新教材高中英語(yǔ)人教版選擇性學(xué)案UNIT2SectionⅢUsingLanguage

SectionⅢUsingLanguageⅠ.重點(diǎn)單詞1．a(chǎn)rtificialadj.人工的；人造的；假的2．clonevt.克隆；以無(wú)性繁殖技術(shù)復(fù)制n．克隆動(dòng)物(或植物)3．predictvt.預(yù)測(cè)；預(yù)言；預(yù)料→predictionn．預(yù)測(cè)；預(yù)言→predictableadj.可預(yù)見(jiàn)的；可預(yù)料的；意料之中的；老套乏味的4．forecastvt.&n．預(yù)測(cè)；預(yù)報(bào)→forecaster5．occupationn．職業(yè)；占領(lǐng)→occupyvt.侵占，占據(jù)6．opposevt.反對(duì)；抵制；阻撓→opposedadj.強(qiáng)烈反對(duì)；截然不同的7．henceadv.因此；由此8．ceasevi.&vt9．deceasedadj.已死的；亡故的10．a(chǎn)bsencen．不存在；缺乏；缺席→absentadj.缺席的，不在場(chǎng)的11．ruraladj.鄉(xiāng)村的；農(nóng)村的→urbanadj.城市的；都市的12．a(chǎn)dvocatevt.提倡；支持；擁護(hù)n．提倡者；支持者；擁護(hù)者→advocationn．擁護(hù)，支持13．emphasisn．強(qiáng)調(diào)；重視；重要性14．luxuryn．奢華15．careern．職業(yè)；事業(yè)16．prospectn．可能性；前景→prospectiveadj.有望的；可能的；預(yù)期的；潛在的；即將發(fā)生的；即將來(lái)臨的17．resistvi.&vt.抵制；反抗；抵擋→resistancen．抵制；反對(duì)；抗拒→resistantadj.有抵抗力的18．paragraphn．段；段落19．signpostn．路標(biāo)20．essayn．文章21．a(chǎn)ccurateadj.精確的；準(zhǔn)確的→accuracyn．準(zhǔn)確(性)；精確(程度)22．librariann．圖書(shū)管理員；圖書(shū)館館長(zhǎng)→libraryn．圖書(shū)館23．Christiann．基督教徒adj.基督教的Ⅱ.重點(diǎn)短語(yǔ)1．inparticular尤其，特別2．a(chǎn)rtificialintelligence人工智能3．ontheonehand...ontheotherhand一方面……，另一方面……4．providesb.withsth.提供某人某物5．ratherthan而不是6．keepintouch(with...)(與……)保持聯(lián)系；了解(某課題或領(lǐng)域的情況)7．evenif即使，盡管8．theAmish阿曼門(mén)諾派9．placeemphasison把重點(diǎn)放在10．cutdown削減11．inplaceof代替12．bemadefrom由……制成Ⅲ.重點(diǎn)句型1．ProbablythemostwellknownaretheAmish,agroupofChristianslivinginruralAmerica.最著名的可能是阿米什人，一群生活在美國(guó)農(nóng)村的基督教徒。2．Moreover,theInternethasmade_it_possibleforfriendsandfamilyto_keepintoucheasilyeven_iftheyareonoppositesidesoftheworld.此外，互聯(lián)網(wǎng)使朋友和家人即使在世界的另一邊也能很容易地保持聯(lián)系成為可能。3．Ofcourse,whennewtechnologychangesthe_way_we_live,_itcanbeascaryprospect.當(dāng)然，當(dāng)新技術(shù)改變我們的生活方式時(shí)，這可能是一個(gè)可怕的前景。4．Icouldn'tagreemore.我完全同意。5．Asyoucanimagine，theskiesoverthecitygetprettybusy!正如你可以想象的，城市的天空變得非常繁忙！1eq\a\vs4\al(predictvt.預(yù)言，預(yù)測(cè)；預(yù)料)[典型例句]NewspaperspredictedthatDaviswouldbere－elected.報(bào)紙預(yù)言戴維斯將會(huì)再次當(dāng)選。Itisdifficulttopredictwhatthelong-termeffectsoftheaccidentwillbe.很難預(yù)測(cè)事故的長(zhǎng)期影響是什么。[思維拓展](1)predictionn.預(yù)言；預(yù)測(cè)；預(yù)示predictableadj.可預(yù)言的；可預(yù)測(cè)的；可預(yù)示的predictorn.測(cè)位器；預(yù)言家(2)前綴pre-表示“在……之前，預(yù)先”。precautionn．預(yù)防；預(yù)防措施prepayv．預(yù)付previewn．&vt.預(yù)習(xí)；預(yù)演prereadvt.