專門替中國人寫的英語語法4-2：現(xiàn)在完成進行式（Present Perfect Progressive Tense）

　　4-2現(xiàn)在完成進行式(Present Perfect Progressive Tense)

　　在上一節(jié)，我們知道，如果有一個行動，從過去發(fā)生后，就一直延續(xù)到現(xiàn)在，我們可以用現(xiàn)在完成式。舉例來說，以下的例子都應(yīng)該用現(xiàn)在完成式：

　　(1)自從1974年，我就在學(xué)校學(xué)英文。

　　Since 1974, I have studied English at school.

　　(2)自從我大學(xué)畢業(yè)以后，我就在這里工作。

　　Since I graduated from college, I have worked here.

　　以第一句話為例，假如我們要強調(diào)我一直在練習(xí)游泳，而且沒有間斷，我們可以用現(xiàn)在完成進行式(present perfect progressive tense)。

　　所謂現(xiàn)在完成進行式，形式：verb to have + been + present participle

　　verb to have 是為了完成式，been 和 present participle 都是為了進行式。

　　以下是現(xiàn)在完成進行式的例子：

　　I have been studying English since 1974.

　　I have been working here since I graduated from college.

　　I have been living here since I was a child.

　　He has been acting like a fool lately.(他最近一直在做傻事)

　　They have been dancing since seven o’clock.

　　It has been snowing since yesterday.

　　I have been taking music lessons since last year.

　　He has been drinking heavily since last year.(他去年起，就一直在酗酒)