比較since和for
2007-01-01 00:00
11.12 比較since和for | ||
? | Since 用來說明動(dòng)作起始時(shí)間,for用來說明動(dòng)作延續(xù)時(shí)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 a clinic since 1949. Some new oilfields have been opened up since 1976. I have known Xiao Li since she was a little girl. My brother has been in the Youth League for two years. I have not heard from my uncle for a long time. 注意:并非有for 作為時(shí)間狀語的句子都用現(xiàn)在完成時(shí)。 I worked here for more than twenty years. (我現(xiàn)在已不在這里工作。) I have worked here for many years. (現(xiàn)在我仍在這里工作。) 小竅門: 當(dāng)現(xiàn)在完成時(shí)+一段時(shí)間,這一結(jié)構(gòu)中,我們用下面的公式轉(zhuǎn)化,很容易就能排除非延續(xù)動(dòng)詞在完成時(shí)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(cuò)) 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(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years. |