why not do还是why not to do
问题描述：
why not do还是why not to do
答
why not do
为什么不做……
答
Why not do sth,
why don't you do sth
是独立的句子
而why not to do 是非谓语
答
why not do是正确的,why not后边跟V.原型
eg.:why not to be the richest man in china
答
一样的
not do sth.没做某事
not to do sth.没去做某事
to可要可不要