why not to do 还是why not doing why not doing还是 why not do？

why not to do\u8fd8\u662fwhy not doing

Why not\u540e\u9762+do sth. How/What about\u540e+doing sth.

Why not +\u52a8\u8bcd\u539f\u5f62,\u5b83\u7b49\u540c\u4e8eWhy don't you.....,\u53ef\u7528How/What about doing sth\u66ff\u6362.

why not do ,你说的那两个都不对啊

扩展阅读：www.sony.com.cn ... significant ... how about doing ... considering ... would you like to do ... appointment ... be used to doing ... however ... pay attention to ...