您的位置:首页 > 英语语法 > 英语基础语法 > 资料详情
虚拟语气(第一章)
编辑:admin 时间:2012/10/7 20:42:00 来源:高中学习网

  虚拟语气用来表示说话人的主观愿望或假想,所说的是一个条件,不一定是事实,或与事实相反。
条件句可分为两类,一类为真实条件句,一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况,故采用虚拟语气。

1、真实条件句

真实条件句用于陈述语气,假设的情况可能发生,其中 if 是如果的意思。
时态关系
句型:条件从句+主句
一般现在时 shall/will + 动词原形
If he comes, he will bring his violin.
典型例题
The volleyball match will be put off if it ___.
A. will rain B. rains C. rained D. is rained
  答案 B 。真实条件句主句为将来时,从句用一般现在时。
注意:
1)在真实条件句中,主句不能用 be going to 表示将来,该用 shall, will.
( 错 ) If you leave now, you are never going to regret it.
( 对 ) If you leave now, you will never regret it.
2)表示真理时,主句谓语动词便不用 shall (will) + 动词原形,而直接用一般现在时的动词形式。

2、非真实条件句

1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a. 同现在事实相反的假设。
句型:条件从句+主句
一般过去时should( would) + 动词原形
If they were here, they would help you.
b. 表示于过去事实相反的假设。
句型:条件从句+主句     
过去完成时 should(would) have+ 过去分词
If she had worked harder, she would have succeeded.
The rice would not have been burnt if you had been more careful.
If my lawyer had been here last Saturday, he would have prevented me from going.
If he had come yesterday, I should / would have told him about it.
含义:He did not come yesterday, so I did not tell him about it.
If he had not been ill and missed many classes, he would have made greater progress.
含义:He was ill and missed many lessons, so he did not make greater progress.
c. 表示对将来的假想
句型:条件从句+主句
一般过去时should+ 动词原形
were+ 不定式;would + 动词原形 ;should+ 动词原形
If you succeeded, everything would be all right.
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.


  • 上一页
  • 1
  • 2
  • 下一页
  • 发表评论
    * 评论内容:
    * 用户名:匿名发表 *不选请在前面输入您的昵称
    * 验证码: 验证码,看不清楚?请点击刷新验证码 *请输入4位数的验证码
     
    发表评论须知:
    一、所发文章必须遵守《互联网电子公告服务管理规定》;
    二、严禁发布供求代理信息、公司介绍、产品信息等广告宣传信息;
    三、严禁恶意重复发帖;
    四、严禁对个人、实体、民族、国家等进行漫骂、污蔑、诽谤。
    名师视频辅导