高二英语选修6Unit3语法项目It的用法讲解 新课标 人教版
(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。
高中英语 it的用法.unit3 a healthy life课件 新人教版选修6
It was in 2001 that I went to university.
(强调状语)
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6.用于特殊句型中
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6. 用于某些习语 make it 及时赶到;成功;办成
e.g. You can make it if you hurry. 如果 你赶快还可以及时赶到。 You needn’t worry; he will make it.你 不必担忧, 他会办到的。
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Ex. 2 P21
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4. It 做形式宾语
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I found it very interesting to study English. 我发现学英语非常有趣。
He made it clear that he was not interested in
④ It never rains but it pours(泼水). 不鸣那么已, 一鸣惊人。
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⑤ It is easy to open a shop but hard to keep it always open. 创业容易守业难。
⑥ It takes three generations (代) to
It is against the law to do that. 这样做是违法的。
It gives me great pleasure to see the movie. 观看电影让我很快乐。
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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.
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。
人教版高中英语选修6 Unit3 Grammar and Writing专题课件
3．动词(短语)＋it＋that/when/if ... 常用在此结构中的动词(短语)有： enjoy, like, love, dislike, appreciate, hate, prefer, ask for, answer for, see to, depend on, insist on等。 See to it that the goods are kept well. 注意这些货物要保存好。 I like it when the weather is fine in autumn. 我喜欢秋高气爽的天气。
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it的用法(Ⅰ)
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一、it用作代词 1．it作非人称代词，常用于指代时间、距离、自然现象、
量度、价值等。 It’s time to get up.(指时间) 到起床的时间了。 It’s going to snow.(指天气) (天)要下雪了。 It is a long way from my school to the hospital.(指距离) 从我的学校到医院(距离)很远。
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假如你是李华，你跟你的朋友Paul聊天，他表示学习压力很大， 请你给他写封信，给他提一些建议。 1．将自己的问题告诉老师和同学，请求得到他们的帮助。 2．不要总想着考试成绩，要多想想自己在哪些方面进步了，这 样就会给自己自信。 3．多做运动，运动可以帮助自己缓解压力，并且有助于睡眠。 4．你对他的祝福。 要求：1.文章必须包括以上所有内容，并根据需要，适当发挥。 2．词数：120左右。
/hoped/suggested/expected, etc. that ...
It is reported that 22 people were killed in the grassland
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.
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高二英语选修6Unit3语法项目It的用法讲解It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。
其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。
1．(NMET98) It was only when I reread his poems recently ___ I began to appreciate their beauty．A．until B．that C．then D．so正确答案：B 此题考查强调句，所以用that。
2．(NMET98) I hate____when people talk with their mouths full．A．it B．that C．these D．them正确答案：A 此题考查it作形式宾语的用法，所以选A。
3．(MET91，短文改错)David and I did not agree and David pointed to a path which he thought it would probably lead to a village．正确答案：去掉it，因为定语从句中已有宾语which。
一、要点点拔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。
1) －Who is the baby?－It‘s my teacher’s son．2) －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。
例如：1) It’s half an hour’s walk from here to our school．2) It‘s nice and warm here．3) But it's two o'clock now, and it's time for us to go to school．3．用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。
1).It 替代真正的主语——动词不定式短语.It is easier to say than to do .It is a good act to help the others.2).it 替代真正的主语——动名词短语,以动名词短语做主语的句子，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中.It’s no harm drinking running water in that area。
It’s foolish talking like that.3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类：① It is a pity (a shame ,a fact ,a wonder ,a good thing,etc. )that…It is a shame that he didn’t pass the exam.②It is strange ( surprising,obvious ,true, good,possible,clear,etc. ) that…。
It was clear that they had no desire for peace.③ It seems (happened ,turned out,etc.)that…It seemed that things were not as they expected.④ It is said ( decided ,expected ,etc)that …It is said that the tickets have been sold out .4.用作形式宾语。
当复合宾语中的宾语是不定式,－ing短语或从句往往用it作形式宾语,而将真正的宾语移至句末,句子重心后移。
1) We find it difficult to learn English well in such a short time．2) We think it no use crying over spilt milk．3) We made it clear when and where we were going to have the meeting．5．用于强调句型，即“It is/was＋被强调部分＋that/who/whom+其它”句型之中。
