求翻译：古英语时期从公元五世纪中叶开始，到公元十二世纪中叶为止（450-1150）[449-1066]。中古英语时期从公元十二世纪中叶开始，到公元十五世纪中叶为止（1150-1450）。现代英语时期约从公元十五世纪中叶开始（1450年以后）。现代英语时期又分为早期现代英语时期（约1450年开始-大约1700年为止）和现代英语时期（约从1700年开始-当前）。是什么意思？

Old English period from the mid-fifth century, until the mid-12th century AD (450-1150) [449-1066]. Middle English period, beginning from the mid-12th century AD, up to the mid-15th century (1150-1450). Modern English period from about the mid-15th century (1450 onwards). Modern English period is di

old English period, beginning from the mid- 5th century BC until mid- 12th century (450 - 1150) [ 449] - 1066. from medieval English period since the middle 12th century BC, until the mid- 15th century BCE (1150 - 1450 ). Modern English period from about 15 B.C. , start by mid-century (1450 onwards)

The ancient English time starts from the A.D. five century middles, to A.D. 12 century middles up to (450-1150)[449-1066].The Middle Ages English time starts from the A.D. 12 century middles, to A.D. 15 century middles up to (1150-1450).The modern English time will start approximately from the A.D.

Old English period starting from the middle of the Fifth century AD, up to the middle of the 12th century AD (450-1150) [449-1066]. Middle English period starting from the middle of the 12th century AD, by the year until the middle of the 15th century (1150-1450). Modern English period about startin

Old English period starting from the middle of the Fifth century AD, up to the middle of the 12th century AD (450-1150) [449-1066]. Ad 12th century century Middle English period and that by 15th century until middle (1150-1450 on). Modern English period about starting from the middle of the 15th cen