It 引导的句型结构
it代词的用法
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。
高中英语中常用it固定句型结构
高中英语中常用it固定句型结构1. It was/will be long(时间one week/two years ...)+before从句。
译为“很久(一周/两年后……)才……”。
如:It will be long before he is back .很久以后他才回来。
2. It is/has been/was + some time + since从句. 译为“自从……以来已经有多长时间了”。
如: It has been three days since he was ill.他生病已经有三天了。
注意: 如果since从句中的谓语动词为延续性动词时, 应译为“自从不……以来已经有多长时间了”。
如: It is / has been seven years since I taught in this school. 我离开这所学校已经有七年了。
时态的把握:如果主句运用的是一般现在时或现在完成时,那么since引导的从句用一般过去时;如果主句运用的是一般过去时,那么since引导的从句常用过去完成时。
3. It + be + the +序数词+ time + that从句. 译为“是某人第几次做某事了”。
如:It is the first time that I have .come here这是我第一次来这儿。
注意:如果主句是一般现在时或一般将来时,从句用现在完成时;如果主句是一般过去时,从句用过去完成时。
4. It +be +具体时间+ when ...译为“当某事发生时,时间是在……”。
如:It was 10:00 when they arrived at the factory. 他们到达工厂时是十点。
5.It is (high) time that sb．did sth．该句型表示“某人现在该做某事了”，从句常用过去时（虚拟语气）。
如：It is high time that you got up.6．It is ＋adj．(＋for sb．／sth．) ＋to do sth．常用的形容词有：easy，hard，difficult，possible， important，impossible，necessary，good，bad，exciting， interesting，surprising 等。
It的句型及用法
It的句型及用法1）It XXX…据说/据报道/据信…2）It XXX…看起来好像…3）It XXX…重要/必要/可能…4）It is time to…是时候…5）It is up to…由…决定。
9.It还可以作为强调句型中的主语，强调句子中的某一成分。
It was John who won the prize。
not Mary.获奖的是XXX，不是XXX。
改写：1.当代替事物时，it与one需区分。
That vase is valuable。
It's more than 200 years old.That XXX。
The vase is more than 200 years old.XXX’XXX him that he should work harder。
XXX’t help.XXX’XXX him that he should work harder。
but her advice didn't help.2.it可代替指示代词this。
that。
1)--- What's this?---It's a pen.—这是什么？—是一支钢笔。
What's this?---This is a pen.2）--- XXX?---It's Mike's.—那是谁的书？—是XXX的。
XXX?---That book belongs to Mike.3.指示代词it，常用以指人。
1）Go and XXX.去看看是谁。
Go and see who is there.2）--- Who is making such a noise?—是谁发出这样的吵闹声？It must be the children.—一定是孩子们。
Who is making such a noise?—Is it the children。
---Yes。
it must be them.4.当说话者不清楚或无必要知道说话对象的性别时，也可用it来表示。
it用作形式宾语的四个特殊句式
it⽤作形式宾语的四个特殊句式it⽤作形式宾语的四个特殊句式?当不定式、动名词、从句等复杂成分⽤作宾语且其后跟有宾语补⾜语时，通常会在宾语补⾜语前使⽤形式宾语it，⽽将真正的宾语移⾄句末，此时it仍只起先⾏引导作⽤，本⾝⽆词义。
其基本结构为“动词+it+宾语补⾜语+不定式(动名词或从句)”。
如：Ifinditdifficulttodothejobwell.我发现做好这件事不容易。
Ithinkitbestthatyoushouldstayhere.我认为你最好住这⼉。
Wethinkitnousecomplaining.Hemakesitarulenevertoborrowmoney.Ithinkitnoneedtalkingaboutitwiththem.Hefeltitimportant?tolearn?Englishwell.能这样⽤的动词有：为"6123结构"。
6指主句中常⽤的动词：123考点）：1.动词据传闻，国防部长不久就要辞职。
等。
2.动词like,enjoy,love,hate，Wereallyappreciateitwhensheofferedtohelp.她来帮忙了，我们⼗分感激。
I’dpreferitifIdidn’thavetodo somuchwork.要是我不必做那么多⼯作，好就太好了。
3.动词+prep+it+that-从句。
that引导的宾语从句不能直接作介词的宾语。
如：Seetoitthatyou’renotlateagain.注意千万不要再迟到。
Looktoitthatthisdoesn’thappenagain.注意不要再发⽣这种事。
Ican’tanswerforitthathewillcome.我不能保证他会来。
Youmayrelyonitthathe’llcometomeetyou.你放⼼，他会来接你的。
Youmaydependonitthatweshallalwayshelpyou.（尽管放⼼，我们会随时帮你的。
