Question

I was six years old playing in my backyard句子成分？

Answer 1

I was six years old playing in my backyard. 我那时六岁，在后院玩耍。

句子成分如下：

I 主语，was 系动词谓语，six years old 表语，playing in my backyard 现在分词短语作状语，其中in my backyard是介词短语作地点状语，修饰现在分词playing。

Answer 2

I was six years old playing in my backyard.我当时六岁，在后院玩。
主语是I,
was是练习动词，
six years old是表语部分，
playing in my backyard是现在分词短语作伴随状语。

Answer 3

主语I ＋谓语动词was +宾语six years old +状语playing in my backyard

Answer 4

I was six years old 主系表结构
playing in my backyard 现在分词作状语