1、名词的第四、第五变格法 The 4th Declension & the 5th Declension,第四变格法,属于该变格法的名词大部分是阳性（其中相当一部分名词与感觉、感官有关，如sensus, -us, m 感觉; auditus, -us, m 听觉; gustus, -us, m 味觉; odoratus, -us, m 嗅觉），还有少数是阴性及中性；阳性、阴性名词单数主格多以-us结尾中性名词单数主格多以-u结尾特征：单数属格以-us结尾,fructus, -us, m 果实单 复 主 fructus fructs 属 fructs fructuum 与 fructui fruc
2、tibus 宾 fructum fructs 呼 fructus fructs 夺 fruct fructibus,manus, -us, f 手单 复manus mans mans manuummanui manibusmanum mansmanus mansman manibus,genu, -us, n 膝盖单 复 主 genu genua 属 genus genuum与 genu genibus宾 genu genua呼 genu genua夺 genu genibus位,domus, -us, f 家单 复domus domusdomus domuumdomi domorumdomu
3、i domibus domo(rar.)domum domosdomus(rar.)domus domusdomo domibusdomu(rar.)domi domis,练习：,exercitus, -us, m 军队exercitus exercitus exercitus exercituum exercitui exercitibus exercitum exercitus exercitus exercitus exercitu exercitibus,cantus, -us, m 歌曲cantus cantuscantus cantuumcantui cantibuscantum
4、cantuscantus cantuscantu cantibus,ficus, -us, f 无花果ficus ficusficus ficuumficui ficibusficum ficusficus ficusficu ficibus,cornu, -us, n 角cornu cornuacornus cornuumcornu cornibuscornu cornuacornu cornuacornu cornibus,第五变格法,属于该变格法的名词数量不多，其中大部分为阴性，只有两个词是阳性dies及其复合词meridies,该变格法中没有中性名词；该变格法的名词其主格单数几乎都以-
5、es结尾特征：单数属格以-ei结尾,dies, diei, m 日子，白天单 复 主 dies dies 属 diei dierum 与 diei diebus 宾 diem dies 呼 dies dies 夺 die diebus,res, rei, f 事情单 复res res rei rerumrei rebusrem resres resre rebus,练习：,fides, -ei, f 信仰，信任fides fides fidei fiderum fidei fidebus fidem fides fides fides fide fidebus,spes, spei, f 希望
6、spes spesspei sperumspei spebusspem spesspes spesspe spebus,res + 形容词 = 抽象事物res publica = 国家，共和国res divina = 祭祀res incerta = 困难res familiaris = 遗产，财产res bellicae (pl.) = 军队 res secundae (pl.) = 成功res gestae (pl.) = 事件、事迹、活动（多见于历史文献）,罗马数字,I ,II, III, IV, V, VI, VII, VIII, IX, XL, C, D, M XV, LXX, XL, XC, DC, CM/DCCCC,