“it”引导主语从句和“it”做形式主语还有强调句型的区别分别是什么？
“it”引导主语从句和“it”做形式主语还有强调句型的区别：it引导的主语从句，形式主语就是it，真正的主语在句子的后面，通常是to do的不定式短语。
而强调句的结构
it is/was+被强调部分+that/who+句子其余部分，结构词it is/was和that/ who都是没有实际意思的，只是构成句子结构的词而已。
这个强调句只能强调名词和代词，也就是主语和宾语，不能强调其他句子成分。
主语从句：It is kind of you to help me with my housework.
强调句：It is you who help me with my housework.
主语从句中it做形式主语的常见句型：It+be+形容词+主语从句，如：It is u ncertain whether he can come to Jenny’s birthday party or not. It + be + 名词词组+ 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question等，如：
It’s a pity that you missed the exciting football match.
It remains a question whether he will come or not.
It + be + 过去分词+ 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等，如：It is reporte that 16 people were killed in the earthquake.。
高考英语It引导的强调句型讲解
高考英语It引导的强调句型讲解一、考点分析表达强调的方式有很多，本章重点学习It引导的强调句。
强调句的考察主要体现在语法填空和翻译题型上。
难点在于该知识点会与其他句型混在一起考察，要准确区别。
二、专题详解一）结构结构详解：针对句子My brother met Li Ming at the railway station yesterday.进行强调1、基本结构强调主语：It was my brother that/who met Li Ming at the railway station yesterday.强调宾语：It was Li Ming that/who my brother met at the railway station yesterday.强调地点状语：It was at the railway station that my brother met Li Ming yesterday.强调时间状语：It was yesterday that my brother met Li Ming at the railway station.2、一般疑问句结构：对主语提问：Was it my brother that/who met Li Ming at the railway station yesterday?后面几句同上，只需将was提到it之前即可。
3、特殊疑问句结构：对主语提问：Who was it that met Li Ming at the railway station yesterday?注意：当用who提问时，为避免重复，连接词用that后面几句同上，用疑问代词/副词代替被强调部分即可。
【即学即用】1) _____ electricity plays an important part in our daily life ?A. Why was it thatB. Why is it thatC. Why is itD. Why it is that2) Who was it _____ wanted to see me just now ?A. t hatB. whoC. whenD. when3) _____ you met the foreigner from Canada?A. Where it was thatB. Who it was thatC. Where was it thatD. Where was that二）使用注意1、主谓一致It is your father who is wrong this timeIt is his parents who have come to China.主语谓语：保持一致总结归纳：主谓一致：被强调部分作主语时，其形式与谓语动词在人称和数上保持一致。
IT的翻译方法
IT的翻译方法一、I t 在下列句型结构中，略去不译1. It 用作无人称主语（impersonal subject）,表示天气、时间、距离等。
It is just six o’clock.（现在正好六点钟。
）2.it 用作形式主语（anticipatory subject）It is easier to roll something over a surface than to slide it.（在任一表面上滚动一个物体比滑动它容易。
）3. it 用作形式宾语（anticipatory object）We find it necessary using modern artificial materials for tall buildings.（我们认为，采用现代人造材料建造高层建筑是必要的。
）二、it 引导强调句型的译法在这种句型中it本身无词汇意义，但在被强调部分的前面加译“是”，“正是”，“只有”等字。
It is to reduce friction that roller bearings are used.（正是为了减少摩擦，才使用滚珠轴承。
）三、it 用作人称代词的译法1.it 代替上文所提到的事物，一般可译成“它”。
A new science, Radio Astronomy, has emerged, and it is very closely allied to astronomy,astro-physics and physics.（出现了一门新兴学科——无线电天文学，它与天文学、天文物理学和物理学关系密切。
）2. 英语中的多数状语从句可位于主句之前或之后，因此指代同一事物在主句中可用名词也可用代词；但汉语中的状语从句一般位于主句之前，而指代同一事物总是先出现名词后使用代词。
