你不在是一个孩子了用英语怎么说

"You are not a child anymore" 用英文表达为 "You are not a child anymore."
这句话的来源是指一个人长大了，不再是小孩子了。
例句：

"John, you are not a child anymore. It's time to start taking responsibility for your actions." (约翰，你不再是孩子了。是时候开始对你的行为负责了。)
"You can't keep acting like a child, you are not a child anymore." (你不能继续像个孩子一样行事，你不再是孩子了。)
"You are not a child anymore, it's time for you to start making your own decisions." (你不再是孩子了，是时候让你开始做自己的决定了。)