1.on board在船（汽车、轮船、飞机、飞船等）上，上船、火车、飞机；已装船
登机(船)可以说go / get on board the plane /aeroplane/aircraft/ train / the ship.
The contract warrants that an experienced person is on board all the time.
合同确保一位富有经验的人会一直呆在船上。
We had a pleasant time on board both ships.
我们在两艘船上都度过了快乐的时光。
The captain refused to leave his sinking ship while there were others on board.
在船上还有其他人的时候，船长不肯离开正在下沉的船。
The word was finally given for us to get on board.
终于通知我们登乘了。
On board were enough provisions for two weeks.
船上有足够两周吃的食物。
The six astronauts on board will spend ten days in space.
飞船上的6名宇航员将在太空度过10天。
We have people on board geared up to help with any problems.
我们已让船上的人做好准备帮助解决任何问题。
They arrived at Gatwick airport on board a plane chartered by the Italian government.
他们乘坐意大利政府的包机到达盖特威克机场。
We went on board and saw these people packed shoulder to shoulder on the decks.
我们上了船，看见这些人在甲板上肩挨着肩挤在一起。
There were about 250 people on board, about 100 more than the ferry was licensed to carry.
渡船上大约有250名乘客，超出了核定载客量约100名。
The cargo on board have been damaged by sea water.
船上的货物因水湿而残损。
All the students have gone on board.
所有的学生都已上船了。
When all passengers were on board, the train pulled/drew out of the station.
所有乘客都上车后，火车开出了车站。
No dangerous articles allowed on board.
严禁携带危险品登机。
I saw there were two instructors on board and a man lying across the middle ．
我看到船上有两个教官,中间躺着一个人。
高考真题- 2018 全国2
It was sealed up and kept on board until the ship came home safely.
它被密封在船上,直到船安全回家。
中考真题- 2016 福建
be on board with sth 赞成，同意，认可
Is the bride on board with the new seating plan?
新娘同意安排吗？
Is everyone on board with the new plan?
大家都同意这个新计划吗？
be on board for sth 乐意参与某个活动或某事
It's good to have you on board for this project.
这项工程有你和我们携手合作真是太好了。
The entire class was on board for the excursion to the park.
全班同学都乐意去公园游览。
take sth on board
采纳，接纳
I told her what I thought, but she didn't take my advice on board.
我把我的想法告诉了她，可她没有采纳我的建议。
I shall be hoping that the council will take that message on board.
我希望安理会能够采纳这一信息。
I listened to them, took their comments on board and then made the decision.
我听取了他们的意见，采纳了他们的意见，然后做出了决定。
2.on the board在黑板上，在木板上，在布（公）告牌上，公示牌上，在棋盘上；在会上讨论；董事会;在董事会
公示牌 随着产业革命和生产力的发展，人们生活和社会生都发生着巨变，出现了新的经济形式，董事会这个掌管着公司重大决定的组织应运而生，由于他们开会前总把开会地点和时间写在公示牌上，开会内容经常通过公示牌公示出来，久而久之 board 就有了董事会的意思。
The teacher wrote the answers on the board.
老师把答案写在黑板上。
She chalked the day's menu on the board.
她把当天的菜单用粉笔写在黑板上。
I'll write it up on the board.
我会把它写在黑板上。
He wrote a few more notes on the board.
他在黑板上又写了几条注释。
Write the figure '7' on the board.
把数字7写在黑板上。
There was a notice on the board saying the class had been cancelled.
布告牌上有一则通知说这堂课取消了。
Dr Tinsley had five pieces on the board against Chinook's four.
廷斯利博士在棋盘上还有5枚棋子，对手钦诺克还有4枚。
The majority of seats on the board will be held by business representatives.
理事会的多数席位将由工商界代表担任。
She lined up executives, politicians and educators to serve on the board of directors.
她邀请了高管、政坛人物和教育家加入董事会。
His resignation left a vacancy on the board of directors.
他的引退给董事会留下了一个空缺。
He served on the board of directors of a local bank.
他是当地一家银行的董事会成员之一。
He has been unsuccessful in his attempt to win a seat on the board of the company.
他始终未能如愿以偿地在公司董事会中谋得一席之地。
He's on the board of directors.
他是董事会成员。
As I recall, you're not on the board, Joe; you're only a minor shareholder.
我记得你并没有进董事会，乔，你只是一个小股东而已。
Mary is a workers' representative on the board.
玛丽是董事会中的一名工人代表。
He is still on the board, but he resigned as chairman some months ago.
他仍在董事会，但几个月前他辞去了董事长职务。
The point will be laid on the board at the next meeting of the directors.
这一点将在下一次董事会上讨论。
The question was on the board yesterday, but the result was not out.
问题昨天得到了讨沦，但没有结果。
on the boards 的意思是“做演员，在戏台上”。
He has retired， but he is still on the boards.
他退休了，但仍活跃在舞台上。
Lily is on the boards, but Katie can get nothing to do.
莉莉当上了演员，凯蒂却无事可做。