it的10大句型
it做形式主语的19个句型
1.It is/was + 被强调部分+ that/who ...该句型是强调句型。
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。
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.3. It is clear /obvious/true/possible/certain… that …该句型中it 是形式主语，真正的主语是that 引导的主语从句，常译为“ 清楚（显然，真的，肯定……）”是主语从句最常见的一种结构。
It is very clear that he's round and tall like a tree.= That he's round and tall like a tree is very clear.4. It is important /necessary/ right/strange/natural... that ...+(should) do该句型和上一个同属一个句型。
it做形式主语的19个句型
1.It is/was +被强调部分+ that /who ...该句型是强调句型。
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。
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 glassesthat I realized she was a famous film star.= Not until she took off her dark glasses didI realize she was a famous film star.= I didn't realize she was a famous film star until she took off her dark glasses.3. It is clear /obvious/true/possible/certain ? that?该句型中 it 是形式主语，真正的主语是 that 引导的主语从句，常译为“清楚（显然，真的，肯定??）”是主语从句最常见的一种结构。
It is very clear that he's round and tall like atree.= That he's round and tall like a tree is very clear.4.It is important/necessary/ right/strange/natural... that ...+(should) do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（ should+ 动词原形）， should 可以省去。
it做主语的句型
IT 作为主语的句子类型主要包括以下几种：1. 一般陈述句：例如：IT is a beautiful day.（今天是个美好的一天。
）2. 疑问句：例如：What about IT?（怎么样？）3. 否定句：例如：IT isn't working.（它没在运作。
）4. 祈使句：例如：IT needs fixing.（它需要修理。
）5. 感叹句：例如：How amazing IT is!（多么惊人啊！）6. 一般疑问句：例如：Does IT work?（它运作吗？）7. 特殊疑问句：例如：Which IT do you mean?（你指的是哪个？）8. 选择疑问句：例如：Do you want IT or that one?（你要哪一个，这个还是那个？）9. 被动句：例如：IT is being repaired.（它正在被修理。
）10. 宾语从句：例如：I think IT is a good idea.（我认为这是个好主意。
）11. 状语从句：例如：However IT happens, we should be prepared. （无论怎样，我们都应该做好准备。
）12. 名词性从句：例如：IT is obvious that he is talented.（他很天赋。
）13. 条件句：例如：If IT rains, we will stay indoors.（如果下雨，我们就在室内活动。
）14. 虚拟语气：例如：What would IT be like if IT were summer? （如果现在是夏天，它会是什么样子？）15. 比较级和最高级：例如：IT is the best solution.（这是最好的解决方案。
）16. 倍数表达：例如：IT costs twice as much as that.（它的价格是那个的两倍。
）17. 并列句：例如：IT rains and snows simultaneously.（雨和雪同时下。
It的句型及用法
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句型归纳最全总结.docx
It句型归纳总结I． It作形式主的句型①It + be + adj (kind , wise , careless, clever⋯) + of sb to do sthEg: It is wise of him to make such a decision.他做出的决定是明智的。
②It + be + adj(easy , safe , common , normal⋯) + for sb to do sth句型中adj 若 important, necessary, natural, possible, strange, vital, essential 等可改从句 ,从句用.Eg: It’svery dangerous for children to play with fire.It is important for us to learn English well.(= It is important that we (should) learn English well.)should+原形。
③It + be +V-ed( reported, believed, said, suggested ⋯ ) + that 从句句型中：⑴若 V-ed reported, believed, said 等常“据道”，“据”，“据”。
⑵若 V-ed suggested, ordered, demanded, insisted 等表示“建”,“命令”的，从句要用虚气 (should)+原形。
Eg: It is suggested that the book (should) be revised.It’s said that Tom has been back from abroad. (=Tom is said to have been back from abroad.)④It + be + n (a pity, a shame, a fact , good news ⋯ ) + that 从句 :?句型中，从句一般用(should) + 原形，表示出乎意料，常＂竟然＂。
It的13个常用句型及其运用!书面表达必备!
