It用法总结知识讲解

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it的用法知识讲解

it的用法知识讲解概念引入先看这些句子，想想it的用法是什么？1. It is a beautiful day here and I am sitting under the big tree at the end of the garden.(表天气)2. It seems amazing that at my age I am still fit enough to cycle 20 kilometres inan afternoon.(代替that从句作主语)3. It’s my birthday in two weeks’time and I’ll be 82 years old!(表时间)4. Your mother tells me that you started smoking some time ago and now youare finding it difficult to give it up.(第一个it代替to give it up作宾语；第二个it代替上文中“吸烟”的事)下面我们就先学习it作为代词和形式主语、形式宾语的用法。

用法讲解代词it1. 作人称代词人称代词it是有实义的，是单数第三人称代词。

主格与宾格相同。

1）指代人以外的一切生物或事物，如前文提到的事物或未指明但谈话双方都知道的那件事；Ningbo is a beautiful city, isn’t it? 宁波是座美丽的城市，是不是？It doesn’t matter. 没关系。

2）替代前文中的this, that；This is your plan? Will you hand it in? 这是你的计划？你要交上去吗？3）指代婴儿、小孩或性别不明的人。

The baby is crying. It might be hungry. 婴儿在哭，或许饿了。

—Someone is ringing. Who might it be? 有人按门铃，可能是谁呢？—It must be my friend T om．He (不可用It) wants to see you．一定是我的朋友汤姆，他想要见你。

