英语选修6unit3语法 it的用法
(完整版)人教版英语选修六高二unit3语法Grammar—it的用法(1)
Section_ⅢGrammar—it的用法(1)语法图解探究发现①It is a beautiful day here and I am sitting under the big tree at the end of the garden.②Your mother tells me that you started smoking some time ago and now you are finding it difficult to give it up.③It is never too late to mend.④It is no use talking to them.⑤It is said that he stole the money.⑥I think it difficult to learn English well.⑦We make it clear that speaking to the teacher in that way is not polite.⑧I don't like it when people talk with the mouth full of food.[我的发现](1)①句it表示天气，②句第一个it代替to_give_it_up作形式宾语；第二个it代替句中所说的“吸烟”的事。
(2)在句③④⑤中it用作形式主语，其中句③用在“It is＋形容词＋(for/of＋sb.)＋动词不定式(短语)”中，it指代动词不定式(短语)；句④用在“It is＋no use/good＋动名词(短语)”中，it指代动名词(短语)；句⑤用在“It is＋said/believed/reported＋that从句”中，it指代that 从句。
(3)在句⑥⑦⑧中it用作形式宾语，其中句⑥用在“动词＋it＋形容词＋动词不定式(短语)”中，it指代动词不定式(短语)，句⑦用在“动词＋it＋形容词＋that从句”中，指代that 从句；句⑧it用在某些特殊的句式中，指代when从句。
人教版选修六unit3 Grammar 代词“It”用法 思维导图 PDF版
“It” QQ 124360073 it “It”(1)This is our new car. I bought it yesterday.(2)1. Where is the cat? It’s under the bed.2. The baby cried when it was hungry.(3)Who is it? It’s me.(4)1. He smokes in bed and I don’t like it.2. It would be ideal if you could join us.(5)1. What time is it? It’s seven o’clock.2. It’s about 50 kilometers from here to my home.3. It is snowing. It was very quiet in the garden.(6)I cannot help it.“It”It's ++ that......; It's ++ to do......;1.It is important / difficult / necessary / possible / likely / natural /… + that…...It's ++that......; It's ++doing sth1. It is a pity / shame / duty / rule that…...2. (It is) no wonder that …3. It is a waste of time /money doing sth.It is no good/no use/no pleasure doing sthIt +(hit/strike/occure to sb/happen/matter/seem/appear)+that......It struck / hit sb that… “ ……”; It happened that… “ ……”It occurred to him that… “ ……”; It doesn’t matter that… “ ……”It seems (appears) that… …; It looks as if…It follows that… “ ...,”It's ++that......It is said/ reported/ believed/thought / recognized / understood that…it It’s…that… it’s…when…; it’s…since…; it’s/it will be…before…;1. It was some time ___________ we realized the truth.2. It was not yet eight o'clock ____________ he arrived home.3. That was really a splendid evening. It's years ____________ I enjoyed myself so much.4. It may be five or six years ____________ it is possible to test this medicine on human patients.“It”(think/ find/ feel/ consider/ make/ regard/ suppose) +it++()1. I find it difficult to do the job well.2. I think it best that you should stay here.(enjoy, like, dislike, love, hate, prefer, appreciate) +it + when (if)-1. I hate it if you say such things in public. I dislike it when you whistle.2. We really appreciate it when she offered to help. I’d prefer it if I didn’t have to do so much work.(depend on, see to, look to, insist on, stick to, answer for) +it + that-1.See to it that you’re not late again.2.Look to it that this doesn’t happen again.3. I can’t answer for it that he will come.4. You may rely on it that he’ll come to meet you.5. You may depend on it that he will help you.take it for granted that...""owe it to sb that...""1. I took it for granted that he would help us.2. I owe it to you that I am still alive.“It”take it easy It doen'st matter Keep it a secretI can't help it.I got it.Go for it.give it a trymake it when it comes to ......It all depends.; It's up to you.believe it or not“it” BY WJC。
选修六 Unit 3语法 it的用法
Task 4 it在强调句型中 用在强调句型结构中，可以对句子中除谓 语动词以外的成分加以强调: It is / was + 被强调部分 + that (who) + 句 子其他成分 is smoking that has caused this ⑴ It ___________ lung cancer. 是吸烟导致了它的肺癌。 was not until his father came back ⑵ It ____________________________ that he went to bed. 直到他爸爸回来后 ，他才去睡觉。
Task 5 Practice
1. 2. 3. 4. 5. 6. 7. 8. 9. It was that I realized that counts complaining about It is reported hate it when It was the third time it possible depend on it that
我们应该学好英语，这是有必要的。 It is necessary that we should learn English well.
