plan的现在分词和过去式是什么

If you plan what you're going to eat, you reduce your chances of overeating...
如果计划一下要吃什么，就有可能不会吃得过多。
The three leaders had worked out a peace plan...
3位领导人已制订出了一个和平方案。
She is planning to take a computer course.
她打算修一门计算机课。
The company is planning a new share issue.
公司正计划发行新股