Perhaps the most distinctive differ

Perhaps the most distinctive difference between Old and Modern English reflected in Aelfric's sentences is the elaborate system of inflections, of which we now have only remnants. Nouns, adjectives, and even the definite article are inflected for gender, case, and number: ðære ðeode "(of) the people" is feminine, genitive, and singular, Angle "Angles" is masculine, accusative, and plural, and swilcum "such" is masculine, dative, and plural. The system of inflections for verbs was also more elaborate than ours: for example, habbað "have" ends with the -að suffix characteristic of plural present indicative verbs. In addition, there were two imperative forms, four subjunctive forms (two for the present tense and two for the preterit, or past, tense), and several others which we no longer have. Even where Modern English retains a particular category of inflection, the form has often changed. Old English present participles ended in -ende not -ing, and past participles bore a prefix ge- (as geandwyrd "answered" above).
The period of Middle English extends roughly from the twelfth century through the fifteenth. The influence of French (and Latin, often by way of French) upon the lexicon continued throughout this period, the loss of some inflections and the reduction of others (often to a final unstressed vowel spelled -e) accelerated, and many changes took place within the phonological and grammatical systems of the language. A typical prose passage, especially one from the later part of the period, will not have such a foreign look to us as Aelfric's prose has; but it will not be mistaken for contemporary writing either. The following brief passage is drawn from a work of the late fourteenth century called Mandeville's Travels. It is fiction in the guise of travel literature, and, though it purports to be from the pen of an English knight, it was originally written in French and later translated into Latin and English. In this extract Mandeville describes the land of Bactria, apparently not an altogether inviting place, as it is inhabited by "full yuele [evil] folk and full cruell."
In þat lond ben trees þat beren wolle, as þogh it were of scheep; whereof men maken clothes, and all þing þat may ben made of wolle. In þat contree ben many ipotaynes, þat dwellen som tyme in the water, and somtyme on the lond: and þei ben half man and half hors, as I haue seyd before; and þei eten men, whan þei may take hem. And þere ben ryueres and watres þat ben fulle byttere, þree sithes more þan is the water of the see. In þat contré ben many griffounes, more plentee þan in ony other contree. Sum men seyn þat þei han the body vpward as an egle, and benethe as a lyoun: and treuly þei seyn soth þat þei ben of þat schapp. But o griffoun hath the body more gret, and is more strong, þanne eight lyouns, of suche lyouns as ben o this half; and more gret and strongere þan an hundred egles, suche as we han amonges vs. For o griffoun þere wil bere fleynge to his nest a gret hors, 3if he may fynde him at the poynt, or two oxen 3oked togidere, as þei gon at the plowgh.
The spelling is often peculiar by modern standards and even inconsistent within these few sentences (contré and contree, o [griffoun] and a [gret hors], þanne and þan, for example). Moreover, in the original text, there is in addition to thorn another old character 3, called "yogh," to make difficulty. It can represent several sounds but here may be thought of as equivalent to y. Even the older spellings (including those where u stands for v or vice versa) are recognizable, however, and there are only a few words like ipotaynes "hippopotamuses" and sithes "times" that have dropped out of the language altogether.
We may notice a few words and phrases that have meanings no longer common such as byttere "salty," o this half "on this side of the world," and at the poynt "to hand," and the effect of the centuries-long dominance of French on the vocabulary is evident in many familiar words which could not have occurred in Aelfric's writing even if his subject had allowed them, words like contree, ryueres, plentee, egle, and lyoun.