T h e r e b e句型用法归纳文档编制序号：[KKIDT-LLE0828-LLETD298-POI08]
There be 句型用法归纳
1. 定义：There be句型表示某处存在某物或某人。
2. There be句型结构中的is/are的选择：
(1) There is +单数可数名词/不可数名词+ 地点/时间状语.
(2) There are +复数名词+地点/时间状语.
there是引导词，在句中不充当任何成分，翻译时也不必译出。句子的主语是某人或某物，谓语动词be要与某人或某物的数保持一致。当be后是两个或两个以上的名词时，谓语动词要与跟它最近的第一个名词一致即采用就近原则。
eg. ① There is a bird in the tree. 树上有一只鸟。
② There is a teacher and many students in our classroom.
③ There are two boys and a girl under the tree.
3.句式转换：
(1)肯定句：There is/are +名词/sb. + 地点/时间状语
(2)否定句：There is/are +not +名词/sb. + 地点/时间状语
There be句型的否定式的构成和含有be动词的其它句型一样，在be后加上not即可。例如：
There are some pictures on the wall. →There aren't any pictures on the wall.
There is a bike behind the tree. → There isn't a bike behind the tree.
(3)：一般疑问句: Is / Are there+名词/sb. + 地点/时间状语
There be句型的一般疑问句变化是把be动词调整到句首，再在句尾加上问号即可，此为"调整法"。但同时要注意：当肯定句中有some时，要将
其改为any（否定变化也一样）。看看下面两句是如何"改头换面"的吧： There is some water on Mars. → Is there any water on Mars
There are some fish in the water. →Are there any fish in the water
(4)：特殊疑问句
There be句型的特殊疑问句形式有以下两种变化：
①对名词/sb.提问：用"Who/What + is +介词短语 "
注意：无论原句的名词是单数还是复数，对之提问时一般都用be的单数形式(回答时却要根据实际情况来决定)。如：
There are many things over there. →What's over there
There is a little girl in the room.→Who is in the room
②对地点状语提问：疑问词+ is / are+名词/sb.
例如：
There is a computer on the desk. → Where is the computer
There are four children on the playground. →Where are the four children
4. there be结构的时态
there be结构有不同的时态，而且可以和各种助动词或情态动词连用。如： There was a sport meeting in the playground yesterday.
There will be (=There is going to be) a new film show on Monday.
There is to be a concert at the school hall. 学校礼堂有场音乐会。
There have been a lot of accidents round here. 这里已经发生多起事故了。
He told me that there had been an argument between them. 他告诉我们之间发生了一场争论。
There will have been a definite result by Friday. 到星期五前就已经有明确的结果 There must be a mistake somewhere. 一定在什么地方有错误。
There must have been a rain last night, for the ground is wet. 昨晚一定下了雨，因为地是湿的。
5. there be结构的变体
该结构中，有时be还可以被live, lie, stand, happen, come, go等动词代替。如：
Once there lived an old fisherman in a village by the sea. 从前，在海边的一个村子里住着一个老人。
There seems little doubt that he is insane. 似乎没有多少疑问他的神经不正常。
6. there be的固定句型
There be +名词或代词+to do (+介词) 有某事要做
There be + some/no+ trouble/difficulty ( in) doing sth/with sth. 做某事(没)有困难 There be + some/no + doubt about/as to sth / that…对某事(没)有疑问
There is no sense/use/good/point (in) doing sth 做某事没有道理/用处/好处/意义 There is no need (for sb.) to do sth/that… (某人)做某事没有必要
There is no chance/possibility to do sth/of doing sth./that…没有做某事的机会/可能性
There was no arguing with her. 没法和她争辩。
There is a time when...有做某事的一段时间
There be＋sb.＋doing sth.＋地点/时间状语“有某人在做某事”例如：
There are several children swimming in the river.河里有几个孩子在游泳There is something wrong with……..
