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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:8610
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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. | | | | |
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