beak过去式是什么

beak是名词，没有过去式的说法。

  beak的意思是鸟嘴，鹰钩鼻子，地方执法官，男教师。

  例句：

  1、Its long and once sharp beak becomes bent.

  其一度锋利的长喙已变得钝拙弯曲。

  2、It is black with white feathers and a red beak.

  它是黑色的，有白色的羽毛和一个红色的嘴。

  3、This type of whale is notable for its elongated beak. It dives deeper than 500 metres for food.

  这种鲸因其瘦长的喙而闻名。它能够潜入深度超过500米的海中寻找食物。