Task 2 it作形式主语 4._______________ It is reported that 22 people were killed in the grassland fire in Sichuan Province. (report) 据报道，四川省草场火灾中22人遇难。
【句型总结】 It occurred to sb that/how/when/where-从句.
Hale Waihona Puke 我突然想到，我把钥匙落在学校了。 It occurred to me that I had left the keys in the school. 我突然想到在哪里见过她。 It occurred to me where I had seen her.
选修6_Book3 grammar_(it的用法)book6_unit3
1. It is amazing that at my age I am still fit.
2. It is easier to fall than to rise.
3. It is no good crying over spilt milk.
4. I think it best that you should do more exercise.
1. It is a beautiful day. 2. It never rains but it pours. 3. It was time to quite smoking. 4. It is 10 kilometers to the castle. 5. It takes all sorts.
3. Most people believe smoking causes cancer. It is believed _________________________ that smoking causes cancer.
4. Don’t try to quit on a stressful day.
1. Giving up smoking is difficult to do. It is __________________________ difficult to give up smoking. 2. Some young people think they look attractive when they smoke. that some young people think It seems _________________________ they look attractive when they smoke. _________________________________ learn.
高中英语Unit3 it的用法Ⅰ课件新人教版选修6
02 课后训练
Ⅰ.句型转换(用 it 作形式主语) 1．We all knew that they had broken their promise. →_I_t_w__as__k_n_o_w_n_t_h_a_t _________ they had broken their promise. 2．If you want to give up smoking in a short time, it will be difficult. →__I_t _is_d_i_f_fi_c_u_lt_t_o_g_i_v_e_u_p_______ smoking in a short time. 3．Since you have spilt your milk, crying over it is useless. →__I_t'_s _u_se_l_e_ss_/_n_o_u_s_e___________ crying over spilt milk. 4．He has made up his mind. You needn't try to persuade him. →_I_t_'s_n_o_t_n_e_c_e_s_sa_r_y_________ for you to try to persuade him.
me how to use the computer. 4．The doctor thought ______it________ better for you to have a
holiday than to keep on working.
5．It never occurred to me _____t_h_a_t ______ you could succeed in persuading him to change his mind.
辽宁省北票市高级中学高中英语选修六unit3it用法
It用法一、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______ _______ _______ _________等自然现象。
二、It用作形式主语替代作主语的______ ______ _______,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.（2）It be adj. of sb. to do sth.(3）It替代作主语的动名词的常见句型：It’s no good/use ______…It’s （well)worth _______…It’s (well)worth one’s while _____- It’s (well）worth while _______2. It替代作主语的从句常见句型（1）It is + noun +从句（2）.It is adj。
+clauseIt’s surprising that… （______）………竟然……It's a pity/shame that…(______)………竟然…（3）It verb sb. + clause= It is v-ing + clauseIt+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bot her/concern/frighten/please/anger sb. that…(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)（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）四、It 作形式宾语用来替代作宾语的________ ________ ________，而把真正作宾语的从句、动词不定式、动名词置于句尾。
人教课标版高中英语选修6 Unit3_单元语法详解
Unit3 单元语法详解“it”的用法一、代词it1. 代替前文提到的事物。
如：——Where is the dog?-It's in the bedroom. ——狗在哪?——在卧室里。
2. 指性别不明的婴儿或不明确身份的人。
如：There is a knock on the door. It must be the postman.有人在敲门，一定是邮递员。
3. 代替指示代词this，that。
如：——What's this?——It's a new machine. ——这是什么？——是一种新机器。
二、it 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. 是某人该做某事的时候了It's(about/high）time+that从句某人该做某事了（从句谓语用一般过去时）It's the first(second)time+that从句某人第几次做某事（从句谓语用现在完成时）It's+时间段+since从句自从……有多长时间了It will be/was+时间段+before从句过多长时间才……(1）It is the first time that I have been here.这是我第一次来这儿。
(2）It is three years since the war broke out.自战争爆发以来有三年了。
(3）It will be half a year before I come back.还得再过半年我才能回来。
三、it用作形式主语当不定式、动名词、从句等复杂成分用作句子主语时，为保持句子平衡，通常把真正的主语后置，而在句首使用形式主语t。
如：(1）It's unknown when he will come.他什么时候来还不知道。
选修6_unit3_it_的用法
强调句基本结构：
It is/was + 被强调部分 + that/who + 句子的其他部分 如果强调的是人，可以用who代that。
Prof. Lin teaches us French.
