第1个回答 2013-01-12
Why not/Why don't we go to the park?
What/How about going to the park?
Shall we go to the park?
第2个回答 2013-01-12
Shall we go to the park ?
=Why not go to the park ?
=Why don"t you go to the park ?
=What/How about going to the park ?
第3个回答 2013-01-12
Let's go to the park,shall we ? ==Shall we go to the park?