使用该句型有以下几点请注意：①强调句的谓语is或was永远用单数.It was yesterday that I met your father in the street．②不管被强调部分是哪种状语，只能用that连接，不得使用where、when等连词. It was in the street that I met your father yesterday．③被强调部分为人时，可用who(主格或宾格)和whom(宾格)代替that，用that也行。
1)It was your father that/whom /who I met in the street yesterday．2) It was I that/who met your father in the street yesterday．④强调句中也要注意主谓一致、人称一致和否定转移的问题。
1)It is they who are our friends．2) It was not until ten o'clock that we got home last night．⑤注意不要混淆强调句和其他从句。
It is was…that…为强调句标志，去掉后仍可组成一个完整的句子，只是没被强调,而其他从句一般不具备这一特征。
比较：1) It was ten o'clock when we got home last night．我们昨晚到家时已十点了。
2) It was at ten o'clock that we got home last night．我们昨晚是在十点到家的。
第一句不是强调句，when不可改为that,因为去掉it was和that后，只能组成“We got home ten o'clock last night．”这样一个不完整的句子；第二句是强调句，that不可改为when．二、常用句型及考点I. 形式主语型1. It is clear (obvious，true，possible，certain…) that…2. It is important (necessary，right，strange，natural…)that…掌握本句型，应该记住所列举的形容词，并且记住that后的从句应用虚拟语气(should+动词原形)，should可以省去。
3. It is no good (use) doing sth．4. It is a pity (a shame …) that…本句型中，that后的从句一般用虚拟语气 (should十动词原形)，should可以省去。
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。
5. It is time (about time，high time) that…本句型中that后的从句应该用虚拟语气。
6. It is the first (second…)time that…7. It is said (reported，learned…．)that…8. It is suggested (ordered…) that…本句型中的过去分词应该是表示请求、建议、命令等的词，that后的从句要用虚拟语气(should十动词原形)，should可以省略。
常译为“据建议；有命令……”。
9. It happens (seems，appears) that…10. It takes sb…to do sth．11. It doesn’t matter whether…12. It is kind (of sb) to do sth．本句型中的不定式如果需要逻辑主语，则须要前置介词of，而句型中的形容词必须是能表示逻辑主语特征的形容词，常见的有bad，brave，careless，clever，cruel，foolish，honest，horrible，kind，lazy，modest，naughty, polite，rude，silly, stupid，wise，wrong等。
13. It is necessary ( for sb) to do sth．14. It is (just) like sb to do sth．本句型为“某人(恰恰)是……样子”。
用来表示赞扬或不满，若用否定式，则表示怀疑。
例：It's like him to leave the work to others．他就是这样的一个人，把工作推给别人。
15. It is up to sb to do sth．本句型表示“谊由某人做……”。
II．强调句型It is+ 被强调部分+that/who…本句型中被强调部分可以是主语、宾语或状语。
强调的主语如果是人，that可以由who换用。
III．其他句型1. It is…since…本句型主句中用时间作表语，一般用现在时或完成时，since引导的从句常用瞬间动词的一般过去时态。
主句如用一般过去时，则从句用过去完成时。
2. It is…when…本句型中的when引导的是一个时间状语从句，主句中的it指时间，表语由具体的时间充当。
3. It looks (seems) as if．．．本句型中的as if引导一个状语从句，常译为“看起来好像……”。
如果与事实不相符合，则用虚拟语气．例1 It looks as if he is ill (真的病了) .例2 It looks as if he were ill (没有生病) .Exercises:一．单项选择1.It was at the gate ____ he told me the news.A. thatB. whatC. whichD. when2.Is ____necessary to tell his father everythingA. itB. thatC. whatD. he3.Was it in this palace ____ the last emperor died?A. thatB. in whichC. in whereD. which4.Is ____ possible to fly to the moon in a spaceship?A. nowB. manC. thatD. it5.Was it during the Second World War ____he died?A. thatB. whileC. in whichD. then6.Is ____necessary to complete the design before National Day?A. thisB. thatC. itD. he7.I don't think ____possible to master a foreign language without much memory work.A. thisB. thatC. itsD. it8.Does ____matter if he can't finish the job on time?A. thisB. thatC. heD. it9.It was not ____she took off her dark glasses ____ ,I realized she was a famous film star.A. when; thatB. until; thatC. until; whenD. when; then10.Tom‘s mother kept telling him that he should work harder, but ____didn’t help.A. heB. whichC. sheD. it11.____is a fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. It12. Is ________ possible to fly to the moon in a spaceship?A．now B．man C．that D．it13．Our food and service are better than ________ used to be.A．it B．we C．they D．them14．________ appears to me ________ the report must be truth.A．That; it B．It; that C．It; it D．That; that15．He feels ________ duty to help others.A．that he B．that his C．it he D．it his16．Take ________ easy. The roads are icy.A．it B．them C．us D．you17．The TV sets made in China are much better than ________ in Japan. A．that B．those C．them D．It18．—— Have you found the bike you lost yesterday?—— Yes, I've found ________ already.A．it B．that C．the one D．that one19.—— I'm looking for a flat.—— Would you like ____ with ____ garden?A．it; the B．it; a C．one; a D．one; the20．________ was ________ who I met in the museum this morning.A．