國小六年級英語語法
來源:文萃谷 8.5K
Since用來説明動作起始時間,for用來説明動作延續時間長度。
Ihavelivedhereformorethantwentyyears.
IhavelivedheresinceIwasborn..
Myaunthasworkedinaclinicsince1949.
Somenewoilfieldshavebeenopenedupsince1976.
IhaveknownXiaoLisinceshewasalittlegirl.
MybrotherhasbeenintheYouthLeaguefortwoyears.
Ihavenotheardfrommyuncleforalongtime.
注意:並非有for作為時間狀語的句子都用現在完成時。
Iworkedhereformorethantwentyyears.
(我現在已不在這裏工作。)
Ihaveworkedhereformanyyears.
(現在我仍在這裏工作。)
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)TomhasstudiedRussianforthreeyears.
=TombegantostudyRussianthreeyearsago,andisstillstudyingitnow.
2) (錯)Harryhasgotmarriedforsixyears.
=Harrybegantogetmarriedsixyearsago,andisstillgettingmarriednow.
顯然,第二句不對,它應改為Harrygotmarriedsixyearsago. 或Harryhasbeenmarriedforsixyears.