理工類輔導資料：時、體、態現在完成時與過去一般時

　　(1) Ive seen him this morning(還在上午的時間里)

　　I saw him this morning．(時間已過了上午)

　　(2) Whos opened the window? (窗戶還在開著)

　　Who opened the window? (與現在無關，窗戶可能已關上)

　　(3) Have you ever heard him sing?(他可能不愛唱歌)

　　Did you ever hear him sing?(你曾聽過他唱歌嗎?他可能是歌唱家)

　　(4) Have you ever heard of such a thing?(你聽過這種事嗎?)

　　Did you ever hear of such a thing?(這種事你聽說過嗎?這是一個修辭性問題，表

　　表示驚異。

　　(5) What have I done to make you so angry? (對方仍生氣)

　　What did I do to make you so angry? (暗示某一過去的時間，可能對方已不生

　　氣了。

　　(6) How has he done? (他這活干得怎么樣?強調結果)

　　How did he do it?(他是怎么干這活的?強調干活的方式)

　　(7) He has lived in NewYork for eight years．(他仍在紐約)

　　He lived in NewYork for eight years．(他可能不在紐約了)

　　(8) He has been called a thinker．(強調事實)

　　He was called a thinker．(他曾被譽為思想家。)

　　(9) Youve heard what I said．(你聽見我的話了。)

　　You heard what I said．(你是聽見我的話的。口氣嚴厲，具有感情色彩)

　　(10) Ive lost my pen．(筆還沒找到)

　　I lost my pen．(筆可能找到了)

　　(11) He has already been there．(曾去過那里)

　　He was already there．(當時在那里)

　　(12) Since I have been ill，my friend has visited me everyday. (生病還在延續)

　　Since I was ill，my friend has visited me everyday．(病已好了)

　　(13) Have you slept well?(暗示因疲倦休息后是否好些了)

　　Did you sleep well?(暗示睡得是否舒服，滿意)