twenty years is a short time in history句子成分

the girl (standing under) the tree (is) his daughter
twenty years is (a short time)( in history)

第1个回答  2013-09-12
twenty years 是主语
is 是系动词
a short time是表语
in history是状语
the girl 是主语
(standing under) the tree 是定语
(is)是系动词
his daughter是表语