题目内容：

关于新概念英语第三册 “a puma at large"的一个时态问题
就是文章的第一段中 .the descriptions given by people who claimed to have seen the puma were extraordinarily similar.
这里是"have seen" 再接下来就是 the hunt for the puma began in a small village where a woman picking blackberries saw a large cat only five yards away from her.而这里就用 “saw”!自学的哈,语法搞不懂,敬请指教啊.
再请问 第二个saw可是在 hunt for the puma began 之后啊； began 是动词过去吧 在began 之前看到的不也应该是 have seen