It is French that Prof. Lin teaches us. It is Pro. Lin who/that teaches us French.
特殊句型：
It be + 时间 + before …
这个句型和上面句型中时间都是时间段，如long、 years、months、weeks、five days、three hours、 twenty minutes等。不过主句的时态多用一般将来时 或一般过去时。
It will be several years before we meet again.
It is up to sb. to do sth … 应由某人做某事。
It is up to you to decide whether we start or not.
2) 动名词
用no good，no use，great fun，a new experience等名词作表语； ______________ for him. It is fun working 为他工作很有意思。
我们要过好几年才能再见面。
It was not long before they set out for the front.
不久他们就出发去了前线。
be+时间段+before… “过多久…才”
It
be not+时间段+before… “没过多久…就”
高中英语模块六第三单元语法＂it＂的用法课件人教新课标选修六
It weighs only 2 kilos.
表示谁在做某事的句子： Who is it? ---It’s me. Her face lighted when she saw who it was. 用来泛泛的指某件事： It doesn’t matter. It is a shame, isn’t it?
形式主语
真正主语 Smoking is no good. 6. It is no good smoking. = ______ 形式主语 真正主语 he will succeed 7. It is likely that he will succeed.= That __________ 形式主语 真正主语 is likely.
Approaching “It” 1.It is a large sum of money． 2. It is a sunny daom Grandad’s house to
James’.
4. It is November 11, 2005. 5. It is 9 o’clock at night. 6. It is bad to smoke. 7. It is no good smoking. 8. It is likely that he will succeed.
1.努力学习英语很必要。
It is necessary to work hard on English.
对于我们来说，努力学习英语很必要。
It is necessary for __us to work hard on English.
To work hard on English is necessary for us.
3. You could suffer from bad health if you keep smoking. ( It is likely). It is likely that you could suffer from bad health if you keep smoking.
人教版本高中英语选修六Book6Unit3Grammar“it”的用法一
高中英语学习资料madeofjingetiejiGRAMMAR“it”的用法（一）【概括】it的用法好多，本单元我们主要学习它的基本用法以及它作形式主语或形式宾语的用法。
1.用作人称代词，指代上文提到的事物、动物、性别不明或没必需知道性其他人。
如：“Where’syourcar?”“It’sinthegarage.”Herdogwashowlingatthedoor,soheletitin.Thebabynextdoorkeptmeawake.Itcriedallnight.用作非人称代词，用来指代时间、日期、地址、天气、温度、距离、环境、状况等。
如：Itwas4o ’clockandthemailstillhadn’tcome.It’squitewarmatthemoment.It’sover200milesfromLondontoManchester.It’sgettingverycompetitiveinthecarindustry.3.用作形式主语，真实的主语常为不定式（短语）、动词-ing形式（短语）或名词性从句。
如：It’s impossibleforustogetthereintime.It’salwayssadsayinggoodbyetosomeoneyoulove.It’sstrangethatshenevermentionedthewedding.4.用作形式宾语，真实的宾语常为不定式（短语）、动词-ing形式（短语）或名词性从句。
如：Manypeoplefindithardtostopsmoking.Shefindsitboringstaying/tostayathome.Ifinditstrangethatshedoesn ’twanttotravel.【辨析】it,one和that1.it指物时，是明确指上文提到的那个事物。
it能够取代单数可数名词、不行数名词及前方提到的事情或状况。
选修六book6unit3grammar-it用法
s+v+it+ adj/n + to do/that…
我认为不浪费粮食是我们的责任。 _I _th__in_k__it__o_u_r_d_u_t_y_n_o_t__to__w_a_s_t_e_f_o_o_d__.