基于上述情况，it往往译成所代替的名词。
The light is slowed down as it goes through the lens.（当光线穿入透镜时，速度就减慢下来。
It引导句型结构
It 引导的句型结构1． It + be + adj. ( for sb.) to do sth. “〔某人来〕，做某事很⋯〞. It is important for us to learn English well. 我来，学好英很重要。
Exercises璐西来，解道数学很简单。
安娜来，个包太沉了。
2．It + be + adj. + of sb. to do sth. “某人做某事很⋯〞. It was foolish of her to waste money on such clothes.她真蠢，把都花在的衣服上。
Exercises你人真好，帮我个忙。
他真残忍，死了那么多无辜的人。
你真明，能想出么一个好法。
3. It + be + adj./n. + that ⋯“. It is very important that we (should) pay more attention to spoken English.重要的是，我更加重英口。
Exercises沮的是，他并没有通考。
激的是，支球最得了比的利。
4．It + be + n. +. It is no use crying over the spilt milk. 覆水收。
Exercises吸烟没有任何益。
5． It + be + some time + since⋯“从⋯ 起已有多〞 It is tenyears since he had left China他.走开中国已十年了。
6． It +be + (said, reported, believed⋯) + that⋯.It is said that he will leave for Beijing on Tuesday.7． It + be + time + ( that )⋯. 是做什么的候了。
It is time we get up.8. It takes (sb.) some time + ( for sb.) to do sth.It took three weeks for us to finish the work.9.It + be + the first/second⋯+ time + (that)⋯It’s the first time I’ve been here.It was the first time she’d been at a summer school.。
it 作形式主语句式结构
4. The news that ouiting.
5. The suggestion that students should learn something practical is worth considering.
6. It + be +形容词+ of sb. +动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。
某人和这些形容词可以构成主系表结构。如：
表语从句：
1. This is what I want to do.
2. The house is what he needs.
3. The question is how the people can find an effective way to store the sun’s heat.
4. The question is who can complete the difficult task.
It’s very kind of you to help me with the work.
=You are kind to help me.
It seemed selfish of him not to share his dictionary with others.
=He seemed selfish not to share his dictionary with others.
it做形式主语的19个句型
1.It is/was +被强调部分+ that/who ...该句型是强调句型。
被强调部分可以是主语，宾语，表语或状语。
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。
2. It is 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 glassesthat 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 staruntil 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 atree.=That he's round and tall like a tree is veryclear.4.It is important /necessary/right/strange/natural... that ...+(should) do该句型和上一个同属一个句型。
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。
it形式主语句型
“it”在英语中经常用作形式主语，尤其是在主语从句中。
形式主语用于表示主语从句，即一个句子作为主语，而“it”是这个句子的形式主语。
以下是几个使用“it”作为形式主语的常见句型：
1. It is + 形容词+ that + 主语从句
例如：It is clear that he has made a mistake.
解释：在这个句型中，“it”是形式主语，“that”后的句子是真正的主语。
2. It is + 名词+ that + 主语从句
例如：It is a fact that the earth is round.
解释：这个句型与上一个相似，但形容词被替换为名词。
3. It + 动词+ 主语从句
例如：It happened that he was late for the meeting.
解释：在这个句型中，“it”是形式主语，动词是主语从句的谓语。
4. It + be + 时间/距离+ before + 主语从句
例如：It will be two years before we meet again.
