【文章內(nèi)容簡(jiǎn)介】 unlikely/ clear/ unusual/ certain/ important…）that …　　如：①It is certain that he will 。　　②It is important that we should learn from each other and help each other.　　我們應(yīng)當(dāng)互相學(xué)習(xí)，互相幫助，這是很重要的?！　、跧t was obvious that the child had been badly ?！　、躀t is likely that he will ring me tonight.　他今晚可能給我打電話?！　、軮t is strange that he should have left without telling us. 真奇怪，他也沒(méi)說(shuō)一聲就走了。　?、轎t is unlikely that their group will get ahead of us. 他們小組不會(huì)趕到我們前頭去。　　◆ It seems/ happened/ turned out/ suddenly struck me/ occurred to me…that …　　如：①It happened that I wasn’t there that day. 恰好那天我不在那里。　?、贗t seems that his idea is more 。　?、跧t suddenly occurred to me that I knew how to solve that problem.　我忽然想起我知道怎樣解決那個(gè)問(wèn)題?！　　?It + be + 過(guò)去分詞（如：said/ reported/ announced/ decided/ expected/ hoped/ known/ believed…）that…如：①It is hoped that the number of deer will greatly increase very soon.(相當(dāng)于：People hope that the number of deer will greatly increase very soon)　人們希望鹿的數(shù)目將會(huì)很快增加。②It is said that nothing has been done about it. 據(jù)說(shuō)至今對(duì)此沒(méi)采取任何措施。③It is reported that more than twenty people were killed in that bus accident.據(jù)報(bào)道在那次的公共汽車事故中有二十多人喪生。④It is known that he is one of the best teachers in our 。⑤It is believed that the flood there is the biggest in 100 ?！? 注意要在It is suggested/required/desired/ordered/proposed…that…的主語(yǔ)從句中用虛擬語(yǔ)氣：　　(should) + 動(dòng)詞原形　　如：?、買t is requested that he give a performance at the ?！　　　　、贗t is suggested that we should get everything ready by ?！　、跧t is ordered that the radio be sent there at ，這臺(tái)收音機(jī)要立刻送到那里去。　　◆ It doesn’t matter +連接代詞或副詞…　　It doesn’t make too much difference　　 +連接代詞或副詞…　　如：①It doesn’t matter whether he es or 。　?、贗t won’t make much difference whether you go today or tomorrow.你今天去也好，明天去也好，關(guān)系不大?！　、?it作形式賓語(yǔ)：　　it作形式賓語(yǔ)時(shí)，可以代替三種形式：不定式、動(dòng)名詞和賓語(yǔ)從句。　　it作形式賓語(yǔ)時(shí)，需具備兩個(gè)條件：　　① 真正的賓語(yǔ)是不定式、動(dòng)名詞或從句　?、?有賓語(yǔ)補(bǔ)足語(yǔ)　具備了這兩個(gè)條件，形式賓語(yǔ)it一定要用?！　?. it代替不定式短語(yǔ)　　think/ find/ feel/ consider/ make/ regard…+ it +形容詞/名詞 + 不定式短語(yǔ)　　如：①I find it pleasant to work with him.　　(it 作形式賓語(yǔ)，代替不定式短語(yǔ)to work with him)我覺(jué)得和他一起工作很愉快?！　、赥hey felt it difficult to finish the work in such a short time.?。?it 作形式賓語(yǔ)，代替不定式短語(yǔ)to finish the work in such a short time）　　他們認(rèn)為在這么短的時(shí)間內(nèi)完成這項(xiàng)工作是困難的?！　、跾he thinks it her duty to help us.（ it 作形式賓語(yǔ)，代替不定式短語(yǔ)to help us）她覺(jué)得幫助我們是她的責(zé)任。④I think it my honor to be invited to speak here.　?。?it 作形式賓語(yǔ)，代替不定式短語(yǔ)to be invited to speak here）我覺(jué)得應(yīng)邀在這兒演講是我的榮耀?！　、軹om didn’t find it difficult to write letters in Chinese.　?。?it 作形式賓語(yǔ)，代替不定式短語(yǔ)to write letters in Chinese）湯姆發(fā)現(xiàn)用漢語(yǔ)寫信不難?！　、轆ll these noises made it impossible for me to go on with the work.　　（ it 作形式賓語(yǔ)，代替不定式短語(yǔ)to go on with the work）這些噪音使我無(wú)法繼續(xù)工作。　?、?it代替動(dòng)名詞短語(yǔ)( 這只限于少數(shù)句型，在多數(shù)情況下用不定式時(shí)更多一些)　　如：　①The professor considers it no good reading without understanding.　這位教授認(rèn)為閱讀而不理解沒(méi)有益處?！、贒o you consider it any good trying again?你覺(jué)得再試會(huì)有好處嗎？　?、跦e found it useless( no use) arguing with ?！　、蹾e thought it absolutely senseless attempting the impossible.　想做不可能的事情，他認(rèn)為是完全沒(méi)道理的。⑤I don’t think it worthwhile going to such a ?！　、?it代替賓語(yǔ)從句：如：①We all thought it a pity that the conference should have been cancelled.　會(huì)議取消了我們都感到很遺憾。②I took it for granted that they were not ing.　我想他們準(zhǔn)是不會(huì)來(lái)的了?！、跧’ll see to it that everything is ready in time.　我負(fù)責(zé)使一切都按時(shí)準(zhǔn)備好?！　、?含it 的常用句型　英語(yǔ)中有一些固定句型中含有it,應(yīng)注意這些句型的使用?！　?. It be + 被強(qiáng)調(diào)部分 + that/ who + 其他成分　　強(qiáng)調(diào)句型可以強(qiáng)調(diào)一個(gè)句子的主語(yǔ)、賓語(yǔ)、表語(yǔ)及狀語(yǔ)等成分。如果被強(qiáng)調(diào)的成分是表示人的詞，可以用that或who(whom)連接其他成分；被強(qiáng)調(diào)的成分是表示人以外的詞，例如表示事物、時(shí)間或地點(diǎn)的詞，用that連接其他成分。例如我們可以用強(qiáng)調(diào)句型強(qiáng)調(diào)下列句子的主語(yǔ)（如⑴?。①e語(yǔ)（如⑵?。?、地點(diǎn)狀語(yǔ)（如⑶　）及時(shí)間狀語(yǔ)（如⑷?。　 met Peter in Japan last year.　　⑴ It was　　 I 　　who/that met Peter in Japan last year.　?、?It was Peter 　　whom/that I met in Japan last year.　?、?It was in Japan that I met Peter last year.　?、?It was last year that I met Peter in Japan.　　* not …until 也可用于強(qiáng)調(diào)句型　　例1　Mr Brown didn’t e back until eleven o’clock.　　可變?yōu)椋篒t was not until eleven o’clock that　Mr Brown came back.　　例2 The rain didn’t stop until ：It was not until midnight that the rain stopped.　　* 強(qiáng)調(diào)句也可變?yōu)樘厥庖蓡?wèn)句　　例1　It was in 1949 that the PRC was ：When was it that the PRC was founded?　　例2 Your dad w