It + be + 过去分词 + 主语从句
注意：常见的过去分词有believed, expected, reported, said, shown，如果主句中的过去分词是表示请求，建议，命令等词如： suggested/ ordered / demanded /insisted / commanded... 等时 that 后的从句要用虚拟语气（should + 动词原形），should 可 以省略
If you can answer correctly, I will give you the thumbs-up .
为你点赞
The group getting the most thumbs-up will be the winner.
积赞最多
A riddle (谜语) Guess who I am . The answer is __?__. 代词我， 本意它， 即可指这又指那；
Unit 3 A healthy life Grammar：The usages of it
一.基本用法: it 做代词
1.用作人称代词，代替前面提到的人（不明确的）或 物,也可以指动物或婴儿.
选修六_Unit_3_Grammar-It_用法
It is suggested that the meeting ( should ) be put off. It was ordered that we ( should ) arrive there in two hours.
It is + n. (a pity, a shame, no wonder ... ) +that ...
It doesn’t matter whether ( if ) ...
该句型中whether (if) 引导的从句是真正主语，该句型常译为 “不论（是否）……没关系……”
It doesn’t matter if they are old.
It worries sb. that…… 某事使某人担心
take it for granted that…
keep it in mind that…
认为…理所当然的
把…记在心里…
We owe it to you that we finished the work on time. I leave it to your own judgment whether you should do it.
It is a pity that he is ill. 他生病了，真遗憾！
It takes sb. some time to do sth.
句型中的不定式是真正的主语，it是形式主语，句型中的直接宾 语是时间，常译为 “做……要花费某人……”
It took thousands of people many years to build the Great Wall.
It’s about an hour’s drive from here to Nanchang.
高二英语：Unit-3-第三部分：语法---It的用法-学案(新人教版选修6)
第三部分：语法---It的用法【学习目标】知识目标：学习代词it的各种用法。
能力目标：能熟练运用到各种场合，能够解答与之相关的习题，学会使用it有关的高级句型尤其是强调句型、it作形式主语。
【课前自学】代词的用法：一、作人称代词1、it代替前面（或后面）的单数名词或分句等所表示的事物。
e.g. You cannot eat your cake but have it.（it代替前面的_________）Although we cannot see it, there is air all around us. （it代替后面的_________）They say he has left town, but I don’t believe it.（it代替前面_________）2、代替有生命但不能或不必分阴阳性的东西（包括婴儿）。
e.g. Yesterday we saw a big tree. It was fully twenty metres high. （it代替前面的_______）The baby cried because it was hungry. （it代替前面的_________）3、在某些习惯说法中，可以代替人。
e.g. ---- Someone is knocking at the door, Peter.---- Who is _________? ---- _________ me.---- Who are singing? ---- It is the children.---- The light is still on in the lab. It must be the third-year students doing the experiment.4、it与one的区别：这两个词都可以代表前面说过的名词，但it用于同名同物的场合；one则用于同名异物的场合。
人教版英语选修6Unit 3 it的用法
④He was badly hurt, and
made his mother worry a lalk loudly in public places.
⑥I believe it no use
(read) without understanding.
答案：①it ②it ③It ④it ⑤It ⑥reading
答案：it
difficult to rescue the people trapped under the
课前语法感知
课堂合作探究
课后演练提能
答案
5．The Parkers bought a new house but before they can move in.