be句型与have的区别：
(1) 用法不同：there be 表示某个时间或地方“存在”某人或某物，而have表示主语“拥有”某人或某物，作宾语的某人或某物属主语所有。
(2) 结构不同：
there be + sb./sth. +时间/地点(副词或介词短语)；sb./sth. + have +sb./sth. There are some children in the garden.花园里有几个孩子。
She has three cars. 她拥有三辆汽车。(汽车是属于她的)
注：若是部分与整体关系时，有时用两种表达方式都可以。如：
A week has seven days. =There are seven days in a week. 一周有七天。
T h e r e?b e?句型用法归纳 一、1.?定义：There?be句型表示某处存在某物或某人。? 2.?结构：(1)?There?is?+?单数可数名词????? ?? ?(2)?There?are?+?复数可数名词? 动词要与主语（某人或某物）的数保持一致。 ?eg. ?①?There?is?a?bird?in?the?tree.???树上有一只鸟。 ②?There are?two birds?in?the?tree. ?树上有两只鸟。 4.当主语是两个或两个以上的名词时，谓语动词要与跟它最近的那个名词一致。（就 近原则） ?①?There?is?a?teacher?and?many?students?in?our?classroom.??我们教室里有一位老师和许多学生。（就近原则） ②??There?are?many?students?and?a?teacher?in?our?classroom.?我们教室里有许多学生 和一位老师。（就近原则） ?5.?There?be句型与have的区别：? There?be?句型和have都表示“有”的含义。区别如下：There?be表示“某处存在某物或某人”；have表示“某人拥有某物/某人”，它表示所有、拥有关系。 eg.?①He?has?two?potatoes.???他有两个儿子。? ??②There?are?two?potatoes under the bed.????床的下面有两个土豆。 二、一般疑问句?? ????There?be句型的一般疑问句变化是把be动词放到句首（首字母大写），再在句尾加上问号。?? eg.??There?is?a book on the desk. ?→?Is?there?a book on the desk??肯定回答：Yes, there is. /No, there isn’t. There are two books on the desk. 改成一般疑问句 肯定回答： 否定回答： 三、练习 ??1..用is或are填空? (1).? There?_____?a?book?and?two?pens?on?the?desk.?? (2).? There?____?some?water in?the?picture.?? (3).? There ?_____?some?cards?in?Jim’s?bag.? (4).? There _____?an eraser in the pencil box. (5).? There?_____?one?pupil in?our?school. ?(6).? There?_____ three footballs and a cap on the chair. 2.把下列的句子改成一般疑问句并作回答。 1. There is an orange in the box. are four hamburgers on the floor. is one strawberry and twelve pears under the chair. 七、阅读理解，选择正确答案（每空2?分，共8分） ?Lucy?is?my?friend.?She?lives?in?a?small?house?near?a?park?in?Canada.?I?am?ten,?L ucy?is?ten?,?too.?Lucy?tell?me?more?about?Canada.?I?know?Canada?is?such?a?big?coun try.?So?I?want?to?learn?English.?And?I?tell?Lucy?more?about?China.?Lucy?likes?China?
?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 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。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”) 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)
T h e r e b e句型详细讲解 Document number【AA80KGB-AA98YT-AAT8CB-2A6UT-
There be 句型 一肯定句：“There be+主语（某人/某物）+介词短语”，表示“（在）某地有某人/某物”。这里的be的单复数形式要采取“就近一致”原则，即合靠近be的主语保持一致。具体地说，there后面第一个主语，若是单数时，be就用is/was;若是复数时be就用are/were。如：There are three people in my family. 我家有三口人。 There is a pen and two books on the desk.书桌上有一支钢笔和两本书。 二．否定式：“There be +not+主语+介词短语”。如： There isn’t a boy in the room.房间里没有一个男孩。 There aren’t any books on the desk.书桌上没有书。 注意：“There be句型”的否定式的构成和含有be动词的其他句型一样，在be后加not或no 即可。 注意not和no的不同：not是副词，no为形容词，所以not a/an/any+n.相当于no+n.。 例如：There are some pictures on the wall. There aren’t any pictures on the wall. =There are no pictures on the wall. There is a bike behind the tree. There isn’t a bike behind the tree. =There is no bike behind the tree. 三．疑问式：Be there+主语+介词短语”。 肯定回答是：“Yes, there be.”否定回答是：“No, there+be与not的缩写形式”。如：—Is there a lamp in your bedroom在你的卧室里有台灯吗 —Yes, there is.是的，有。 —Are there any clock in the living room客厅里有钟吗 —No, there aren’t.不，没有。 四．特殊疑问句：“There be句型”的特殊疑问句形式有以下三种变化： 1.对主语提问：当主语是人时，用“Who+be+介词短语”；当主语是物时，用“What+be+介词短语”。注意：无论原句的主语是单数还是复数，对其提问时一般都用be的单数形式（回答时却要根据实际情况来确定）。如： There are many things over there. What’s over there There was a little girl in the room Who was in the room 2.对地点状语提问：提问地点用“Where+be+主语”。例如： There is a computer on the desk. Where is the computer There were four children on the playground.
