tooth的复数形式

　　相关例句：1、You should pull out this tooth.　　你必须把这颗牙齿拔掉。

　　2、In the morning my tooth is not there. But I find some coins!　　早上的时候我的牙齿不在那了但是我发现了一些硬币。

　　3、I pictured him with a little one on his knee, helping her write her first letter to the Tooth Fairy.　　我想象着有一个小宝贝坐在他的膝上，他抱着她，帮她给牙齿仙女写第一封信。