第十七章It和there be句型(思维导图知识梳理好题精炼)2022-2023初中英语中考语法归纳

第十七章It和there be句型思维导图知识梳理一、It的用法在英语中,it的使用相当广泛,它既可以用作代词,也可用作引导词,还可用在强调结构中.(一)作人称代词这时it指前面已经提到过的人或事物.-Where is the cat?-猫在哪儿?-It is lying under the chair.-它躺在椅子下面.He took off the first shoe and threw it on the floor.他脱下第一只鞋子,把它扔在地板上.I've seen the film Gone with the Wind,It is very interesting.我看过电影《飘》.这部电影很有意思.(二)作非人称代词1.当说话者不清楚或无必要知道说话对象的性别时,也可以用it指代.Is it a boy or a girl?是男孩还是女孩?There is someone knocking at the door.Who is it?有人敲门.是谁呢?2.it除可代替事物外,还可指时间、天气、距离、重量、状况或其他情况等It's time for class.是上课的时候了.It's warm today.今天天气暖和.It weighs350pounds.重量为350磅.3.it有时不确指How's it going with you?你近况如何?It was dull when Mary was away.玛丽不在,真没劲.How is it going?情况怎么样?4.it还可用于强调结构英语常用的强调结构为it is(was)+被强调部分(主语、宾语或状语)＋who(that)....一般说来,被强调部分指人时用who(that),指物时用that.It is Li Lei that cleaned the classroom.是李雷打扫了教室.It was yesterday that l bought the book.我是昨天买这本书的.(三)作形式主语为了避免将句中作真实主语的不定式短语、-ing分词短语和主语从句置于句首造成头重脚轻,习惯上用it作形式主语来指代后面的真实主语.1.代替不定式短语It is wrong to tell a lie.说谎是不对的.It is necessary to buy that dictionary.有必要买下那本词典.2.代替-ing分词短语It is no use going there so early.这么早去那里没用.It is no use learning without thinking.学而不思则罔.3.代替主语从句It is said that Mary is leaving for London tomorrow.据说玛丽明天要动身前往伦敦.It is certain that we shall succeed.我们一定会成功.(四)作形式宾语当复合宾语中是以不定式短语、-ing分词短语或名词从句作宾语时,常用it作形式宾语,而把真正的宾语放在宾语补足语之后.1.代替不定式短语He thought it best to put on his cap.他认为最好还是戴上帽子.I consider it important to ask the teacher.我认为问老师问题很重要.We make it a rule to take a walk after supper.我们习惯于在晚饭后散步.2.代替-ing分词短语Do you consider it any good trying again?你觉得再试会有好处吗?I found it no use arguing with him.我发现和他辩论没有用.3.代替宾语从句Didn't I make it clear to you that I was not coming?我不是向你明确表示过我不来了吗?We found it strange that no one would take the money.我们感到很奇怪,谁也不要这笔钱.二、there be句型(一)there be句型的用法英语中有一个独特的句型叫There be句型,表示某事物或人的存在关系.其结构是:There be+某人／某物＋某地.There叫引导词,在句中不充当任何成分,译成汉语时,也不必译出,句中的主语是某人或某物,谓语动词be要与主语的数一致.当主语是由两个或两个以上的名词充当时,谓语动词be要跟它相邻的那个名词的数一致.1.there be句型的肯定式There were two books and three boxes on the table.桌上有两本书,三个盒子.There are five different time zones in the States.在美国有5个不同的时区.2.there be句型的否定式“There be”结构的否定式是在be后加not或no.There are not any boats on the lake.湖上没有船.There were no classes this afternoon.今天下午没有课.3.there be句型的疑问句Is there anything I can do for you?我能为你做点什么吗?What scenic spots are there in Shanghai?上海有什么风景区?Are there many students in the classroom?教室里有许多学生吗?4.there be句型的反义疑问句There be句型的反义疑问句的构成为“There be+主语＋其他,be(not)there?”.这与一般情况下的反义疑问句的构成是不同的.There will be a big snow tomorrow,won't there?明天将有一场大雪,是吗?There is little milk at home,is there?家里没牛奶了,是吗?(二)there be句型需注意的几个问题1.如果有两个或两个以上的主语,谓语动词be常和最靠近的那个主语在数上一致There is a pen,two books and many pencils on the desk.桌子上有一支钢笔,两本书和许多铅笔.There are two books,a pen and many pencils on the desk.桌子上有两本书、一支钢笔和许多铅笔.2.“there be”结构中的be可以有不同的时态,而且可以和助动词连用There may be some dangerous animals on this island.这个岛上可能有些危险的动物.There must be something wrong.一定是出了什么差错.3.在这个结构中除用动词be之外,有时还可以用和be意义相近的其他动词像live,exist,stand,lie,occur, come,remain等Once there lived a lion in a forest.从前,森林里有只狮子.There has occurred an accident on the road.马路上发生了事故.There stands a beautiful mountain near the village.村旁有座美丽的山.4.动词be还可与happen to,appear to,seem to,be going to,be sure to,be certain to,be likely to等“半助动词”相结合构成“there be”结构中的谓语There happened to be a ruler here.这儿碰巧有把尺子.There seemed to be lots of people there.那儿似乎有很多人.There's certain to be trouble in the factory.工厂里肯定会有麻烦.There's likely to be a large audience.可能会有很多听众.(三)there be句型与have的用法区别1.there be句型表示“存在关系”而have表示“所有、拥有关系”He has a lot of friends.他有许多朋友.(所有)She has seven sons.她有7个儿子.(拥有)There are more than2000students in our school.我们学校有2000多学生.(存在)2.当have表示“包括,存在”时,可以用there be句型替换The year has four seasons.=There are four seasons in a year.一年有四季.Beijing has many universities.=There are many universities in Beijing.北京有许多大学.3.用have侧重主观,用there be侧重客观存在I have a message for you.我给你带来个口信.There is a message for you.有你的一个口信4.当have的主语是人称意义很淡薄的we,they时,可以用there be句型替换.多出现在口语中.在这种情况下,用there be的句子中多数有介词短语,表示时间、地点、目的等.这时have表示“所有”的含义比较含糊或淡薄,主要是表示客观存在.有时,在have的宾语后还可能是不定式或分词短语We've had a lot of rain lately.There has been a lot of rain lately.最近下了很多雨.好题精练一、用it改写下列句子1.To learn Chinese is difficult for a foreigner.____________________________________________________________________________________________ 2.Talking to him is no use.____________________________________________________________________________________________ 3.To spend a day on the beach is really great fun.____________________________________________________________________________________________ 4.The railway station is only three miles from the airport.____________________________________________________________________________________________ 5.For one to learn a foreign language in three months'time seems impossible.____________________________________________________________________________________________答案:1.It is difficult for a foreigner to learn Chinese.2.It is no use talking to him.3.It is really great fun to spend a day on the beach.4.It is only three miles from the airport to the railway station.5.It seems impossible for one to learn a foreign language in three months'time.二、选择括号内的正确答案,注意存在句(there be)要主谓一致()1.There(is,are)some pens on Jack's desk.()2.There(is,are)many kinds of birds in the world.()3.There(is,are)a lot of problems in the country.()4.There(isn't,aren't)any mail for you today.()5.There(isn't,aren't)any letters in the mail for you today.()6.How many kinds of animals(is,are)there in this area?答案:1.are2.are3,are 4.isn't 5.aren't 6.are三、用there be结构和It结构翻译下列句子1.街道两旁矗立着许多高楼.____________________________________________________________________________________________ 2.剧院有什么可看的?____________________________________________________________________________________________ 3.我们学校前面有一个湖.____________________________________________________________________________________________ 4.你家有几口人?____________________________________________________________________________________________ 5.这儿曾经有一个国王.____________________________________________________________________________________________ 6.我们要在几个月内学好一门外语是不可能的.____________________________________________________________________________________________ 7.你这么说,真是心肠好.____________________________________________________________________________________________ 8.众所周知,桂林是一个美丽的地方.____________________________________________________________________________________________ 9.和他一起工作很难.____________________________________________________________________________________________答案:1.There stand a lot of tall buildings on both sides of the street.2.What is there to see at the theatre?3.There lies a lake in front of our school.4.How many people are there in your family?5.Once there lived a king here.6.It is impossible for us to learn a foreign language well within a few months.7.It's kind of you to say so.8.It is well-known that Guilin is a beautiful place.9.It is very difficult to work with him,。

