Turn the following sentence into English and write your sentence on the answer sheet.
作为穷人家的长子，他在孩童时期就懂得了自己的责任是帮助父母。
【正确答案】：
AS THE ELDEST SON OF A POOR FAMILY, HE CAME TO UNDERSTAND IN EARLY CHILDHOOD THAT HIS DUTY WAS TO HELP HIS PARENTS.
【题目解析】：
本题考查常见名词、介词短语的使用。
长子：the eldest son；在孩童时期：in early childhood。
句子结构： 主干：“他懂得了自己的责任是帮助父母”，“作为穷人家的长子”、“在孩童时期”为状语。