Unlike in English, Old English has five gramatical cases; nominative, accusative, genitive, dative and instrumental. Old English also has three genders; masculine, feminine and neuter. Like in English, Old English has two numbers; singular and plural.
The default word order in main clauses is the same as English, with the syntax being subject-verb-object. In subordinate clauses, the syntax is subject-object-verb.
Questions in Old English do not follow a do-support format. Questions are formed by inverting the subject and verb, making the order verb-subject-object.