Zuòwéi jiālǐ de dàgē, tā chéngdān le hěnduō zérèn.
As the eldest brother in the family, he took on a lot of responsibility.
Tips
usage
大哥 can be used to address any older male stranger in a friendly way, similar to 'buddy' or 'sir.' It can also carry a mafia/gang connotation (like 'big boss').
