it的基本用法学案
it的基本用法一、it用作代词1.用作人称代词，代表前面提到的人（指代性别不详的婴幼儿或指代说话者心目中不太清楚的那个人）或事物。
2.(在回答含有指示代词this\that的问句时)常用it指代指示代词this 和that。
3.it 可以用作非人称代词，表示_____,_____,______,______,______,_____等。
注1: it, one, that 区别it 指代上文提到的表特指的单数可数名词或不可数名词，即“同类又同物”;one表示“同类不同物”, 只能代替可数名词单数，相当于a/an+可数名词单数；还可以指众多中的一个（注意它在定语从句中的指代）(复数n用ones指代) that 表示“同类不同物”，（只在平级结构或比较级结构或表对比结构中指代前文出现的表特指的可数名词单数或不可数名词。
（复数名词用those指代)二、It 作为形式主语当不定式、、从句等用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it.eg:1.It is illegal（for a teenager）to drive a car without a license.2.It is necessary for you to give him a letter.Conclusion：在句1和句2中it 的作用是___________ ,真正主语是________。
（1）构成如下结构：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，impossible，likely，right，wrong，important，obvious，useful，useless，dangerous…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，careless，foolish，stupid，wise，crazy.eg:1. It‘s kind of you to help me with the problem.某人做某事某人是…….2 It’s foolish of you to quit your job now.eg:1.It is no good crying over spilt milk.2.It is no use casting pearls before swine .Conclusion：（2）在句1与句2中，it的作用是_________, 真正主语是____________.构成如下结构：It is +no use/no good/not any good/not any use+ doing sth.eg:Read and analyze the following sentences.1.It is obvious that the water was to blame.2. Is it possible that he will become the chairman of our country?3. It is amazing that at my age I still look like a student!Conclusion：在句1句2句3中，it的作用是______ ,句子真正的主语是____________（3）构成如下结构：It is+ ____+ that从句注意：It is important ( necessary,strange,natural...) that ...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.It is important that we (should) learn English well.It is necessary that he (should) remember these words.（4）It is said (reported....) that...该句型中的it 仍是形式主语，真正主语是that引导的主语从句。
It is said that… 据说……It is reported that…It is supposed that…It is hoped that…It is well known that…注意：It is suggested (ordered/demanded/insisted/commanded... ) that ...该句型和上一个同属一个句型，主句中的过去分词是表示请求，建议，命令，推荐等词时，that后的从句要用虚拟语气（should + 动词原形），should 可以省；常译为“据建议；有命令．．．）It is suggested that the meeting ( should ) be put off.It was ordered that we (should) arrive there in two hours.（5）It is a pity ( a shame ... ) that ...该句型中，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。
It is a pity that such a thing (should) happen in your class. （虚拟语气）It is a pity that he is ill. 他生病了，真遗憾！（非虚拟语气）（6）It is time ( about time ，high time ) that ...该句型中that 后的从句应该用虚拟语气，值得注意的是①常用过去时态表示虚拟．②有时也用should + 动词原形，should 不能省，常译为＂是（正是）．．．的时侯．．．＂It is time that children should go to bed. = It is time that children went to bed.（7）It happens (seems，appears) that...该句型中it是形式主语，that 引导的是主语从句，主句中的happen，seem等词是不及物动词。
It happened (sohappened) that he met his teacher in the street. 碰巧…It seems that he will be back in a few days. 看来…（8）It looks ( seems ) as if ...该句型中it无意义，as if 引导一个状语从句。
常译为，＂看起来好象．．．＂如果与事实不相符合，则用虚拟语气。
