Have you seen my dictionary Yes.l put it in your desk just n

題目：

Have you seen my dictionary Yes.l put it in your desk just now
爲什麼用have.seen而不用Did.see
我覺得看沒看到對現在沒什麼影響啊

解答：

提問者的本意是問你是否知道我的詞典在哪裡?側重點是你是否知道我的詞典在哪裡(現在的狀態),而不是你有沒有見過我的詞典(過去的動作).試比較：
Have you seen my dictionary?Yes,I put it in your desk just now./ No,I don't know where it is.
When did you see it?Yesterday.
使用過去時和完成時,其側重點有明顯區別,可根據提問者的本意及回答進行判斷