It-的用法总结讲课稿
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it用法总结高三总复习 ppt课件
(7) If it were not for… / If it hadn’t been for… 若不是因为……
• If it were not for their help, we couldn’t have got over the difficulties. 要不是他们帮助，这 些困难我们不克服不了的。
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三、it用作形式主语
1. 基本用法
• 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，通常把真正的主语放在 句末，而在句首使用形式主语it。如：
• It’s very important to remember this. 记住这
一点很重要。
• It’s hard work climbing mountains. 爬山是费劲
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it用法总结高三总复习 ppt课件
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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
soon resign. 据传闻，国防部长不久就要辞职。 【说明】能用于此结构的动词不多，常见的有 have,
take, put, like 等。
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it用法总结高三总复习 ppt课件
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• (2) 动词 + it + when (if)-从句。如：
• I dislike it when you whistle. 我不爱听你吹口哨
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it用法总结高三总复习 ppt课件
• If it were not for their help, we couldn’t have got over the difficulties. 要不是他们帮助，这 些困难我们不克服不了的。
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三、it用作形式主语
1. 基本用法
• 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，通常把真正的主语放在 句末，而在句首使用形式主语it。如：
• It’s very important to remember this. 记住这
一点很重要。
• It’s hard work climbing mountains. 爬山是费劲
2021/3/26
it用法总结高三总复习 ppt课件
1
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
soon resign. 据传闻，国防部长不久就要辞职。 【说明】能用于此结构的动词不多，常见的有 have,
take, put, like 等。
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it用法总结高三总复习 ppt课件
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• (2) 动词 + it + when (if)-从句。如：
• I dislike it when you whistle. 我不爱听你吹口哨
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it用法总结高三总复习 ppt课件
It用法说课稿
It用法说课稿一、教学内容分析(一)、知识背景It是高中英语重要的语法之一，它分散于各个语法之中，如名词性语从句，状语从句，强调句等。
它既是重点也是难点，是高考复习中较常接触的，在各个题目中无所不在，因此需要作专题复习，归纳，讲解，辨析。
（二）、教学重点难点1. 语言知识重点与难点（1）it引导的强调句型（2）it作形式主语（3）it作形式宾语（4）it特殊句式2. 综合知识重点与难点（1）it引导强调句与其他从句的区别（2）It is kind ( of sb. ) to do sth. 与t is necessary ( for sb. ) to do sth.（3）It is .... since ...与It be ... before ...二、教学目标（一）.知识技能1. 复习、掌握it的各种用法2. 归纳并掌握相类似的句法辨析。
2. 提高学生语法分析以及综合运用能力。
（二）过程与方法习题引导，自主归纳，近似对比，拓展演化（三）情感态度“办法总比困难多”，遇到难题、复杂情况要积极想办法。
（四）学习策略1. 认知策略：能总结it的规律，并加以应用；2. 调控策略：利用游戏，鼓励学生主动积极思考，寓教于乐三、说学法1. 小组合作学习。
2. 大组PK竞争学习。
3. 在说练中体会it用法。
四、说教学步骤1.导课（1）习题导入：展示一个高考使用it用法的题目，引导学生形成一种认识， it用法不容小视。
（2）拓展回顾，框架定位：拓展复习范围，回顾句法结构体系，给it一个宏观的定位。
使用顺口溜，使记忆变得容易。
2.基础知识回顾（1）练习引导（2）归纳总结①It用法要牢记，性别不明和baby,天时距事这那它，形主形宾和固搭。
②61236指主句中常用的动词：think,believe,make,find,consider,feel；1指的是形式宾语it；2指的是宾补的两种形式：形容词或名词；3指的是真正宾语的三种形式：不定式短语，动名词短语或that引导的宾语从句。
it-的用法PPT优秀课件
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使用规则 It 代替this 或that，是人称 代词
➢Is this your car? No, It isn’t. ➢What’s that? --- It’s a video.
➢What’s this in English? It is a camera. Whose computer is that? It is mine.
很可能他不会通过考试。 __It__is_v_e_r_y_l_ik__el_y_t_h_a_t_he won’t pass the exam.
看起来好像天要下雨。 It seems that _it__is__g_o_i_n_g__to__r_a_i_n..