預(yù)讀[即時(shí)訓(xùn)練]Expertsarepredicting(prediction)thatunemploymentinthiscountrywillfallslowlynextyear.2eq\a\vs4\al(forecastn.&vt.預(yù)測(cè)；預(yù)報(bào))[典型例句]Theforecastsaidtherewouldbesunnyintervalsandshowers.預(yù)報(bào)間晴，有陣雨。Temperatureswereforecasttoreach40℃預(yù)報(bào)氣溫將達(dá)40℃[即時(shí)訓(xùn)練]Itishardto_forecast(forecast)．You'dbetterpraytheGodtoblessyou.3eq\a\vs4\al(occupationn.職業(yè)；占領(lǐng))[典型例句](1)[C]工作；職業(yè)Pleasestateyourname,ageandoccupationbelow.請(qǐng)?jiān)谙旅鎸?xiě)明姓名、年齡和職業(yè)。(2)[C]消遣；業(yè)余活動(dòng)Hermainoccupationseemstobeshopping.逛商店購(gòu)物似乎是她的主要消遣。(3)[U]侵占；占領(lǐng)；占領(lǐng)期Theareasunderoccupationcontainedmajorindustrialareas.被占領(lǐng)地區(qū)擁有主要的工業(yè)區(qū)。(4)[U](formal)(土地、房屋、建筑等的)使用，居住，占用TheofficeswillbereadyforoccupationinJune.辦公室將于六月交付使用。[思維拓展]occupyvt.占據(jù)；占有；占領(lǐng)occupyoneselfwithsth./indoingsth.忙于occupiedadj.使用中；忙碌的beoccupiedwithsth./indoingsth.忙于；全神貫注于；從事[即時(shí)訓(xùn)練]Lisais_occupied(occupy)withherenterprisedayinanddayoutandtherefore,shehasbeenpraised.4eq\a\vs4\al(opposevt.反對(duì)；抵制；阻撓)[典型例句]Mymotheropposedthenewplan.我媽媽反對(duì)這個(gè)新計(jì)劃。Ioppose/amopposedtodrunkdriving.我反對(duì)酒后駕車。[思維拓展]eq\b\lc\\rc\(\a\vs4\al\co1(opposesth./doingsth./sb.'sdoingsth.,反對(duì)某人做某事強(qiáng)調(diào)動(dòng)作,opposesth.to/againststh.使……與……對(duì)立/對(duì)抗))oppositeadj.對(duì)面的，另一邊的；相反的，對(duì)立的opposedadj.反對(duì)的，對(duì)立的beopposedtosth.反對(duì)某事[誤區(qū)警示](1)oppose后若接動(dòng)詞，則用其動(dòng)名詞形式，而不用動(dòng)詞不定式；(2)beopposedto表示“反對(duì)”時(shí)相當(dāng)于beagainst；表示“與……相對(duì)”時(shí)相當(dāng)于beoppositeto；(3)表示支持的詞(組)：favour，infavourof，befor，agreewith，support；表示反對(duì)的詞(組)：disagreewith，beagainst，oppose。[即時(shí)訓(xùn)練]Manycitizenswereopposed(oppose)tocuttingdownthe100-year-oldtree.5eq\a\vs4\al(ceasevi.&vt.使停止；終止)[典型例句]Welfarepaymentsceaseassoonasanindividualstartsajob.一旦就業(yè)，即停發(fā)福利救濟(jì)。[思維拓展]ceasetodosth.停下來(lái)去做cease(doing)sth.停止(做)某事wonderswillnevercease(表示驚喜)真是無(wú)奇不有，怪事何其多cessationn．停止；終止；中斷；暫停cessationofbusiness暫停營(yíng)業(yè)[即時(shí)訓(xùn)練]Thepanyceasedtrading(trade)inJune.6eq\a\vs4\al(absencen.不存在；缺乏；缺席)[典型例句]Whatwastherealreasonforyourabsence?你缺席的真正原因是什么？Pleaselookaftermyhouseduringmyabsence.我不在時(shí)，請(qǐng)幫我照看房子。[思維拓展]absencefromclasses缺課inone'sabsence在某人不在的時(shí)候absenceofmind心不在焉intheabsenceof...不在時(shí)absentadj.缺席的；不在的beabsentfrom缺席；缺少；不存在absentlyadv.心不在焉地[即時(shí)訓(xùn)練]Hehasbeenabsent(absence)fromofficeforthreeweeks.We'dbetterfindanotherpersontotakehisplace.eq\o(\s\up1(7),\s\do5())eq\a\vs4\al(advocatevt.