解释：这个句型用于表示在某个时间或距离之后会发生某事。
5. It is/was + 被强调部分+ that + 主语从句
例如：It was yesterday that he met his friend.
解释：这个句型用于强调某个时间或部分。
这些只是使用“it”作为形式主语的一些常见句型。
在英语中，还有其他更复杂或特定的用法。
It句型归纳最全总结
It 句型归纳总结I．It 作形式主语的句型①It + be + adj (kind , wise , careless, clever…) + of sb to do sthEg: It is wise of him to make such a decision.他做出这样的决定是明智的。
②It + be + adj(easy , safe , common , normal …) + for sb to do sth该句型中adj若为important, necessary, natural, possible, strange, vital, essential等可改为从句,从句用should+动词原形。
.Eg: It’s very dangerous for children to play with fire.It is important for us to learn English well. (= It is important that we (should) learn English well.)③It + be +V-ed( reported, believed, said, suggeste d…) + that 从句该句型中：⑴若V-ed为reported, believed, said等常译为“据报道”，“据认为”，“据说”。
⑵若V-ed为suggested, ordered, demanded, insisted等表示“建议”,“命令”的词，从句要用虚拟语气(should)+动词原形。
Eg: It is suggested that the book (should) be revised.It’s said that Tom has been back from abroad. (=Tom is said to have been back from abroad.)④It + be + n (a pity, a shame, a fact , good new s…) + that 从句:该句型中，从句一般用(should) + 动词原形，表示出乎意料，常译为＂竟然＂。
it引导的强调句
it引导的强调句
it引导的强调句，也称为强调句型，是由一个it + be动词（表示各种时态）+ 被强调部分（通常是名词或代词）+ 其他构成的句子。
它是一种用于凸显重点，使传达的信息更加清晰有力的句型。
it引导的强调句体现在以下三个方面：
1、it 在句子中扮演“形式主语”的角色。
与其他句式不同，这种句式中的it不指代具体的概念，而是作为句子的形式主语，本身没有实际意义，只是为了使整个句子结构更紧凑，从而使得被强调的部分更加突出。
2、it 引导的强调句是一种特殊的结构，它将被强调的部分置于句首，使得被强调的内容更加突出。
而且，它也能够有效地避免主谓重复，使句子更加简洁，突出重点。
3、it 引导的强调句的被强调部分可以是名词、代词、形容词、副词等，因此它能够用于不同的语法结构。
实例：
It was I who talked to him yesterday.
It is not the way, but the will that matters.
It was not until this morning that I realized my mistake.
It is not money but time that he lacks.
It was in this city that I spent my childhood.
总之，it引导的强调句是一种简洁而有力的句型，它能够凸显重点，使传达的信息更加清晰有力。
常用it作形式主语地句型结构
常用it作形式主语的句型结构◇It + be +形容词+ that-从句可用于此句型的形容词有: wonderful,true，good，right，wrong，（un）important，useless，surprising，clear，unusual，lucky，certain, necessary等。
如：①It is quite certain that he will be at the meeting.②It is surprising that he came late to school this morning.③It is important that we(should)study hard注意: 该句型中的形容词是（un）important, necessary等时，从句应为(should )+动词原形。
◇It + be + -ed 分词+ that-从句适用该句型的过去分词主要有: said,reported,announced,hoped,thought，told，believed，expected，decided，suggested,known等。
如：①It is hoped that one day they will have enough animals to set them f ree②It is well known that the earth goes around the sun.③It is suggested that the sports meeting (should ) be put off until next week.注意: 该句型的过去分词是suggested时，从句应为(should )+动词原形。
◇It + be +名词+ that-从句适用该句型的名词（词组）有: a pity，an honor，a good thing，a fact，a surprise，good news, one’s duty等。
It 的 13 个常用句型及其运用!书面表达必备!
