请问it的用法有哪些？帮我列出来谢了。看书没看懂 英语高手帮我看下我的文章。谢了
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1\u3002Because of the Internet\u2019s popularity in the 21th century, we often take our books for granted. However\uff0c have you ever thought if it isn't so easy to find a copy of your favourite book? (\u6b64\u53e5\u7528\u5b8c\u6210\u65f6\uff1b\u6ca1\u6709\u5fc5\u8981\u865a\u62df)What if the printing press hasn't been invented? (have-has,\u5efa\u8bae\u7528\u4e00\u534a\u73b0\u5728\u65f6\u5c31\u884c\u4e86\uff0c\u9610\u8ff0\u4e00\u4e2a\u4e8b\u5b9e\uff0chasn't been -isn't)Well, there may never have been a Renaissance and we probably won\u2019t have the technology that we are having right now!
2\u3002Before the invention of the printing press, books had to be written by hand and were usually owned by the rich or by large organizations ,for example, the church.(\u8fd9\u6837\u6539\uff0c\u505c\u987f\u8f83\u597d) But after Johann Gutenberg invented the printing press in the fifteenth century, the rarity of books dropped sharply. The spread of information and technology resulted in the spread of ideas.(\u4e0d\u9700\u8981\u52a0\u8fde\u8bcdafter\uff0ccame-resulted in \u5bfc\u81f4\uff09 The Renaissance could never have occurred without being able to print ideas and spread them to the world.
3\u3002Even though the printing did exist before Gutenberg\u2019s time, he stood apart from the previous machines by allowing much faster printing\uff08\u4e0d\u52a0for\uff09, which led to the rapid spread of information. His invention had great effect on literacy\uff08\u7528\u4e00\u822c\u8fc7\u53bb\u65f6\uff0cmade-had\uff09, history and the way we present our information today. His printing press was probably to the fifteenth century of what the internet was to the twentieth century.\uff08\u8fd9\u53e5\u8bdd\u4ec0\u4e48\u610f\u601d\uff1f\uff09
4\u3002Of all the greatest inventions\uff08invention\u53ef\u6570\uff09, probably\uff0cthe printing press is more than other inventions with the most impact. \uff08\u8fd9\u6837\u6539\u8f83\u597d\uff09Although it only makes literature more available, \uff08\u9648\u8ff0\u4e8b\u5b9e\u7528make\uff09this new invention that accesses\uff08assess\u52a0es\uff09 to literature has opened the door to the renaissance and the Scientific Revolution. Researchers and scientists\uff08\u590d\u6570\uff09 can learn from one another and share their ideas with others.\uff08share with\uff09 Their ideas will be readily available for the next person to build their researches on\uff08\u8c03\u6574\u8bed\u5e8f\uff09which help the development of technology.
5\u3002We are living in the \u201cinformation age\u201d, where we have the world at our fingertips by using the World Wide Web. Through the internet \uff0cwe have access to news, literature, reference and music \uff08\u6539\uff09. However, if the invention of the printing press isn't \uff08\u6700\u597d\u6539\u6389\uff09invented, we probably won\u2019t have the technology that we have right now. John Man suggested in his book,\u201d Gutenberg\u2019s invention made the soil from which sprang modern history, science, popular literature, the emergence of the nation state so much of everything by which define modernity.\u201d
6\u3002Without the printing press\uff0c many important documents and speeches could have been lost. The Holy Bible may have been published in different versions. Abraham Lincoln\u2019s \u201cEmancipation Proclamation\u201d and Martin Luther King\u2019s \u201cI have a dream\u201d speech could have been lost or changed by hearsay. We may not even listen to \uff08\u6539hear\uff09 the same music that played during Mozart and Beethoven\u2019s time. In a word\uff08\u4e0d\u662fworld\uff09\uff0c without printing press, we could still be living in a literacy dark age.
Gutenberg\u2019s printing press did change our world; it changed the history, technology and the future of human being. It definitely should be a reminder of not taking our books, our history and our knowledge for granted.\uff08\u6539\uff09
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1.It is+被强调部分+that
该句型是强调句型，将被强调的放在前面，其他部分置于之后，强调的主语如果是人，可以用来替换，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他从句的方法。
It was they that (who) cleaned the classroom yesterday. It was in the street that I met her father.
