with后面加过去分词the relation development mainly focus on the economic sector,with the mainland Taiwai's largest trading partner.为什么不能填been表示已经成为最大的贸易伙伴

分类: 作业答案 • 2023-01-24 09:39:56

问题描述：

with后面加过去分词
the relation development mainly focus on the economic sector,with the mainland Taiwai's largest trading partner.
为什么不能填been表示已经成为最大的贸易伙伴

答

being
这里是主动意味,即“ the mainland 【is】 Taiwai's largest trading partner.