音标-专门替中国人写的英语语法书!

（7）我打了二次电话给他，他都没有回答。
I called him twice, he has never answered.
3.现在完成式用来表示一种经验，举例来说，〝我曾经到过美国〞、〝我曾见过李总统〞、〝我有生以来没有跳过舞〞，这些都应该用现在完成式，例如：
（1）我曾经到过美国。
I have been to America.
（2）我曾见过李总统。
I have seen President Lee.
（3）我有生以来没有跳过舞。
I have never danced in my life.
（4）我看过〝双城记〞。
I have read The Tale of Two Cities.
（5）他曾吃过这种冰淇淋。
He has tasted this kind of ice cream.
（6）我未曾见过雪。
I have never seen snow.
（7）你曾见过雪吗？
Have you ever seen snow?
（8）你登过玉山吗？
Have you ever climbed Jade Mountain？
4.现在完成式可以用来表示一件过去常发生的事：
（1）今年我国已有二次台风。
We have already had two typhoons so far this year.
（2）他今年已发表了三篇论文。
He has already published three papers this year.
（3）过去一年，我看了三次〝铁达尼号〞。
In the past year, I have seen The Titanic three times.
对读者而言，最重要的是〝现在完成式〞和〝过去式〞不同究竟在那里？最重要的不同在于，一旦在句子中讲一件过去发生的事，而且指定特定的时间，就一定要用〝过去式〞，而不能用〝现在完成式〞。比方说，〝我曾经看过「铁达尼号」〞，可以用现在完成式，因为这句话没有指明任何特定的时间，假如说，〝我昨天晚上去看「铁达尼号」〞，就一定用过去式，读者不妨看看以下的比较：
（a）I went to America last year.
I have been to America.
（b）I saw The Titanic last year.
I have seen The Titanic twice.
（c）I finished my homework late last night.
I have finally finished my homework.
（d）I studied English when I was a small child.
I have studied English since I was a child.
（e）I went to church yesterday.
I have never been to church.
以下的句子是错的，请特别注意：
＊（1）I have seen the movie last year.
＊（2）I have never been to America last year.
＊（3）He has never finished his work last night.
现在完成式常和since、for、already、never、ever等字一起使用，以下都是这类的例子：
（1）I have already had dinner.
（2）Since this summer began, we have already had two storms.
（3）It has not rained for a long time.
（4）I have never talked to this man before.
（5）I have never met your father.
（6）Have you ever been to America?
（7）He has already won three awards.
（8）I have stayed here since June.
Never 和 ever 也常是我们弄不清楚如何使用的字，一般说来， never 有否定的意思，ever则只有在问句中才会出现。
【练习十一】
将以下句子译成英文，全部用现在完成式：
1.自从1980年，我就每天早上游泳。
2.我已收到了你的信。
3.我从未去过美国。

专门替中国人写的英语语法书!

作者:龙为行客 阅读次数:9679

作者:龙为行客阅读次数:9679