恰巧那天我不在那里。 It_h__a_p_p__e_n_e_d__t_h_a_t_I__w_a__sn__’t__th__e_r_e_t_h_a__t_d_a_y____.
距离、环境等，是非人称代词
指天气 ➢It was raining this morning.
指气候 ➢It’s (It is) cold in this room.
指时间 指距离
➢A: What time is it? B: It’s six thirty.
➢How far is it from here to the hospital?
speaking.
代替动名词短语
➢It is certain that prices will go up.
代替主语从句 6
用it代替不定式作形式主语常用于下列结构中：
It is our duty to do sth. 做某事是我们的职责 It is convenient for sb. to do sth. 对某人来说做某事方便 It is good , wise, bright, kind, nice of sb. to do sth. It is important, possible, necessary, strange for sb. to do sth.
It的用法小结 课件
It is three dollars.
指天气
指时间
指日期
指距离
指价值
指温度
It was nearly midnight when she came back.
It is some 3000 kilometers from Beijing to Guangzhou.
Today it is 30 degrees centigrade.
其他用法
1.It is time ( about time 、high time ) that从句(虚拟语气动词用did/had done/should do)
①It is time that children went to bed. ②It is time you bought a new car. ③It is (high ) time you made up your mind.
作形式宾语
该句型中的it 作形式宾语，该结构中常用的动词有：think, believe, make ,find, consider, feel如 ①We think it our duty to clean our classroom every day. ②He felt it important learning English well. They found it difficult that they would finish their work in two days. ④The Internet makes it easier for companies to keep in touch with customers.
You are kind to say so.
不定式的逻辑主语是由for引起，主 句中的形容词通常是表示重要性， 紧迫性，频繁程度，难易，安全等 情况的中性形容词。 常见的形容词有： important ， necessary ， natural easy ，safe ，common ，normal ， hard ， difficult ， dangerous ， unusual ， rare ， impossible ，
“It”作形式主语和形式宾语的用法详解讲课稿
新希望英语语法精讲------“It”作形式主语和形式宾语“It”作形式主语和形式宾语的用法详解It作形式主语和形式宾语用法，是英语学习的主要语法项目之一。
无论是单项选择，还是完行填空，it 用法始终是反复考查的重、热点之一。
现将it在特殊句型中作形式主语和形式宾语用法，进行如下归纳分析，以供学习参考。
一、It 用作形式主语当不定式（短语）、动名词（短语）或从句在某个句子中作主语时，为保持句子结构前后平衡，避免头重脚轻，因此常用it作形式主语置于句首，而将真正的主语放在句尾。
此时it只起先行引导作用，本身无词义。
e.g. It is wrong to tell a lie. (说谎是错误的。
) 〔It为to tell a lie的形式主语〕It is no use arguing about it. (争吵是没用的。
) 〔It为arguing about it的形式主语〕It is uncertain who will come. (谁要来还不确定。
) 〔It为who will come的形式主语〕It 作形式主语的常见句型：①It + be + 形容词+ to do sth. / doing / that ….e.g. It is very important to learn a foreign language. (学一门外语非常重要。
)It is useless crying over the spilt milk. (覆水难收。
)It was really surprising that she married a man like that.(她嫁给那样的男士真让人惊讶。
)②It + be +名词词组+ doing / that ….e.g. It is no good telling lies. (撒谎没好处。
)It is a pity that you didn’t go to see the film yesterday. (你昨天没看成那部电影真遗憾。
归纳it的用法PPT课件
法 • 注： it作形式宾语时，宾语之后一定要 有宾语补足语。否则，就不能用it了。 因为宾语已经在句末。
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III. 用在强调句型中的it (1)
It
• 强调句子的主语, 宾语, 表语或状语时，常用：
• “It is/was + 被强调的部分 + that连剩余部 分”. 这种句型不能强调谓语动词。如果强调 的部分是人，可用who/whom代替that。
= It is the place that I was born in.
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It
III. 用在强调句型中的it (4)
• 注6：在特殊疑问句中，只能强调特殊
疑问词。其结构为：“疑问词+强调句型 的 的一般疑问句？”
用• 即：“wh- + is/was it that连剩余部分？”
（3、4）
3) 在表达感情时可用 she, her, he, him代
替 it, its. 指国家、船只、飞机、火车、汽
的
车和城镇等无生命的东西。
用
e.g. We love our motherland. We are proud
of her.
