The development history of English is generally divided into three stages: (1) Old English (or Anglo-Saxon) from 450 AD to 1200 AD; (2) Middle English from1200 to 1500; (3) The period from 1500 to the present is modern English, among which1500 to16 belongs to early modern English. The first stage (period) is to extract it as an affix to construct English vocabulary, which is the root of old English. For example: -beorgan- = protection (borough town),-blawan-= toblowflow (flame), -brecan- = breaking (brick brick brick), -cn-= production (kindred),-dragon-= drawing (dray minivan), -haelan- = -SCEOTAN-= ToShot shot, -sceran- = cutting/splitting/splitting (scoring), -sticky-= sticky (steak), twa- = twice (twice).