He also put up some signs asking for old bikes and called up all his friends~

题目

He also put up some signs asking for old bikes and called up all his friends~
为什么用asking而不用ask
called为什么用过去式
最好的能说一下什么是定语,伴随状语

答案

因为asking是分词,句子只有一个谓语.(PUT)
put应该是过去式
and连接两个句子,2个句子时态一致
应该这样去看句子 He also put up some signs,asking for old bikes,and called up all his friends.