法
4) 在回答 “what’s this/that?” 的答语中,
用it 代替 this/that。
e.g. What’s this/that? It’s a computer.
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It
I、 用作人称代词的it （5）
5) 指时间天气日期温度和距离。常不 的 翻译出来。
e.g. “What time is it?” “It’s 9 o’clock.” 用 It’s five years since he left.
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III. 用在强调句型中的it (1)
It
• 强调句子的主语, 宾语, 表语或状语时，常用：
• “It is/was + 被强调的部分 + that连剩余部 分”. 这种句型不能强调谓语动词。如果强调 的部分是人，可用who/whom代替that。
= It is the place that I was born in.
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It
III. 用在强调句型中的it (4)
• 注6：在特殊疑问句中，只能强调特殊
疑问词。其结构为：“疑问词+强调句型 的 的一般疑问句？”
用• 即：“wh- + is/was it that连剩余部分？”
（3、4）
3) 在表达感情时可用 she, her, he, him代
替 it, its. 指国家、船只、飞机、火车、汽
的
车和城镇等无生命的东西。
用
e.g. We love our motherland. We are proud
of her.
法
4) 在回答 “what’s this/that?” 的答语中,
用it 代替 this/that。
e.g. What’s this/that? It’s a computer.
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It
I、 用作人称代词的it （5）
5) 指时间天气日期温度和距离。常不 的 翻译出来。
e.g. “What time is it?” “It’s 9 o’clock.” 用 It’s five years since he left.
it的用法归纳总结
it的用法归纳总结IT的用法归纳总结IT，即信息技术，是指利用计算机、通信设备等现代化技术手段来处理、存储、传输和利用信息的一种技术。
随着信息技术的不断发展，IT的用法也越来越广泛，下面就来归纳总结一下IT的用法。
一、IT在商业领域的应用1. 电子商务电子商务是指利用互联网等信息技术手段进行商业活动的一种方式。
通过电子商务，企业可以实现在线销售、在线支付、在线客服等功能，大大提高了企业的效率和竞争力。
2. 企业信息化企业信息化是指利用信息技术手段对企业进行管理和运营的一种方式。
通过企业信息化，企业可以实现信息共享、流程优化、效率提升等目标，从而提高企业的竞争力和盈利能力。
3. 大数据分析大数据分析是指利用信息技术手段对大量数据进行分析和挖掘的一种方式。
通过大数据分析，企业可以了解市场趋势、客户需求、产品优化等信息，从而更好地制定营销策略和经营决策。
二、IT在教育领域的应用1. 在线教育在线教育是指利用互联网等信息技术手段进行教育活动的一种方式。
通过在线教育，学生可以随时随地进行学习，教师可以更好地进行教学和管理，从而提高教育的效率和质量。
2. 教育信息化教育信息化是指利用信息技术手段对教育进行管理和运营的一种方式。
通过教育信息化，学校可以实现信息共享、流程优化、效率提升等目标，从而提高教育的质量和效率。
3. 智慧教育智慧教育是指利用信息技术手段对教育进行智能化和个性化的一种方式。
通过智慧教育，学生可以根据自己的兴趣和能力进行学习，教师可以更好地进行教学和管理，从而提高教育的效果和质量。
三、IT在医疗领域的应用1. 电子病历电子病历是指利用信息技术手段对病历进行电子化管理的一种方式。
通过电子病历，医生可以更好地了解患者的病情和治疗情况，从而提高医疗的效率和质量。
2. 远程医疗远程医疗是指利用信息技术手段进行医疗活动的一种方式。
通过远程医疗，医生可以远程诊断和治疗患者，患者可以在家中进行医疗咨询和治疗，从而提高医疗的便捷性和效率。
It 用法归纳学案讲课稿
Unit One: It 用法归纳学案一、指代1.用来指代上文提到的事物。
1）----Pass me your nose. ----- Here it is .2）Whatever you do and say, ask yourself whether it is welcomed by others.2. 表示时间，天气，距离，温度等。
1）It was cold yesterday.2）It may be 25 kms from here to the town.3）It was very quiet in the café.3. 作为人称代词，it可以用来指东西、动物、婴儿和未确定身份的人。
1）Where's my left eye? Have you seen it?2）The cat is in the garden, isn't it?3）The baby cried because it is hungry.4）(有人在敲门）Who is it?4.表示谁在做某事的句子：1）--- Who is it? ---It’s me.2）Her face lighted when she saw who it was.5.用来泛泛的指某件事：1）It doesn’t matter.2）It is a shame, isn’t it?3）So you are going to be married this time？When is it？★注意：it, one及that 作代词的用法区别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。
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。
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,要有后置定语,但不可以有前置修饰语。
it用法总结ppt课件
3). It be ... before ... 该句型主句中的 it 指时间， 主句中的时态常是一般将来时或过去 时两种时态．主句中的表语多是long， not long ， 3 days ， 2 weeks 等表示时间段的词或短语，常译为“．．．之后．．．”。
It was 3 days before he went to Beijing. It will be not long before he finishes his job.