There be 句型的几种特殊结构及其用法 There be句型是一种应用十分广泛和频繁的句型。但是对there be句型的多变的特点及其特殊结构的复杂性，并不是每个考生都熟悉了解。在大学英语四级考试题中也常常遇到这一句型结构的试题。 例如： Ann never dreams of _________ for her to be sent abroad very soon．（CET-4，1998．6-43） A）there to be a chance B）there being a chance C）there be a chance D）being a chance 该题的答案为B）。 动词 dream of 要求跟 V-ing 分词结构作宾语，更准确地讲是介词of后要求跟 V-ing 分词结构作宾语，there being a chance意为"有一个机会"；A）和C）两项均不符合句子结构的要求，所以不是答案选项，而D）项 being a chance 虽然是 V-ing 分词结构，但语义不通，故不能雪 又如： No one had told Smith about ____ a lecture the following day．（CET-4，2001．1-66） A）there be B）there would be C）there was D）there being 该题的答案为D）。介词 about 后要求跟 V-ing 分词结构作宾语，there being（a lecture）意为"有（一个讲座）"，而A）、B）和C）项内容均不符合结构要求，故不能雪 再如： It is fairly common in Africa for there to be an ensemble of expert musicians surrounded by others who join in by clapping，singing，or somehow adding to the totality of musical sound．（CET-4，1995．1） 该句子中出现了for there to be 的结构，如果按照上一题的解题思路去理解：介词后要求跟 V-ing 分词结构作宾语，那么，这一结构似乎是错的；但是，实际上此结构没有错，此处只能够用 for there to be，而不能用 there being。为什么呢？这就是本文想要解答的问题：there be 句型的特殊结构及其用法。笔者将 there be 句型的几种特殊结构及其用法进行归纳、总结如下，供读者参考。 一、there be句型与各种情态动词连用。 例如： There must be something wrong here． There might still be some vacant seats in the rear． There ought to be something with which to fill your stocking． 二、there be句型中的谓语动词be被be likely to be，happen to be，seem（to be）， occur等代替，用来描写事物。例如： ] There are likely to be more difficulties than they have been prepared for． There happened to be nobody in the room． There doesn’t seem to be much hope of our beating that team ． There seems no doubt that the general character of the landscape，the relative length of day and night，and the climate must all play a big part in determining what kind of people we are． There have occurred many great changes since we met last． 三、there be 句型中的谓语动词be被一些不及物动词代替，如 live，stand，exist，remain等，用来表示"静止、存在、有"。例如： There lives a family of five in the village． There remains nothing more to be done． There stands the Monument to the People’s Heroes at the center of the Tian’anmen Square． There exist different opinions on this question． 四、there be 句型中的谓语动词be被一些不及物动词代替，如 come，spring up，appear，emerge，arrive，enter，follow, 等，用来表示"突然出现"。例如：
it的用法及强调句型 it的用法 一、it作指示代词【完成句子】用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a new ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】(1) it; one; one (2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋ 名词； ④复数名词用those，相当于the ones。 【例句观察】— Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论3】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) It is 10 years since I graduated from college. (3) It / This/That is the first / second time that－从句(必须使用现在完成时)这是某人 第……次做了某事。 It / This/That was the first / second time that－从句(必须使用过去完成时) 例：①It is the second time that she has visited the Great Wall. ②This was the first time that I had come late to school. (4) It was ＋时间点＋when －从句 例：It was evening when we got home. ＝It was evening in which we got home. (5) It was / will be ＋some time ＋before －从句 例：①过了5年他们才从北大毕业。 It was five years before they finally graduated from Beijing University. ②不久，我们就要从我们学校毕业了。 It won't be long before we graduate from our school. 二、it作形式主语 1.代替主语从句 ①It is clear ( obvious，true，possible certain....) that ..... “清楚（显然，真的，肯定．．．）” ②. It is important ( necessary，right，strange，natural...) that ... that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。 It is important that we (should) learn English well.
