"what about"相关的语法后面接名词词性，因为about是介词。
知识扩展：
What
about 意思是...怎么样。因为about 是介词，所以后面要跟v-ing.
What about having a rest?意思是 “休息一会怎么样？”
又如：What
about going to a movie this
afternoon?今天下午去看电影怎么样？
I like listening music,what about you?(我喜欢听音乐，你呢？)
There is much work to do,what about making a form for you?(这有很多工作需要做，你做表格如何？)
温馨提示：答案为网友推荐，仅供参考