提倡；支持；擁護(hù)n.提倡者，支持者；擁護(hù)者)[典型例句](1)vt.擁護(hù)，支持，提倡，主張Idon'tadvocatebuildingafactoryaroundourschool.我不支持在我們學(xué)校周邊建立工廠。(2)n.[C]擁護(hù)者，提倡者Heisanadvocatefor/ofhospitalworkers.他是醫(yī)院工作人員的支持者。[思維拓展]advocate(doing)sth.提倡(做)某事advocate＋that-clause提倡/主張……(從句謂語(yǔ)用shoulddo，should可省略)anadvocatefor/of……的支持者/擁護(hù)者[即時(shí)訓(xùn)練]Manyexpertsadvocatepraising(praise)thechildrenfortheirgoodbehaviour.8eq\a\vs4\al(resistvi.&vt.抵制；反抗；抵擋)[典型例句]Icouldn'tresisthavingalookatherdiary.我忍不住看了一眼她的日記。[思維拓展](1)behard/impossibletoresist難以拒絕resistsb./sth.抵抗/抵制某人/某物can't/couldn'tresistdoingsth.禁不住干某事resistdoingsth.抑制干某事(2)resistantadj.抵抗的；有抵抗力的beresistantto對(duì)……有抵抗力(3)resistancen．抗拒；反對(duì)Iwasintheirpower,andknewitwaspointlesstoresist.我在他們股掌之中，知道抵抗毫無(wú)意義。Therehasbeenalotofresistancetothisnewlaw.這項(xiàng)新的法規(guī)已經(jīng)遇到很多的抵制。[易混辨析]can'tresistdoingsth.,can'thelpdoingsth.,can'thelpdosth.can'tresistdoing...無(wú)法抗拒……的誘惑，忍不住干……；can'thelpdoing情不自禁地做……；can'thelpdosth.不能幫忙做……Allthestudentssurroundingmecrying,Ican'thelpcrying.我周圍的學(xué)生都在哭，我情不自禁地哭了。[即時(shí)訓(xùn)練]Thebankstronglyresistedcutting(cut)interestrates.考點(diǎn)集訓(xùn)一Ⅰ.單詞拼寫(xiě)1．What'sonfollowingthenewsandweatherforecast(預(yù)報(bào))?DoyouhaveaTVguide?2．Thecityisdottedwithsmalllakes,naturalandartificial(人工的)．3．Heorderedhismentocease(停止)fire.4．Theyaredeterminedtoresist(抵制)pressuretochangethelaw.5．Theideaofcloning(克隆)extinctlifeformsstillbelongstosciencefiction.6．IsupposeIwaslookingforanoccupation(職業(yè))whichwasgoingtobeanadventure.7．Sheremainedbitterlyopposed(反對(duì))totheideaofmovingabroad.8．Hence(因此),weshouldtravelwithourparents.9．Theemphasis(重要性)isverymuchonlearningthespokenlanguage.10．Thereisnoimmediateprospect(可能性)ofpeace.Ⅱ.單句語(yǔ)法填空1．Hecouldn'tresistshowing(show)offhisnewcar.2．Youneverceaseto_amaze(amaze)me!3．Elderlypeoplearenotalwaysresistant(resist)tochange.4．Theycametoconclusionsdiametricallyopposedtoours.5．Theyquestionedtheaccuracy(accurate)oftheinformationinthefile.1eq\a\vs4\al(inparticular尤其，特別)[典型例句]Drewmadesomeremarkstonobodyinparticularandsaidgoodbye.德魯說(shuō)了一些不針對(duì)任何人的話就告辭了。Whyshouldhenoticehercarinparticular?他為什么會(huì)特別注意到她的車？[思維拓展]inparticular＝particularly尤其；特別；格外beparticularabout/oversth.對(duì)……講究/挑剔[即時(shí)訓(xùn)練]①ThesituationinEthiopiainparticularisworrying.