1） Are you kidding=Are you pulling my leg??
你在開玩笑嗎?
example:
-do you know that Andy is going out with someone?
-what? are you kidding? i am still a bachelor.
-so who is that girl walking along the street with you yesterday?
-my god! she is my sister and she has got married and her baby is 5 years old!
-wow, your sister looks so young.
2） No kidding!
我不是在開玩笑.=I am serious!
example:
-Andy, you didn't pass the exam!
-I know you are kiddding.
-No kidding.
你在開玩笑嗎?
example:
-do you know that Andy is going out with someone?
-what? are you kidding? i am still a bachelor.
-so who is that girl walking along the street with you yesterday?
-my god! she is my sister and she has got married and her baby is 5 years old!
-wow, your sister looks so young.
2） No kidding!
我不是在開玩笑.=I am serious!
example:
-Andy, you didn't pass the exam!
-I know you are kiddding.
-No kidding.