高中英语语法知识之It的用法总结

高考英语语法知识之It 的用法总结1. It is + 被强调部分+ that ...该句型是强调句型。

将被强调的部分放在前面, 其它部分置于that之后。

被强调部分可以是主语, 宾语, 状语。

强调的主语如果是人, that可以由who换用。

如果把这种句型结构划掉后, 应该是一个完整无缺的句子。

这也是判断强调句型与其它从句的方法。

I.wa.the.tha.(who.cleane.th.classroo.yesterday.I.wa.i.th.stree.tha..me.he.father.2. It was not until + 被强调部分+ that ...该句型也是强调句型。

主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说.no....unti....的强调形式. It was not until she took off her dark glasses that I realized she was a famous film star.= Not until she took off her dark glasses did I realize she was a famous film star...didn’.realiz.sh.wa..famou.fil.sta.unti.sh.too.of.he.dar.glasses.3. It is clear ( obvious, true, possible,certain....)that .....该句型中it 是形式主语, 真正的主语是that 引导的主语从句, 常译为＂清楚（显然, 真的, 肯定．．．）＂是主语从句最常见的一种结构。

It is very clear that he’s round and tall like a tree.= That he’s round and tall like a tree is very clear.4.I.i.importan..necessary.right.strange.natural....tha....由于主句中的形容词不同, tha.后的从句中要用虚拟语气（shoul..动词原形）, shoul.可以省去。

2019中考英语知识点：it的用法

2019中考英语知识点：it的用法代词it,在中几乎处处都有它的位置。

可见，it虽小用处很大。

现将其用法归纳如下：1.用来代替前面提到过的人或事。

What’sthis?It’sabus.2.指人时可作为指示代词看待，一般不必译出。

Whoisknockingatthedoor?It’sme.Whoisit?It’sme.3.指天气状况等。

Itisgoingtorain.It’srathercoldnow.It’sverycoldtoday.4.指时间。

It’sSundayagain.It’seighto’clockinthemorning.It’sfiveyearssinceIsawyoulast.5.指距离。

It’sonlyfiveminutes’walknow.Itis6milestothemuseum.Isitveryfartothecableoffice?6.指环境状况等。

Itwasverynoisyatthemoment.7.泛指一般情形，或依上下文可以领会的事物，有的属于习惯用法，无法确定其含义。

That’sit!对啦!Soitseems.好像是这样。

That’sthebestofit!那最好了!Keepatit!继续干!8.用来代替小孩和婴儿。

Thechildsmiledwhenitsawitsmother.9.代替整个句子。

Youhavesavedmylife.Ishallneverforgetit.10.作形式主语，使句子不至于“头重脚轻”。

It’sgoodtoseeallmyteachersandfriendsagain.It’sinterestingtoclimbhills.It’sapitythatyoudidn’tgotoseethefilm.11.也可以作形式宾语。

