成考英语基本文法复习资料第四章(2)

来源:
江西成考网
发布日期
2007年09月14日

摘要:  第四章 完成式(Perfect Tense)   4§1 现在完成式(Present Perfect Tense)   完成式的形式是 verb to have + past participle,每一个动词,都有过去式和过去分词,以下就是一些例子:   原式   过去式   过去分词(past participle)   go went gone   come came come   see saw seen   do did done   watch watched watched   g

has washed his hands.

  He has left.

  He has already completed the report.

  The storm has arrived.

  I have taken the job.

  I have written the letters.

  I have not seen him since 1975.

  I have never seen this man before.

  什么情况之下要用现在完成式呢?

  首先假设我们有一件事,发生在过去,而一直延续到现在,就要用现在完成式,这种句子后面常有since或for。以下是这种情形的例子:

  (1)自从1963年,我一直在念英文。

  I have studied English since 1963.

  (2)自从1975年以后,我就住在这里。

  I have lived here since 1975.

  (3)自从我是一个小孩子,我就喜欢摇滚乐。

  I have loved rock and roll music since I was a child.

  (4)自从去年,我就从来没有见过他。

  Since last year, I have never seen him.

  (5)自从1950年以后,他就一直在此工作。

  He has worked here since 1950.

  (6)我认识他已经很久了。

  I have known him for a long time.

  (7)他练习网球已经四年了。

  He has already practiced tennis for (the past) four years.

  (8)我穿这件夹克很久了。

  I have worn this jacket for a very long time.

  (9)我开这辆汽车很久了。

  I have driven this car for a long time.

  (10)好久没有下雨了。

  It has not rained for a long time.

  2.使用现在完成式的另一情况是强调已经完成的事,比方说,你说“我已经写了那封信”,就可以用现在完成式,或者,你说“他已经完成了工作”。