【正文】 conference is to take 。(HM)It doesn’t matter what he 。 follows that…句式。如： It looks as if we’ll be 。it用作形式主語(yǔ)特殊句式小歸納it用作形式主語(yǔ)有不少非常有用的句式，比如以下一些就值得注意： seems(appears)that…句式。It is It was very quiet in the 。It would be ideal if you could join ，則太好了。(3)在情景中確認(rèn)某人或事物Who is it? It’s ？(問敲門人)是我呀。(1)替代剛提到過的同一事物This is our new bought it 。這時(shí)它可以指提到過的，也可以指未提到過的，在句中作主語(yǔ)或賓語(yǔ)。The baby cried when it was 。When the factory closes, it will mean 500 workers will be out of , 那就意味著要有500工人失業(yè)。It’s about 50 kilometers from here to my 。That steak was really it!那牛排真是不錯(cuò)！We’ve been looking for a house for months and I think this is , 我看這所就是我們要找的。但是，英語(yǔ)一般不說(shuō)it looks that…，可改用it looks as if…。It didn’t occur to him that she would refuse his 。哪些從句作主語(yǔ)時(shí)可用it作形式主語(yǔ)原則上說(shuō)，it用作形式主語(yǔ)可以代替下列從句： It is quite clear that he has read the ，他讀過這本書。It struck her how gentle he was 。It was clear why he had asked for a 。如： It is no good 。It has been a great honour your ing to visit 。It’s so nice sitting here with 。如：It’s worth while doing the 。What’s it like being married? 結(jié)婚是什么味道。 is said/ reported/ believed/ understood that… It is said that he has joined the 。 makes no/mush difference…It’s doesn’t make much difference my being 。1)用在句型: “It seems that …”中.“看起來(lái)像。此類句型常以could, would開頭或what about /how about 的句中。Everything is ，形容詞或else須放在復(fù)合不定代詞后。作主語(yǔ)This is the way to do 。There is no fear of 。例如：This is a pen and that’s an ，那是塊橡皮擦。指示代詞具有名詞和形容詞性質(zhì)，既可指人也可指物。（this 等于 this wallet)Is she going to marry that man? 她打算跟那人結(jié)婚嗎？（that man不得用that代替，否則有輕蔑之意）相當(dāng)于名詞的指示代詞在句中作主語(yǔ)時(shí)，則指物指人均可。你是誰(shuí)？This is ?！弊⒁馐马?xiàng)指示代詞在作主語(yǔ)時(shí)可指物也可指人，但作其他句子成分時(shí)只能指物，不能指人，例如：(對(duì))That is my 。(對(duì))He admired those who looked 。但指事物時(shí)，只能用it或者they。例如：Is this a ruler? Yes, it those your friends? No, they aren’、為避免重復(fù)，有時(shí)可用 that 或 those 來(lái)代替前面已提到過的人或事物；用 this 或 these 來(lái)代替下文中將要提過的人或事物。介紹兩個(gè)人時(shí)，先用“ This is ….”介紹一個(gè)人，然后用“ That is ….”介紹另一個(gè)人。one，that 和it的區(qū)別：one表示泛指，that和it 表示特指。我想我該去買一頂。 t know where I put it.(同一物)我找不到我的帽子。一、用于指人以外的一切生物、無(wú)生命的東西和事情。s Lucy39。s grown in the southeast of China．什么地方種植茶？中國(guó)東南部種植茶。t it？看這雨！雨很大，對(duì)嗎？3．代替上文提到過的整個(gè)事情。這太危險(xiǎn)了！It was hard work，but they really enjoyed it．摘蘋果是艱苦活，可他們都樂意去干（它）。（根據(jù)上下句，“it was”也可不譯出來(lái)。如：—Is it your sister，Kate？（那舊照片上的 baby）是你姐姐凱特吧？—No！不是。3．指代性別不詳?shù)膵胗變夯蛟诓挥?jì)較性別時(shí)，也可用it來(lái)指人。注意：看到這樣的句子（或聽到這樣的話）時(shí)，要想一想，不要一看到it就把它譯成“它”。re right．It39。如：—What time is it？幾點(diǎn)鐘？—It39。特別注意it用于表示時(shí)間時(shí)還常見于以下兩個(gè)句型中：（1）It39。s time for supper／to have supper．是吃晚飯的時(shí)候了。譯為“自從……以來(lái)已過了……（時(shí)間）”。s three years since he came here．＝It has been three years since he came here．＝He has been here for three years．他到這里已經(jīng)三年了。s walk from my home to the school．從我家到學(xué)校步行得花半小時(shí)時(shí)間。3．表示自然現(xiàn)象。英語(yǔ)中常常見到某個(gè)句子以it開頭，it與其后面的動(dòng)詞不定式短語(yǔ)、動(dòng)名詞短語(yǔ)、名詞性從句等相呼應(yīng)，以表達(dá)一個(gè)完整的意義。如：It is interesting to play with snow in winter． 冬季里玩雪是很有趣的。s very kind of you to say so．你這樣說(shuō)真是太好了。It must be great fun to fly to the moon in a spaceship．乘宇宙飛船飛往月球一定很有趣。s bad playing in the street．在街上玩是沒好處的。s true that he may fall behind the other students．他真的可能落后于其他同學(xué)。如：It39。6．It ＋cost／costs ＋sb．＋some money ＋to do sth．譯為“某人花多少錢做某事”。如：It seems that he is ill．＝He seems to be ill．看起來(lái)他好像病了。該句型中賓語(yǔ)補(bǔ)足語(yǔ)可由形容詞、名詞等充如： He found it not easy to learn a foreign language well．他發(fā)現(xiàn)學(xué)好一門外語(yǔ)是不容易的。t ________that all those who get good grades in the entrance examination will prove to be most as granted this for granted that for granted it for granted。that 。s （高考，1980)（2)Is＿necessary to tell his father everything? (MET1987)(3)Is＿possible to fly to the moon in a spaceship? (4)I consider____ my duty to help you． (5).It was at four o39。t they it 39。t we have a little break?Didn3