It 的13 个常用句型及其运用！书面表达必备！It 的13 个常用句型及其运用it 虽然并不显眼，但只要运用得当，也能在书面表达中发挥出巨大的作用，给人以高大上的感觉。
本文在归纳其常用的句式结构的基础上着眼于在书面表达中如何恰当地运用it 的相关句型，以达到优化句子，增加文章亮点。
01一、it 句型的归纳：( 一) it 作形式主语的 6 个句型句型1. It is + adj. (=of n.) + for sb. to do sth. / that... 某人做某事是……的。
Will it be convenient for you to start work tomorrow? 你明天开始工作方便吗?It is vital /of great significance for students to take regular exercise. = It is vital /of great significance that students should take regular exercise. 定期进行锻炼这对学生来说太重要了。
句型2. It is a shame / pity that... 很遗憾……(1) It is a shame that some students should scribble and litterrandomly on the campus. 一些学生竟然在校园中乱涂乱画，乱扔垃圾，这真是太不应该了。
(2) It is a pity that I cannot go to see the movie on Saturday evening. 很遗憾，周六晚上我没办法陪您去看电影了。
说明： that 引导的从句为主语从句，从句中谓语动词的语气分两种情况：①表述的内容是事实，用陈述语气 , 如例句 (2) ；②若内容表明说话人的一种语气 / 情感则使用虚拟语气 , 如例句 (1) 。
it引导的强调句-四级语法
1．it引导的强调句型，通常形式为：It＋be＋被强调部分＋that／who＋其它。
这种强调句由普通陈述句转换⽽来，⽤来强调句⼦的主语、宾语或状语。
例如：Karl bought Marva a bicycle on her birthday．卡尔在玛⽡⽣⽇那天给她买了⼀辆⾃⾏车。
It was Karl that／who bought Marva a bicycle on her birthday．（强调主语）It was Marva for whom Karl bought a bicycle on her birthday．（强调间接宾语）It was a bicycle that Karl bought Marva on her birthday．（强调直接宾语）It was on her birthday that Karl bought Marva a bicycle．（强调状语） ______ she first heard of the man referred to as a specialist．?A）It was from Stephen?B）It was Stephen whom?C）It was from Stephen that?D）It was Stephen that （B4．1990．1－48，C对。
强调状语）她是从斯蒂芬那⼉第⼀次听说被称为专家的那个⼈。
It was the training that he had as a young men ______ made him such a good engineer．A）thatB）hasC）whatD）later（1999年全国⼤学⽣英语竞赛初赛试题，强调主语）A对。
正是他年轻时候接受的训练使他成为⼀名优秀的⼯程师。
（试⽐较： The training that he had as a young man made him a good engineer．）但是这种句型通常不⽤来强调表语，例如我们不说：＊It is a teacher that he is． 2．注意区别强调句中的that／who分句与定语从句：It was the student that／who asked the silly question．是⼀个学⽣问了这么⼀个愚蠢的问题。
It的用法(超全)
---------------------------------------------------------------最新资料推荐------------------------------------------------------It的用法(超全)用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点，因此在复习中应给予足够的重视。
句型归纳：1． It is ＋adj．(＋for sb．／sth．) ＋ to do sth．用于此句型的形容词有：easy， hard， difficult，possible， important， impossible，necessary， good， bad， exciting， interesting， surprising 等。
如：It is necessary to change your job． It was very hard for them to walk such a long way in the snow． 2．It is ＋n．(＋for sb．／sth．) ＋ to do sth．用于此句型的名词有：pity, shame, pleasure, ones duty, ones job, fun, joy, good manners, bad manners 等。
如：It is a pity for you to have missed such a wonderful play． It is bad manners for the young to take up the seats for the old． 3．It is ＋adj．＋of sb．＋to do sth．此句型中的形容词主要描述某人的品德、特征。
能用于该句型的形容词有：1 / 13kind, nice, wise, silly, polite, impolite, friendly, foolish, clever 等。
It的特殊用法
