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地点状语从句•引导词：where，wherever•I’llgowhereverhegoes.•I’llgowherehewent.•---Canyoutellme____youarefrom?•---Itisnotimportant_____Icamefrom.•A.when;wheneverB.where;whereverC.theplace;whereD.wherever;where我要去他去的地方.他去哪我就去哪.•WhereIlivethereareplentyoftrees.•我住的地方树很多。•WhereverIamIwillbethinkingofyou.•不管我在哪里我都会想到你。辨析:Gobackwhereyoucomefrom.Gobacktothevillagewhereyoucamefrom.（状语从句）（定语从句）where引导的是地点状语从句还是定语从句?从哪儿来回哪儿去回到你来的村庄去•*地点状语从句和定语从句的区别：简单来说，地点状语从句没有先行词，而定语从句有先行词。•E.g.①TheWinterOlympicGamesarealwaysheldwherethereisplentyofsnow.•②TheWinterOlympicGamesarealwaysheldinthecountrieswherethereisplentyofsnow.(地点状语从句)(定语从句)1.---Wheredoyouplantowork?---I’vemadeupmymindtogo_____I’mmostneeded.A.totheplaceB.towhichC.thatD.where2.Iwillgotoacountryforaholiday____therearealotofflowersandtrees.A.intheplaceB.whereC.whichD.wherever1）because语势最强，用来说明人所不知的原因，回答why提出的问题。可和only,just,not连用.Ididn'tgo,becauseIwasafraid.Hedidn’tgotoworkjustbecausehislegwasbroken.三：原因状语从句2）as:由于。引导的原因状语从句多放在主句前,表示明显的原因,语气较弱,不能回答的why的问句.Asheisfromthesouth,heisnotusedtothedryweatherinBeijing.Astheweatherissobad,wehavetodelayourjourney.3）Since：既然。引导的原因状语从句一般放在主句前,表示对方已经知道的事实或理由,语气较弱,不能回答的why的问句.Sinceyouarenotinterested,Iwon'ttellyouaboutit.Sincenooneisagainstit,we'llpassit.4）for：因为。也可表示原因,但它是并列连词,放在两并列句之间,表示非直接地随便附加说明的理由或推断的理由,常用逗号跟主句分开.Itisspringnow,fortheflowersareout.Hemustbeill,forheisabsenttoday.Itmustbemorning,forthebirdsaresinging.*because,sinceas和for的用法区别常用的表示原因的连接词见下表，按照语气由强到弱的顺序排列意义词性位置because因为强调未知原因从属连词可前置或后置since既然表示已知的、显然的理从属连词常前置as由于从属连词可前置或后置for因为解释、说明，常用于推断并列连词常后置1.在语气上，because最强，since次之，as较弱，for最弱。2.在意义上，because表示因为，since表示既然，as表示由于。而for表示的原因实际上是对前面分句加以解释，说明推断的理由。3.在词性上，because，since，as都是从属连词，引导从句；而for是并列连词，连接并列分句，故for不能置句首。E.g.①HedistrustedmebecauseIwasnew.②Sinceyouaregoing,Iwillgo,too.③Asit'sraining,you'dbettertakeataxi.④Itmusthaverainedlastnight,forthegroundiswet.4.Because等词引导原因状语从句时，主句前不再使用so*什么情况下只能用because1.在回答由why提出的疑问句E.g.Whyaren'tyoucomingwithustotheconcert?BecauseIhavegotabadheadache.2.在强调句中E.g.ItwasbecauseIwantedtobeclosertonaturethatImovedtothecountryside.3.在only，simple，just等强调词后E.g.TheythinktheyaresosuperiorjustbecausetheymakemoremoneythanIdo.4.与否定词not连用，有时构成并列的because分句E.g.①Shesaidthattocomforthim,notbecauseshebelievedit.②Ienrolledinthetutorialcentre,becauseIhadto,notbecauseIwantedto.③Hewenttobedearlytoday,nottired,becausehewashadnothingtodo.*其他引导原因状语从句的连接词有哪些1.nowthat通常置句首，表示既然，相当于since，但nowthat具有时间概念，所引导的从句中的谓语动词多为现在时态E.g.Nowthatyouhavecome,youmayaswellstay.Nowthattheyhavetakenmattersintotheirhands,thepaceofeventshasquickened既然你是个男子汉，就不要做这样的事情。Nowthatyouareaman,youmustnotdosuchathing.2.considering(that)表示考虑到，seeing(that)表示既然E.g.①Considering(that)he'sonlybeenlearningEnglishayear,hespeaksitverywell.②Sheknowsquitealotaboutit,considerting(that)sheisveryyoung.①Seeingthathe'sbeenoffsickallweek,heisunlikelytocometoday.②Seeing(that)herefusedtohelpus,there'snoreasonwhyweshouldnowhelphim.3.inthat本义表示“在...方面”，也可表示“因为”E.g.①Mendifferfrombrutesinthattheycanthinkandspeak.②Ilikethecity,butIlikethecountrybetterinthatIhavemorefriendsinthecountry.1.在强调句中强调原因状语从句，只能用because引导，不可用as或since.2.because可以引导表语从句,而as,since不可以，这时主语一般都是it,this,thatItwas________hewasillthathedidn’tgowithus.It’s_________heistoolazy.3.since表示“既然”，只能放主句前._______wehavenomoney,wecan’tbuythatvase.because用because,as,since填空becauseSince1____you'vegotachance,youmightaswellmakefulluseofit.(NMET99)A.NowthatB.AfterC.AlthoughD.Assoonas2.Amancannotsmilelikeachild,____achildsmileswithhiseyes,whileamansmileswithhislipsalone.(2006湖南)A.soB.butC.andD.for