写作八大功能段（二）【分析原因功能段】1.总原因的阐述①Anumberoffactorsareaccountableforthissituation.②Anumberoffactorsmightcontributeto/accountforthephenomenon/problem.③Theanswertothisprobleminvolvesmanyfactors.④Thereasonscanbelistedasfollows.⑤Herearemanyreasonsexplaining/accountingfor/contributingto...⑥Thereasonsfor…mainlylieinthefollowingtwoaspects.⑦Thisargument/situation/phenomenon/problemcanbeprovedbythefollowingfacts.中文：许多原因导致这个问题、现象。2.分析原因功能句（由具体原因数量决定）①Oneofthemostcommonfactorsis…②Anothercontributingcauseis…③Perhapstheprimaryreasonis…④Butthefundamentalelementis…⑤…comesfirst.Thesecondreasonis…Besides,…中文：第一个原因是..;第二个原因是…;第三个原因是…；最后一个原因是…