It was with great joy ___he received the news that his lost daughter had been found. (2004 福建)
A. because B. which C. since D. that (D)
2. It is not until +被强调的部分+ that
该句型译成汉语“直到……才”，可以说是的强调形式。It was not until she took off her dark glasses that I realized she was a film star. =Not until she took off her dark glasses did I realize she was a film star. =I didn’t realize she was a famous film star until she took off her dark glasses.
It was ___back home after the experiment. (2004 湖北)
A. not until midnight did he go
B. until midnight that he didn’t go
C. not until midnight that he went
D. until midnight when he didn’t go (C)
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…
该句型和上一句同属一个句型。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。建议记住该句型中的形容词。
It is important that we (should) learn English well.
It is necessary that he (should) remember these words.
5. It is said (reported, learned…) that…
该句型中的it 仍是形式主语，真正的主语是that 引导的主语从句。该结构常译为“据说（据报道，据悉……）
It is said that he has come to Beijing.
It is reported that another earth satellite has been put into orbit.
6. It is suggested (ordered…) that…
该句型和上一句属一个句型。主句中的过去分词是表示请求、建议、命令等词时，that后的从句要用虚拟语气 （should+动词原形）。可以省略，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.
7. It is a pity (a shame…) that …
在该句型中，that后的从句一般用虚拟语气（should+动词原形），should可以省去，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.
这种事竟然发生在你们班上，真是遗憾。
It is a pity that he is ill.
他生病了，真遗憾！
8. 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：常用过去时态表示虚拟，有时也用should+动词原形，should 不能省。常译为“是（正是）……的时候……”
It is time that children should go to bed.
=It is time that children went to bed.
9. It is the first (second, …)time that…
该句型应和上一个句型区别开来。该句型中不用虚拟语气，而用完成时态。至于用哪种完成时态，由主句的谓语动词的时态来决定。如果是一般现在时，从句用现在完成时态；如果是一般过去时，从句则用过去完成时态。该结构中that可以省去；it有时用this替换，常译为“是第一（二,…）次…”。
10. It is …since…
该句型主要用作处理瞬间动词的完成时，要和表示一段时间的时间状语连用。主句中是时间作表语，其时态是现在时和完成时，引导的从句通常是一般过去时态，而且是瞬间动词。如果主句是一般过去时，从句则用过去完成时。
It is (has been) 5 years since his father died.
It is almost five years ___we saw each other last time. (2005 北京)
A. before B. since C. after D. when(B)
11. It is …when…
该句型中的when引导的是一个时间状语从句，主句中的it指时间，表语由具体的时间充当。常译为“当……的时候，是……”
It was 5 o’clock when he came here.
12. 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等表示时间段的词和短语。常译为“…之后才”，“没过……就……”
It was 3 days before he went to Beijing.
It will not be long before he finishes his job.
13. It happens (seems, looks, appears) that…
该句型中的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 (so happened) that he met his teacher in the street. (碰巧……)
It seems that he will be back in a few days. (看来……)
The Foreign Minister said, “___our hope that the two sides will work towards peace.” (2004北京)
A. This is B. There is C. That is D. It is (D)
14. It takes sb…to do sth.
该句型中的不定式是真正的主语，是形式主语，句型中的直接宾语是时间。常译为“做……要花费某人……”
It took thousands of people many years to build the Great Wall.
15．It is no good (use) doing sth.
该句型中的真正主语是动名词短语，主句中的表语可以是 no good (not any good), no use (not any use ).
It is no good learning English without speaking English.
16. It doesn’t matter whether…
该句型中的引导的从句是真正的主语，该句型译为“不论（是否）……没关系……
It doesn’t matter whether they are old.
17．It is kind (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是由of引出，主句中的形容词必须是能表示逻辑主语的形容词。常见的有：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等。这个句型可以改写为sb.is kind to do sth.
It is kind of you to stay so =You are kind to say so.
18. It is necessary (for sb) to do sth
该句型与上一句统属一个句型。如果不定式的逻辑主语是由for 引出的，主句的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的形容词。常见的形容词有：
Important,necessary,natural,easy,safe,common,,normal,hard,difficult,dangerous,unusual,grape, impossible, pleasant.等。
It is important for her to come to the party. =It is important that she (should) come to the party.
19. 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：“看起来好像……”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 was ill. （事实上没有生病）
It seemed as if he was dying.
20. We think it important to learn a foreign language.
该句型中的it作形式宾语。为了记忆方便我们可称该句型为“7123结构”
7指主句中的常用的动词：think, believe, make, find, consider, feel, take.
