第1个回答 2010-09-20
1、最简单的：really? you sure?are u serious?
2、其他的you mean it?或者you realluy mean it?
3、隐性的are you joking?no kidding,please
第2个回答 2010-09-19
Do you tell the truth?本回答被网友采纳
第3个回答 2010-09-19
DO you say really?一般现在时态
Are you saying really?现在进行时态
第4个回答 2010-09-19
Do you really mean it?
第5个回答 2010-09-19
Are you serious?