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2）.It is +v-ed +that 从句 ① It is said (reported， learned....) that ...
据说（据报道，据悉．．．）“。 It is said that he has come to Beijing.
②. It is suggested ( ordered /demanded/insisted/commanded... ) that ...
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 is time that children went to bed.
② It is the first ( second ... ) time that ... “是第一（二）．．．次．．．”。
It is the first time I have been here. = This is the first time I have been here.
It was 3 days before he went to Beijing. It will be not long before he finishes his job.
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2）.It is +v-ed +that 从句 ① It is said (reported， learned....) that ...
据说（据报道，据悉．．．）“。 It is said that he has come to Beijing.
②. It is suggested ( ordered /demanded/insisted/commanded... ) that ...
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 is time that children went to bed.
② It is the first ( second ... ) time that ... “是第一（二）．．．次．．．”。
It is the first time I have been here. = This is the first time I have been here.
(新整理完整版)it的用法公开课(精编课件)
goat decided to go for a walk to the park
though it was two miles away.
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excellent
it作代词
Unluckily he found he got lost and walked into a
strange house. There was a baby in the house. It was
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excellent
It is+ __n_o__u_se_\_n_o_g_o_o_d__ + doing sth.
Oh! My milk is spilt(溢出).
It is no good\no use _cr_y_i_n_g__o_v_er__s_p_il_t_m__ilk
(cry over spilt milk).
• It will be 3 months before they complete the bridge. 【句式3】 It will be +段时间 + before --要过多久----才--
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excellent
要点2： it指时间的几个重要句式
• It was 10 o’clock when the big fire broke out . 【句式4】 it was + 点时间 + when ---某事发生于---某一时刻--
•It was Sunday.
指时间
•It was a sunny day.
指天气
•It was two miles away. •It was crying. •It was big big wolf’s house.
it用法总结课件
2.2.指时间: It was nearly midnight when she came back.
2.3.指环境: It was very quiet in the café.
2.4.指距离：
It is half an hour’s walk to the city ceint用t法r总e结.
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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用法总结73. it 用作形式主语
3.1 代替主语从句
1）It is + adj. +that从句
① It is clear ( obvious， true， possible certain....) that ..... “清楚（显然，真的，肯定．．．）”
It is very clear that he’s round and tall like a tree.
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。
it用法总结
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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 glasses that 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 star until she took off her dark glasses.
高考英语it-的基本用法(中学课件201909)
㈠ 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ቤተ መጻሕፍቲ ባይዱ的事物， 以避免重复:
Ningbo is a beautiful city, isn’t it? 1.2.也可以指动物或婴儿(未知性别的婴儿或孩子): Is this your dog？No, it isn’t. 1.3.也可指抽象事物:
㈡.it的重要句型 1. It is + 被强调部分 + that ...
该句型是强调句型。将被强调的部分放在前面， 其它部分置于that之后，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。
It was about 600 years ago that the first clock with a face and an hour hand was made. It was they that (who ) cleaned the classroom yesterday.
It was in the street that I met her father.
Her face lighted when she saw who it was. 3.2.用来泛泛的指某件事： So you are going to be married this time？When is it？ It doesn’t matter.
It is a shame, isn’t it?
