你是认真的吗英文翻译是Are you serious？
serious：
单词释义：不好的；严重的；有危险的；需认真思考的；严肃的；重要的；须重视的
对某人严肃
Be serious to sb
对某事是认真
Be serious about sth
对什么是认真
What is serious about
对什么很认真
What are you serious about
珍妮做作业和他姐姐一样认真
Jenny does her homework as carefully as her sister
对什么什么是认真
What is serious about
我要上课认真听讲
I want to listen carefully in class