答案：it
will need a lot of work
课前语法感知
课堂合作探究
课后演练提能
④我发现让人们笑比让他们哭更难。
I
to make people laugh than to make them cry.
⑤我们都想当然地认为米勒能成功。
We all
that Miler could succeed.
⑥如果你及时打回来电话我会很感激的。
I would
答案：it
a point to attend those meetings
课前语法感知
课堂合作探究
课后演练提能
答案
4．(2015·北京高考)Once the damage is done, years for the farmland to recover.
答案：it
will take many
课前语法感知
课前语法感知
课堂合作探究
人教版 高中选修六第三单元语法it的用法(1)
人教版高中选修六第三单元语法it的用法(1)人教版高中英语选修六的语法武汉市新洲区新洲二中英语组张元利人教版高中英语选修六的语法It’s 10:08 It weighs only 3 kilosIt’s lovely It’s a large sum of money人教版高中英语选修六的语法It was a sunny day. Jack wanted to make an ____ appointment with Rose. They decided to go for a it was two miles walk to the park, though _____ It was comfortable to walk on the street. away. ___人教版高中英语选修六的语法it it Suddenly ___began to rain. They found __ hard to walk there. Then they took a bus home. Unfortunately ___ it went wrong. When they got home, they were wet through. Thus ___ it was a day that they would never forget. 人教版高中英语选修六的语法学习纲要The Usage 形式主语 of 形式宾语“it” 固定用法基本用法三个句型常见用法特殊用法三个句型人教版高中英语选修六的语法1.基本用法:1.it作人称代词1.1.it的最基本用法是作人称代词，主要指刚提到的事物，以避免重复: 1.2.也可以指动物或婴儿(未知性别的婴儿或孩子): 1.3.也可指抽象事物:人教版高中英语选修六的语法1.基本用法:2.非人称代词it2.1.指天气：2.2.指时间:2.3.指环境:3.作指示代词:可用来代替this ,that.BACK人教版高中英语选修六的语法学习大纲that 从句——虚拟语气… possible It is / was + adj. necessar y + ( for sb. ) to do sth. / clause 逻辑主语的特性important (of sb.) … … that 从句——虚拟语气 one’s duty It +is /was + n. a pity + ( for sb. ) to do sth. / that an honour … … said/reported/noticed It is / was p.p + that-clause suggested/ordered that 从句——虚拟语气…2. it 用作形式主语人教版高中英语选修六的语法2. it 用作形式主语2.1 作形式主语替代不定式1). It takes sb. ... to do sth. ;做...要花费某人..;2). It is kind ( of sb. ) to do sth.3). It is necessary ( for sb. ) to do sth4).It +is /was + a pity ( for sb. ) to do sth.人教版高中英语选修六的语法2. it 用作形式主语2.2.作形式主语替代ing形式It is no good (use ) doing sth. 该句型中的真正主语是动名词短语，主句中的表语可以是no good,( not any good ),no use,( not any use ),no fun, useless,a waste of time d+doing sth.It is no good learning English without speaking English.人教版高中英语选修六的语法2. it 用作形式主语2.3 代替主语从句 1)It is + adj. +that从句① It is clear ( obvio us,true,possible,certain....) that .....“清楚(显然，真的，肯定...)” ②. It is important ( necessary,right,strange,natural...) that ...人教版高中英语选修六的语法2. it 用作形式主语2)It is +v-ed +that 从句① It is said (reported, learned....) that ... 据说(据报道，据悉...)“。
人教版选修六Unit 3 语法：it的用法
Grammar：The use of “it” 学案Step 1 lead-in一．Translate the proverbs.1.It’s never too late to learn.________________________________2. It never rains but it pours(泼水).________________________________3. It takes three generations to make a gentleman.________________________________4. It is easy to open a shop but hard to keep it always open.________________________________二．Discover it and analyze its components in sentences.1. It rains heavily.2. It is 20 kilometers from Granddad's house to James’.3. It is November 11, 2005.4. It is 9 o’clock at night.5.It'll be lovely in the garden tonight．6. It is bad to smoke.7. I think it important to learn English.Step 2 Grammar learning考点一：it用作代词Read and analyze the sentences.1.It is Friday today.2.It was very cold last Monday.3.It is about 8:30 now.4.It is about 25km from Longxian to Bazi.5.It lies in the south of Shaoguan city.6.It is 40°C ! You got a high fever!Conclusion(一): it 可以用作非人称代词, 表示_____,_____, ______, ______, ______, ______等。
英语选修6 unit3语法 it的用法
= We seem to have made a mistake.
