没开玩笑用英语怎么说

没开玩笑

No kidding

例句

没开玩笑吧！你能肯定他是和她一起去了？

No kidding! Are you sure that he's gone with her?

你开玩笑！我没开玩笑。我是认真的。

You're kidding! I'm not kidding. I'm serious.