牛津高中英语虚拟语气PPT优选课件

表示与现在事实相反的情况，从 句用一般过去时，主句用 “would/should/could/might + 动词原形”
80%
例句
If I were you, I would study harder.（如果我是你，我会ቤተ መጻሕፍቲ ባይዱ努 力学习。）
过去时条件句虚拟语气
基本结构
If + 主语 + had + 过去分词， 主语 + would/should/could/might + have + 过去分词
03
情态动词的疑问句形 式错误
在构成疑问句时，应将情态动词放在 句首，而不是将助动词“do”放在句 首。例如，“你能来吗？”应表达为 “Can you come?”，而不是“Do you can come?”。
THANK YOU
感谢聆听
虚拟语气在从句中的运用技巧
名词性从句中虚拟语气使用规则
虚拟语气在主语从句中的应用
当主语从句表达的是与现在事实相反的情况时，谓语动词用一般过去时。
虚拟语气在宾语从句中的应用
当宾语从句表达的是与现在事实相反的情况时，谓语动词用一般过去时或过去完成时。
虚拟语气在表语从句和同位语从句中的应用
当这些从句表达的是与现在事实相反的情况时，谓语动词用一般过去时。
定语从句中虚拟语气使用规则
虚拟语气在定语从句中的应用：当定语从句表达的是与现在事实 相反的情况时，谓语动词用一般过去时或过去完成时。
需要注意的是，定语从句中的虚拟语气通常出现在“as if”或 “as though”引导的从句中。
状语从句中虚拟语气使用规则
虚拟语气在条件状语从句中的应用
当条件状语从句表达的是与现在事实相反的情况时，谓语动词用一般过去时或过去完成 时。

should
Tips
Modal Verbs (情态动词）can be remembered like this:
妈， 我 受 苦！
Might would should could
+do/have done
Practice 1 练习
IF ALL WERE ONE
If all the seas
(be) one sea,
Farewell to the heroes!
Amazing May they rest in peace! people
Writing and Presentation
Situation 1 : Looking back to 2020, what are your regrets? And what should you have done to do it better? Situation 2 : In the past few months, China-US relations raised great concern around the world. If you were the newly-elected president Biden, how would you like to deal with the problem and maintain the world peace? Situation 3 : Who would you like to choose to be in 2021, and what would you do?
Boy: Will you marry me? Girl: I would marry you if you were the last
boy on the earth.

1.2.虚拟语气用于宾语从句 1.2.1.句型“…wish that…” 在wish后的that宾语从句中：1.如果表示对现在的愿望，从句谓语要使用过去时: （1）从句谓语动词如果是be，则用were形式。 （2）从句谓语动词如果是行为动词，则用过去时形式。--I wish I were a bird. 但愿我是只鸟儿。--I wish you didn’t talk like that. 但愿你没有那样说。
1.1.6.含蓄条件句
英语中有些句子从形式上看不包含条件从句，但在意义上却是非真实条件句，这类句子称为含蓄条件句，这样的句子可分为三类
1.省略整个条件句 --Such mistakes could have been avoided. (省略了if we had been more careful). 这样的错误本来是能够避免的。 --I should have caught the train. (省略了if I had left a little earlier) 我本应该赶上火车的。
2.如果表示对将来的愿望，从句谓语动词用 “would (could, might )+动词原形” 的形式。 --I wish you would do the favor for me. 但愿你会帮我这个忙。 --I wish I could speak several languages. 但愿我会说好几种语言。
1.1.2.和过去事实相反的非真实条件句
这类非真实条件句表示过去未发生的事情，和过去事实相反。比如：
--If I had left a little earlier ,I would have caught the train. 如果我早一点离开的话，我就会赶上火车了。--The man’s life might have been saved if he had been sent to a better hospital.如果把那个人送到一家更好的医院的话，他也许回被救活的

与将来事实相反虚拟：
大话西游
如果上天能够给我一个再来一次的机会， 我会对那个女孩子说三个字：我爱你。 如果非要在这份爱上加上一个期限，我希望是--一万年! If the God ________________________(give) me should give/were to give/gave another chance，I_________ (tell) the girl three would tell words, “ I love you.” If I ______(have to) set a to time limit to our love, It_________ had (be)10,000 years! would be
过去
If 从句的谓语形式 主句的谓语形式 would/could/should had done /might +have done
与过去事实相反虚拟：
hadn’t hit ( not hit) an iceberg, If Titanic ________ have sunk the unsinkable ship wouldn’t _______________ (not sink) into the ocean.
如果他早起，他就不会上学迟到。
If he had got up early, he would not have been late for school.（与过去事实反）
If I ________ had learnt (learn ) how to swim,
would not have been (be) trapped in I __________________ this island.（与过去事实相反）