回答

・spoiled child

「哥哥變回了一個被寵壞的孩子。」
My brother went back to being a spoiled child.

spoiled child =被寵壞了
go back to =回到
spoiled = 自私、被寵壞

ex. 我的兒子突然變得像個小孩一樣被寵壞了。
My son suddenly becomes a spoiled child and behaves like a baby.
behave like～ = 表現得像

有幫助｜0