There was a boy ( )in a cold river 答案是swimming 可我不明白这是为什么,为什么不能填swim
问题描述:
There was a boy ( )in a cold river 答案是swimming 可我不明白这是为什么,为什么不能填swim
答
过去进行时啊
前面是be动词的过去式,当然用ing形式啊
改成现在时不就是There is a boy swimming in a cold River.