鸭是用in the river 还是on the river

鸭是用in the river 还是on the river 是The ducks are swimming on the river 还是in the river?是There are some boats on the river还是in the river [英语]在河上钓鱼的人是on the river还是in the river?按理人坐在船上应该是on the river的呀是吗,求教 in the river和on the river有什么区别 是there is a boat in the river还是there is a boat on the river越说越糊涂 英语:“一艘小船在河里”,是用on the river还是in the river?(A boat is _____ the river.)简单的问题要速度！！ Look at the boat ( )the river是填in还是on啊? the boy is swiming in the rive这个英语句子有毛病吗?重点：我想问一下是on the river还是in the river 船是用in the river 还是on the riverthere is a boat______ the river.in the river 是在水中on the river是在水面上我认为是用in 因为船下部是在水里的 可是有人说是on请说明理由和详解 但不要复制一大堆什么 i on the river 请名师指导：in the river 与on the river区别, They are swimming in the river 还是（they are go swimming in the river) On hot days we often (b ) in the river.填空 on a river,on the river,in the river的区别它们的意思是什么?有什么区别?on a river,on the river可以互换吗?在河边 用哪个? the Changjiang River is the ( ) river in China空里面填 longest 还是 longer 英语翻译是in the river 还是near the river ,两者都可以吗?有什么区别? The ball went in the d___ of the man sitting in a boat on the river. The ball went in the d___ of the man sitting in a boat on the river.