现代英语用语序消灭了古英语中的主格和宾语，用介词消灭了属格和与格

Nouns
Old English nouns had grammatical gender (masculine, feminine, neuter), singular and plural number, and were also classified as "strong" or "weak" according to the distinctness of their inflectional endings (some other classifications involve the stems that the nouns carried in Germanic and whether the noun was affected by front mutation).

古英语中，名词分为：性（阳性、阴性、中性）、数（单数、复数）和强、弱等多种变化形式。

All of these classifications called for specific inflectional endings in each of the cases used in Old English: nominative, accusative, genitive, and dative

古英语中，名词还有4种格变化：主格、宾格、属格、与格。

Example, bat ("boat") (a masculine, strong a-stem noun):

Singular（单数）

Nominative: bat（主格）
Accusative: bat（宾格）
Genitive: bates （属格）
Dative: bate （与格）

Plural（复数）

Nominative: batas
Accusative: batas
Genitive: bata
Dative: batum

Sample sentence:

se bat seglode fif dagas ("the boat sailed for five days")

bates segl is lytel ("the boat's sail is small [little]")

fif batas seglodon ofer brim ("five boats sailed over the sea")

seglas bata sind lytele ("the sails of the boats are small")

现代英语和现代汉语一样，通过词序（word order）来确定句子的主语和宾语，所以也就不需要再特意区分主语和宾格。也就是说，现代英语是用词序消灭了古英语中名词的主格和宾语。

现代英语中，增加了介词，有了介词的帮助，也就不用再区分名词的属格和与格。也就是说，现代英语用介词消灭了古英语中的属格和与格。