...英语的发展史,只是英语这种语言的发展史,我是一个高一的学生,词汇量...答:When Julius Caesar, later to be Roman Emperor, invaded Britain in BC 54-5, the 'Celtic' tribes lived in the British Isles. Their Celtic languages still survive as 'Gaelic' in Scotland & Ireland, 'Welsh', in Wales, and 'Manx' in the Isle of Man, as well as 'Breton' in...