it容易错误句型讲解
It引起的几个易混淆的时间句型
needn‟t +have done“本没有必要 做…”表示做了本来不必去做的事。
1.She needn‟t have gone to the station yesterday. 昨天她本不必到火车站去的.（昨天她去了） 2.You needn‟t have bought it. 你本可不必买它的。 （你买了）
C 区别: (1) It was at ten o’clock _____ he came back (2): It was ten o’clock ______ A he came back
(3)It is ten years _____ they left D their hometown (4):It will not be long _____ we B finish the second year’s study
A: when C: that
B: before
D: since
That/ those一般不带前置定语，但必须有后置定语。 One/ones都可。当替换词的后置定语用所有格的 of 短语或当替换词被所有格修饰时，不用one/ones而 用that of/those of. Eg: I like the vase better than ________________in the one / that another shop.
It will be long before sb does sth. 要过很久才… It was long before sb did sth. 过了很久才… It won’t be long before sb does sth. 过不了多久就… It wasn’t long before sb did sth. 没过多久就…
初中英语语法学习之it用法混淆点
2024年初中英语语法学习之it用法混淆点it用法混淆点1．It is ＋adj．(＋for sb．／sth．) ＋to do sth．用于此句型的形容词有：easy，hard，difficult，possible，important，impossible，necessary，good，bad，exciting，interesting，surprising等。
2．It is ＋n．(＋for sb．／sth．) ＋to do sth．用于此句型的名词有：pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。
3．It is ＋adj．＋of sb．＋to do sth．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,silly, polite, impolite, friendly, foolish, clever 等。
4．It is ＋adj．（＋n．）＋doing sth．此句型中的形容词和名词常见的有：no／little use, no／much good, useless等。
5．It takes sb．＋一段时间＋to do sth．表示“做某事花费某人多长时间”。
6．It is ＋及物动词的过去分词＋that从句此句型中常见的及物动词的过去分词有：said, told, known, reported, recorded, thought, believed, considered等。
7．It ＋不及物动词＋that从句此句型中不及物动词常见的有：seem，happen，appear，matter 等。
8．强调句型：It is＋被强调部分＋that／who从句在使用强调句型时要注意，指人时可以用who或that，其它情况一律用that。
it作主语和it用于强调句型典型错误例析
it作主语和it用于强调句型典型错误例析1. 误：It is very kind for you to come to see me with a gift.正：It is very kind of you to come to see me with a gift.析：句中表语形容词kind描绘人，因此应用It is + adj. + of sb to do sth 句型，而不用It is + adj. + for sb to do sth句型。
2. 误：It is required that all the students would get to school before seven.正：It is required that all the students should get to school before seven.析：required, demanded, desired, suggested, advised, proposed, ordered 等词用于主语从句时，从句动词形式为should + 动词原形, should可以省略。
3. 误：He has done many good deeds for others and there is no doubt that he should be praised.正：He has done many good deeds for others and it is no doubt that he should be praised.析：句中that he should be praised作真正的主语，因此应用it作形式主语。
4. 误：It matters very much if you can pass the exam.正：It matters very much whether you can pass the exam.析：if不可引导主语从句，因此应改为whether。
高考英语复习之it的用法及改错十大典型
2）动词+介词+ it + that从句 能用于此句型的主要有：depend on, answer for, see to。 如： You may depend on it that he will turn up in time. I can’t answer for it that the boy is honest. I’ll see to it that all these letters will be sent to the post before twelve.
