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[動(dòng)詞的時(shí)態(tài)]比較since和for

所屬教程:小學(xué)英語(yǔ)語(yǔ)法

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  Since 用來(lái)說(shuō)明動(dòng)作起始時(shí)間,for用來(lái)說(shuō)明動(dòng)作延續(xù)時(shí)間長(zhǎng)度。例如:

  I have lived here for more than twenty years.我住在這兒二十多年了。

  I have lived here since I was born. 我從出生起就住在這兒了。

  注意:并非有for 作為時(shí)間狀語(yǔ)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。)

  注意:用句型轉(zhuǎn)換的方法,很容易排除非延續(xù)動(dòng)詞在有for/since結(jié)構(gòu)的完成時(shí)中的誤用。

  1)(對(duì)) 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(duì),它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.


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