同学你好，该知识点来自沪江网校《英语零基础直达大学六级全能畅学卡【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
答案如下：
1 Q： Can he come now?
Q： When can he come?
N：He can’t come now.
2 Q：Is there a newspaper on the desk?
Q：What is there on the desk?
N： There isn’t a newspaper on the desk.
3 Q：Does he want a new car?
Q：What does he want?
N：He doesn’t want a new car.
4 Q：Is he going to come now?
Q：When is he going to come?
N：He isn’t going to come now.

其语序是：特殊疑问词+be/助动词/情态动词+主语+谓语

祝同学学习进步~