學(xué)必求其心得，業(yè)必貴于專精學(xué)必求其心得，業(yè)必貴于專精學(xué)必求其心得，業(yè)必貴于專精語(yǔ)法·剖析·活用條件狀語(yǔ)從句引導(dǎo)詞if，unless，as/solongas，suppose/supposingthat，onlyif，ifonly，incase，once例句Ifhedoesn’tcomebefore12o’clock,wewon’twaitforhim.如果他12點(diǎn)前不來(lái),我們就不等他了。Ishallgotomorrowunlessitrains.除非明天下雨，否則我就要走。So/Aslongasyoukeepontrying,youwillsurelysucceed.只要你繼續(xù)努力，你就會(huì)成功。Suppose/Supposing（that)Idon'thaveadayoff，whatshallwedo？假如我們沒(méi)有一天假，該怎么辦？注意事項(xiàng)1）ifonly表示條件，常用在虛擬語(yǔ)氣的句子中。Ifonlyshewerewithme。要是她和我在一起就好了！2）有時(shí)when,since等引導(dǎo)的從句也具有條件的意味,可以換成if。Whenthemoonshinesbright，hetakesawalkinthegarden。每當(dāng)月明的夜晚,他就在院子里散步。Sinceyoulikethedictionary，whydon'tyoubuyit？你既然喜歡這本字典，為什么不買(mǎi)呢?當(dāng)從句主語(yǔ)與主句主語(yǔ)一致，從句中謂語(yǔ)是be或者從句中主語(yǔ)是it,謂語(yǔ)是be的時(shí)候，可以將從句中的主語(yǔ)與be一起省略。如：Hewon’tgothereunless（heis)invited。他不會(huì)去那兒除非得到邀請(qǐng).I’llcomeearlyif(itis）possible.如果可能的話，我明天早來(lái)。讓步狀語(yǔ)從句引導(dǎo)詞though，although，as，evenif，eventhough，whatever/nomatterwhat，whenever/nomatterwhen,wherever/nomatterwhere，whoever/nomatterwho，whichever/nomatterwhich，however/nomatterhow,whether例句Ihadagoodtimealthough（though，evenif，eventhough）Ididn'tknowanybodyattheparty。盡管在這次晚會(huì)上我誰(shuí)也不認(rèn)識(shí),但我玩得很愉快.Althoughhehasalotofmoney，yet（still)heisunhappy.他雖然很有錢(qián)，但他卻不幸福.Iwon’tgotothepartyeventhoughIaminvited。即使我被邀請(qǐng)，我也不去參加晚會(huì)。Whatever（Nomatterwhat)happens，weshallneverlosehope。無(wú)論發(fā)生什么，我們都不會(huì)失去信心.Whoever（Nomatterwho）youare，youmustobeytheschoolregulations。不管你是誰(shuí)，都必須遵守校規(guī).Wherever（Nomatterwhere)yougo，Iwouldkeepyoucompany.不管你到哪里，我都會(huì)陪伴你。Whicheverbookyoulikeonmybookshelf，youmaytakeandreadit。在我的書(shū)架上，無(wú)論你喜歡哪本書(shū)，你都可以拿去讀.注意事項(xiàng)1）英語(yǔ)中不允許在though或although從句后用but。如果要強(qiáng)調(diào)前后兩個(gè)部分的對(duì)比意義，可以在主句前加上yet或still。Thoughheisyoung，yetheknowsalot.雖然他年輕，但是他知道很多.2）as引導(dǎo)讓步狀語(yǔ)從句，用倒裝語(yǔ)序。Youngasheis，heknowsalot.雖然他年輕，但是他知道很多。3)當(dāng)從句主語(yǔ)與主句主語(yǔ)一致,從句中謂語(yǔ)是be或者從句中主語(yǔ)是it,謂語(yǔ)是be的時(shí)候，可以將從句中的主語(yǔ)與be一起省略。如：Hedidn'twanttogotherethough（hewas）invited。雖然他受到過(guò)邀請(qǐng)，但是他不想去那兒.【活學(xué)活用】22。單項(xiàng)選擇1）Mr。Hallunderstandsthat_________mathshasalwaysbeeneasyforhim，itisnoteasyforthestudents。A。unlessB。sinceC.althoughD。when2）Don'tbeafraidofaskingforhelp_________itisneeded.A。unless B.since C。although D.when3）Agoodstorytellermustbeabletoholdhislisteners'curiosity_________hereachestheend.A。when B.unless C。after D.until4）—Howfarapartdotheylive?-_________Iknow,theyliveinthesameneighborhood。A。Aslongas B。Asfaras C.Aswellas D。Asoftenas5）Hemadeamistake,butthenhecorrectedthesituation_________itgotworse。A.until B.when C。before D.as6)_________Iknowthemoneyissafe，Ishallnotworryaboutit.A。Eventhough B。Unless C.Aslongas D。While7）—Dad，I’vefinishedmyassignment。—Good，and_________youplayorwatchTV，youmustn’tdisturbme。A.whenever B。whether C。whatever D。nomatter8)Wewereswimminginthelake_________suddenlythestormstarted.A。when B。while C。until D。before9)_________youthinkhard,youwillhaveanotherpossiblewaytokeepawayfromthedanger。A.Asfaras B.If C.Justas D.Evenif10）_________，Ihavetoputitawayandfocusmyattentiononstudythisweek.A。Howeverthestoryisamusing B。NomatteramusingthestoryisC。Howeveramusingthestoryis D.Nomatterhowthestoryisamusing答案與解析：1)CMr。Hall懂得盡管數(shù)學(xué)對(duì)他來(lái)說(shuō)向來(lái)容易，但對(duì)學(xué)生來(lái)說(shuō)并不容易。2）D當(dāng)需要幫助的時(shí)候，不要害怕向人求助。3)D句意為一個(gè)優(yōu)秀的故事講述者必須能夠讓聽(tīng)者的好奇心一直維持到他講到故事的結(jié)尾處。4）BAsfarasIknow“據(jù)我所知”,是固定搭配。5）C他犯了一個(gè)錯(cuò)誤，但沒(méi)等形勢(shì)惡化，他就扭轉(zhuǎn)了局面。6）C只要我知道這筆錢(qián)是安全的話，我就不會(huì)為它擔(dān)憂。aslon