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语法专项复习之It的基本用法及句型It的基本用法：1. 人称代词it，是第三人称单数中性，代表前文已提到过的一件事物。
如：That vase is valuable. It is 200 years old.2. 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。
如：It’s a lovely baby. Is it a boy or a girl?3. it可用来指代团体。
如：The committee has met and it has rejected the proposal.4. it用以代替指示代词this, that。
如：--- What’s this? --- It’s a pen.5. 作指示代词的it，常用以指人或物。
如：--- Who is making such a noise?--- It must be the children.6. it常作无具体意义的主语，表示天气、气候、温度、时间、地点、距离等意义。
如：It is half past three now.It was very cold; it snowed and grew dark.7. it也常用来表示一般的笼统的情况。
如：It’s awful—I’ve got so much work I don’t know where to start.Take it easy.8. it充当形式主语（主要见句型中）。
如：It is difficult to translate this article.It is no use going there so early.注意：在上述诸例中，后置的真正主语可以取代先行it的位置，而出现于句首。
To translate this article is difficult.Going there so early is no use.但：也并非所有it形式主语结构都可作上述转换。
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的用法总结和练习①It is never too old to learn. 活到老，学到老。
②It is easier said than done. 说起来容易做起来难。
③It is no use crying over spilt milk. 覆水难收。
④It never rains but it pours. 不鸣则已一鸣惊人。
一、it的常用固定词组二、it 做代词的用法1.Tom has failed in the exam. Have you heard about it?代替前文提到的东西或事情。
2.Tom bought a new house, but it needed lots of work before he moved in. 代替同名同物。
3.Whose room is this? It is theirs.代替指示代词this,that的作用。
4.Let’s go to see who it is. 指明某人某事的身份或不知男女用it。
5.It’s Sunday today.（date）It is very cold today. （weather）It is about 8:30 now. （time）It’s 5 yuan. （value）It lies in the south of Shaoguan city. （place）It is 5 kilometers from A to B. （distance）三、it做形式主语的用法1.It+ be+ adj+ of/for+ sb +to do sth（用of的形容词bad / brave / careless / clever / cruel / foolish / good（好心的）/ honest / horrible / kind / lazy / modest / naughty / nice（有教养的）/ polite / rude / silly / stupid / wise / wrong（错误的））2.It+ be+ adj +that/whether +从句（true /easy /hard /necessary /curious / obvious /likely /possible /probable /good /wonderful /natural /certain / natural / strange / normal / unusual/ impossible / pleasant / important）3.It+ be+ pp（said /reported /believed /supposed/ expected /proved / hoped / thought / known / decided / advised / ordered / demanded ）+that+ 从句4.it is/was a pity that …it is/was no wonder that …it is/was a shame that …it is/was no surprise that …it is/was an honor that …it is/was a good thing that …it is/was a fact that …5. It seems/seemed that/as if …It happens/happened that/as if …It appears/appeared that/as if …6.It hits/hit sb that …It strikes/ struck sb that …It occurs to sb that …It occurred to sb that …7.It is/was no use doing sth It is/was no good doing sthIt is/was useless doing sth四、it作形式宾语的用法1.Sb +动词+ it +if/ when 引导的宾语从句（like / dislike / hate / enjoy / love / appreciate）2. 6123结构think / make / find / consider / feel/ believe3.I take it that you will be leaving for Shanghai soon.认为The rumor has it that the mayor will resign to take the responsibility for the crisis. 据传You can count on it that he will arrive on time. 期待She will see to it that he goes ahead. 确保You can depend on it that the result will be announced.五、常用句式。
it的用法专项练习Ⅰ. 把下面句子译成英语，注意it的用法1. 过了很久他才回来。
