But even as the number of English speakers expands further there are signs that the global predominance of the language may fade within the foreseeable future.
根据断句长短适中、语法长度完整的原则，我们可以把这句断成3个部分如下：
① But even as the number of English speakers expands further
② there are signs
③that the global predominance of the language may fade within the foreseeable future.
分析各部分的结构：
① 并列连词(But)+从属连词( even as)+主语( the number of English speakers)+谓语( expands )+状语(further)
② there be 句型：there are signs
③同位语从句：从属连词(that)+主语( the global predominance of the language)+谓语( may fade)+状语( within the foreseeable future).
参考译文：但尽管说英语的人数进一步增加，仍有迹象表明该语言的全球主导地位可能在可预见的将来逐渐消失。
