Then, around the 7th Century, a vowel shift took place in Old English pronunciation (analogous to the Great Vowel Shift during the Early Modern period) in which vowels began to be pronouced more to the front of the mouth.

然后，大约在 7 世纪， 古英语发音发生了元音转换（类似于近代早期的元音大转换）， 元音开始更多地发到嘴巴前部。