在英语中，当有鸭子在河里时，可以说"There are ducks in the river." 或者 "There are ducks swimming in the river."
这个短语的来源源于日常生活中观察到鸭子在河流中游泳的情况。
下面是一些关于有鸭子在河里的英文例句，以及它们的中文翻译：
"I saw a group of ducks swimming in the river when I was walking by the park this morning." (我今天早上在公园散步时看到了一群鸭子在河里游泳。)
"The ducks in the river are so cute! I could watch them for hours." (河里的鸭子真可爱！我可以看他们好几个小时。)
"We should bring some bread to feed the ducks in the river. They'll love it." (我们应该带些面包来喂河里的鸭子。他们会很喜欢的。)
这个短语的来源源于日常生活中观察到鸭子在河流中游泳的情况。
下面是一些关于有鸭子在河里的英文例句，以及它们的中文翻译：
"I saw a group of ducks swimming in the river when I was walking by the park this morning." (我今天早上在公园散步时看到了一群鸭子在河里游泳。)
"The ducks in the river are so cute! I could watch them for hours." (河里的鸭子真可爱！我可以看他们好几个小时。)
"We should bring some bread to feed the ducks in the river. They'll love it." (我们应该带些面包来喂河里的鸭子。他们会很喜欢的。)