It looks as if he is ill.（真的病了）It looks as if he were ill. （没有生病）It seemed as if he were dying.Summary: It 作为形式主语…possibleIt is / was + adj. necessary + ( for sb. ) to do sth. / Clauseimportant……one’s dutyIt +is /was + n. one’s hope + that / (for sb.) to do sth.anhonor……saidIt is / was p.p. known + that-clausebelieved…三、it作形式宾语1. I found it very interesting to study English.我发现学英语非常有趣。
2. I think it no use arguing with him.我认为和他争吵没有用。
3. He made it clear that he was not interested in this subject.他非常清楚地表示他对那门学科不感兴趣。
小结：it在句中充当_________，真正宾语可以由______ 以及_________短语充当。
还可以由______引导的宾语从句充当。
总结：当复合宾语中的宾语是不定式、动名词宾语从句时, 往往把真正的宾语放在它的补足语后面，而用it 作形式宾语, 放在宾语补足语之前。
该句型中的it 作形式宾语, 常用的动词有think, believe, make, find, consider, feel等。
Summary: it作形式宾语……findpossible1. S+ think +it +necessary + (for sb.) to do sth. /thatfeelimportant………a rule2. S+ V + it + one’s duty + ( for sb. ) to do sth. /thatanhonor…3. S + V + it + no good + doing sth.no use特殊句式结构：1. I like ___ in the autumn when the weather is clear and bright.(04全国)A. thisB. thatC. itD. one点拨:这是it作形式宾语的一种特殊用法.少数动词(如like, love, enjoy, dislike, hate, appreciate 等)或包含介词的动词短语(如see to, depend on等)后接宾语从句,必须先由it担任形式宾语,再接从句.1.I like (enjoy, hate…) it when2.I would appreciate it if…3.…see to (depend on…) it that4.Please see to it that the door is locked.5.See to it that you are here on time tomorrow morning.6.You may depend on it that it is true.7.You may depend on it that we support you8.You may depend on it that he will turn up in time.2. She took ____ for granted that he was liked by all the people.A. thisB. thatC. itD. one点拨:这也是it作形式宾语的一种特殊用法.少数动词短语中包含it作形式宾语,其结构为：sbowe it to sb+ 连词+ clause 把…归功于…bring it to sb+ 连词+ clause 把…带给某人leave it to sb to do\+ 连词+ clause 把…留给某人去做take it for granted + 连词+ clause 某人想当然…keep it in mind + 连词+ clause 牢记…四、it用在强调句型中即It is/was+被强调成分+that/who/whom+句子其他成分，该句型是强调句型。
it的用法导学案
---------------------------------------------------------------最新资料推荐------------------------------------------------------it的用法导学案It 的用法讲课人：段小萍握知识教学目标：掌握 it 的用法教学模式：呈现观察归纳讨论展示总结巩固教学步骤：Step 1: 呈现观察归纳教师给出六组句子，要求学生大声朗读这些句子，找出每组句子的共同特征。
1. It is a beautiful day here and Im sitting under the big tree at the end of the garden. It is my birthday in two weeks time and Ill be 82 years old! It rains cats and dogs and we cant go outside. 归纳：2．－Who is the baby? －Its my teachers son．－Who is that gentleman? －Its my friend, Tom．He (不可用 It) wants to see you．归纳：3．Im sending you some advice I found on the internet. It might help you. If you do the same thing over and over again, you begin to do it automatically. You cant eat the cake; its mine. You have saved my life；I shall never forget it．归纳：4. It seems amazing that at my age Im still fit enough to cycle 20 kilometers in an afternoon. Its reported that many1 / 7people were killed in the We chuan earthquake. It was more difficult for smoking couples to become pregnant. It’s verykind of you to have listened to me． Its up to you to decide whether well visit the Great Wall or not. Its no use crying overspilt milk. 