No,they aren't.这是用语以be 动词are提问的一般疑问句或者反意疑问句的否定答语.Are they students?No,they aren't.Are they playing football?No,they aren't.Are these cars made in Japan?No,they aren't.They are in the room,aren't they?No,they aren't.They aren't singing,are they?No,they aren't.