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．．．）＂。 ⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that +(should ) do ＂据建议；有命令．． ⑸It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/... ) that that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。 小练一下： It is very clear that he’s round and tall like a tree. = It is important that we (learn) English well. It is necessary that he (remember) these words. It is said that he has come to Beijing. = It is reported that another earth satellite has been put into orbit. = It is suggested that the meeting ( put off). It was ordered that we (arrive) there in two hours. It is a pity that such a thing ( happen) in your class. It is a pity that he (be) ill. 2.作形式主语替代不定式 . ⑴It is kind ( of sb. ) to do sth.= sb be kind to do sth.一般都是表示人的特性的形容词。如： bad /brave /careless/ clever /cruel / foolish / good （好心的）/ honest/ kind / lazy / modest/ naughty/ nice（有教养的）/polite/ rude / silly / stupid / wise ，等。 Eg. It is kind of you to give me a hand. = ⑵It is necessary ( for sb. ) to do sth. .不定式的逻辑主语是由for引起。常见的形容词有： Important/ necessary/ natural/ easy / safe / common / normal / hard / difficult / dangerous/ unusual/ rare / impossible / pleasant Eg. It is important for her to come to the party.
There be 句型用法总结 There be 结构是英语中陈述事物客观存的常用句型，表示“有”，其确切含义是“存在”there 作为引导词，本身没有意义，用动词be的某些形式作为谓语动词，它的主语是用一些表示泛指或不定特指的名词词组，动词be和 主语的数必须一致。句子最后通常为表示地点和时间的状语。因此要表达“某个地方或某个时间存在什么事物或人”的时候常用“There be + 名词+ 地点（时间）这一句型。例如： There is a great Italian deli across the street. 穿过街道，有一家大的意大利熟食店。There are some students in the dormitory. 在宿舍里有一些学生。 一、There be 结构中的主谓一致 1.当动词be后所接的名词是单数可数名词或不可数名词时，be 应该取单数is；当其后所接的名词是复数的可数名词时，be用复数are。 There's a man at the door.门口有个人。 There is some apple juice in the bottle. 瓶子里有些苹果汁。 There are some strangers in the street.大街上有一些陌生人。 2.如果There be 后面是几个并列名词做主语时，动词be的形式和最靠近它的那个名词保持数的一致。 There is an ashtray and two bottles on the shelf. 架子上有一只烟灰缸和两个瓶子。There are two bottles and an ashtray on the shelf. 架子上有两个瓶子和一个烟灰缸。 二、There be 结构中的时态 1.There be 句型中动词be可以有一般现在时、一般过去时、将来时和完成时。 There is no harm in trying.不妨一试。 There were fabulous wildflowers in the hills last spring. 去年春天，山中有极美的野花。There will be a fine day tomorrow. 明天将是一个晴天。 There have been several private schools in our area this year. 今年，我们这里已经有好几所私立学校了。 2.There be 句型可以和各种助动词、情态动词连用。 There may be a cigarette in that box. 那只盒子里或许有支香烟。 There must be some cakes on the table. 桌子上一定有些蛋糕。 There used to be a hospital there before the war. 战前，那里曾经有家医院。 3.There be 句型也可以和这样一些的谓语动词连用：be going to 、seem to 、appear to 、used to、be likely to 、happen to …. There seem to be a few trees between me and the green. 在我与草坪之间好像有一些树。 There is gong to be a meeting tonight. 今天晚上有个会议。 There is likely to be a storm 可能有一场暴雨。 There happened to be a bus nearby. 碰巧附近有辆公交车。 There appears to have been a nasty accident. 似乎发生了一起严重事故。 4.there be 结构中除可以用be 外，还可以用其它动词。例如： There came a scent of lime-blossom. 飘来一阵菩提树的花香。 Once upon a time there lived a king in China. 从前中国有一个国王。
It的用法 一、Tell the functions for “it” in each sentence: 1、---What’s the weather together ---It is fine. 2. It is hard to communicate with him. 3. I find it hard to communicate with him. 4. It is Li that who cleaned the classroom. 5. It is a book. 二、It 用法归纳 1，指代it （1）.用作人称代词：指代物、整个句子 （2）用作非人称代词 2，形式it：（1）作形式主语（2）作形式宾语 3，强调it 4，特殊句型 5.在答语中指代this/that： 1).--- Whose book is that ---It’s mine. 三、特别注意： it, one和that作替代词的用法及区别 1. it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。 (特指，指代单数，指代物，同名同物) Can I borrow your pen—Sorry， I’m using it.
