1·There were ducks quacking on the lawn.
有鸭子在草坪上发出嘎嘎的叫着。
—— 《柯林斯英汉双解大词典》
2·Look at those big ducks.
看那些大鸭子。
3·These ducks often sleep in a line.
这些鸭子经常排成一行睡觉。
4·I like ducks. I like sheep.
我喜欢鸭子。我喜欢羊。
5·There weren't any ducks.
原来没有任何鸭子。