Shefounditverydifficulttoanswerthequestion。

知识点梳理 it的用法

知识点梳理it的用法1．代替上文中提到过的人或事物。

指代人时，一般用于小孩或身份不十分明朗的人。

例如：－Who is the baby? －It’s my teacher’s son．－Who is that gentleman?－It’s my friend, Tom．He (不可用It) wants to see you．2．用于表达天气、环境、时间、距离、季节等。

It’s half an hour’s walk from here to our school．It’s nice and warm here．But it’s two o’clock now, and it’s time for us to go to school．注意下列几种表示时间的句型①. It is time ( about time ,high time ) that ...It’s high time that we left.②. It is the first ( second ... ) time that ...It’s the first time that I have been praised.③. It is / was ... when ...It was 1949 when the PRC was founded.④. It be +时间段+since引导的状语从句主句从句意义is/ has been V-ed 从过去的一个时间延续至说话的现在was Had v-ed 从过去的某个时间点延伸至另一个过去时间点1. It has been three weeks since he arrived here. 他到这儿已经有三周了2. It is two years since he left London. 自从他离开伦敦有两年了3. It was years since I had seen her. 我和他好几年没见面了。

《新概念英语第二册》十、“It”的用法和“There be”结构+专项训练

《新概念英语第二册》语法总结知识要点：一、代词it三、it【专项训练】it的用法1、“Do you like fish?”“Y es, I like .”A．×B．it C．that D．them2、today?A．How is it B．What is it C．What is it like D．How is the weather.3、“Do you want a watch?”“.”A．Yes, I want it .B．Yes, I want one. C．No, I’ve got it.D．No, I’ve got the watch.4、“Whose exercise-book is that?”“hers”A．That is B．This is C．It’s D．Its5、won’t take long to get to Shanghai by air.A．That B．He C．It D．This6、What he has done helps us a lot, ?A．isn’t he B．doesn’t he C．isn’t it D．doesn’t it7、We all thought no use doing that.A．it B．that C．this D．there8、I took it for granted you would come to our party.A．when B．why C．for what D．that9、How happy to be able to study and live together with you!A．that will be B．is it C．will it be D．it will be10、I thought it to be .A．him B．he C．its D．she11、very foolish of you to say so.A．It’s B．Its C．That’s D．This12、It’s not his habit for things.A．asks B．ask C．to ask D．asked13、It has been a great honour coming to visit me.A．they B．you C．she D．he14、I found to hear what he said.A．that difficulty B．it difficulty C．that difficult D．it difficult 15、He is fifty , but doesn’tA．look at it B．look for it C．look it D．look him16、It was who telephoned me yesterday.A．him B．his C．himself D．he17、The sentence is wrong.A．its B．it C．itself D．it’s18、is no doubt that he will succeed in his experiment.A．It B．This C．That D．There19、It seems John’s not coming after all.A．this B．that C．if D．to20、was a handbag that John gave Mary at Christmas.A．It B．This C．That D．Such21、Was the room the famous writer had ever lived in?A．that, it B．it , that C．it , where D．that, which22、is said that he has been to many places in the United States.A．This B．He C．It D．That23、What you want me to do?A．it is B．that C．is this D．is it that24、Is not important who will go?A．it B．that C．this D．×25、Why is it everyone thinks he’s a thief?A．because B．as C．when D．that26、being Sunday, the library was closed.A．What B．It C．That D．This27、Is believed he is ill?A．it, that B．he, that C．it, if D．he, for28、is known to us Mary dances best.A．She, ×B．It, that C．It, she D．She, who29、“What’s this?”“ a flag.”A．This is B．That’s C．It’s D．Its30、Jack is ill. Have you heard about ?A．him B．it C．this D．thatThere be 结构31、Is a typewriter in the room?A．he B．there C．it D．has32、There’s no one in the house, is ?A．it B．he C．there D．they33、must be something wrong.A．It B．He C．There D．They34、there anyone around?A．Was B．Were C．There D．Has35、used to be a church round the corner.A．Here B．There C．It D．It is36、It is reported that is going to be a storm.A．it B．there C．×D．the weather37、There still a lot of work to be done before the house is ready for occupation.A．are B．were C．is D．have38、There is a girl for the bus.A．to wait B．waiting C．waited D．wait39、There a pine tree at the top of the hill.A．stands B．lies C．lives D．has40、will be a good film on at the Rex next week.A．There B．It C．That D．This改错,下列每句所给的选项中，各有一项是错的，请指出并改正。