________________________________________________________________________2. 我们两个月后才会再见面。
________________________________________________________________________3. 我离开这所学校已经20年了________________________________________________________________________4. 直到她摘下墨镜我才认出她是个著名影星。
________________________________________________________________________5. 是约600年前第一块带有表盘(face)和一个时针（hour hand）的钟表被制造出来的。
________________________________________________________________________6. 昨天是他们打扫的教室。
________________________________________________________________________7. 我是在大街上遇见她的父亲的。
________________________________________________________________________8. 我们弄清楚了我们要在何时何地开会。
________________________________________________________________________9. 据说所有的票都卖完了。
________________________________________________________________________10. 我们真的该采取行动了。
代词it和that的用法以及举例说明代词"it"和"that"都可以用来指代前面提到的某个事物或概念，但它们的使用场景和语气略有不同。
1. 代词"it"的用法和举例：代替一个具体的名词或名词短语，表示这个名词或短语所代表的事物。
代替一个抽象的概念或情况，表示这个概念或情况所代表的含义。
用于强调句型中，代替一个已经提到的事物或概念，表示这个事物或概念的重要性。
例如：It's a beautiful day.（今天天气很好。
）She bought it at the store.（她在商店里买了它。
）It seems like it's going to rain.（看起来好像要下雨了。
）It is important to exercise regularly.（定期锻炼很重要。
）2. 代词"that"的用法和举例：代替一个前面提到的名词或名词短语，表示这个名词或短语所代表的事物。
用于引导定语从句或名词性从句，表示从句所描述的事物或情况。
用于强调句型中，代替一个已经提到的事物或概念，表示这个事物或概念的重要性。
例如：That is my car.（那是我的车。
）She is the one that I was talking to.（她就是我刚才在和她说话的人。
）I think that he is right.（我认为他是对的。
）That is the book that I was reading.（那是我正在读的书。
）需要注意的是，"it"和"that"在一些情况下可以互换使用，但在一些特定的语境下，使用不当可能会引起歧义。
因此，在使用时需要根据具体情况进行选择。
“It”的用法-英语论文“It”的用法甘肃高台县第一中学高翔一、作人称代词（一）用于代替上文提到过的事物或整个句子所表述的事实。
This little dog is very lovely. It belongs to my neighbour.那只小狗很可爱，是我邻居的。
（二）用于指代人1.指代说话者心目中不太清楚的那个人，常在打电话或敲门时用。
—Who’s knocking at the door?谁在敲门？2.指代性别不详的婴幼儿或在不计较性别时，也可用it来指人。
（三）用于代替指示代词this和that练习1 完成句子1.你不能吃蛋糕，那是我的。
You can’t eat the cake and itacute;s_mine．2.汤姆考试没及格。
你听说了吗？Tom has failed in the exam. Have_you_heard_of_it?二、作非人称代词it有时并不指具体的东西，而泛指天气、时间、日期、距离、价值、度量、温度、环境等，称为非人称代词it。
It’s over 200 miles from London to Manchester.从伦敦到曼彻斯特有200多英里。
练习2 写出下列句中it指代的内容1.It was 12 oacute;clock when they came out of the hall.时间2.It’s damp and cold. I think itacute;s going to rain.天气三、作形式主语当动词不定式、动名词或从句作主语时，通常把它们置于句末作真正的主语，而使用it作形式主语。
（一）代替动词不定式常用句型为：1.It be＋adj.＋of sb. to do sth.该句型中的不定式短语是真正主语，如果不定式的逻辑主语由of引起，句中的形容词必须是表示逻辑主语特征的形容词(即句中的形容词是修饰逻辑主语的)。
常见的形容词有bad, brave, careless, clever, cruel, foolish, good (好心的), honest, horrible, kind, lazy, modest, naughty, nice, polite, rude, silly, stupid, wise, wrong等。
人称代词it的用法和例句一、人称代词it的基本用法和形式人称代词是英语中常用的代词形式，用来表示特定人或物，其中包括第一人称（I）、第二人称（you）和第三人称（he/she/it）。
本文将重点探讨其中的第三人称代词之一——it的用法和例句。
1.基本用法作为一个第三人称单数主格代词，"it" 在句子中常被用来指代非生物事物、动物或无性别的实体。
它的主要作用是引起注意、衔接上下文以及强调某个事物。
2.主要形式在成为语句主语时，"it" 作为第三人称单数主格代词只有一个形式，并不随性别或数量而改变。
在其他情况下，例如宾格、属格等时也不变化。
二、it 作为主语时的具体使用方式1. 指示特定事物当我们需要在一个句子中引入一个特定的事物并且不涉及其性别时，可以使用"it" 作为主语。
例句：- It is raining heavily today.今天雨下得很大。
- I found a book on the table. It seems interesting.我在桌子上发现了一本书。
它看起来很有意思。
2. 表示天气状况、季节等抽象概念"it" 经常用来表示天气状况和季节，尤其是在句子中没有具体的人或物可用作主语时。
例句：- It is hot in summer.夏天很热。
- It's early spring now, and the flowers are starting to bloom.现在是初春，花儿开始绽放。
3. 引出下文或特定情境当我们需要引入一个新的话题或者指代刚刚提到过的事物时，可以使用"it" 作为主语。
例句：- I have something to tell you. It is about your sister.我有件事要告诉你。
关于你姐姐的事。
三、it 的其他用法及实例分析1. 表示动物当我们讨论动物时，特别是非人类动物时，一般会使用“it” 来指代。
