【since和for的語法比較】，初中的同學(xué)們，英語學(xué)科可是很重要的哦，趕緊來看看初中網(wǎng)給大家?guī)淼挠⒄Z語法吧。
比較since和for
Since 用來說明動作起始時間，for用來說明動作延續(xù)時間長度。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 作為時間狀語的句子都用現(xiàn)在完成時。
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)動詞在有for/since結(jié)構(gòu)的完成時中的誤用。
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(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
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