plan既可做动词又可做名词，只有在具体的语言环境当中才知道它的明确含义及用法。
一、做名词
1.计划、打算（~for sth.）
Do you have any plans for the summer?
这个夏天你有什么打算？
There are no plans to build new offices.
现在没有建新办公楼的计划。
Your best plan (= the best thing to do) would be to go by car.
你开车去是上策。
We can't change our plans now.
我们现在不能改变计划了。
2.规划、方案（~for sth.）
a plan of action/campaign
行动 / 运动方案
We need to make plans for the future.
我们必须规划未来。
Let's hope everything will go according to plan .
但愿一切都会按计划进行。
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。
3.详图、平面图；示意图
a plan of the museum博物馆详图
a street plan of the city城市街道详图
a seating plan座位安排示意图
a floor plan楼层平面图
二、做及物动词
1.计划、谋划
to plan a trip计划一次旅行
to plan for the future规划未来
A meeting has been planned for early next year.
会议计划明年年初召开。
Everything went exactly as planned .
一切都严格地按计划进行。
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。
2.打算、期待
We hadn't planned on going anywhere this evening.
我们今晚没打算外出。
They plan to arrive some time after three.
他们预计在三点钟以后到达。
3.设计、组织
to plan an essay/a garden
构思文章/设计花园
a well-planned campaign
一场精心策划的宣传活动
4.短语plan out
Plan out your route before you go.
出发前要仔细设计你的路线。