变否定句are后面加not：They are not dancing.变疑问句：Are they dancing？肯定回答：Yes，they are.否定回答：No，they aren’t.望采纳，谢谢！
您好否定句 they are not dancing.疑问句 are they dancing ?肯定回答 yes， they are.否定回答 no，they are not满意请关注我
