确定是

很急促地喘气 那您怎么能 确定是 她打的呢

(她一直喘气) ── Previous context

“She was just breathing very rapidly. Then how could you be sure it was her calling?”

但现在不 确定是 丁来还是刘义

(金龙峰同志击中了一名嫌犯) ── Previous context

“But we're not sure if it was Ding Lai or Liu Yi.”

如果 确定是 一个人

(也基本上一致 所以大致可以判断是同一个人) ── Previous context

“If they're the same person,”

那这房子你 确定是 要卖了是吧

(我有办法) ── Previous context

“So you are sure you want to sell this place?”

确定是 这儿吗 哥 徐雷就在那儿

(小虎) ── Previous context

“Are you sure it's here? Brother, Xu Lei is over there.”

你 确定是 她送的

(你说 她能送我啥礼物) ── Previous context

“Are you sure it's from her?”