2.2.指时间:
It was nearly midnight when she came back. 2.3.指环境:
It was very quiet in the café. 2.4.指距离： It is half an hour’s walk to the city centre. 3.it的其他用法 3.1.表示谁在做某事的句子： Who is it? ---It’s me.
1.1.it的最基本用法是作人称代词，主要指刚提ቤተ መጻሕፍቲ ባይዱ的事物， 以避免重复:
Ningbo is a beautiful city, isn’t it? 1.2.也可以指动物或婴儿(未知性别的婴儿或孩子): Is this your dog？No, it isn’t. 1.3.也可指抽象事物:
㈡.it的重要句型 1. It is + 被强调部分 + that ...
该句型是强调句型。将被强调的部分放在前面， 其它部分置于that之后，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。
It was about 600 years ago that the first clock with a face and an hour hand was made. It was they that (who ) cleaned the classroom yesterday.
It was in the street that I met her father.
Her face lighted when she saw who it was. 3.2.用来泛泛的指某件事： So you are going to be married this time？When is it？ It doesn’t matter.
It is a shame, isn’t it?
2.2.指时间:
It was nearly midnight when she came back. 2.3.指环境:
It was very quiet in the café. 2.4.指距离： It is half an hour’s walk to the city centre. 3.it的其他用法 3.1.表示谁在做某事的句子： Who is it? ---It’s me.
it的用法精讲ppt课件
另外，用于该句型的动词还有order, command, suggest, propose, advise, demand, require. request等表示“请 求，建议，命令”等词。此时that 后的从句要用虚拟语气 （should + 动词原形），should 可以省。如： It is suggested that the meeting (should) be put off. It was ordered that the project be completed by the end of this year.
判定强调句型的方法： 将itis/was和that去掉后，剩余
的部分仍然是一个完整的有意义 的句子。
【典型例题】
1. It’s not doing the things we like, but
liking the things we have to do
____makes life happy.
(1)强调句的肯定句式： It is/was＋被强调部分＋that/who＋句子其 余部分。
It was Jane who paid for the meal yesterday. (强调主语)
It is in the hall that they have had a meeting. (强调地点状语)
(4)若强调“not ... until”结构中由until 所引导的时间状语时，用固定的强调句型： It is/was＋not until ...＋that ... It was not until he took off his dark glasses that I realized he was a famous film star. 直到他摘下墨镜我才认出他是著名的影星。
归纳it的用法PPT课件
2020年10月2日
6
It
II. 用作先行词的it （2）
• e.g. I found it important to study English.
的 • I feel it no use crying.
用 • I think it strange that no one would take the money.
（3、4）
3) 在表达感情时可用 she, her, he, him代
替 it, its. 指国家、船只、飞机、火车、汽
的
车和城镇等无生命的东西。
用
e.g. We love our motherland. We are proud
of her.
法
4) 在回答 “what’s this/that?” 的答语中,
Байду номын сангаас
It
(2)
• 注1：②-⑥句中的that不能用where/when代替。
• 注2：强调句型中的谓语只能有两种：was/is. 的• 注3：强调主语时，谓语应与主语的人称和数保
持一致。 用• e.g. It is I that am a student.
法• (不能用is/was/are/were) • It was Tom and his sister that were praised.
法 It’s getting colder and colder.
It is only three hours’ walk from my home to the airport..
2020年10月2日
5
It
II. 用作先行词的 it
(1)
• 当主语或宾语是动词不定式、动名词或
it用法详解ppt课件
Sentence patterns:
1.I like (enjoy, hate…) it when…. 2.I would appreciate it if… 3.…see to (depend on…) it that…
形式宾语
13
She took __C__ for granted that he was liked by all
Translation:我们认为你什么时候出发并不重要。
We consider it unimportant when you set out.
形式宾语
11
I think it his duty to clean the blackboard.
Sentence patterns:
2. S+ V + it + one’s duty + ( for sb. ) to do sth. +连词+ clause
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…
Sentence patterns You can leave the chores to me if you are busy. Please keep it in mind that you are a chinese man. She owed it to me that she is getting better and better.
worked last year?
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It 的用法总结
一. 代词: 1)指代上文
2)指代this/that
3)指代未知性别的婴儿或孩子或身份不明的人
4）指代时间/地点/天气/温度/距离/环境
1.It gets dark very early in the winter.
