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If引导的条件状语从句和虚拟语气

• 2020 年 12 月 04 日 • 阅读: 698 • 英语

If引导的条件状语从句

条件IF从句主句例句特别说明
Zero conditional 现在的真实条件句 (只需要了解)一般现在时一般现在时If you freeze water, it turns into ice. If I have time, I usually watch TV.用于普遍真理, 必然发生的事情或习惯动作
1st conditional 第一条件句 将来的真实条件句 (AEIM II U5)一般现在时 (*有时也可用现在进行时和现在完成时)一般将来时 (will+动词原型)If I have time, I will watch TV tonight. Please call me if you have time. You can call me if you have time.“主将从现”; 有时主句也可用祈使句(主祈从现)或情态动词(如can, must等)代替将来时态
2nd conditional 第二条件句 现在和将来的非真实条件句 (AEIM II U14)一般过去时 (did)would +动词原型 (should/could/ might do)If I had time, I would watch TV now/later on.if从句be动词通常用“were”; 注意情态动词使用中的区别
3rd conditional 第三条件句 过去的非真实条件句 (AEIM II U16)过去完成时 (had done)would have +过去分词(should/could/ might have done)If I had had time, I would have watched TV yesterday.区别(would/should/could/might have done)

注意:条件状语从句也可用when, unless(=if not)等连词连接, 注意区别。

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  1. 梦回高三::quyin:hematemesis::

    1. @季悠然::quyin:die::

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    “我们的征途是星辰大海”