That's your brother祝你学习进步O(∩_∩)O哈!如果对你有所帮助,还望采纳O(∩_∩)O哈!如还有不懂的,还可以继续追问哦\(^o^)/~
That is your younger brother.
That is your little brother.
This is your brother.
that is your younger brother.