It gives a basis to all organizations which seek to promote the learning and use of English, a basis for planning to meet the possibilities of what could be a very different operating environment.
断句：
① It gives a basis to all organizations
② which seek to promote the learning and use of English,
③ a basis for planning to meet the possibilities
④ what could be a very different operating environment.
各部分结构：
① 主语(It )+谓语(gives )+直接宾语(a basis)+间接宾语( to all organizations )
② 定语从句：主语(which)+谓语( seek to promote)+宾语( the learning and use of English, )
③ 同位语：a basis +定语(for planning to meet the possibilities )
④ 定语：of +宾语从句(what could be a very different operating environment.)
参考译文：这给所有寻求促进英语学习和使用的机构提供了一个基础，该基础用于计划实现非常不同的操作环境所带来的各种可能
