plan on doing sth...
打算做某事
hope to do 希望做某事
plan on doing sth.打算做某事
lots to do 有许多事情可做
例句：So it is a good idea to have very high engines,ECM and cloak on your ship if you plan on doing attack and runs.
如果你打算进行突袭,最好是拥有高等级的发动机、电子对抗措施以及掩护.
plan to do sth..
1.计划去做某事
vacation plans 假期计划
plan to do sth 计划去做某事
make a movie 拍一部电影 ...
2.计划干...打算干
elementary school 小学
plan to do sth 计划干...打算干
coach a football team for kids 训练少年足球队
唯一不同的是
plan on doing 有一层“ 希望去做” 的意思,明白了这层意思也就好区分了.
plan to do 主要指 计划 计划的意味较浓.