It is / has been +一段时间+ since ... 自从……已经……； It wasn’t / won’t be long before ... 没过多久就 / 很 快…… It’s + 时间段 + before ... 过……时间才…… 五、it与one的区别 两者均可代替前面提到的事物，区别是：it指的是与 前面已提到的事物为同一物，此时的it等于“the +名 词”；而one 指的是与前面已提到的事物为同一类物， 此时的one等于“a +名词”。如：
新高考英语词汇语法专题6：It易错点解题方法
新高考英语词汇语法专题06 It易错点解题方法It在英语中用法很广。
It 可以用作人称代词，也可以用作非人称代词，可作主语也可作宾语。
表示时间，地点，日期，天气，距离，温度等。
It的主要用法有3：1)代词; 2)形式主语；形式宾语。
3)强调句It.看下列句子中的It的用法，你能辨别吗？1.It is Friday today.2. It was very cold last Monday.3. It is about 8:30 now.4. It is 25km from my home to our school.5. It lies in the south of Xi'an city.6. It is 40°C ! You got a high fever!7. It is 5 yuan.Question: What does “it” in these sentences refer to?It refers to the following: 1 date；2 weather；3 time；4 distance；5 place；6 temperature；7 price看懂啦吗？It 可以用作非人称代词，作主语。
表示1 date；2 weather；3 time；4 distance；5 place；6 temperature；7 price 等。
Read and analyze the following sentences.What does “it” in these sentences refer to?1.It is obvious that the water was to blame.2.It is true that he will treat me for breakfast tomorrow.[答案]:it是形式主语。
[解析]：it是形式主语, 句子真正的主语是that引导的主语从句.牢记以下常用于该句型的形容词:It is clear /obvious /true /possible /certain /amazing /ridiculous /necessary /important /strange /natural /impossible /urgent等+ that从句.思考：为什么要用it做形式主语而把真正主语放到后面去？遵循英语语言的平衡原则，避免句子头重脚轻。
Ｉｔ引导的几个易混淆的时间句型
Ｉｔ引导的几个易混淆的时间句型众所周知，it的用法非常复杂，它是中学阶段的重点语法之一，且是高考考纲规定内容之一。
它不但可以充当形式主语，而且可以用来改变句子结构，使句子的某一成分得到强调，引导强调句型。
此外，它引导的几个时间句型更容易使学生混淆。
下面，就这几个句型浅谈一二。
一、 It+be+时间+before-clause这个句型中的时间一般为表示一段时间的词语（a long time，long years，weeks，a few days，several months，many hours，minutes），若主句中的谓语动词用肯定式，意为“过多长时间才……”。
若主句的谓语动词是否定式时，我们可以将其译为“没过多长时间就……”，主句的时态可以用过去时was或将来时will be。
用was时，before从句的动词也用一般过去时；用will be时，before 从句常常用一般现在时表示将来时。
例如：It was long before he learned those boring poems by heart yesterday afternoon.昨天下午他过了好久才背会那些枯燥的诗歌。
It was not long before the police arrived at the spot where the accident happened.警察没过多久就到达了事故发生的现场。
It will be weeks before they finish doing their homework.要过好几周他们才能完成家庭作业。
It will not be weeks before they understand each other.他们要不了几周就会互相了解的。
二、 It+be+时间+since-clause这个句型表示从since-clause谓语动作发生以后到现在或过去所经过的一段时间，意为“自从……以来已经多久了”，主句多用一般现在时，从句用一般过去时。
高考必考语法改错之it用法十大经典错误
It作为非人称代词,泛指距离
作为非人称代词
1)起指示代词的作用， 指一个人或事物 — Who is knocking at the door？ — It’s me. 2) 泛指天气 今天阳光灿烂。 It’s sunny today. 3) 泛指时间 她回来时已经快半夜了。 It was nearly midnight when she came back.
it
注意！ It的一些习惯用法 意思是“如果我有办法的话，我可不喜 欢工作到深夜。” I can’t help it. 我没有办法。
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。
注意！
代词it十大典型错误例析
【改错】 固定结构 8.You may depend on that they will ^ support you. it
注意！
固定结构depend on it that... 表示“相 信某事”，it为形式宾语。
代词it十大典型错误例析
【改错】
9. If you’re buying today’s paper from the stand， _ could you get it for me？
4) 泛指环境 这里很吵。 It is noisy here. 5) 泛指距离 去市中心要走半个小时的路。 It is half an hour’s walk to the city center.
