英语虚拟语气(新人教版选修6)精品PPT课件

虚拟语气
虚拟语气在 在条件从句中
二、省略 if 的条件从句
当从句中有 were, had 或 should 时，可省略if ， 而把它们放在句首。
• If I were to meet him tomorrow, I should ask him about it. Were I to meet him tomorrow,…
3.如果我有一百万美元，我会买下这架飞机。
If I had one million dollars, I would buy the plane.
与过去事实相反的虚拟条件句
If +主 +had done sth, 主+would/should/could/might +动词完成式（have done）
与现在事实相反的虚拟条件句
If + 主 + did(were), 主+would/should/could/might +动词原形
1. 如果我是你，我会再试一次。
If I were you, I would try it again.
2.如果他有空，他会与你一起去的。
If he were free, he would go with you.
3.要是当时我和她结了婚的话，那我是很不幸的。
If I had married her, I would have been unhappy.
与将来事实相反的虚拟条件句(通常有时间状语) If + 主 + did(were to /should do), 主+would/should/
could/might +动词原形
How should we act towards people who have AIDS?
What a brave girl!
语气
祈使语气(The Imperative Mood)用 来表示请求，邀请，命令，警告或 劝告等。 Let me do it. Please keep quiet in the reading room.
虚拟语气
The Subjunctive Mood
语气
英语的动词一般可带有三种不同的语气： 陈述语气，祈使语气和虚拟语气。不同 的语气用动词的不同形式（有的还借助 句法形式）来表示。
百度文库 语气
陈述语气(The Indicative Mood)用来陈 述一个事实，或提出一个看法，有肯定， 否定，疑问或感叹等形式。 People get AIDS after having been infected with HIV. Her mother did not know that she had AIDS until after Xiaohua was born.
1.如果他明天来的话,我会告诉他这件事.
If he came here tomorrow, I would tell him about it. 2.If he were to come here tomorrow, I would tell him about it.
3.If he should come tomorrow,I would tell him about it.
虚拟语气
虚拟语气的概念
• 虚拟语气是一种特殊的动词形式，一 是用来表示说话人所说的话不是一个 事实，而是一种假设、猜测、怀疑等( 在条件从句中或让步状语从句中)；一 是表示说话人的愿望、要求、命令、 建议等 (在宾语从句、表语从句、同位 语从句)。
虚拟语气
虚拟语气在 在条件从句中
一、在条件从句中 (叫虚拟条件句)，表 示与事实相反的条件。分三种情况(以 do 为例)：
him. 3. (与过去事实相反)
4. 2.明天要是天气好的话，我来看你。 5. 6. If it were(were to be/should be) sunny tomorrow, I would
come to see you. 7. (与将来事实可能相反) 8. 3.假如我是你的话，我现在就走。 9. 10. If I were you, I would go now. 11. 12. (与现在事实相反，事实上我不可能是你)
If I were you, I would try it again.
Were I you, I would try it again.
If he had been there yesterday, he would have seen the film.
1.如果他努力学的话，他就通过这次考试。
If he had worked hard, he would have passed the examination.
2.如果他那时在那儿的话，他就能看到那部电影了。
If he had been there, he could have seen the film
Would / could / might / should +have done
Would / could / might / should + do
虚拟语气
虚拟语气在 在条件从句中
[例句] 1. 要是你早来几分钟的话，你就能见到他了。 2. If you had come a few minutes earlier, you would have met
• If he should fail in the experiment this time, he would try again. Should he fail in the experiment… If you had come a few minutes earlier, you would have met him. Had you come a few….
表示与事实 条件从句的谓语形 主句的谓语形式 情况相反 式
表示现在情 过去式(did)
况
(be常用 were)
表示过去情 过去完成式(had
况
+done)
表示将来情 况
①过去式 (did)(were) ②should + do ③were to do
Would / could / might / should +动词 原形(do)