| 比較過去時與現在完成時 | ||
1）過去時表示過去某時發生的動作或單純敘述過去的事情，強調動作；現在完成時為過去發生的，強調過去的事情對現在的影響，強調的是影響。 2）過去時常與具體的時間狀語連用，而現在完成時通常與模糊的時間狀語連用，或無時間狀語。 一般過去時的時間狀語: yesterday, last week，…ago, in1980, in October, just now, 具體的時間狀語 共同的時間狀語: this morning, tonight,this April, now, once，before, already, recently，lately 現在完成時的時間狀語 for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always, 不確定的時間狀語 3）現在完成時可表示持續到現在的動作或狀態，動詞一般是延續性的，如live, teach, learn, work, study, know. 過去時常用的非持續性動詞有come, go, leave, start, die, finish, become, get married等。 舉例： I saw this film yesterday. ?。◤娬{看的動作發生過了。） I have seen this film. ?。◤娬{對現在的影響，電影的內容已經知道了。） Why did you get up so early? ?。◤娬{起床的動作已發生過了。） Who hasn't handed in his paper? ?。◤娬{有卷子，可能為不公平競爭。） She has returned from Paris. 她已從巴黎回來了。 She returned yesterday. 她是昨天回來了。 He has been in the League for three years. (在團內的狀態可延續) He has been a League member for three years. (是團員的狀態可持續) He joined the League three years ago. ( 三年前入團，joined為短暫行為。) I have finished my homework now. ---Will somebody go and get Dr. White? ---He's already been sent for. 句子中如有過去時的時間副詞（如 yesterday, last, week, in 1960）時，不能使用現在完成時，要用過去時。 （錯）Tom has written a letter to his parents last night. （對）Tom wrote a letter to his parents last night. | ||
