something to tell you. It is about your sister.我有件事要告诉你。
关于你姐姐的事。
三、it 的其他用法及实例分析1. 表示动物当我们讨论动物时,特别是非人类动物时,一般会使用“it” 来指代。
"It" 做形式宾语用法总结当不定式(短语)、动名词(短语)或从句在某个句子中作宾语时,为保持句子构造均衡,防止句式构造的杂乱,常用it 作形式宾语,而将真实的宾语放在句尾,组成“动词+it+宾语补足语+不定式(动名词或从句)”构造,也可称作“6123 构造”。
此时 it 仍只起初行引导作用,自己无词义。
它能够取代三种形式:不定式、动名词和宾语从句。
it 作形式宾语时,需具备两个条件:① 真实的宾语是不定式、动名词或从句; ②有宾语补足语,具备了这两个条件,形式宾语it 必定要用。
⒈ it 取代不定式短语think/ find/ feel/ consider/ make/ regard形容+词it +/名+ 不定式词短语如:①I find it pleasant to work with him.(it 作形式宾语,取代不定式短语to work with him)②T hey felt it difficult to finish the work in such a short time.(it 作形式宾语,取代不定式短语to finish the work in such a short time )③S he thinks it her duty to help us.( it 作形式宾语,取代不定式短语to help us)④I think it my honor to be invited to speak here.( it 作形式宾语,取代不定式短语to be invited to speak here )⑤T om didn’t find it difficult to write letters i n Chinese.( it 作形式宾语,取代不定式短语to write letters in Chinese )⑥A ll these noises made it impossible for me to go on with the work.( it 作形式宾语,取代不定式短语to go on with the work ))⒉ it 取代动名词短语( 这只限于少量句型,在多半状况下用不定式时更多一些如:①T he professor considers it no good reading without understanding.②Do you consider it any good trying again?③He found it useless( no use) arguing with him.④He thought it absolutely senseless attempting the impossible.⑤I don ’t think it worthwhile going to such a place.⒊ it 取代宾语从句:如:①We all thought it a pity that the conference should have been cancelled.②I took it for granted that they were not coming.③I ’ll see to it that everything is ready in time.“ it的”特别用法常出此刻以下几种构造中。
It 的用法总结 一. 代词: 1) 指代上文 2) 指代this/that 3) 指代未知性别的婴儿或孩子或身份不明的人 4)指代时间/地点/天气/温度/距离/环境 What does “it” refer to? 1.It gets dark very early in the winter. 2.What will you call it if it’s a boy? 3.I love spring---It’s a wonderful time of the year. 4.It’s less than 100 kilometres from here to Jinan. 5.When the factory closes, it will mean 500 people losing their jobs. 6.What’s this? It’s a cat. 7.It has snowed much this year. 注意:it,?one和that, those作替代词的区别? (1)The book in your bag is very interesting. Can I borrow ? (2) The book in your bag is more interesting than ______ on the desk. (3) The weather here is much colder than____ in Nanjing. (4) The books are free. You can take____ free of charge. (5) The books in the bag are better than _____ on the desk. it 表示特指,与前面指代的名词是同一个 one 表示泛指,指代单数可数名词,与指代的名词同类但不同一个 that表示特指,相当于the+名词单数,与指代的名词同类但不同一个 those表示特指,相当于the+复数可数名词, 与指代的名词同类但不同一个 it指时间的几个重要句式 【句式1】it is /has been + 段时间 + since ----自从----多久了 • It is / has been 3 years since I visited your company. 【句式2】It was + 段时间 + before ---过了多久-----才--- • It was 3 hours before he realized the truth. 【句式3】It will be +段时间 + before --要过多久----才-- • It will be 3 months before they complete the bridge. 【句式4】it was + 点时间 + when ---某事发生于---某一时刻— It was 10 o’clock when the big fire broke out . 【句式5】It /this is/was the +序数词+ time + 现在完成时态/过去完成时- (表示某人第几次做某事) • It is the second time I have heard of this . 【句式6】It is time (about time /high time ) that sb. did /should do (该是干……的时候了) It is time that we went to school. 对比训练 1. It will be years ____ we meet again. 2. It is ten years ____ I came to this town. 3. It is ten years ago ____ I came to this town. 4. It is the third time ___ I _________ (visit) to this town. 5. It was 2 am. ___Tangshan earthquake took place. A. when B. that C. before D. since 二. 引导词: 1)形式主语 2)形式宾语 3)强调句 It 作形式主语 基本结构: It + be/v. +……+ (for sb/ of sb.) to do sth (动词不定式) doing sth.(动名词短语) that/ whether …(从句) 注意1:: For or Of ? 1. It is important ____ us to learn English well. 2. It is very kind ____ you to help me learn English. 3. It is foolish ____ you to believe him. 4. It is necessary ____ you to go over this lesson.
注意2; It 何时代替doing? It +be + no use no good + doing sth a waste of time …… 翻译: 1. 和他争论没有用。_______________________________ 2. 打电脑游戏是浪费时间。_____________________________________________
注意3:that 后的从句要用虚拟语气(should + 动词原形),should 可以省 (1). It is a pity (a shame /an honor /a good thing/a fact /a surprise/... ) that ... (2). It is important ( necessary,strange,natural...) that ... (3).It is insisted(ordered/commanded,suggested/advised/proposed,demanded/requested/required... ) that ...
注意4:He is said/ reported to have gone abroad. =It is said/reported that he has gone abroad. All the students are believed to have done their best. =It is believed that all the students have done their best.
注意5:It + vi.(不及物动词) + that It happens that he was out. 碰巧… It seems that he doesn’t know the secret. 好像… It appears that he is honest. 好像… It occurred to me that I lost my purse on the bus. 我突然想到… It doesn’t matter whether he will come or not. …没有关系 It作形式宾语 基本结构: 动词+ it + 形容词/名词 +( for/of sb +)to do(动词不定式) think doing sth(动名词短语) believe? that 从句(从句) find? necessary feel? possible consider natural, suppose no use/no good/ make? a waste of time keep…? …… I think it important to make a summary in time. I find it a good habit that we make a summary in time. He felt it no use learning English without speaking it.
it作形式宾语的特殊句型:V.+ it + if/that/when 动词有喜欢类:enjoy, like, appreciate, prefer 讨厌类:hate, dislike I would appreciate it if you paid in cash. I like it in the autumn when the weather is clear and bright. I hate it when people talk with their mouths full. It引导强调句 1. 基本结构:It is/was + 被强调部分 + that /who(人) ... 例如:他是因为病了才没能帮我 It was because he was ill that he couldn’t help me. Was it because he was ill that he couldn’t help me? Why was it that he couldn’t help me? 2. not…until句式的强调句型: It is/was not until …+ that ... “直到…才…” 例如:He didn’t get home until it was dark. ,
三.用在固定结构中的it take it easy. 别紧张 take it for granted 认为···理所应当 believe it or not 信不信由你 make it 成功;完成某事 forget it 忘了吧; 没关系 worth it 有好处,值得做 It/That all depends. 要看实际情况而定 when it comes to···· 当谈到…,但提到… got it =understand 理解,明白