这句话为什么grow become 要加ing 做什么成分
问题描述：
这句话为什么grow become 要加ing 做什么成分
the themes of the stroy are to do with children growing up and becoming more serious
答
The themes of the stroy are to do with children growing up and becoming more serious.
=The themes of the stroy are to do with children who are growing up and becoming more serious.
growing up and becoming more serious是两个并列的现在分词短语,在句中做定语,相当于一个定语从句.