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1、10逻辑关系（Logicalrelations）(61)原因和结果表原因的词：because,since,as,for,becauseof表结果的词：so一、原因状语从句(1)原因状语从句通常由because,since,as,for引导。(2)because表示直接原因，语气最强。回答由why提出的问题，只能用because。此外，because和so不能同用在一个句子里。eg：------Whywereyoulateforschool?------BecauseIgotuplate.since引导原因状语从句，相当于nowtha
2、t，意思是“因为……，既然……，鉴于……”。eg：Sincetherainhasstopped，let’sgoforawalk.既然雨停了，我们出去散散步吧。as和since语气较弱，一般用来表示明显的原因。由as和since引导的原因状语从居多放在句首。例如：Ashehasnocar,hecan’tgetthereeasily.Sincewehavenomoney,wecan’tbuyit.(3)for表示所说的理由是一种补充说明,for引导的从句一般不放在句子的开头。如: Idecidedtostopandhavelunch,
3、forIwasfeelingquitehungry.练习：Iwaslateforclassyesterday_______therewassomethingwrongwithmybike.Hetookoffhiscoat_______hefelthot.youcan’tanswerthequestion,I’llasksomeoneelse.________thebadweather,wemissedthetrain.二、结果状语从句(1)结果状语从句由so…that,such…that,sothat引导。(2)在由so...tha
4、t引导的结果状语从句其结构是:“...so+形容词（副词）+that+从句”。Eg.Hewassogladthathecouldn’tsayaword.Lipingrunssofastthatwecan’tcatchupwithhim.在由such…that引导的结果状语从句其结构是:“...such+a/an+形容词+名词+that+从句”。eg：Itwassuchahotdaythatnobodywantedtodoanything.Hehadsuchlongarmsthathecouldalmosttouchtheceilin
5、g.（天花板）有时so…that和such...that可以互换。Eg：Itwassuchawonderfulfilmthatallofuswantedtoseeitagain.=Itwassowonderfulafilmthatallofuswantedtoseeitagain.(3)如果名词前由many,much,little,few等词修饰时，只能用so,不用such。eg：Soonthereweresomanydeerthattheyateupallthewildroses.Hehassolittletimethatheca
6、n’tgotothecinemawithyou.(4)如果主从句的主语相同，并且从句是否定的形式，可以用too...to...句型转化。eg：Hewassoexcitedthathecouldn'tgotosleepthatnight.=Hewastooexcitedtogotosleep.(5)如果主从句的主语相同，但从句是肯定的形式，可以用adj.+enough替换。eg：Heissooldthathecouldgotoschool.=Heisoldenoughtogotoschool.他够大了，可以去上学。3练习：Itis__
7、_hotintheroom___wehavetogooutforawalk.Itwasawonderfulmovieallofuswantedtoseeitagain.Therewerelittlewaterinthebottlethebirdcouldn’treachit.三、目的状语从句表目的的词组：sothat,inorderthat,inorderto,to(1)目的状语从句通常由sothat,inorderthat（为了，以便）引导。eg：Westartedearlysothatwecouldcatchthefirsttr
8、ain.Weusedthecomputerinorderthatwemightsavetime.(2)sothat可引导目的状语从句，此时可用to或inorderto替换,将其改为简单句。eg：Hegotupearlysothathe