8. It vt+ 宾语+
that-clause to do sth.
It requires a lot of patience that we teach them English. It requires a lot of patience to teach them English
第三类：It is... that从句.(有4种) 4. It + be + adj. + that从句.
It is very clear that he’s round and tall like a tree.
It is certain that everything will get on well due to our hard work.
第一类：It is ...to do. (有2种)。 第二类：It is... doing. (有1种) 第三类：It is... that从句.(有5种)
it 作形式主语
第一类：It is ...to do. (有2种)。
1. It is/was +形容词+(for/of sb.)+to do sth. 用for 还是of的规则：如果形容词是描述事物的， 如difficult, easy, hard, important, dangerous等用for; 如果描述的是人物的性格、品质，如good, nice, clever等则用of.
It is said that he is a thief.
= He is said to be a thief.
人教高中英语选修六 Unit3 A Healthy Life --it的用法
It is about 25km from Longxian to Bazi.
It lies in the south of Shaoguan city. It is 40°C ! You got a high fever! Conclusion(一): it 可以用作非人称代词, 表示 天_气____,时__间___, _距__离___, _地__点___, _温__度___, __日__期__等。
82 years old. 4. Your mother tells me that you stared smoking
some time ago and you are finding it difficult to give it up. • 5. I know how easy it is to begin smoking and how tough it is to stop.
It is great fun/worthwhile working for him. Do you think it is worthwhile quarrelling with him？
• It is said that Tom is a faithful worker.
= Tom ___ _i_s__s_a_id_ _t_o_ abefaithful worker. • It is reported that the murderer has been
The use of “it”
Learning Aims • Learn and grasp the usage of “it”. • Learn to use some important
Unit3 Grammar：it的用法课件人教版选修六
形式宾语特殊用法2
动词 +it + to sb. + that…
owe it to sb. that…把…归功于… leave it to sb that…把…留给某人去做 take it for granted that 把…想当然 keep it in mind that… 把…记在心里
他想当然地以为女朋友会再回来。
p.p.(过去分词) said known + that-clause believed
…
It is kind of you to say so. = You are kind to say so.
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.
四、it固定用法:
1. It的一些习惯用法
How is it with your study? 学习好吗？ That’s it . 这就对了。 It went hard with him. 他身遇不幸。 It is all over with me. 我完蛋了。 We must fight it out.我们必须坚持到底。 I can’t help it. 我没有办法。
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）
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二、it + be + n./ adj. + doing sth.
t’s no use/useless doing sth 做某事是无用的 t’s no good/a waste of time/fun/worth doing sth
It's useless thinking too much. It'er games.
Grammar
The use of “it”
it 真实身份大揭底 Ⅰ.用作人称代词 Ⅱ.用作非人称代词 Ⅲ .It 作形式主语 Ⅳ. It 作形式宾语 Ⅴ. It 用在特定句型中
Ⅵ. It 用在固定习语中
“It”用作“人称代词”
Ⅰ.用作人称代词
1. It 指代上文中提到的物、事。（简化语言，避免重复） eg. My pen is missing. I can’t find it. Xi’an is a beautiful city, isn’t it? Is this your dog？No, it isn’t.
3. it + be + V.ed+ that从句.
It is reported that many people died in the earthquake. It is suggested that the students (should) build up their strength.
eg. It seems that he will be back in a few days. It happened that he met his teacher in the street.