容易混淆的it的句型
3 It is/was+时间名词+when… (时间状语从句) 当我们到家时已是1点了. It was one o’clock when he got home. 4 It is/was +时间状语+that…(强调句) 我们是在1点回家的. It was at one o’clock that he got home. 5 It is the first time (that)… 我第一次到这来. It is the first time that I have been here. 6 It is time that….did/should do… 现在该是我们开始上课的时候了. It is time we began our class now.
容易混淆的it的句型归纳:
1 It is/has been+时间名词＋since ...did (时间状语从 句） 自从 … 以来,已是… 2 It is＋时间名词＋before… (时间状语从句） 要过…才… 3 It is/was+时间名词+when… 时间状语从句 当…时 4 It is/was +时间状语+that…(强调句) 5 It is the first time (that)…. 第一次… 6 It is time（ that）….did/should do… (定语从句） 该是… him in chess yesterday. It was the first time____ that I had won the game. that 8.Isn’t it time _____we took immediate action to fight against pollution now. 9.It is the very room ______I where used to study. that I used to study. 10.It was in the very room ____ that 11.It was at almost midnight ____he fell asleep. 12.It was almost midnight______ when he finished the work.
【高考英语】“It句型辨析”内训讲义
【高考英语】“It句型辨析”内训讲义高考英语中，与it 有关的句型特别多，经常容易搞混淆。
先收藏再慢慢学习。
1) It was +一段时间+ before +主语+did: “过了…（时间）才”2）It will be +一段时间+ before +主语+do : “要过…(时间)才” （主将从现）3）It is (或has been) +一段时间+ since +主语+did: “自从…已有…(时间)了”对比：It was +一段时间+ since +主语+ had done4) It was + 时间点 + when + 从句：5) It is / was + 被强调部分 + that （who指人）+ 其余部分：强调句型6）It is / was + 表语 + that + 主语从句7) It / This/ That is the first / second / last time ( that) + 主语 + have done (现完)对比：(1) It / This was the first / second time ( that) + 主语 + had done (过完)(2) It /This is the adj.最高级 ( + 名词) + （that）+ 主语 + have done1. it 固定句型(1) as sb puts it 像某人所说的那样 (2) feel like it 愿意……(3) when it comes to 说起……(4) take it for granted that...想当然，理所当然地认为(5) It occurred to sb. that... = It struck sb. that... = It dawned on sb. that... 某人突然想起(6) It goes without saying that... 理应如此/不言而喻.(7) It's not /just like sb. to do sth.……的行为不/正像某人的一贯作风.(8) (Just) as sb puts it：按照某人的说法 (9) It pays to do sth.：做某事是有价值的（有用的）(10) It is no use doing sth. 做某事是没有用的2. It is (表褒贬义)adj. + of sb. to do sth.对比：It is (表中性)adj. + for sb. to do sth.3. How did it come about that +从句？= How come…? 怎么会...?4. It is（high）time＋（that）＋主语＋V-ed ( 或should + V)5. It is + V-ed + that +主语 + do (have done) = 主语 + be + V-ed + to do对比：1) It is + V-ed + that +主语 + did = 主语 + be + V-ed + to have done常见动词：say, believe, think, expect, hope, decide, arrange, suggest, require,order, know2) 主语+ seem / appear ( to be ) +表语 = It seems / appears that + 主语 +be + 表语典例：(1) It was some time before I realized the truth. 过了很长一段时间我才了解到真相。
易错点12 名词性从句(4大陷阱)-备战2024年高考英语考试易错题(解析版)
易错点12 名词性从句目录01 易错陷阱（4大陷阱）02 举一反三【易错点提醒一】主语从句连接词what/that/whether/if易混易错点【易错点提醒二】宾语从句引导词及介词后接宾语从句易混易错点【易错点提醒三】表语从句引导词及三个句式易混易错点【易错点提醒四】同位语从句与定语从句易混易错点03 易错题通关易错陷阱1：主语从句连接词what/that/whether/if易混易错点。
【分析】1.that引导主语从句时，无词义，只起连接作用，一般不能省略。
what在从句中作主语、宾语、表语和定语。
2.whether引导的主语从句可放在句首，if引导主语从句在句尾，且用it作形式主语。
3.It作形式主语，that引导真正的主语从句。