归纳：5. Your mother tells me that you started smoking some timeago and now you are finding it difficult to give it up. I thinkit best that you should do more exercise. The two countriesthink it necessary to strengthen their friendship. I hate itwhen people speak with their mouth full. 归纳：6. It is human activity that has caused this global warming. It was Jim Brown who/that you should ask. It is only when the disease has progressed to AIDS that a person begins to look sick. Was it on August 8 that the 29 th Olympics took place? Whenwas it that you called me yesterday? 归纳：Step 2: 即学即练 1. It was at the gate _____ he told methe news. A that B what C which D when 2. Is ____ necessary to tell his father everything? A it B that C what D he 3. Was it in this palace _____ the last emperor died? A that B in which C in where D which 4. Is____ possible to fly to the moon in a spaceship? A now Bman C that D it 5. Was it during the Second World---------------------------------------------------------------最新资料推荐------------------------------------------------------War ____ he died? A that B while C in which Dthen 6. Is ____ necessary to complete the design before National Day? A this B that C it D he 7. I dont think ____ possible to master a foreign language without much memory work.A thisB thatC itsD it 8. Does ____ matterif he cant finish the job on time? A this B that C he Dit 9. It was not ___ she took off her dark glasses ____ I realizedshe was a famous film star. A when, that B until, that C until, when D when, then 10. Toms mother kept tellinghim that he should work harder, but ___ didnt help. A he B which C she D it 11. ____ is a fact that English is being accepted as an international language. A There BThis C That D It Step 3: 跟踪练习必做题：1.It was at the gate ____ he told me the news. A. thatB. whatC. whichD. when 2.Is ____necessary totell his father everything A. it B. that C.what D. he 3.Was it in this palace ____ the last emperor died? A. that B. in which C. in where D. which 4.Is____ possible to fly to the moon in a spaceship? A. now B.man C. that D. it 5.Was it during the Second World War ____he died? A. that B. while C. in which3 / 7D. then 6.Is ____necessary to complete the design beforeNational Day? A. this B. that C. it D.he 7.I don’t think ____possible to master a foreign languagewithout much memory work. A. this B. that C. its D.it 8.Does ____matter if he can’t finish the job on time? A.this B. that C. he D. it 9.It was not ____shetook off her dark glasses ____ ,I realized she was a famous filmstar. A. when; that B. until; that C.until; when D. when; then 10.Toms mother kept telling himthat he should work harder, but ____didnt help. A. he B.which C. she D. it 11.____is a fact that Englishis being accepted as an international language. A. ThereB. ThisC. ThatD. It 12. Is ________ possible to fly tothe moon in a spaceship? A．now B．man C．that D．it 13．Our food and service are better than ________ usedto be. A．it B．we C．they D．