It的特殊用法一、作形式主语1．（1）It’s + adj.+ to do sth.It’s important to study English well.(2 ) It’s + adj. +that…It’s important/ necessary/ likely/ possible/ certain/…that…It’s likely that he will win the game.It’s certain that he will come this afternoon.2. It’s + v-ed + that…(1) It’s said/ thought/ believed/ supposed/ reported/ proved/ known…that…It’s known that the earth travels round the sun.= As is known to everybody, the earth travels the sun.= What is known to everybody is that the earth travels the sun.(2) It’s suggested/ advised/ proposed/ requested/ required/ insisted/commanded/ demanded/ ordered/…that…It’s suggested that she（should）finish her homework this afternoon.It’s required that I (should) go at once.3. (1) It’s + 名+that…常见的名词有：a pity, a fact, an idea, an honor, no wonder等It’s a pity that he can’t come to the party.It’s a fact that he didn’t pass the exam.It’s a good idea that we’ll go outing.It’s an honor that I was invited to the meeting.(It’s)no wonder (that) he always takes the first place in the exams.(2) It’s + 名+doing常见的名词有：use, goodIt’s no use crying.It’s no good crying over spilt milk.【谚语】牛奶溢了，哭也没用。
It构成的句型小结
It构成的句型小结一、It作形式主语的句型为使句子平衡，往往把it置于句首作形式主语，而把真正的主语（通常是不定式短语、动名词短语或主语从句）移至句末。
It 作形式主语的句型有：㈠it 代指不定式短语的句型1. It takes + (sb.) + sometime / some money + to do sth.做某事花去某人多长时间Just a minute, it won't take me long to change. 等一下,我很快就可以换好衣服。
It takes five minutes to walk there. 走到那里需要5分钟。
It took me three days to prepare for the examination. 我花了三天准备那次考试。
It takes a lot of money to buy a house like that. 买那样一幢房子需要很多钱。
2.It takes + 名词+ (for sb.) to do sth. 某人做某事需要… …It took great imagination as well as patience for Annie to teach me to speak.对安妮来说，教我说话需要极大的信心和想象力。
It takes time for them to prepare for the great changes that take place in space.他们需要很多时间准备应付太空中所发生的巨大变化。
3.It is + 形容词+ (for / of sb.) to do sth. 某人做某事是… …的for sb. 的句型常用于表示事物的特征特点，表示客观形式的形容词，如easy, difficult, hard, important, possible, impossible, comfortable, necessary, better等。
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It 引导的句型结构
1． It + be + adj. ( for sb.) to do sth. “（对某人来说），做某事很…”
E.g. It is important for us to learn English well. 对我们来说，学好英语很重要。
Exercises
对璐西来说，解这道数学题很容易。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
对安娜来说，这个包太沉了。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
2．It + be + adj. + of sb. to do sth. “某人做某事很…”
E.g. It was foolish of her to waste money on such clothes.
她真蠢，把钱都花在买这样的衣服上。
Exercises
你人真好，帮我这个忙。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
他真残忍，杀死了那么多无辜的人。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
你真聪明，能想出这么一个好办法。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
3. It + be + adj./n. + that …“
E.g. It is very important that we (should) pay more attention to spoken English.
重要的是，我们应该更加重视英语口语。
Exercises
沮丧的是，他并没有通过考试。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽
激动的是，这支球队最终赢得了比赛的胜利。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽4．It + be + n. + v.-ing
E.g. It is no use crying over the spilt milk. 覆水难收。
Exercises
吸烟没有任何益处。
⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽5． It + be + some time + since…“从…时起已有多长时间”
It is ten years since he had left China. 他离开中国已经十年了。
6． It + be + v.-ed (said, reported, believed…) + that….
It is said that he will leave for Beijing on Tuesday.
7． It + be + time + ( that )…. 是该做什么的时候了。
It is time we get up.
8. It takes (sb.) some time + ( for sb.) to do sth.
It took three weeks for us to finish the work.
9. It + be + the first/second…+ time + (that)…
It’s the first time I’ve been here.
It was the first time she’d been at a summer school.。