they are having lunch now.改为否定句
问题描述：
they are having lunch now.改为否定句
答
they are having lunchnow.改为否定句they are not having lunchnow.（欢迎追问，随时在线解答）
答
they are not having lunch now.
(*^__^*)
答
they aren't having lunch now
他们现在不在吃午饭