2. one代替前面提到的同类事物中的一个。该事物只能是可数名词,前面可以有冠词,也可以被this、that或形容词修饰,其后也可以有定语。（泛指，指代可数名词，指代人或物，同名异物） I have a bike. Do you have one Eg: (1).I bought a dictionary three years ago and I am still using______ now. (2) I bought a dictionary three years ago but I am going to buy a new _______soon. (3). that代替前面提到的同类事物中特指的一个。该事物既可以是可数名词也可以是不可数名词,必须要有后置定语,但不可以有前置修饰语。（特指，指代单数或不可数，指代物，后面有定语） The coffee produced in Brazil is more famous than __________in Mexico. 四：形式主语、宾语、强调句及其他
新译林5A 语法总结 there be 句型与练习 一.there be 句型总结 1.there is/are 表示某处有某物，there is后面接单数，或不可数名词，There are后面接可数名词的复数。 2.就近原则，靠近谁，就用谁的形式，单数在前用is，复数在前用are。 3.否定句，not 加在be 动词后面，遇到some变any 4.变疑问，be 句首站，there 跟在be 后面，遇到some变any。 肯定回答，Yes,there is/are No,there is/are not. 5.对数字提问，用how many +可数名词复数+are there 。。。？ 用所给词的适当形式填空 1.There is ______(a) orange coat on the chair. 2.There ______(be) some soup on the table. 3.There ______( be) three bears in front of her. 4.There ______(be) a pen and two rulers in basket. 5.There______( not) any cakes here? 6.There______(be) two glasses of juice on the table. 7.There______(be) a bird in the tree. 8.______(be) there _______(some) computer rooms? 9.How many ______(desk) and ______(chair) are there in the classroom? 10.How many classrooms _______(be) there in our school? 句型转换 1.There is some soup on the table. 否定句：_____________________________________________ 一般疑问句并作肯定回答______________________________________________ 2.There are forty doctors in the hospital. 划线部分提问________________________________________________________ 一般疑问句并作否定回答_____________________________________________ 3.There is a new library in our house. 否定句;________________________________________________________ 划线部分提问_____________________________________________________ 4.There are three computer rooms in our school. 划线部分提问_______________________________________________________ 5.There isn’t any bread on the plate. 改为肯定句；______________________________________________________ 6.There are some apples in the bag. 划线部分提问_______________________________________________________ 一般疑问句，并作肯定回答___________________________________________
第二章“It”用法及其句型和固定搭配讲解 "It" 用法及其句型和固定搭配，是高中英语语法的重点、难点，又是近几年高考的热点，因此应给予充分的重视，现将it用法归纳如下： 一、It用作实词 表达以下概念:指代前文提到的事物，前文中的this, that；替代前文中的内容；指代一位性别不明的小孩或未知的人；指代未指明但谈话双方都知道的那件事；指代时间、天气、气候、距离等自然现象…… 二、It用作形式主语 替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。 It 作形式主语的常见句型： 1. 代作主语的动词不定式，其句型为 (1) It be adj. (for sb.) to do sth. 此处adj. 通常为描述事件的形容词：easy, difficult, hard, necessary, unnecessary, possible, impossible, likely, unlikely, right, wrong, important, unimportant, legal, illegal, well-mannered, ill-mannered, polite, impolite, clear, obvious, certain, suitable, proper, fit, useful, useless, dangerous… 例It is illegal (for a teenager) to drive a car without a license. (2) It be adj. of sb. to do sth. 此处adj. 通常为描述人的形容词：kind, unkind, nice, rude, cruel, considerate, thoughtful, thoughtless, careful, careless, silly, foolish, stupid, clever, wise, crazy. 例It's kind of you to help me with the problem. (3) It替代作主语的动名词的常见句型 It's no good/use doing… It's (well)worth doing… It's (well)worth one's while doing/to do… It's (well)worth while doing/ to do 例It's no use crying over spilt milk. 2. It替代作主语的从句常见句型 (1) It is + noun +从句 例It is no secret that the president wants to have a second term at office. (2) It is adj. +clause It's surprising that…(should)………竟然…… It's a pity/shame that…(should)………竟然…… 例It's important that you should apologize to her for your rudeness.(=It's of much importance that you should apologize to her for your rudeness.) (3) It verb sb. + clause= It is v-ing + clause It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze /bother/concern/frighten/please/anger sb. that… 例It worried me that she drove so fast.(= It was worrying that she drove so fast.) (4) It verb (to sb.) that…= sb/sth verb to do (verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work out) 例It (so) happened/chanced that they were out.(= They happened/chanced to be out.) (5) It is v-ed that…=sb/sth is to do (verb=say, report, think, believe, hope, expect, agree, accept, decide, determine, intend, plan, understand, know） 例It is said that the couple have gotten divorced.(=The couple are said to have gotten divorced.) (6) It is v-ed that … (should)… (verb=demand, request, require, order, suggest, advise, recommend 例It is suggested that they should begin with the third question. 三、It作主语的句型 1. It takes sb. …to do…(=sb takes…to do…)某人用多长时间做某事 例It took the men a week to mend our roof.(= The men took a week to mend our roof.) 2. It's (just)(un)like sb. to do…（不）像某人做某事的风格 例It was (just) like him to think of helping us.