them 14．________ appears to me ________ the report must betruth. A．That; it B．It; that C．It; it D．That; that15．He feels ________ duty to help others. A．that he B．thathis C．it he D．it his 16．Take ________ easy. Theroads are icy. A．it B．them C．us D．you 17．The TV sets made in China are much better than ________---------------------------------------------------------------最新资料推荐------------------------------------------------------in Japan. A．that B．those C．them D．It 18． Have you found the bike you lost yesterday? Yes,I’ve found ________ already. A．it B．that C．theone D．that one 19. I’m looking for a flat. Wouldyou like ____ with ____ garden? A．it; the B．it; a C．one; a D．one; the 20．________ was ________ who I metin the museum this morning. A．It; him B．It; he C．That;he D. That; him 21．It was in the rice fields ________ we hadour League meeting. A．where B．that C．in which D．onwhich 22．________ you come to the party solate? A．Why is it B．Why it is C．Why it is that D．Why is it that 23． Were all three people in the car injuredin the accident No, ___ only the two passengers ___ gothurt． A．they were; that B．there was; that C．itwas; who D．there are; who 24．I don’ t think ________ possible to master a foreignlanguage without much memory work . A．this B．that C．its D．it 25．It was not ________ she took off her glasses________ I realized she was a famous film star． A. when; thatB. until; thatC. until; whenD. when; then 26.It was notuntil 1920 ____ regular radio broadcasts began. A．while5 / 7B．which C．that D．since 27．________ is a fact thatEnglish is being accepted as an international language. A．There B．This C．That D．It 28．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．when 29．It wasonly when I reread his poems recently ____ I began to appreciatetheir beauty. A．until B．that C．then D．So 30．I hate ______ when people talk with their mouths full.A．it B．that C．these D．them 选做题：1．用先行词 it 改写下列句子：（1）Possibly the Joneses will come to the party as well.（2）Whether they will come or not doesnt matter very much. （3）He is quite likely to let you down. （4）You seem to have takena dislike to him. （5）I happen to have had some nasty experiencesin dealing with him. （6）Getting the car on the boat was rather complicated. （7）To be with you here this evening is a great pleasure. （8）You were so kind to invite us. 2．用强调句型改写下列句子。
初中it形式宾语教案
教案：初中英语语法——It用作形式宾语的用法一、教学目标1. 让学生掌握It用作形式宾语的基本结构：动词+it+宾语补足语+不定式（动名词或从句）。
2. 让学生学会在实际语境中运用It用作形式宾语的句子。
3. 提高学生对英语语法的理解和运用能力。
二、教学内容1. It用作形式宾语的基本用法。
2. 特殊形式的It用作形式宾语。
三、教学过程1. 导入：通过一个谜语引导学生思考It在句子中的作用。
2. 讲解：（1）介绍It用作形式宾语的基本结构：动词+it+宾语补足语+不定式（动名词或从句）。
举例：I find it difficult to do the job well.（我发现做好这件事不容易。
）（2）讲解特殊形式的It用作形式宾语：动词+it+that-从句和动词+it+when（if）-从句。
举例：I like it that you came.（你来了，我很高兴。
）3. 练习：让学生分组练习，运用It用作形式宾语的句子。
4. 拓展：引导学生运用It用作形式宾语的句子进行口语交流。
5. 总结：对本节课的内容进行总结，强调It用作形式宾语的用法。
四、课后作业1. 复习本节课所学内容，整理笔记。
2. 完成课后练习题，巩固所学知识。
3. 尝试运用It用作形式宾语的句子进行口语交流。
五、教学评价1. 课后收集学生的作业，检查掌握情况。
2. 在下一节课开始时，进行课堂测试，检验学生的学习效果。