“It”用作“形式宾语” （ 2）
Ⅳ. It 作“形式宾语” 1. “某些谓v. + it 宾语 + 宾补 （n.\adj.）+ 真宾（to do \doing\that从句）”
“It”用作“非人称代词”
Ⅱ.用作非人称代词
“it”表示天气、时间、日期、距离、价值、度量、温度、 环境，季节，情况等（称为非人称的it）： It is a bit windy. (指天气) （指时间 It was nearly midnight when she came back. It„s May 1, 2017. （指日期） It is 150 yuan. （指价格） It is summer now. (指季节)
It is about 5 kilograms. （指度量） It was very quiet in the café. (指环境) It is half an hour‟s walk to the city centre (指距离) How is it going? (指情形)
“It”用作“形式主语” （8）
常用的v.有: think, believe, make, find, consider, feel,etc. I think it no use arguing with him. I found it very interesting to study English. He made it clear that smoking is banned in the school. He considers it his duty to help those at risk.
It's kind of you to help me with the problem.
It’s generous(adj. 慷慨的) of you to donate su a large of money to charity.
（ 此处adj. 通常为描述“人”的形容词： brave, kind，unkind，nice，rude，considerate， careful，careless，silly，foolish，stupid，clever， wise，crazy.）
adj.：legal，illegal，polite，impolite， possible, impossible , clear，obvious， evident , certain，suitable，fit，useful， useless，etc.)
② it + be + adj. + of sb.+ to do sth.
1. it ：形式主语 2. it ：形式主语 3. it：形式主语
to do ：真正主语（3） doing ：真正主语（1）
that从句：真正主语（4）
一、
① it + be + adj. (+ for sb.）+ to do sth
“（对 sb.来说，）做某事是…的。”
It is important for us to learn English well
It is no wonder that you are breathless. It is a pity /shame that he should get into the habit of abusing alcohol.
（其中，当n.为a pity (a shame /an honor /a Surprise... 等表示出乎意料时，常译为“竟然”， 则 that 从句中的v.用虚拟语气，即should + do） 。 没有这种意义时，则不用虚
3. The doctor advised Vera strongly that she should take a holiday, but ______ didn’t help. (全国卷III) A. it B. she C. which D. he 4. I’d appreciate ______ if you would like to teach me how to use the computer. (山东) A. that B. it C. this D. you
2. 指代性别不明的人（常指baby）/ 说话人不清 楚性别的人（常在打电话、敲门等时）: eg. The baby cried because it was hungry. There is a knock at the door. It must be the milkman. 3. 代替上文中的指示代词this/that --Who is that over there? --It’s Helen.
It is strange that he shouldn‟t feel ashamed of his behavior. （当adj.为strange/surprising /natural/ important/necessary等时，that 从句中即 (should ) + do）
2. it + be + n. + that从句.
“据… / 有人（人们）…”
( 其中，当v.为insist;command, order;suggest, recommend;require, request, demand等时， that 从句中的v.用虚拟语气，即( should ) + do
4. it + Vi+ that从句.
( 常用v.有happen, seem, appear ,looks, 等.)
Exercises Time
I. 单项选择 1. He didn’t make ____ clear when and where the meeting would be held. (天津) A. this B. that C. it D. these 2. ____ is our belief that improvements in health care will lead to a stronger, more prosperous economy. (浙江) A. As B. That C. This D. It
eg . It's no use crying over spilt milk.
三、1. It + be + adj. + that从句.
It is very clear that he‟s round and tall like a tree.
It is certain that everything will get on well due to our hard work.
2. 某些谓v.+ it 形宾+ 真宾（that/when/if 从句） （常用v. 用：like, love, appreciate;dislike, hate depend on , count on; see to , make sure; take…for granted等。）
eg. I don’t like it when one speaks with his mouthful. eg. You can depend on it that he will come here on time. eg. I would appreciate it if I were admitted to the school football team. eg. I hate it that you speak when your mouth full. eg. Don’t take it for granted that famous brands mean high quality.
③ it + be + n. + to do sth.
“做某事（真）是个…” 常用n.有：good idea / a pity/ a shame等
It is a good idea to quit smoking before one comes pregnant.