4.What引导主语从句时，谓语动词一般用复数形式，若表语是复数，则谓语用复数。
易错陷阱2：宾语从句引导词及介词后接宾语从句易混易错点。
【分析】1.doubt用于肯定句时，宾语从句用whether，doubt用于否定句时，宾语从句用that 引导。
2.介词后跟宾语从句时只能用wh-类连接词引导；如：I’m surprised at what he said.3.介词后如果跟that从句，要先加it作形式宾语，再加that从句。
如：depend on it that...; rely on it that...; see to it that...等。
4.宾语从句的时态：主句是现在时或将来时，从句用句意的各种时态。
主句是过去时，从句用相应的过去时态。
从句表示客观事实或真理，从句都用现在时。
易错陷阱3：表语从句引导词及三个句式易混易错点。
【分析】1. as if/as though 引导时，从句可用陈述语气，也可以用虚拟语气。
2.That is why+结果，表示“那就是.....的原因”。
3.That is because+原因，表示“那是因为......”。
4.The reason why/for... is that ..., 表示“......的原因是......”。
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1.It is three years since his father passed away . 2.It will be one month before we become the students of Grade three. 3.It was already 8 o‘clock when we got home .
练习：
D China 1.----How long do you think it will be _____ sends a manned spaceship to the moon? ----Perhaps two or three years. A.when B.until C.that D.before
B killed ____ eight-year-old girl 2. It was Bird flu ____ in April, 2006. A.which; the B. that; an C. which; an D. that; the
Ａ we’ll 3. Will it be nine o’clock tomorrow ____ have the meeting? Ａ．when B. while C. that D. where 4. --___ C will direct 2008 Olympic ceremonies? ---Not Li An but Zhang Yimou. A. Which is it that B. Whom is it that C. Who is it that D. What is it that B we enjoy football 5. It won’t be a long time ____ matches of the 2010 World Cup. A. unቤተ መጻሕፍቲ ባይዱil B. before C. when D. after
1. This is the first time (that) these Europeans ____________the Great Wall . (visit) have visited
had paid 2. It was the fifth time (that) I ___________a friendly visit to Africa . (pay)
(= It is time that we should hand in our exercises .)
5.It / This / That +is/was+the first \second\third time + that-clause (1)这个句型表示截止到说话时为止的某人的一种经历， 关键是注意time前有序数词， (2)主句是 is 时 ，从句要用现在完成时；如果主句用 was ，从句用过去完成时。例如：
It引起的几个易混淆的时间句型:
1. It + be +一段时间 + since-clause 意思为 “自从......以来已多久了” 2. It + be + 一段时间 + before-clause 意思为 “过了多长时间就......” It was 一段时间 before sb did sth It will be 一段时间 before sb does sth 3. It + be + 时间点 + when-clause 表示时间的词语前没有介词(时间一般为时刻时间) It was already 8 o‘clock when we got home .
6. ---Is your grandpa still smoking? ---No. It’s years ____ D he smoked. Ａ．after B. before C. when D. since 7. ---Have you been here before? ---Yes, it’s the third time ____ D I ____ the Bell Tower. A. when; visited B. that; visited C. when; have visited D. that; have visited
It的虚拟句型: 4.It + be + time + that-clause 这个句型属虚拟语气结构，不管主句中用的是 is 或 was ，that从句都须用动词的过去式或 should + 动词原型(但不及用过去式普通)，在 time之前有时可加上high或about 以加强语气 。例如： It is time that we handed in our exercises.
6.It 用于强调句 It+is/was+强调部分+who (whom)/that+ 其他部分 Nancy saw your sister in Tokyo last week. It was Nancy who saw your sister in Tokyo last week. It was your sister whom Nancy saw in Tokyo last week. It was in Tokyo that Nancy saw your sister last week. It was last week that Nancy saw your sister in Tokyo.