“Really?”可以单独做一个句子,表示吃惊、怀疑或兴趣等,意思是:“真的吗?”如:
“They're getting divorced.”“Really?”[= I am surprised to hear that and would like to hear more.] “他们正在闹离婚。”“真的吗?” (《韦氏高阶英汉双解词典》p.1722)
“I think she likes me.” “Oh, really.”[=I am doubtful that she really likes you.] “我觉得她喜欢我。”“噢,真的吗?”(同上)