小學六年級英語語法講解之比較since和for
英語的應用越來越廣泛了，我們必須好好來學習英語知識。對此小學頻道編輯為大家整理了小學六年級英語語法講解：比較since和for。詳情如下：
Since用來說明動作起始時間，for用來說明動作延續時間長度。
I have lived here for more than twenty years.
I have lived here since I was born.
My aunt has worked in aclinic since 1949.
Some new oil fields have beeno pened up since1976.
I have known XiaoLi since she was a little girl.
My brother has been in the Youth League for two years.
Ihavenotheardfrommyuncleforalongtime.
注意：并非有for作為時間狀語的句子都用現在完成時。
I worked here for more than twenty years.
(我現在已不在這里工作。)
I have worked here for many years.
(現在我仍在這里工作。)
小竅門： 當現在完成時+一段時間，這一結構中，我們用下面的公式轉化，很容易就能排除非延續動詞在完成時中的誤使。
1) (對)Tom has studied Russian for three years.
=Tom began to study Russian three years ago, and is still studying it now.
2) (錯)Harry has got married for six years.
=Harry began to get married six years ago, and is still getting married now.
顯然，第二句不對，它應改為Harry got married six years ago. 或Harry has been married for six years.
希望大家能夠認真閱讀這篇小學六年級英語語法講解：比較since和for，以便在英語學習上取得優異的成績。
【小學六年級英語語法講解之比較since和for】相關文章：
英語語法過去將來時的講解12-12
高中英語語法：就近原則講解技巧09-12
英語語法之因果關系11-11
小學英語語法大全11-16
小學英語語法-時態篇03-09
初中英語語法大全之表示告知他人的句型09-04
小學英語語法(合集15篇)06-13
小學英語語法知識點03-13
太極拳和詠春拳比較03-08
高爾夫技巧講解11-15