一个英语长句,谁能帮帮我分析一下逗号后面的结构,The economic links between China and Australia have become so strong that the Aussie dollar is now used by many foreign exchange dealers as a proxy for the yuan,a guide to where the Chinese currency would be trading were Beijing to remove its restrictions.逗号前面都没问题,后半句看不明白,特别是那个were的主语是什么?
问题描述：
一个英语长句,谁能帮帮我分析一下逗号后面的结构,
The economic links between China and Australia have become so strong that the Aussie dollar is now used by many foreign exchange dealers as a proxy for the yuan,a guide to where the Chinese currency would be trading were Beijing to remove its restrictions.
逗号前面都没问题,后半句看不明白,特别是那个were的主语是什么?
答
这是个虚拟语气.省略了if .原句是：a guide to where the chinese currency would be trading if Beijing were to remove its restrictions.
省略if 后,要倒装,就把were 提到主语 Beijing之前.