It作形式主语常见句型动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：1. It + be + 形容词+主语从句，如：It is uncertain whether he can come to Jenny’s birthday party or not.2. 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.3. 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 reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等，如：It seemed that he didn’t tell the truth.It happened that I was out when he called.5. It + be + 形容词+ for sb.）+ 动词不定式这类句型常用形容词easy, difficult, hard, important, possible，wise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，如：It’s necessary for the young to master two foreign language.It is unwise to give the children whatever they want.这类形容词有：easy, difficult, hard, important, possible，wise6. 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。
高中英语It的用法专项练习题(含答案)1.Was it during the Second World War that he died?2.Is it ___ the design before nal Day?3.I don't think it's possible to master a foreign language without much memory work.4.Does it matter if he can't finish the job on time?5.It was not until she took off her glasses that I realized she was a famous film star.6.I was disappointed with the film。
I had expected it to be much better.7.It was not until 1920 that regular。
broadcasts began.8.It is a fact that English is being accepted as an nal language.9.It was only when I ___.1.___ ___ already correct.2.___ ___ already correct.3.___ ___ already correct.4.___ ___ already correct.5.___ ___ already correct.6.___ ___ already correct.7.___ ___ already correct.8.___ ___ already correct.9.___ ___ already correct。
1.He died during the Second World War。
It 的用法1. it 常用作形式主语代替真正的主语不定式、动名词或从句。
●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，possible，likely，right，wrong，important，polite，clear，obvious，certain，useful，useless，dangerous…●It +be+ adj + of sb+to do sth = sb be +adj to do sth※此处adj. 通常为描述人的品质形容词：kind，nice，rude，cruel ，considerate，thoughtful，careful，careless，silly，foolish，stupid，clever，crazy, wise…●It + be +no use/ good/ useless + doing It is a waste of time/money doing stheg: It is a waste of time talking to him.●It + be + adj./ n. /v p. p. /ving+ that- clause※It is (amazing/surprisng/shocking/astonishing/disppointing…)that…“令人吃惊/失望的是…”※It is clear(obvious,true, certain…)that…※It is/ was +adj (important/ necessary/ urgent/ essential/ natural/ vital )+that从句（should do）※It is a pity/a shame/no wonder/strange+that从句表示“失望、惊奇、可惜、怀疑”等，should+v should不可省略※It is suggested/ordered/desired/requested/required/insisted/proposed/demanded/commanded/advised/recommended/urged+ that从句(shoud)+v※It is +v-ed+ that从句…=sb./sth. is + v-ed + to do /to be doing/to have doneIt is said (reported/learned/believed/thought/known/told/hoped/proved/universally acknowledged/ universally accepted/ universally recognized.....) that ...eg: It is said that he will go abroad . = He is said to go abroad.It is said that Bell invented the first telephone in the world.= Bell is said to have invented the first telephone in the world.It is universally acknowledged that dogs have an acute sense of smell.It is important for us to master a second language.It is considerate of you to turn down the radio when the baby is asleep.It is no use crying over spilt milk.It is a fact that English is being accepted as an international language.It needs further discussion whether we’ll build a lab-oratory or not.It is shocking that people in those areas should live in such overcrowded slums.It is suggested that he not go there alone.It is important that we should speak politely.It is no wonder that he should have made progress.（失望）It is a shame that he should break his promise.(责备)It is a pity that he should miss a wonderful film.（失望）It is strange that he should marry her.（惊奇）2. it 作形式宾语，代替后面的真正宾语不定式、动名词或从句。