1指的是形式宾语it .
2指的是宾补的两种形式：形容词和名词
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。
We think it our duty to clean our classroom every day.
XiaoLi felt it important learning English well.
They found it difficult that they would finish their work in two days.
-Do you like ____here?
-Oh, yes .The air, the weather, the way of life. Everything is so nice. (2004 全国卷二)
A. this B. these C. that D. it (D)
分析：it作形式宾语
意思是它
什么地方都可以用
因为这是名词副词结合的~
在我看来 考试用到it 的主要是形式主语 也就是楼上说的各种句型
就是无论什么句型 他都充当着主语或者宾语
绛旓細1.浣滃舰寮忎富璇銆傝嫳璇腑涓嶅畾寮忋佸姩鍚嶈瘝銆佷富璇粠鍙ュ湪浣滀富璇椂涓昏寰寰鏄惧緱寰堥暱锛屼娇鏁翠釜鍙ュ瓙鐪嬩笂鍘绘湁鐐 澶撮噸鑴氳交锛岃繖鏍峰氨鍊熷姪鈥渋t鈥濇潵浣滃舰寮忎笂鐨勪富璇紝鑰屾妸鐪熸鐨勪富璇Щ鍒板彞瀛愬悗杈瑰幓锛屼娇鍏ㄥ彞鐪嬩笂鍘诲钩绋充竴浜涖 鈥渋t鈥濇病鏈夊疄闄呯殑鎰忎箟銆侷t is fun for her to study, but it is difficult to studyand ...
绛旓細浜屻両t is +鍚嶈瘝+瀹氳浠庡彞 It was the day my grandmother was angry.閭ｄ竴澶╂垜澶栧﹩鐢熸皵浜嗐備笁銆両t is +鍚嶈瘝/褰㈠璇+涓嶅畾寮忎富璇 It鍋氬舰寮忎富璇紝鍙ュ瓙鐪熸鐨勪富璇槸涓嶅畾寮忋侷t was a pleasure to draw pictures.鐢荤敾鏄竴绉嶄韩鍙椼傚洓銆両t is + no use + 鍔ㄥ悕璇嶄富璇 It鍋氬舰寮忎富璇紝鍙ュ瓙鐪熸鐨勪富璇槸...
绛旓細it鐨勭敤娉 (1)it浣滄棤浜虹О浠ｈ瘝锛歩t浣滄棤浜虹О浠ｈ瘝琛ㄧず鑷劧鐜拌薄銆佹皵鍊欍佹椂闂淬佽窛绂荤瓑.it鏄舰寮忎富璇病鏈夎瘝姹囨剰涔.濡锛 1)It is very cold today锛(姘斿) 2)It is three o'clock锛(鏃堕棿) 3)It is along way from here锛(璺濈)(2)it浣滀汉绉颁唬璇嶏細it浣滀汉绉颁唬璇嶆椂,鐢ㄦ潵浠ｆ浛涓婁笅鏂囦腑鎻愬埌鐨勪簨鎴栫墿,鏈...
绛旓細鈶.鎸囨棩鏈:It is April First today. 鈶.鎸囪窛绂:It is some 3000 kilometers from A to B.鈶.鎸囦环鍊:It is three dollars. 鈶.鎸囨俯搴:Today it is 30 degrees centigrade.涓夈佸叾浠栫敤娉 1.鍦ㄥ彞瀛愮殑涓昏涓嶅お鏄庣‘鏃跺厖褰撲富璇紝琛ㄧず璋佸湪鍋氭煇浜嬶細鈶燱ho is it there? It's I (me/you/he...
绛旓細It 鐢ㄦ硶澶у叏涓銆佹寚鏃犵敓鍛姐佸姩鐗┿佹鐗╁拰鍦ㄦу埆涓嶈鎴栦笉璇︽椂鎸囦汉鍜屽┐鍎裤There is a person knocking at the door. Who can it be?浜屻佹寚蹇冪洰涓殑浜烘垨涓婃枃涓彁鍒扮殑浜烘垨浜嬬墿,杩欓偅瀹 He is fifty-two, but doesn't look it.Jim is ill. Have you heard of it?涓夈佸彲浠ヤ唬鏇挎寚绀轰唬璇峵his鍜宼hatWhat's ...
