2024-2025學(xué)年高中英語Unit4Breakingboundaries突破語法大沖關(guān)教師用書外研版選擇性必修第二冊

PAGEUnit4Breakingboundariesit作形式主語[視察例句]1．ItisdifficultforaforeignertolearnChinese.2．It'skindofyoutohelpme.3．Itisnousetalkingtohimaboutit.4．Itisamysterytomehowitallhappened.5．Itisbelievedthatthefloodthereisthebiggestin100years.[歸納用法]it作形式主語時沒有詳細的意義，只是幫助把真正的主語移到句子后面去，使句子顯得平衡。it作形式主語時，真正的主語通常是不定式短語、-ing短語或主語從句。一、不定式短語作真正的主語，常用于下列句型中：It＋be＋形容詞＋(for/ofsb.)todosth.It＋be＋名詞＋todosth.Ittakessb.sometimetodosth.干……花了某人……時間It'suptosb.todosth.干……是某人的職責(zé)或義務(wù)Itiseveryone'sdutytoobeythelaw.遵遵守法律律是每個人的義務(wù)。Ittookthemayeartobuildthebridge.建這座橋花了他們一年的時間。Itisbadmannerstostareatpeople.盯著人看是不禮貌的。Itisuptoustohelpthoseinneed.幫助那些有困難的人是我們的責(zé)任。[名師點津]在“It＋be＋形容詞＋for/ofsb.todosth.”句型中，假如形容詞描述的是sb.，則應(yīng)用介詞of；假如描述的是todosth.就用for。It'snecessaryforustouseashort-waveradiotopickuptheprogrammes.我們用一臺短波收音機收聽這些節(jié)目是必要的。It'simportantforustolearnEnglishwell.學(xué)好英語對我們來說是重要的。Itwasfoolishofhimtogiveupthejob.(＝Hewasfoolishtogiveupthejob.)他放棄那工作是愚蠢的[即學(xué)即練1]用所給詞的適當(dāng)形式填空①Itisnotuptoyoutotell(tell)mehowtodomyjob.②Itisnotrighttouse(use)theseplacesasrubbishdumps.③Itwasniceofthemtoinvite(invite)us.二、-ing短語作真正主語的狀況遠不及不定式短語那么普遍，常限于nogood,nouse,useless,waste等詞的后面。Itisnogood/usehavingacarifyoucan'tdrive.有車假如不會開是沒有用處的。ItisawasteoftimewatchingTV.看電視是奢侈時間的。Itisnouseaskinghim.問他沒有用。[即學(xué)即練2]用所給詞的適當(dāng)形式填空①It'snogoodtaking(take)overtheexperienceofforeigncountriesuncritically.②It'snousecrying(cry)overspiltmilk.③Itisworthmaking(make)anappointmentbeforeyougo.三、用it作形式主語，主語從句作真正主語的常見句型有：1．Itisapity/ashame/afact/anhonour/goodnews/nowonder/awonder...that...Itwasapitythattheengineercouldn'tcome.惋惜工程師沒能來。Itisawonderthathecontinuestogamblewhenhealwaysloses!令人驚異的是他始終輸還始終賭。(Itis)nowonder(that)youwerelate!難怪你來晚了！Itisashamethattherainspoiledourpicnic.真惋惜，這場雨把我們的野餐給攪了。ItisafactthatEnglishisbeingacceptedasinternationallanguage.英語被認(rèn)為是國際語言，這是一個事實。2．Itis＋形容詞(如：strange/natural/surprising/obvious/true/fortunate/wonderful/funny/possible/impossible/likely/unlikely/clear/unusual/certain/important...)＋that...Itiscertainthathewillwin.他肯定會取勝。Itisimportantthatweshouldlearnfromeachotherandhelpeachother.我們應(yīng)當(dāng)相互學(xué)習(xí)，相互幫助，這是很重要的。Itwasobviousthatthechildhadbeenbadlytreated.很明顯那個孩子受過虐待。Itislikelythathewillringmetonight.他今晚可能給我打電話。Itisdoubtfulwhethershewillbeabletocome.她能否來還很難說。3．Itseems/happened/turnedout/suddenlystruckme/occurredtome...that...IthappenedthatIwasn'ttherethatday.恰好那天我不在那里。Itseemsthathisideaismorepractical.看起來他的看法更實際一些。4．It＋be＋過去分詞(如：said/reported/announced/decided/expected/hoped/known/believed...)＋that...Itishopedthatthenumberofdeerwillgreatlyincreaseverysoon.(＝Peoplehopethatthenumberofdeerwillgreatlyincreaseverysoon.)人們希望鹿的數(shù)目會很快增加。Itisreportedthatmorethantwentypeoplewerekilledinthatbusaccident.據(jù)報道在那次的公共汽車事故中有二十多人喪生。[即學(xué)即練3]用適當(dāng)?shù)拇~填空①Itisknownthatheisoneofthebestteachersinourschool.②ItsuddenlyoccurredtomethatIknewhowtosolvethatproblem.③Itisstrangethatheshouldhaveleftwithouttellingus.Ⅰ.單句語法填空1．Itisverykindofyoutogive(give)meahandintime.2．Itisstillamysterywhatcausedtheaccident.3．Itisnecessarythatone(should)master(master)theskillsofoperatingcomputer.4．ItisknowntoallthatthegunpowderwasfirstinventedbytheChinese.5．Itseemedcertainthathewillwintheprize.Ⅱ.短文語法填空I1.havestudied(study)Englishforsixyears.Itwasdifficultforme2.toremember(remember)newwordsfirst.Itriedeverymeans,butitnouse3.reciting(recite)themoverandoveragain.Itwasverykindofyou4.tooffer(offer)mesomesuggestions.Itisnecessary5.tounderstand(understand)itsmeaninginsentences.Itisnowonder6.thatyourEnglishisgood.Itisrequested7.thateveryoneshouldmasterpropermethodsoflearning.8.ItwasashamethatIhadn'tasked