连词加非谓语什么情况出现

连词加非谓语通常是指连词加分词，他们组成一状语，修饰，说明谓语的情况的，其作用相当于一个状语从句。
1.连词加现在分词。
After finishing the homework,he went home.（=After he finished the homework...)
2.连词加过去分词。
When asked about the question,he said nothing.(=When he was asked about the question...)

连词连接两个并列的非谓语部分时才会出现呀!
如：Reading and talking are very important for beginners.读和说对初学者非常重要。

when asked the question, he laughed.