it的用法知识点总结

it的用法知识点总结IT (Information Technology) 是指信息技术，是指利用计算机和通信设备来对数据进行处理、存储和传输的技术。

IT技术已经深刻地改变了我们生活的方方面面，已经成为现代社会不可或缺的一部分。

从企业管理到个人生活，IT技术已经渗透到了各个领域。

本文将对IT的使用进行总结，包括IT的应用范围、IT的发展历程以及IT的主要应用技术等内容。

1. IT的应用范围IT的应用范围非常广泛，几乎包括了我们生活的各个方面。

在企业管理方面，IT技术被用于数据分析、资源管理、企业内部通讯等方面，极大地提高了企业的管理效率。

在教育领域，IT技术被用于数字化教育资源的开发和管理，提高了教学效率，丰富了教学内容。

在医疗领域，IT技术被用于病例管理、影像诊断等方面，提高了医护人员的工作效率，改善了患者的就诊体验。

在交通领域，IT技术被用于交通控制、交通信息提供等方面，提高了交通的效率和安全。

在娱乐领域，IT技术被用于游戏开发、视频音频媒体的传输和处理等方面，为人们带来了丰富的娱乐体验。

在个人生活方面，IT技术被用于电子商务、社交网络、在线娱乐等方面，为人们的生活提供了诸多便利。

2. IT的发展历程IT技术的发展历程可以简单概括为以下几个阶段：(1) 初期阶段：计算机的发明和应用IT技术的起源可以追溯到20世纪初的计算机的发明和应用。

早期的计算机体积庞大，运行速度缓慢，主要被用于科学计算和军事应用。

计算机系统主要以大型机为主，对于大多数人来说，计算机是陌生的东西。

(2) 中期阶段：微型计算机的兴起20世纪70年代，个人计算机开始出现，标志着IT技术的中期阶段的开始。

微型计算机的出现使得普通人也能够接触到计算机，并开始在家庭和教育等领域得到广泛应用。

随着计算机硬件性能的不断提升和软件技术的快速发展，计算机已经成为了人们日常生活中不可或缺的一部分。

(3) 现代阶段：互联网的普及和移动设备的普及20世纪90年代，互联网的普及和移动设备的普及使得IT技术的应用范围得到了进一步扩大。

人教版高中英语【选修六】[知识点整理及重点题型梳理] it的用法(1)

人教版高中英语选修六知识点梳理重点题型（常考知识点）巩固练习it的用法（1）概念引入小词it是我们学英语之初就学会的，是不是感觉它似乎有点无所不能，经常出现呀？那么我们是不是已经了解了it的用法了呢？本单元和下单元我们就把it的用法做一小结。

先看这些句子，想想it的用法是什么？1. It is a beautiful day here and I am sitting under the big tree at the end of the garden.(表天气)2. It seems amazing that at my age I am still fit enough to cycle 20 kilometres in anafternoon.(代替that从句作主语)3. It’s my birthday in two weeks’ time and I’ll be 82 years old!(表时间)4. Your mother tells me that you started smoking some time ago and now you are finding itdifficult to give it up.(第一个it代替to give it up作宾语；第二个it代替上文中“吸烟”的事) 下面我们就先学习it作为代词和形式主语、形式宾语的用法。

用法讲解代词it1. 作人称代词人称代词it是有实义的，是单数第三人称代词。

主格与宾格相同。

2）替代前文中的this, that；This is your plan? Will you hand it in? 这是你的计划？你要交上去吗？3）指代婴儿、小孩或性别不明的人。

