waddle的过去式和过去分词

例句：

1、She walked with a waddle.

她走起路来步履蹒跚。

2、A family of ducks waddled along the river bank.

一群鸭子沿河岸摇摇摆摆地走。

3、He came waddling down the hall like a penguin.

他在大厅里蹒跚而行，就像一只企鹅。