3. 观察学生在课堂上的参与度和口语表达能力。
六、教学建议1. 在讲解过程中，尽量用简洁明了的语言，便于学生理解。
2. 举例时要贴近学生的生活，让学生能够更好地理解和运用。
3. 鼓励学生在课堂上积极发言，提高口语表达能力。
4. 课后及时批改作业，给予学生反馈，指导其纠正错误。
通过本节课的学习，使学生掌握It用作形式宾语的用法，提高他们在实际语境中运用英语语法的能力，为今后的学习打下坚实基础。
英语语法it 教案
英语语法it 教案教案标题：英语语法 - "It" 的用法教案目标：1. 学生能够理解和正确运用英语语法中 "it" 的不同用法；2. 学生能够在口语和书面表达中正确使用 "it"。
教案步骤：引入活动：1. 引导学生回顾 "it" 的基本用法，例如作为代词、占位符等；2. 提问学生关于 "it" 的常见用法，并引导他们思考其他可能的用法。
教学主体：步骤一：介绍 "it" 作为主语的用法1. 解释 "it" 作为主语时的常见情况，例如表示天气、时间、距离等；2. 提供示例句子，让学生理解 "it" 作为主语时的正确用法；3. 引导学生进行口语练习，使用 "it" 作为主语构建句子。
步骤二：介绍 "it" 作为宾语的用法1. 解释 "it" 作为宾语时的常见情况，例如表示时间、天气、感觉等；2. 提供示例句子，让学生理解 "it" 作为宾语时的正确用法；3. 引导学生进行口语练习，使用 "it" 作为宾语构建句子。
步骤三：介绍 "it" 作为形式主语或形式宾语的用法1. 解释 "it" 作为形式主语或形式宾语时的常见情况，例如表示真理、情感等；2. 提供示例句子，让学生理解 "it" 作为形式主语或形式宾语时的正确用法；3. 引导学生进行口语练习，使用 "it" 作为形式主语或形式宾语构建句子。
步骤四：综合练习1. 提供一些综合练习题，让学生运用所学的 "it" 的不同用法进行句子构建；2. 引导学生进行小组讨论，分享他们的答案，并给予相互反馈。
it用法教学设计
it用法教学设计《it 用法教学设计》一、教学目标1、让学生了解“it”在不同语境中的基本用法。
2、帮助学生掌握“it”作形式主语和形式宾语的结构及用法。
3、引导学生正确运用“it”进行句子的翻译和写作。
二、教学重难点1、重点（1）“it”作人称代词，指代事物、动物或不明身份的人。
（2）“it”表示时间、天气、距离等。
（3）“it”作形式主语，常见的句型结构如：It is ＋ adj ＋（for sb）to do sth（4）“it”作形式宾语，常见的句型结构如：find ／ think ／ make ＋it ＋ adj ＋ to do sth2、难点（1）学生对“it”作形式主语和形式宾语的理解和运用。
（2）如何让学生在实际语境中准确判断“it”的用法。
三、教学方法1、讲授法：讲解“it”的基本用法和重点句型结构。
2、练习法：通过练习题让学生巩固所学知识。
3、情境教学法：创设具体的语言情境，帮助学生理解和运用“it”。
四、教学过程1、导入（5 分钟）通过展示一些包含“it”的句子，如“It's a dog” “It's sunny today” “It's five kilometers from my home to school” 等，引导学生观察“it”在这些句子中的用法，从而引出本节课的主题——“it”的用法。
2、知识讲解（20 分钟）（1）“it”作人称代词展示例句：“Look at the cat It is cute” 解释“it”在这里指代前面提到的“the cat”。
再举例：“Who is knocking at the door? It's me” 说明“it”在不知对方身份时的使用。
（2）“it”表示时间、天气、距离等给出句子：“It's six o'clock now” “It's rainy” “It's about 200 meters from here to the supermarket” 分别讲解“it”在表示时间、天气、距离时的用法。
it用法讲义导学案
Unit3 “It 用法”导学案①It 表指代（人、事物、时间、日期、地点.天气.温度、距离、环境等。
）②It 作形式主语、形式宾语【学习步骤L -it 用作代词(1) Read and analyze the following sentences ・I cannot find my watch; I must have lost itThey got a baby and it was very lovelyHer mother kept telling her not to go out at night, but it didn't helpHe smokes in bed and I don't like it.——Who is it? ——It s me・-Listen. Someone is crying ・-Oh, it must be Mary 请指出在这些句子中it 的用法(2) .Read and analyze the following sentences ・1. 2. 3. 4. 5. 6. Question: What does “ it M in these sentences refer to?归纳总结：:it 可以用作非人称代词，表示 __________-it 用作引导词(-)It 用作 __________________ ・1・2.3.4.5.(2)代替不左式、动名词、作形式主i 乐把貞•正的主语放在句末。
it 用作形式主语的重要 句型有：学习者姓名: 学习者组别: 学习者编号:【学习目标】:熟悉课文中岀现的it 句型，能熟练运用该句型，并了解其他常见it 句型。
【学习重点】:it 做形式主语和形式宾语 【学习难点】： 运用it 句型【学习内容】: 呈现仿句归纳反馈It is Friday today.It was very cold last Monday.It is about & 30 now.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!It is obvious that the water was to blame.It is easy for you to listen to teacher attentively.It is no use arguing with him about it.It is amazing that at my age I still look like astudent! 