2.What will you call it if it’s a boy?
3.I love spring---It’s a wonderful time of the year.
4.It’s less than 100 kilometres from here to Jinan.
5.When the factory closes, it will mean 500 people losing their jobs.
6.What’s this? It’s a cat.
7.It has snowed much this year.
(1)The book in your bag is very interesting. Can I borrow ?
(2) The book in your bag is more interesting than ______ on the desk.
(3) The weather here is much colder than____ in Nanjing.
(4) The books are free. You can take____ free of charge.
(5) The books in the bag are better than _____ on the desk.
【句式1】it is /has been + 段时间+ since ----自从----多久了•It is / has been 3 years since I visited your company.
【句式2】It was + 段时间+ before ---过了多久-----才--- •It was 3 hours before he realized the truth.
【句式3】It will be +段时间+ before --要过多久----才-- •It will be 3 months before they complete the bridge.
【句式4】it was + 点时间+ when ---某事发生于---某一时刻—It was 10 o’clock when the big fire broke out .
【句式5】It /this is/was the +序数词+ time + 现在完成时态/过去完成时- （表示某人第几次做某事）
•It is the second time I have heard of this .
【句式6】It is time (about time /high time ) that sb. did /should do （该是干……的时候了）
It is time that we went to school.
1. It will be years ____ we meet again.
2. It is ten years ____ I came to this town.
3. It is ten years ago ____ I came to this town.
4. It is the third time ___ I _________ (visit) to this town.
5. It was 2 am. ___Tangshan earthquake took place.
A. when
B. that
C. before
D. since
二. 引导词: 1)形式主语2)形式宾语3)强调句
基本结构：It + be/v. +……+
(for sb/ of sb.) to do sth (动词不定式) doing sth.（动名词短语）
that/ whether …（从句）
注意1：: For or Of ?
1. It is important ____ us to learn English well.
2. It is very kind ____ you to help me learn English.
3. It is foolish ____ you to believe him.
4. It is necessary ____ you to go over this lesson.
注意2;It 何时代替doing?
It +be + no use
no good + doing sth
a waste of time
……
翻译：
1.和他争论没有用。
_______________________________
2.打电脑游戏是浪费时间。
_____________________________________________
注意3：that后的从句要用虚拟语气（should + 动词原形），should 可以省
(1). It is a pity (a shame /an honor /a good thing/a fact /a surprise/... ) that ...
(2). It is important ( necessary，strange，natural...) that ...
(3).It is insisted(ordered/commanded,suggested/advised/proposed,demanded/requested/required... ) that ...
注意4：He is said/ reported to have gone abroad.
=It is said/reported that he has gone abroad.
All the students are believed to have done their best.
=It is believed that all the students have done their best.
注意5：It + vi.(不及物动词) + that
It happens that he was out. 碰巧…
It seems that he doesn’t know the secret.好像…
It appears that he is honest. 好像…
It occurred to me that I lost my purse on the bus. 我突然想到…
It doesn’t matter whether he will come or not. …没有关系
基本结构：
动词+ it + 形容词/名词+（for/of sb +）to do(动词不定式) think doing sth（动名词短语）believe that 从句（从句）
find necessary
feel possible
consider natural,
suppose no use/no good/
make a waste of time
keep………
it作形式宾语的特殊句型：V.+ it + if/that/when
动词有喜欢类：enjoy, like, appreciate, prefer
讨厌类：hate, dislike
1.基本结构：It is/was + 被强调部分+ that /who(人) ...例如：他是因为病了才没能帮我
It was because he was ill that he couldn’t help me.
Was it because he was ill that he couldn’t help me?
Why was it that he couldn’t help me?
2.not…until句式的强调句型：
It is/was not until …+ that ... “直到…才…”
例如：He didn’t get home until it was dark.
，
三．用在固定结构中的it
take it easy. 别紧张
take it for granted 认为···理所应当believe it or not 信不信由你
make it 成功；完成某事
forget it 忘了吧；没关系
worth it 有好处，值得做
It/That all depends. 要看实际情况而定when it comes to····当谈到…，但提到…got it =understand 理解，明白。