1. I thought , at the time, that this was just a story but then I witnessed it with my own eyes many times. 1)at the time “那时候”，位置应在story之后，作时 间状语， 提前是为了强调，that this was just a story作 thought的宾语。 2) 此处witness用作动词，意思是“亲眼看到”，如: 你亲眼看到那场事故了吗？ Did you ________ the accident? a) witness 还可表示“作证”、“证明”，常用“witness to sth/doing sth”例如：

witness