内容正文:
虚拟语气小结
语气是英文中谓语动词的一种变化形式,用来表示说话者的意图和态度。虚拟语气表示所说的话只是一种主观的愿望、假想或建议等。它主要用于以下几种句式中。
1、 非真实条件句
从句的谓语
主句的谓语
与现在事实相反
过去时
Would/could/should/might do
与过去事实相反
过去完成时
Would/could/should/might have done
与将来事实相反
过去时
were to do
should do
Would/could/should/might do
1 If I were a bird, I would fly in the sky. (与现在事实相反)
2 If I had worked hard last year, I would have been admitted to the university. (与过去事实相反)
3 If it should rain tomorrow, we would stay at home. (与将来事实相反)
2、 错综时间条件句
有时在非真实条件句中,主句和从句中的谓语动词所表示的动作并不是同时发生的,这时动词的形式要按照各自的时间进行调整,这类句子就叫错综时间条件句。例如:
1 If you had taken my advice, you would be better now.
2 If I were you, I would have taken his advice.
3、 含蓄条件句
有时一个假设的情况并不用条件从句表示,而用其他方式来表示,这样的句子叫含蓄条件句。常用于这类结构的有without、or、otherwise、but for、in case、suppose等。例如:
1 Without water, fish would die.
2 But for your help, I couldn’t have made such great progress.
3 I would have taken part in the match, but I was busy that day.
4、 宾语从句
1. 在表示“建议、命令、要求”等动词后的宾语从句中,谓语动词要用“(should)+动词原形”。例如:
1 He insisted that we (should) make an apology to him.
2 They requested that the students (should) learn a second language.
2. wish后的宾语从句需要用虚拟语气。
wish that + 主语+had done (与过去事实相反)
wish that +主语 + did (were)(与现在事实相反)
wish that + 主语 + would/could do (与将来事实相反)
1 How I wish that I were an adult.
2 He wishes that he could become a scientist one day.
3 We wish that you had come to our New Year’s party.
5、 表语从句和同位语从句
主句中有suggestion、proposal、order、plan和idea等词时,表语从句或同位语从句用虚拟语气,谓语动词要用“(should)+动词原形”。例如:
1 My suggestion is that all of you (should) read loudly in the morning.
2 His proposal that they (should) challenge the other groups to a friendly competition is praised by the teacher.
6、 定语从句
It is / was (high/about) time that + 主语+ did /should do (should不可以省略)
1 It is high time that you should go to bed.
2 It is high time that we got down to work.
练习:
1. ----Do you have Betty’s phone number?
---- Yes. Otherwise, I ________(be) able to reach her yesterday.
2. If the new safety sys