plan: mental formulation and sometimes graphical representation of method or course of action: studied the ~ for the proposed industrial park.


design: often suggests a definite pattern, and some degree of order and harmony: the ~ for three gowns.


plot: implies a laying out in clearly distinguishable sections with attention on their relations and proportion: outlined the ~ for the new play.


scheme: stresses calculation of end in view and may imply a plan motivated by craftiness and self-interests: a ~ to swindle senior citizens of their savings. (储蓄)


project: stresses enterprise, imagination and vision, can sometimes connote ponderous and needless extension: the ~ to develop the waterfront.


plan计划: 是制定方法路线(method course),  design设计: 是制定模式，使和谐有序(order and harmony)， plot情节: 摆出关系比例， scheme方案: 强调有目的的计算，可能狡诈自私， project项目: 需进取心想象力视野(有时暗示笨重过于庞大)。


记忆方法: 1）首字母联想记忆PPP SD三人山东行==>需计划。

         2） 这些词归根到底都是"计划plan"，即做事方法、路线。

         3）计划的意思是为实现目标而设计的方法mean a method devised for making or doing something or achieving an end.