1 . by boat 乘船。如：

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

　　注：by boat 有时可用 in a boat 代之。

　　2 . go boating 去划船。如：

　　We go boating on the lake every weekend. 每个周末我们都到湖里去划船。

　　3 . be in the same boat 处于同样境况， 同舟共济。如：

　　If you lose your job, Ill lose mine, so were in the same boat. 如果你失业，我也会失业，所以我们同舟共济。