首页 | 在线学习 | 经典教程 | 慢速英语 | 资源下载 | 英语社区 | 站内联系
您现在的位置: 快乐英语 >> 综合英语 >> 英语语法 >> 正文
Google
 

语 法 结 构- 情 态 动 词
文章来源:本站原创 | 发布时间:2005-7-12 6:55:52

[D] must be

2) John’s score on the test is the highest in the class;

[A] he should study last night
[B] he should have studied last night
[C] he must have studied last night
[D] he must had to study last night

3) After searching [A] for evidence in the house,the police concluded [B] that the thief must have come in [C] through the window and stole [D] the silver while the family was asleep.

二、may (might)+have+ED分词:用于肯定句和否定句,表示对已发生事情的不肯定的推测,相当于“可能,大概,”其中might较may 语气更弱,把握更小

She might have gone to see her doctor last week, but I am not sure.上星期或许她去看医生了,但我不敢肯定。

Don’t worry, your husband may not have been hurt seriously. 别急,你丈夫也许伤得不厉害。

三、should(ought to)+have+ED分词:肯定句表示过去本应发生的事却没有发生;否定句表示已发生了本不该发生的事。前者可译为“本应,”后者为“本不该”

You should have apologized to her for not soon replying to the letter. 你本应向她道歉,说明为什么没能及时回信。(可你没这么做)

4) You yesterday if you were really serious about your work.

[A] ought to come
[B] ought to be coming
[C] ought to have come
[D] ought have come

四、can(not) +have+ED分词

He is an hour late —— He can have been delayed by fog. Of course,that’s a possibility.他迟到了1小时,可能因为大雾而耽搁了。当然这只是可能性问题。

The poem can not have been written by her since she was only five years old then.这诗不可能是她写的,因为她那时才5岁。

五、“could+have+ED分词”有时用于表示过去的时间,说明某事可能或不可能已发生;有时可表示过去本来可以做某事,但却未做

I simply can’t understand how he could have made such a mistake. 我简直不明白他怎么会犯那样的错误。

He walked there,but he could have taken a taxi. 他走着去了,可当时完全可以坐出租。

“couldn’t+have+ED分词”还表示无论如何也不可能或没有做到

I couldn’t have called you. I wasn’t near a telephone. 反正我也不可能给你打电话,我附近没有电话。

5) “We didn’t see him at the lecture yesterday.”“He it.”

[A] mustn’t attended

上一页  [1] [2] [3] [4] 下一页

文章录入:maxgo    责任编辑:maxgo 

  • 上一篇文章:

  • 下一篇文章:

  • 所有文章将尽最大可能注名作者和来源,若有疏漏或版权问题,请指正。
    站内独立翻译的文章,如网络转载必须注名译者和快乐英语网。
    所有文章纯属为方便大家在线学习交流。
    阅读中若有什么问题,欢迎反馈到我们的虚拟社区大家一起解决。

    英语学习如逆水行舟,不进则退。坚持每天学习,是学好英语的关键。

    打印此文】【回到顶部】【关闭窗口

    相关文章
    语 法 结 构-- 从 句
    语 法 结 构--倒 装 句
    语 法 结 构--前后呼应
    连 接 词
    形容词和副词
    代词
    语 法 结 构 - 不定式、-i
    语 法 结 构 -ed分词
    语 法 结 构---- -ing分词
    动词不定式
    版权所有 Copyright© 2004-2008 快乐英语