后边可以加to，也可以不加to，例如：
1、In order that training should be effective it must be planned systematically.为使培训有成效，必须有系统的计划。
2、A meeting has been planned for early next year.会议计划明年年初召开。
3、We planned the day down to the last detail.我们极为详细地安排了这一天的日程。
planned是形容词 计划好的，有计划的a planned economy 计划经济plan+ to do 计划去做..
family doesn't like my plan to live by + doing on/to do 打算做某事 should plan on staying/to s...