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    专门替中国人写的英语语法书!



    作者:龙为行客 阅读次数:8469


     
     
    grow grew grown
    sell sold sold
    ride rode ridden
    steal stole stolen
    break broke broken
    walk walked walked
    read read read
    sing sang sung
    work worked worked
    以下的句子都是用了现在完成式:
    I have read this book.
    I have seen the movie.
    I have lived here since 1973.
    I have studied English for a long time.
    He 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?
    1. 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〞。以下是这类的例子:
    (1)我已经写了这封信。
    I have already written the letter.
    (2)他已经完成了工作。
    He has already completed the work.
    (3)我已经测试了这个程序。
    I have already tested the program.
    (4)我已经收到了你的信。
    I have already received your letter.
    (5)他已搬到了一个较大的房子。
    He has already moved to a bigger house.
    (6)虽然他很年轻,但他已写了三本小说。
    Although he is young, he has already written three novels.