英语中it的语法知识点总结

5. It doesn’t matter whether ( if ) ...是否…没关系 It doesn’t matter if they are old. 6. It looks ( seems ) as if ... 好像… It seemed as if he were dying. It looks as if he is ill.（真的病了） It looks as if he were ill. （没有生病）
In the end, it’s not the years in your life that count. It’s the life in your years. – Abraham Lincoln 到头来，你活了多少岁不算什么，重要的是你是如何度过这些岁月的。——亚伯拉罕•林肯
The use of “ it ”
Sentence patterns:
1.I like (enjoy, hate…) it when…. 2.I would appreciate it if… 3.…see to (depend on…) it that…
I hate it you can dance so well but I can't. I would appreciate it if you lend me some money. I enjoy it when we are bathing in the sunshine. He decided on it where we would go this weekend.
Key points
1
4
代词
2
形式主宾
3
强调句型
时间句型
一、it 做代词:

中考英语it的常考句型及知识点归纳(附练习题)

中考英语it的常考句型及知识点归纳（附练习题）一、it 作人称代词的用法1.指事物作为人称代词，it 可以除人以外的一切事物或动物。

如：I dropped my watch and it broke.我把手表掉在地上摔坏了。

It's hard work, but I enjoy it.工作很辛苦，可是我乐意干。

“Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。

2.指人it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。

如：Is it a boy or a girl?是男孩还是女孩?There is a knock on the door. It must be the postman.有人在敲门，一定是邮递员。

【说明】在答语中，常用来指本人，如说It's me。

3.代替某些代词代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。

如：“What's this?”“It's a new machine. ”“这是什么?”“是一种新机器”。

Nothing is wrong, is it?没出什么问题，是吗?二、it 作非人称代词的用法1.基本用法it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。

如：It's too late to go there now.现在去那儿已经太迟了。

It rained all day yesterday.昨天下了一天的雨。

It can get very hot here.这里有时会很热。

2.用于某些句型It's time for sth.该做某事了。

It's time to do sth.该做某事的时候了。

It's time for sb to do sth.某人该干某事了。

高中英语语法知识之It的用法总结

高考英语语法知识之It 的用法总结1．It is + 被强调部分 + that ...该句型是强调句型。

将被强调的部分放在前面，其它部分置于that之后。

被强调部分可以是主语，宾语，状语。

强调的主语如果是人，that可以由who换用。

如果把这种句型结构划掉后，应该是一个完整无缺的句子。

这也是判断强调句型与其它从句的方法。

It was they that (who) cleaned the classroom yesterday. It was in the street that I met her father.2．It was not until + 被强调部分 + that ...该句型也是强调句型。

主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说是 not ... until ... 的强调形式。

It was not until she took off her dark glasses that I realized she was a famous film star.= Not until she took off her dark glasses did I realize she was a famous film star.= I didn’t realize she was a famous film star until she took off her dark glasses.3．It is clear ( obvious, true, possible,certain....) that .....该句型中it 是形式主语，真正的主语是that 引导的主语从句，常译为＂清楚（显然，真的，肯定．．．）＂是主语从句最常见的一种结构。

It is very clear that he’s round and tall like a tree.= That he’s round and tall like a tree is very clear.4. It is important ( necessary, right, strange, natural...) that ...由于主句中的形容词不同，that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去。

【知识精讲】it用法大全

韩
老师大课来自堂【知识精讲】之 it 的用法大全主讲人韩东升
指事物
指人人称代词
代替某些代词
形式主语
it 非人称代词
形式宾语
指时间距离价值等
常见句型
一、人称代词it
用法指事物前文提到过的东西或事情指人性别不明的婴儿或确认某人的身份
I dropped my watch and it broke. Where is the dog? It’s in the bedroom. Is it a boy or a girl? There is a knock on the door. It must be Tom.
根据汉语意思完成句子。它是互相交流的一种好方法。 ______ ______ ______ ______to communicate with each other．
根据汉语意思完成句子。它是互相交流的一种好方法。 ______ ______ ______ ______to communicate with each other．
for sb 表示难易程度，可能性等外在的特征： easy, difficult, hard, impossible, possible, convenient
(2) It takes sb + 时间段 + to do sth. 某人做某事花了……时间
It takes years to master a new language.
2. 用于某些句型
It’s time for sth.
It’s time to do sth. It’s time for sb to do sth. It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时) It’s + 时间段 + since-从句. 自从……有一段时间了。 It’s + 时间段 + before-从句. 过多长的时间才……

