Ⅰ. boat “船、艇，”是普通用语。主要指用浆、篙、帆或引擎的小船、小艇，但有时也指大轮船。如：

　　① We crossed the river by boat. 我们乘船过河。

　　② They pulled the boat up on to the shore. 他们把这条船拖上了岸。(指小船)

　　③ When does the boat leave for Shanghai?(指轮船)

　　Ⅱ. ship “船、舰，”多指大的航海船只。如：

　　① The ship is at sea. 船厂在航海。

　　② They went to Guangahou by ship. 他们乘船去广州。