②Trafficisbad,particularly(particular)inthecitycentre.eq\o(\s\up1(2),\s\do5())ontheonehand...ontheotherhand一方面……，另一方面……[典型例句]ThiswillcertainlybringsomenewdevelopmentopportunitiesforChinaeconomyontheonehand,butontheotherhandtheyarealsofullofchallengesespeciallyfortheportindustries.這為中國(guó)經(jīng)濟(jì)的發(fā)展帶來(lái)了新的機(jī)遇，但對(duì)港口企業(yè)來(lái)說(shuō)也必然受到?jīng)_擊。[思維拓展](1)ontheonehand...ontheotherhand一方面……，另一方面……(表示相矛盾的兩個(gè)方面)foronething...foranother...首先……，其次……；一則……，二則……(2)ontheonehand中的the可以省略，而ontheotherhand中的the不能省略。另外，ontheotherhand可以單獨(dú)使用。[即時(shí)訓(xùn)練]On_the_one_hand,_thetestcanenhancetheexaminees'consciousnessofhealth,buton_the_other_hand,_itismorelikelythatitwillresultinover-anxiety.一方面，這個(gè)測(cè)試會(huì)增強(qiáng)測(cè)試者的健康意識(shí)，但另一方面，它更有可能引起過(guò)度焦慮。3eq\a\vs4\al(providesb.withsth.為某人提供某物)[典型例句]Thepeasantsprovideuswithgrainandvegetables.＝Thepeasantsprovidegrainandvegetablesforus.農(nóng)民供給我們糧食和蔬菜。[思維拓展]eq\b\lc\\rc\}(\a\vs4\al\co1(offersb.sth.,offersth.tosb.))主動(dòng)給某人提供某物eq\b\lc\\rc\}(\a\vs4\al\co1(supplysth.tosb.,supplysb.withsth.))給某人供應(yīng)某物[即時(shí)訓(xùn)練]Ourschoollibrarycanprovideallkindsofgoodbooksforthestudents.4eq\a\vs4\al(ratherthan與其；不愿；而不是)[典型例句]Ratherthangoingstraightontouniversity,whynotgetsomeworkexperiencefirst?與其直接上大學(xué)，為什么不先取得一點(diǎn)工作經(jīng)驗(yàn)?zāi)?？Brysondecidedtoquitratherthanacceptthenewrules.布賴森決定辭職，而不是接受新的規(guī)定。Ithinkyou'dcallitalectureratherthanatalk.我說(shuō)啊，這是訓(xùn)斥，而不是談話。[思維拓展]otherthan除了orrather更確切地說(shuō)eq\b\lc\\rc\}(\a\vs4\al\co1(woulddo...ratherthando...,wouldratherdo...thando...,prefertodo...ratherthando...))eq\o(\s\up15(寧愿做……),\s\do15(而不愿做……))[方法規(guī)律]ratherthan作連詞用，連接兩個(gè)并列成分；連接主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞的數(shù)與其前面的成分保持一致。He,ratherthanyou,isondutytoday.是他而不是你今天值日。[即時(shí)訓(xùn)練]Ratherthanride(ride)onacrowdedbus,healwaysprefersto_ride(ride)abicycle.eq\o(\s\up1(5),\s\do5())keepintouch(with...)(與……)保持聯(lián)系；了解(某課題或領(lǐng)域的情況)[典型例句]We'reatightgroup,sowedokeepintouch.我們關(guān)系很鐵，所以的確保持著聯(lián)系。Remembertokeepintouchwithhimwhenyougoabroad.你出國(guó)時(shí)要和他保持聯(lián)系。[思維拓展]getintouchwith與……取得聯(lián)系losetouchwith與……失去聯(lián)系[即時(shí)訓(xùn)練]Icankeepintouchwithfriendsandfamilybyusingemail.6eq\a\vs4\al(cutdown削減；刪節(jié)；砍倒)[典型例句]Thedoctortoldhimtocutdownonhisdrinking.醫(yī)生勸他少喝酒。Cutdownonfattyfoodifyouwanttoloseweight.如果想減肥的話就得少吃高脂食物。Youshouldcutdownwhatyouwroteinyourpaper.你應(yīng)該把你的論文內(nèi)容刪減一下。Heusedtocutdowntreesbutheplantstreesnow.他過(guò)去砍樹(shù)，而現(xiàn)在植樹(shù)。