the tree is twelve metres tall 是主系表结构吗?怎么划分该句子成分
问题描述：
the tree is twelve metres tall 是主系表结构吗?怎么划分该句子成分
答
The tree 主语
is 系动词
twelve metres 量词做程度状语修饰形容词tall
tall 形容词作表语