题目内容：

求分析句子结构 It's about a 40-minute walk from here.

优质解答

【It 主语】【 is谓语】【 about a 40-minute walk from here表语】.
【a 40-minute 定语,修饰后面主体名词】walk【 from here 介词短语,定语,修饰前面名词】