形式主语知识点总结

形式主语知识点总结在英语中，形式主语的使用非常普遍，并且在日常用语和书面语中都可以见到。

了解形式主语的知识点对于提高英语语法水平和提高写作能力有着重要的意义。

下面我们就来总结一下形式主语的知识点。

一、形式主语的定义形式主语是指一个句子中作主语的不是一个具体的名词或代词，而是一个动词或动词短语的表述。

在句子结构中，形式主语通常用it来表示，这个it一般不是真正的代词，而是用来填补句子结构中的主语位置，使句子结构更加完整。

例如：1. It is important to learn English well.（学好英语很重要）2. It takes time to finish this work.（完成这项工作需要时间）上面两个句子中，it作为形式主语，填补了句子结构中的主语位置，而真正的主语是不定式短语to learn English well和to finish this work。

二、形式主语的用法形式主语主要用于以下几种情况：1. 当真正的主语是一个不定式短语时，可以用形式主语it来代替。

例如：It is important to learn English well.（学好英语很重要）2. 当真正的主语是一个动词短语时，可以用形式主语it来代替。

例如：It takes time to finish this work.（完成这项工作需要时间）3. 当真正的主语是一个that从句时，可以用形式主语it来代替。

例如：It is said that he will come tomorrow.（据说他明天会来）4. 当真正的主语是一个不定式短语、动名词短语或名词性从句时，可以用形式主语it来代替。

例如：It is a good habit to read books every day.（每天读书是一个好习惯）三、形式主语的注意事项1. 在表示天气、时间、环境和距离等情况时，形式主语it的用法很常见。

高考总复习：it用法及强调句型知识讲解

高考总复习：it用法及强调句型真题再现1. Bach died in 1750, but it was not until the early 19th century ______ his musical gift was fully recognized. （2015重庆高考）A. whileB. thoughC. thatD. after2. It was when we were returning home ________ I realized what a good feeling it was to have helped someone in trouble. （2015湖南高考）A. whichB. thatC. whereD. how3. How would you like ______ if you were watching your favorite TV program and someone came into the room and just shut it off without asking you? （2015浙江高考）A. themB. oneC. thoseD. it4. It is often the case ______anything is possible for those who hang on to hope. （2016江苏高考）A. whyB. whatC. asD. that5. You are waiting at a wrong place. It is at the hotel ____ the coach picks up tourists. （2016天津高考）A. whoB. whichC. whereD. that6. It is important to pay your electricity bill on time, as late payments may affect your ______.（2016浙江高考）A. conditionB. incomeC. creditD. status7. This is not my story, nor ______ the whole story. My story plays out differently.A. is thereB. there isC. is itD. it is1. C。

【初中英语】初中英语this,that和it用法

【初中英语】初中英语this，that和it用法【—this，that和it用法】下面是对英语中this，that和it用法的知识讲解学习，希望给同学们的学习很好的帮助。

这个，那个，还有它的用法(1)this和that是指示代词，it是人称代词。

（2）将此项用于靠近说话者的人或事物，将其用于远离说话者的人或事物。

例如：thisisaflower.这是一朵花。

(近处)那是一棵树。

那是一棵树。

（很远）(3)放在一起的两样东西，先说this,后说that。

如：这是我的钢笔。

那是铅笔。

这是一支钢笔。

那是一支铅笔。

(4)向别人介绍某人时说thisis…,不说thatis…。

如：蒂西舍伦。

海伦，这是西斯敦。

这是海伦，海伦，这是汤姆。

(5)thisis不能缩写,而thatis可以缩写。

如：这是伊莎贝克。

那是萨卡。

这是一辆自行车。

那是一辆车。

(6)打电话时，介绍自己用this,询问对方用that。

如：-你好！是格林小姐吗？你好，是格林小姐吗？-yes,thisis.who’sthat?是的，我是，你是谁？注意：虽然“我”和“你”在汉语中都有使用，但你永远不能说：iam。

，你是谁？(7)在回答this或that作主语的疑问句时,要用it代替this或that。

如：①-这是书吗？这是笔记本吗？-yes,itis.是的，它是。

②-那是什么？那是什么？-it’sakite.是只风筝。

我相信学生们已经掌握了上述内容和知识的这个，那个和它的使用英语。

我希望学生们能在考试中取得好成绩。