分析：it 是 ，句子真正的主语是一1)It + be + adj + for (of) sb to do sth 某人做某事…1 )It is important for her to come to the party2)It is kind of you to say so比较这两个句子，区别是：______________________________________bad , brave , modest , silly , important, dangerous , normal , common , necessary.可用于句型(1)的形容词是_______________________________________可用于句型(2)的形容词是__________________________________________It is unfair ________________ to criticize me.(he)It is not common ______________________ t o receive letters(he)2)It is important (necessaiy, right, strange, natural...) that...that从句中常用虚拟语气：should+动词原形，should可以省去。
2022年中考英语语法专题之 It做形式主语学案(含练习及答案)
It 做形式主语的用法1.To learn the types of structures in this unit.2.To know how to use these structures.3.Attract students’ interest to English learning.it 代替动词不定式作主语 It 作形式主语it 代替动名词作形式主语it 代替从句作主语It 作形式宾语It 用于强调句It + be + 形容词 + for sb + to do sth It + be + 形容词 + of sb. + to do sth It + be +名词词组 + to do sthIt takes/took sb +some time/ money to do sthIt + be + 名词或形容词 + 动名词 It + be + 名词词组 + 主语从句 It + 不及物动词 + that(as if ) + 从句It + be + adj + that 从句It + be + -ed(过去分词)+ that 从句It is/was +被强调部分+that/ who +其他部分…1.当不定式（短语）、动名词（短语）或从句在复合宾语结构中作某些动词的宾语时。
2.某些表示“喜、怒、哀、乐”的动词。
3.that 引导的宾语从句不能直接作介词的宾语。
4由及物动词与介词组成的固定搭配中，宾语从句若作该动词的宾语时，须借用it 。
It 作形式主语一. 概念1. 定义与使用原因：动词不定式、动名词或主语从句作主语时，为避免头重脚轻，通常用it作形式主语，放到句首，把动词不定式、动名词或主语从句放在句末。
此时it只起先行引导作用，本身无词义。
2. it用作形式主语主要用于以下三种情况：(1)it代替动词不定式做主语(2)it代替动名词做形式主语(3)it代替从句做主语例如：It’s necessary for the young to master two foreign languages.It is no use arguing about the matter with him.It’s a pity that you fail the exam.It was noisy when I got into the room.二.it代替动词不定式做主语1. It + be + 形容词+ for sb. + to do sth.这类句型常用形容词(通常为描述事件的形容词)easy, difficult, hard, important, possible，wise, necessary, impossible, likely, obvious, useful, 等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，译为“对某人来说做某事怎么样”例如：It’s necessary for the young to master two foreign languages.掌握两门外语对年轻人来说是非常有必要的。
it 用法很实用的学案
It的用法一、it用作代词的用法1．it 用来指代时间、地点、距离、天气、气候、季节、温度、环境等或虚指的情境。
例如：It was nearly midnight when she came back.2．代替有生命但不能或不必分阴阳性的东西(包括婴儿)。
如：What a beautiful baby---- is it a boy?二、it可在句子中作主语或宾语，用来代替一个名词，一个短语，一个分句或一个句子，以避免它们在句子中的重复。
为了避免句中作真正主语的动词不定式短语、动名词短语和名词性从句(一般都比较长)置于句首时造成头重脚轻，习惯上用it作形式主语置于句首，指代后面的真正主语，使句子显得流畅,保持句子的平衡。
而且，作形式主语的代词只能用it ，不能用that，this等词.㈠it作形式主语的用法1.It + be＋形容词＋for sb./ sth.＋动词不定式用于此句型的形容词有：easy，hard，difficult，possible，important，impossible，necessary，good，bad，natural, safe, common, normal, dangerous, unusual, rare, pleasant 等。
2.It+ be＋形容词＋of sb．＋动词不定式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：kind, nice, wise, clever, brave, silly, foolish, stupid, polite, impolite, rude, friendly, careless, cruel, honest ,lazy, modest, naughty, selfish, wrong, right , 等。
3.It+ be ＋形容词/名词＋doing sth．此句型中的形容词和名词常见的有：no use, no good, useless等。
教学设计1：it的用法
