【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《if引导的真实条件句和非真实条件句》,欢迎阅读!
![条件,真实,引导](/static/wddqxz/img/rand/big_25.jpg)
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If he___(study)harder, he would have passed the exam.
If he__(be) here, he would give me some advice If it__(be) fine tomorrow, I will go outing
判断if 引导的真实条件句和非真实条件句的方法:
1. 看主句中的时态,如果主句中有would,则前面if引导的是非真实条件句,如果主句中的时态是一般将来时,则前面if引导的从句是真实每件句,即“主将从现”。
2. 看句子的含义,真实条件句表示提出的假设完全可以成为现实,因此谓语动词用陈述语气。非真实条件句表示所提出的假设实现可能性极小或与事实相反,所以谓语动词用虚拟语气。
所以,你三个句子的答案为:
If he (had studied) harder, he would have passed the exam.
如果他努力学习,他就会通过考试了。(表示与过去事实相反)
If he (were) here, he would give me some advice.
如果他在这儿,他会给我一些意见的。(表示与现在事实相反)
If it (is) fine tomorrow, I will go outing.
如果明天天气好,我要外出游玩。(真实条件句)
语法讲解:
If引导的非真实条件句中谓语动词的形式如下表所示:
if从句 主句 对现在情况的假设 过去式(be动词用were) would (could, should, might) 十 动词原形
对过去情况的假设 had+过去分词 would (could, should, might) have 十 过去分词
对将来情况的假设 should /were to 十 动词原形 would (could, should, might) 十 动词原形
If LuXun were alive,how happy he would be to see the great achievements of New China!
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如果鲁迅还活着,看到新中国的伟大成就他会多么高兴啊!
If the doctor had been available,the child would have been saved.
如果当时有医生在,这个小孩就会得救了。
If he should change his mind,what should we do?
如果他一旦改变主意,我们怎么办呢?精品
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