It的13个常用句型及其运用一、it句型的归纳：（一）it作形式主语的6个句型①It is + adj. （=of n.） + for sb. to do sth. / that... 某人做某事是..... 的It is vital /of great significance for students to take regular exercise.定期进行锻炼这对学生来说太重要了。
②It is a shame / pity that... 很遗憾....It is a pity that I cannot go to see the movie on Saturday evening.碰巧那天下午我我花了很长时间才将工作做完（二） it作形式宾语的4个句型⑦think / consider / find / feel / make + it + adj. + to do/clauseI think it best that you should stay here. 我认为你留在这里最好。
She found it hard to answer the question. 她觉得回答这个问题很困难。
⑧think / consider / find / feel / make + it + n. + to do sth.I think it a pity to waste time like that. 我认为那样浪费时间真是太可惜了I would appreciate it if you could do us a favour. 如果您能帮我们一把，我将不胜感激（三）含it的3个特殊句型① It is the + 序数词+ time that sb. have / has done sth. 某人第几次做某事。
It is the first time that he has come to China. 这是他第一次到中国。
It 引导的句型结构
It 引导的句型结构1． It + be + adj. ( for sb.) to do sth. “（对某人来说），做某事很…”. It is important for us to learn English well. 对我们来说，学好英语很重要。
Exercises对璐西来说，解这道数学题很容易。
对安娜来说，这个包太沉了。
2．It + be + adj. + of sb. to do sth. “某人做某事很…”. It was foolish of her to waste money on such clothes.她真蠢，把钱都花在买这样的衣服上。
Exercises你人真好，帮我这个忙。
他真残忍，杀死了那么多无辜的人。
你真聪明，能想出这么一个好办法。
3. It + be + adj./n. + that …“. It is very important that we (should) pay more attention to spoken English.重要的是，我们应该更加重视英语口语。
Exercises沮丧的是，他并没有通过考试。
激动的是，这支球队最终赢得了比赛的胜利。
4．It + be + n. +. It is no use crying over the spilt milk. 覆水难收。
Exercises吸烟没有任何益处。
5． It + be + some time + since…“从…时起已有多长时间”It is ten years since he had left China. 他离开中国已经十年了。
6． It + be + (said, reported, believed…) + that….It is said that he will leave for Beijing on Tuesday.7． It + be + time + ( that )…. 是该做什么的时候了。
It句型归纳
It句型归纳It 句型归纳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。
如：It is necessary to change your job．It was very hard for them to walk such a long way in the snow．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。
如：It is a pity for you to have missed such a wonderful play．错过如此精彩的表演太可惜了It is bad manners for the young to take up the seats for the old．占据老年人的座位这件事是不好的行为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。
如：How silly it was of you to give up such a good chance！放弃如此好的机会，真是太傻了It is friendly of the family to try to make me feel at home in their house．这一家人太友好了，让我感觉到了自己家似的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。
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10.It is necessary that...
10、It is necessary that we should master a foreign language.我们掌握一门外语是必需的。 这是主语从句，在“It is+少数形容词+that sb should do …”这种句型中，it同样是形式主语，that之后从句 的谓语动词是“should+动词原形”，其中should可 以省略。这样的形容词有 necessary/important/unusual/strange/natural等
2、It is the first time that I...
2、It is the first time that I have written to a foreign pen friend. 这是我第一次给一个外国 笔友写信 这是定语从句，that之后的时态要 用现在完成时态。
3、It was ... when... 3、It was eight when the class began.8点钟开始上课。 这是时间状语从句，强调句型： It was at eight that the class began.
4、It is possible that...
4、It is possible that I will enter this key university. 我上这所重 点大学是可能的。 这是主语从句。It是形式主语。that I will enter this key university是真正主语。还原成： That I will enter this key university is possible.
Every storm runs, runs out of rain. Just like every dark night turns into day.
每场暴风雨后，必然迎来晴 天； 正如所有黑暗的尽头， 都是黎明
老师:董晓芸
1、It was +被强调部分+ that...
1、It was for the first time that I wrote to a foreign pen friend.这确实是我第一次给一个 外国笔友写信。 这是强调句型。还原为： I wrote to a foreign pen friend for the first time.
9.It seems to sb that…
9、It looks as if it is going to snow.看起来要
下雪了。 这时表语从句，类似的句型还有：It seems to
sb that…/ It (so)happened that…/ It appears to sb that(=as if)…等。
5.It is/has been +一段时间 +since
5、It is/has been three years since he got married.他结婚（成家）已经三年了。 It is/has been some time since sb did(短暂性 动词)sth.意为“自从某人干某事已经有多长 时间”例如： It is/has been three years since he worked here.他不在这儿工作已经三年了。
6.It is/was/ will be some time before…意为“过多长时间后再干什么”。
6、It will be one year before she finishes middle school.再有一年时 间她就中学毕业了。 It is/was/ will be some time before…意为“过多长时间后再 干什么”。
7.It is（high）time that…
7、It is high time we went to school.我们上学的时间到了。 这时定语从句，在It is（high）time that…句型中，that之后谓语动词
的时态要用一般过去时或 “should+动词原形”，属于虚拟 语气。
8.it is+过去分词+that…
8、It is said that a new factory will be built nearby my hometown.据说一家新工厂将 见在我家乡附近。 这时主语从句。 it is+过去分词+that…..。类似的句型还有：It is reported that…/ It is known that…/ It is thought that…/ It is suggested that…/ It is believed that…/ It is hoped that…等。