He is _____byy the river . 这里为什么不能填写skating,swimming,boating只能填写fishing?

Question

如题所述

Answer 1

He is _____ by the river.

by the river 在小河侧
He is fishing by the river. 他是在河边垂钓。

例如：
swimming in the river. 在河里游泳。 用 in ~

所以 skating,swimming,boating 不适合。

Answer 2

skating 后面接on the river
swimming后面接in the river
boating 后面接in the river

这句话的意思是：他在河边钓鱼。本回答被网友采纳

Answer 3

by the river 是在河边的意思
swinmming用in the river
boating 用 on the river
skating滑冰