※find/ think/ feel/ make/ consider +it +adj. /n.(for sb) +to do sth/that从句.※like/love/hate/appreciate + it + 从句※take it for granted that从句“认为…理所当然”※see to it that从句= make sure that从句“务必，确保。
”※depend on it that从句rely on it that从句“指望…放心…相信…”count on it that从句※put it that从句= say that从句eg: I think it necessary to discuss with him about this.I owe it to you that I have survived the disaster.We shall leave it to him to settle the matter.He saw to it that the work was finished on time.The teacher made it clear that the students should follow the instructions in the lab.I would appreciate it if you could help me with my English.I like it in the autumn when the weather is clear and bright.You may depend upon it that we'll never desert you.She took it for grounded that her own son would study medicine.I'm counting on it that you will come.I put it to you that Robert offered you money for that information.3. It +takes +sth +to do sth “做某事需要……”It takes sb +时间+to do stheg: ①It takes much patience to do the work.②It took us two hours to get there on foot.4. It +be +(high/about) time +(that)……did /should do“（早）是该做某事的时候了”eg: It is time that you went to school.It is time that you should go to school.5. It +is+the first (second…)time +that…have/has done “是某人第一（二，…）次做某事”It +was+the first (second…)time +that…had done（其中It 可换成This 或That，要特别注意此句型中主、从句的时态。
）6. It is / has been+段时间+since……（从句用一般过去时）“自从……已有多长时间了”eg: It is almost five years since we saw each other last time.7. It +is/ takes +long（段时间）+ before……It + will take/will be+时间段+before+一般现在时“要过很久…才”It + won’t take/won’t be+时间段+before+一般现在“不久…就”It didn't take/wasn't+时间段+before+一般过去时“没过多久…就”It took/was+时间段+before+一般过去时“过了很久…才”eg: It will be a long time before we finish the dictionary.It was not long before the thief was caught.8. It用于强调句型中：It is/ was +被强调部分+that +……It is/ was +not until… +that +……It was not until you told me that I had any idea of the plan.It was not until midnight that he got back home9. It +be +up to sb +to do sth “由某人负责做某事”10. It +be +one’s turn + to do sth “轮到某人做某事”11 It is likely that从句“…有可能”It is likely to do sth “做…有可能”It is possible that从句“…有可能”It is possible for sb to do sth “某人做…有可能”It is probable that从句“…很有可能/十有八九会…”12 It happens/happened that从句“碰巧…”13 It occurs/occurred to sb that从句“某人突然想起…”It strikes/struck sb that从句“某人突然想起…”14 It looks/seems as if/as though+从句Mary talked about Rome as if she had been there.When a pencil is partly in a glass of water, it looks as if it were broken.It seems as if Ken will winthe race.15 It seems/seemed/appears/appeared+thatIt seems that it is going to rain.16 It makes no/much difference…It makes no difference my being here.17 It doesn’t matter…It doesn’t matter what he says.实战演练：1. not all the government officials are honest. (seem)在我看来并非所有的政府官员都诚实。
