区分:abroad / aboard /broad / board
●abroad adv. 在国外（副词, 直接和动词连用）
go abroad 去国外
live abroad 国外定居
study abroad 国外学习
She had just returned from abroad. 她刚从国外回来。
●aboard adv. 上船/飞机/车
The plane crashed, killing all 200 people aboard. 飞机失事，机上200人全部遇难。
●board n. (可数)板，木板，甲板
on board 在船/火车/飞机上（aboard） blackboard 黑板
n．（不可数）伙食，膳食
When his family fell on hard times, he was offered free room and board.
当他家里艰难的时候，有人给他提供了免费食宿。
vt & vi 登上(船/飞机/车)
a boarding card/pass 登机牌
You plane is now boarding at Gate 7. 您乘坐的航班正在7号登机口登机。
●broad adj. 宽阔的；广阔的
He was tall, with broad shoulders and a beard. 他高个、宽肩，留着胡子。
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