It; him B．It; he C．That; he D. That; him21．It was in the rice fields ________ we had our League meeting. A．where B．that C．in which D．on which22．________ you come to the party so late?A．Why is it B．Why it isC．Why it is that D．Why is it that23．—— Were all three people in the car injured in the accident—— No, ___ only the two passengers ___ got hurt．A．they were; that B．there was; thatC．it was; who D．there are; who24．I don' t think ________ possible to master a foreign language without much memory work .A．this B．that C．its D．it25．It was not ________ she took off her glasses ________ I realized she was a famous film star．A. when; thatB. until; thatC. until; whenD. when; then26.It was not until 1920 ____ regular radio broadcasts began.A．while B．which C．that D．since27．________ is a fact that English is being accepted as an international language.A．There B．This C．That D．It28．It was about 600 years ago ________ the first clock with a face and an hour hand was made.A．that B．until C．before D．when29．It was only when I reread his poems recently ____ I began to appreciate their beauty.A．until B．that C．then D．So30．I hate ______ when people talk with their mouths full.A．it B．that C．these D．them31．—— Why don't we take a little break? —— Didn't we just have ________ ?A．it B．that C．one D．this32.Was it during the Second World War ____ he died？(MET88)A．that B．While C．in which D．Then33.Is ____ possible to fly to the moon in a spaceship？(MET88)A．now B．that C．it D．Man34.I don't think ___ possible to master a foreign language without much momory work．(MET90)A．This B．that C．its D．It35.___ is a fact that English is being accepted as an international language．(NMET95)A．There B．This C．That D．It36.It was about 600 years ago ___ the first clock with face and an hour hand was made． (NMET97)A．that B．until C．before D．when37.____computers play such an important part in our daily life?A．Why it is that B．Why is it thatC．Why was it that D．Why is it38. Was it during the Second World War _____he died?A. thatB. whileC. in whichD.then39. Is ____ necessary to take off our shoes when we enter the lab?A. everyoneB.thisC.herD.it40. Is ____ possible to fly to the moon in a spaceship?A.nowB.thatC.itD.man41. I d on’t think ___ possible to master a foreign language without much memory work.A.thisB.thatC.itsD.it42. She heard of a terrible noise, ___ brought her heart into her mouth.A.itB.whichC.thisD.that43. Alice received an invitation from her boss, ____ came as a surprise.A.itB.thatC.whichD.he44. Does ____ matter if he can’t finish the job on time?A.thisB.thatC.heD.it45.Tom’s mother kept telling him that he should work harder,but ____ didn’t help.A.heB.whichC.sheD.it46.The weather turned out to be very good, ___ was more than we could expect.A.whatB.whichC.thatD.it47.____is a fact that English is being accepted as an international language.A.ThereB.ThisC.ThatD.It48.I hope there are enough glasses for each guest to have _____.A.itB.thoseC.themD.one49.It was about 600 years ago___the first clock with a face and an hour hand was made.A.thatB.untilC.beforeD.when50.I hate ____ when people talk with their mouths full.A.itB.thatC.theseD.them51.It was only when I reread his poems recently____ I began to appreciate their beauty.A.untilB.thatC.thenD.so52.It is the ability to do the job ____ matters not where you come from or what you are.A.oneB.thatC.whatD.it53.It ____ you that ____ to blame.A.is;isB.is; areC.are;areD.are;is54.Was_____that I saw last night at the concert?A.it youB.not youC.youD.that you55.____ electricity plays such an important part in our life?A.Why is it thatB.Why is itC.Why it is thatD.Why is that56.It was ____ he said _____ disappointed me.A.what;whatB.that;thatC.what;thatD.that;what57.It was in the lab ___ was taken charge of by Professor Harris ___ they did the experiment.A.which; thatB.that; whatC.whom; thatD.which; where58.Many people now make a rule to buy cards for their friends before Christmas.A.themselvesB.itC.thatD.this59.Someone is at the door, who is ?A.thisB.thatC.itD.he60.—It is raining cats and dogs.— .A.So it isB.So is itC.Neither it isD.Neither is it二.分析it成分，辨清相似句型。