the plane是名詞
On board the plane上飛機
例句：
1.There were more than two hundred passengers on board the plane.
當時在飛機上有兩百多名旅客。
2.After a long queue for check-in, we were finally on board the plane.
經過長期的檢查佇列中，我們終於上了飛機。
3.The service the passengers receive on board the plane determines whether or not they will fly again on one of our airplanes.
旅客在飛機上得到的服務將決定他們是否再乘坐我們航空公司的飛機。
the plane是名詞
On board the plane上飛機
例句：
1.There were more than two hundred passengers on board the plane.
當時在飛機上有兩百多名旅客。
2.After a long queue for check-in, we were finally on board the plane.
經過長期的檢查佇列中，我們終於上了飛機。
3.The service the passengers receive on board the plane determines whether or not they will fly again on one of our airplanes.
旅客在飛機上得到的服務將決定他們是否再乘坐我們航空公司的飛機。