observe和remark是两个不同的词, observe是 推断的意思 i observed that he is a open minded man. remark则是say的意思 而且是回答性质的say,, 比如 "ms.jones really had a good time yesterday" "i wish i was there too, and we should have had major fun together" i remarked追问但是observe也有说,评论的意思啊