what about sth,how about sth,how do you like sth,what do you think of sth都有什么区别?

What about sth=How about sth ……怎么样?eg .What about going to the park?How about going to the park?去公园怎么样?How do you like sth,=What do you think of sth 你觉得……怎么样eg.How do you like...