绛旓細It 鐨 鐢 娉 1. 瑕佺偣鎻愮ず it鍙互鐢ㄤ綔浜虹О浠ｈ瘝锛屽畠杩樺彲浠ユ寚鏃堕棿銆佸ぉ姘斻佽窛绂汇佷笂涓嬫枃绛夛紝鍙﹀锛宨t杩樺彲浠ヤ綔鍏堣璇嶏紝浣滃舰寮忎富璇拰褰㈠紡瀹捐銆 2. 鐢ㄦ硶鎸囧崡 (1)浣滀负浜虹О浠ｈ瘝锛宨t鍙互鐢ㄦ潵鎸囦笢瑗裤佸姩鐗┿佸┐鍎垮拰鏈‘瀹氳韩浠界殑浜恒 Where's my book? Have you seen it? 鎴戠殑涔﹀湪...
绛旓細It鐢ㄦ硶灏忕粨 it鍦ㄨ嫳璇娉曚腑灞炰汉绉颁唬璇嶏紝鎰忔濇槸鈥滃畠鈥濓紝鐢ㄦ潵鎸囦汉浠ュ鐨勪竴鍒囩敓鐗╁拰浜嬬墿銆傚畠鐨勭敤娉涓嶄粎涓嶇畝鍗曪紝鑰屼笖寰堝鏉傘備竴銆佺敤浜庢寚浜轰互澶栫殑涓鍒囩敓鐗┿佹棤鐢熷懡鐨勪笢瑗垮拰浜嬫儏銆備竴鑸寚璇磋瘽鑰呭績鐩腑宸茬粡浜嗚В鎴栨墍鎸囩殑鐢熺墿銆佹棤鐢熷懡鐨勪笢瑗挎垨浜嬫儏銆佹病鏈夋у埆鐨勫尯鍒嗭紱鍙互鏄彲鏁板悕璇嶏紝涔熷彲浠ユ槸涓嶅彲鏁板悕璇嶏紝鍦ㄥ彞瀛愪腑...
绛旓細It 鐨甯哥敤鍙ュ瀷鏈変互涓20绉嶏細1. It is + 琚己璋冮儴鍒 + that ...璇ュ彞鍨嬫槸寮鸿皟鍙ュ瀷銆傚皢琚己璋冪殑閮ㄥ垎鏀惧湪鍓嶉潰锛屽叾瀹冮儴鍒嗙疆浜巘hat涔嬪悗銆傝寮鸿皟閮ㄥ垎鍙互鏄富璇紝瀹捐锛岃〃璇垨鐘惰銆傚己璋冪殑涓昏濡傛灉鏄汉锛宼hat鍙互鐢眞ho鎹㈢敤銆傚鏋滄妸杩欑鍙ュ瀷缁撴瀯鍒掓帀鍚庯紝搴旇鏄竴涓畬鏁存棤缂虹殑鍙ュ瓙銆傝繖涔熸槸鍒ゆ柇寮鸿皟鍙ュ瀷涓庡叾瀹...
绛旓細鎴戜滑璁や负浣犲緢鏈夊繀瑕甯姪浠栥侷 felt it a surprise that they were all unfriendly to me.鎴戞劅鍒版儕濂囩殑鏄紝浠栦滑瀵规垜閮戒笉鍙嬪ソ銆傛敞鎰忥細鑻ユ绫诲姩璇嶅悗闈㈡病鏈夊舰瀹硅瘝鎴栧悕璇嶄綔瀹捐琛ヨ冻璇紝鍒欎竴鑸笉鐢 it 浣滃舰寮忓璇傚涓嶅彲璇达細 We consider it that you will go there.B. like锛 enjoy锛 love锛 hate...
绛旓細1銆両t闄や簡浠ｆ浛浜哄拰鐗╀互澶,鍙互浣滃舰寮忎富璇.鑰岀湡姝ｇ殑涓昏(涓嶅畾寮忋佸姩鍚嶈瘝鎴栦粠鍙)鍒欐斁浜庤皳璇垨琛ㄨ涔嬪悗.濡傦細It is nor easy to finish the work in two days.鐒惰屾湁灏戞暟琛ㄨ涔嬪悗鎺ュ姩鍚嶈瘝浣滅湡姝ｇ殑涓昏.杩欎簺琛ㄨ鏄細鏃犲姪(no help)銆佹棤鐢(no use)銆佹病濂藉(no good)锛涘伐浣(hard work)銆佽垂鏃(a ...
