【—語法since和for用法講解r】大家在學(xué)習(xí)英語時，有很多的詞表示同一個意思但是用法有很大的區(qū)別哦，今天老師就來為大家講解一下since和for的用法，希望對大家有所幫助。

　　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.

　　同學(xué)們，看看since和for的用法比較，大家有沒有清楚一點呀，多多看看哦。

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