The use of “it”TEACHING AIMS：1.Get the Ss to grasp the use of “it”.2.Help the students learn to use some sentence patterns.3.Improve the students’ ability of using language.TEACHING IMPORTANT & DIFFICULT POINTS:How to help the students grasp the grammar efficiently.TEACHING PROCEDURESStep I 预习检测(学生活动)Ask the students to read the sentences with “it” in them.Step II 导入新课，明确目标（教师活动）1. Ask the Ss to tell the function of “it”.2. Show learning aims.Step III 小组合作，互动探究（生生互动）一、作代词it的最基本用法是作代词，主要指刚提到的事物，以避免重复；也可代指时间、天气、日期、距离、季节、度量、价格未知性别的人等。
It rains heavily.It is 20 kilometers from Granddad's house to James’.It is November 11, 2005.It is 9 o’clock at night.It'll be lovely in the garden tonight．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。
it与that的区别：两词都可代替某一特定名词，但that指同一类，并非同一个。
e.g. ---- Do you still have the bicycle?---- No, I have sold _________---- Is this knife yours?---- No. It is Xiao Zhang’s. Mine is ____ _____ on the desk.e.g. The climate of South China is mild（温和的）; I like______very much.（_________指the climate of South China）The climate of South China is much better than______of Japan.（_____指the climate）二、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。
高中英语it的四大用法教案
I 用作代词的it用法例句代替前文提到过的东西或事情，用作人称代词。
This is a new dictionary. I bought it yesterday.Tom joined the army last month. Do you know about it?代替指示代词，起着this 或that的作用Is this your car? No, it isn’t. --What’s that?—It’s a video. --Whose room is this? --It is theirs.代替有生命但不能或不必分阴阳性的东西（包括婴儿）。
Who’s there? It’s me. (It’s John) Go and see who it is that rings. It’s Bill. The Greens have a new baby. It’s lovely.Yesterday we saw a big tree. It was fully twenty meters high.指时间，距离，自然现象（天气，气候，明暗）量度，价值等It is fine (rainy, windy, etc.).—How much is the coat? —It’s ninety dollars.It is noon. It is an hour’s walk to the factory.【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’s ten years since they got married．It’s about three years since I last played basketball．(3) It / This is the first / second…time that－从句(必须使用现在完成时) 这是某人第……次做某事。
初中it形式宾语教案
初中it形式宾语教案教学目标：1. 学生能够理解it形式宾语的概念及用法。
2. 学生能够在句子中正确运用it形式宾语。
3. 学生能够区分it形式宾语和真实宾语的区别。
教学内容：1. it形式宾语的概念及用法。
2. 常用动词与it形式宾语的搭配。
3. it形式宾语在特定结构中的应用。
教学步骤：Step 1：引入话题1. 引导学生回顾之前学过的宾语概念，让学生理解宾语在句子中的作用。
2. 提问：同学们，我们知道一个句子中可以有真实宾语和宾语补足语，那么有没有同学想过，有时候我们为什么会使用一个代词it作为宾语呢？Step 2：讲解it形式宾语的概念及用法1. 解释it形式宾语的概念：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。
2. 举例说明：- I find it difficult to do the job well.（不定式）- I think it best that you should stay here.（从句）- We think it no use complaining.（动名词）Step 3：常用动词与it形式宾语的搭配1. 列出常用动词与it形式宾语的搭配：consider, think, make, find, believe, count, declare, deem, fancy, feel, guess, imagine, judge, prove, see, show, suppose, understand, take等。
2. 让学生练习使用这些动词与it形式宾语的搭配，如：- I consider it my duty to help the poor.- She thinks it important to learn a second language.Step 4：it形式宾语在特定结构中的应用1. 讲解it形式宾语在特定结构中的应用，如：- 动词 it that-从句：I like it that you came.- 动词 it when (if)-从句：I dislike it when you whistle.- 动词 it for-从句：Many Chinese here find it necessary for them to have a better command of Chinese.2. 让学生练习使用这些结构，如：- I take it (that) he will come on time.- I’d prefer it if I didn’t have to do so much work.Step 5：巩固练习1. 让学生完成一些练习题，以巩固他们对it形式宾语的理解和运用。