would be语法请帮忙,急用!The impressive economic growth by China over the last quarter of a century would be unthinkable without the economic freedom brought about by reforms initiated in 1978 by the Chinese leadership.请问此句中的would be改如何解释它的语法功能呢?
问题描述：
would be语法请帮忙,急用!
The impressive economic growth by China over the last quarter of a century would be unthinkable without the economic freedom brought about by reforms initiated in 1978 by the Chinese leadership.
请问此句中的would be改如何解释它的语法功能呢?
答
标志揣测语气,即虚拟语气.