T h e r e b e句型用法归纳 1.定义：Therebe句型表示某处存在某物或某人。 2.Therebe句型结构中的is/are的选择： (1)Thereis+单数可数名词/不可数名词+地点/时间状语. (2)Thereare+复数名词+地点/时间状语. there是引导词，在句中不充当任何成分，翻译时也不必译出。句子的主语是某人或某物，谓语动词be要与某人或某物的数保持一致。当be后是两个或两个以上的名词时，谓语动词要与跟它最近的第一个名词一致即采用就近原则。 eg.①Thereisabirdinthetree.树上有一只鸟。 ②Thereisateacherandmanystudentsinourclassroom. ③Therearetwoboysandagirlunderthetree. 3.句式转换： (1)肯定句：Thereis/are+名词/sb.+地点/时间状语 (2)否定句：Thereis/are+not+名词/sb.+地点/时间状语 Therebe句型的否定式的构成和含有be动词的其它句型一样，在be后加上not即可。例如：Therearesomepicturesonthewall.→Therearen'tanypicturesonthewall.Thereisabikebehindthetree.→Thereisn'tabikebehindthetree. (3)：一般疑问句:Is/Arethere+名词/sb.+地点/时间状语? Therebe句型的一般疑问句变化是把be动词调整到句首，再在句尾加上问号即可，此为"调整法"。 但同时要注意：当肯定句中有some时，要将其改为any（否定变化也一样）。看看下面两句是如何"改头换面"的吧： ThereissomewateronMars.→IsthereanywateronMars? Therearesomefishinthewater.→Arethereanyfishinthewater? (4)：特殊疑问句 Therebe句型的特殊疑问句形式有以下两种变化： ①对名词/sb.提问：用"Who/What+is+介词短语?" 注意：无论原句的名词是单数还是复数，对之提问时一般都用be的单数形式(回答时却要根据实际情况来决定)。如： Therearemanythingsoverthere.→What'soverthere? Thereisalittlegirlintheroom.→Whoisintheroom? ②对地点状语提问：疑问词+is/are+名词/sb.? 例如： Thereisacomputeronthedesk.→Whereisthecomputer? Therearefourchildrenontheplayground.→Wherearethefourchildren? 4.therebe结构的时态 therebe结构有不同的时态，而且可以和各种助动词或情态动词连用。如：Therewasasportmeetingintheplaygroundyesterday. Therewillbe(=Thereisgoingtobe)anewfilmshowonMonday. Thereistobeaconcertattheschoolhall.学校礼堂有场音乐会。Therehavebeenalotofaccidentsroundhere.这里已经发生多起事故了。Hetoldmethattherehadbeenanargumentbetweenthem.他告诉我们之间发生了一场争论。TherewillhavebeenadefiniteresultbyFriday.到星期五前就已经有明确的结果Theremustbeamistakesomewhere.一定在什么地方有错误。Theremusthavebeenarainlastnight,forthegroundiswet.昨晚一定下了雨，因为地是湿的。 5.therebe结构的变体