[思維拓展]cutaway切下；砍掉cutoff中止；切斷cutacross走捷徑cutout刪除；遮擋cutback削減；縮減cutshort縮短；打斷cutin超車；插嘴cutup切碎；抨擊[圖解助記](méi)圖解cutoff,cutup,cutdown[即時(shí)訓(xùn)練]①Hewascutofffromallhisfriendswhenhestudiedabroad.②Youcancutouttheunimportantdetails.③Inordernottobelate,shecutacrossthefield.④Cutupthecarrotsbeforeyouputthemintothepot.考點(diǎn)集訓(xùn)二1．Hisstatementreferstopeopleingeneral,nottoanyoneinparticular.2．Remembertokeepintouchwithmewhenyougetthere.3．Weareheretoprovideaserviceforthepublic.4．Theyaimatqualityratherthanquantity.5．Hecutdownoncoffeeandcigarettes,andateabalanceddiet.eq\o(\s\up1(1),\s\do5())ProbablythemostwellknownaretheAmish，agroupofChristianslivinginruralAmerica.最著名的可能是阿米什人，一群生活在美國(guó)農(nóng)村的基督教徒。[句式分析]agroupofChristians作前面theAmish的同位語(yǔ)；livinginruralAmerica是現(xiàn)在分詞短語(yǔ)作后置定語(yǔ)，修飾前面的名詞Christians并與之構(gòu)成邏輯上的主謂關(guān)系。[思維拓展]現(xiàn)在分詞和過(guò)去分詞都可用作定語(yǔ)，它們的區(qū)別有兩點(diǎn)：①現(xiàn)在分詞表示分詞與所修飾的名詞或代詞之間存在主謂關(guān)系，過(guò)去分詞表示分詞與所修飾的名詞或代詞之間存在動(dòng)賓關(guān)系。IlikebookswrittenbyZhangAiling.我喜歡張愛(ài)玲寫(xiě)的書(shū)。(write與books之間為動(dòng)賓關(guān)系)Doyouknowthewomanwearingapairofglasses?你認(rèn)識(shí)那個(gè)戴眼鏡的婦女嗎？(thewoman與wear之間為主謂關(guān)系)②現(xiàn)在分詞意為“令人……的”，表示被修飾的人或物給別人的感受；過(guò)去分詞意為“……的”，強(qiáng)調(diào)被修飾的人自身的感受。We'resurprisedattheastonishingnews.這條令人震驚的消息使我們大吃一驚。(表示消息令人震驚)Didyounoticethepuzzledexpressiononhisface?你注意到他臉上困惑的表情了嗎？(表示他很困惑)[即時(shí)訓(xùn)練]Alittlechildlearning(learn)towalkoftenfalls.eq\o(\s\up1(2),\s\do5())Moreover，theInternethasmadeitpossibleforfriendsandfamilytokeepintoucheasilyeveniftheyareonoppositesidesoftheworld.此外，互聯(lián)網(wǎng)使朋友和家人即使在世界的另一邊也能很容易地保持聯(lián)系成為可能。[句式分析](1)本句是復(fù)合句，主句中使用了句型make＋it＋adj./n.＋forsb.todo，其中it是形式賓語(yǔ)，真正的賓語(yǔ)是后面的不定式。(2)evenif引導(dǎo)了讓步狀語(yǔ)從句。evenif相當(dāng)于eventhough，意為“即使；盡管”。evenif/though引導(dǎo)的讓步狀語(yǔ)從句可用現(xiàn)在時(shí)代替將來(lái)時(shí)。Evenifyoutakeataxi,youwillstillmissthetrain.即使你乘出租車也趕不上這班火車了。Evenifwecouldaffordit,wewouldn'tgoabroadforourvacation.即使我們付得起這筆錢，也不出國(guó)度假。[思維拓展]“動(dòng)詞＋it＋賓補(bǔ)＋真正的賓語(yǔ)”(即“6123結(jié)構(gòu)”)小結(jié)：①6指常用的動(dòng)詞：think，believe，make，find，consider，feel②1指形式賓語(yǔ)it③2指賓補(bǔ)的兩種形式：形容詞和名詞④3指真正的賓語(yǔ)的三種形式：不定式、動(dòng)名詞、從句ImustmakeitclearthatI'llalwayssupportyou.我必須說(shuō)清楚，我會(huì)一直支持你的。HefounditimpossibletocontinueworkinginGermany.他發(fā)現(xiàn)不可能繼續(xù)在德國(guó)工作了。Doyouconsideritanygoodtryingagain?你認(rèn)為再試一次有用嗎？[即時(shí)訓(xùn)練]①Somescientistsbelievethatstemcellswillmakeitpossibletotreatseriousdiseases.②Evenifinvited(invite),Iwon'tgotoherbirthdayparty.eq\o(\s\up1(3),\s\do5())(Ofcourse，whennewtechnologychangesthewaywelive，itcanbeascaryprospect.當(dāng)然，當(dāng)新技術(shù)改變我們的生活方式時(shí)，這可能是一個(gè)可怕的前景。[句式分析]本句是一個(gè)復(fù)合句，when引導(dǎo)時(shí)間狀語(yǔ)從句；該時(shí)間狀語(yǔ)從句中theway(方式)后接定語(yǔ)從句welive，引導(dǎo)詞that/inwhich在從句中作方式狀語(yǔ)，已經(jīng)省去。[思維拓展]way(方式，方法)后定語(yǔ)的常見(jiàn)形式：eq\b\lc\{\rc\(\a\vs4\al\co1(①ofdoingsth.,②從句，從句引導(dǎo)詞,③todosth.))eq\b\lc\{\rc\(\a\vs4\al\co1(在從句中作主語(yǔ)時(shí)：which/that,在從句中作賓語(yǔ)時(shí)：which/that，可省略,在從句中作狀語(yǔ)時(shí)：that/inwhich，可省略))Therearemanywaysoflearningalanguage.學(xué)習(xí)一種語(yǔ)言的方法有很多種。Thewayhethoughtoftogetthetaskdoneisnotpractical.他想出的完成該任務(wù)的這一方法不實(shí)用。Theway(which/that)youtoldmelastSundayworkedwell.上周日你告訴我的那個(gè)方法很管用。Theway(that/inwhich)youtreatyourchildrenisnotwise.你對(duì)待孩子的方法不明智。[即時(shí)訓(xùn)練]Iwatchedthewaythatherarmsandlegsmovedandthefunnymovementsmademelaugh.eq\o(\s\up1(4),\s\do5())eq\a\vs4\al(Icouldn'tagreemore.,我完全同意。)[句式分析]此句是用比較級(jí)表示最高級(jí)含義，其結(jié)構(gòu)是“表示完全否定意義的詞＋比較級(jí)”。Ihaveneverseenabetterfilm.我沒(méi)看過(guò)比這部更好的電影。[思維拓展]比較級(jí)表示最高級(jí)意義的常用結(jié)構(gòu)：(1)比較級(jí)＋than＋eq\b\lc\{\rc\(\a\vs4\al\co1(alltheother＋名詞復(fù)數(shù),theother＋名詞復(fù)數(shù),anyother＋名詞單數(shù),anyoftheother＋名詞復(fù)數(shù),anything/anyoneelse))(2)表示否定意義的詞＋形容詞/副詞的比較級(jí)(＋than)Tomismoreintelligentthananyotherstudent/alltheotherstudentsinhisclass.湯姆是他班上最聰明的學(xué)生。LiYangstudiesharderthananyoneelseinhisclass.李洋在班里學(xué)習(xí)最努力。Nothingiseasierthanthis.這是最容易的事。Thereisnothingbetter.再好不過(guò)了。[即時(shí)訓(xùn)練]Ihaveneverheardabetter(good)voice.eq\o(\s\up1(5),\s\do5())eq\a\vs4\al(Asyoucanimagine，theskiesoverthecitygetprettybusy！,正如你可以想象的，城市的天空變得非常繁忙！)[句式分析]句中As引導(dǎo)非限制性定語(yǔ)從句，指代后面的整個(gè)句子。as在非限制性定語(yǔ)從句中作主語(yǔ)、表語(yǔ)或賓語(yǔ)，且引出的從句位置比較靈活，可位于句首或句末，也可置于主句中間。通常均由逗號(hào)將其與主句隔開(kāi)。as有“正如……，就像……”之意。但通常用于像asweallknow,asisknowntoall,asissaidabove,asisalwaysmentionedabove,asisusual,asisoftenthecase,asisreportedinthenewspaper等句式中。AsisknowntotheUnitedStates,MarkTwainisagreatAmericanwriter.美國(guó)人都知道，馬克·吐溫是一位偉大的美國(guó)作家。(as在從句中作主語(yǔ))Asyouknow,hewrotealotoffairytales.你是知道的，他寫(xiě)了許多神話故事。(as在從句中作賓語(yǔ))Heisabsorbedinwork,asisoftenthecase.他正在全神貫注地工作，這是常見(jiàn)的情況。(as在從句中作表語(yǔ))[易混辨析]as/which引導(dǎo)非限制性定語(yǔ)從句的區(qū)別關(guān)系詞意義先行詞從句位置從句功能as正如整個(gè)主句比較靈活補(bǔ)充說(shuō)明which這/那主句、個(gè)別詞或短語(yǔ)位于先行詞后補(bǔ)充說(shuō)明；先行詞為整個(gè)主句時(shí)，從