公开课教案--虚拟语气

含山县职教中心2016-2017学年度第二学期

教师公开示范课教案

公开课教师：周静

公开课时间：2017年2月23日上午第二节课

公开课地点：高三计算机2班

Subjunctive Mood

虚拟语气专题复习

一．教学目标：虚拟语气是高考的重点，且难度较大。本次课程通过对虚拟语气知识点的复习讲解，总结概括，让学生知道虚拟语气是用来表示人的主观的愿望和假想，达到学生对知识点的熟练运用，在脑海中形成具有条理性的知识框架的目的。

二．教材分析：虚拟语气是高考英语重点和难点，掌握好虚拟语气的重要性对每个参加高考的学生不言而喻。这次课程是高三第一轮复习时对虚拟语气的再次讲解和梳理，全部的知识都经过了高度的总结合概括，均是高考考点。

三．学生特征分析：辅导的学生是高三年级，刻苦努力，理解能力较强，有一定的基础。基本知识掌握一般，且很多重要的知识点已经遗忘

四．教学重点难点：1、真实条件句和非真实条件句的用法。2、虚拟语气用在主语从句，表语从句，同位语从句，定语从句中的用法。3、情态动词+ have + done的用法。

五．教学过程

一．定义：虚拟语气是一种动词形式，表示说话人的一种愿望，假设，怀疑，猜测，建议等含义。虚拟语气所表示的含义不是客观存在的事实。

二．虚拟语气在非真实条件句中

1.概念

真实条件句：表示现实或可能变为现实的条件。

非真实条件句：表示非现实的，或不可能，或不大可能变为现实的条件。

e.g. ①I will go fishing if it doesn’t rain tomorrow.

②If I were a bird, I could fly in the sky.

e.g. ①If you had got up earlier,you could have caught the train.

②If he came tomorrow,we could ask him.

练习：

①If you ＿＿＿＿(take) my advice,you ＿＿＿＿＿＿(not fail) in the exams last term.

②If it ＿＿＿＿(rain) tomorrow,the sports meeting ＿＿＿＿＿＿(put off).

③If everyone ＿＿＿＿(know)first aid,many lives ＿＿＿＿＿＿(save).

3.重点：混合虚拟语气和含蓄虚拟语气以及虚拟语气的倒装

1)有些句子主句谓语和从句谓语表示的动作在时间上并不一致，这类句子称为“错综时间条件句”。

①If you had studied hard before,you would be a college student now.

②If he had n’t followed my advice,he wouldn’t do it much better like this. 2）含蓄条件句指句中没有明显的虚拟条件句，而是利用其它手段来暗示存在的虚拟条件，如but for,with,without,otherwise,but等。

①But for your help,we could n’t have finished the work.=

If it had not been for your help,……

②I might have given your more help,but I was too busy.

③Such a thing wouldn’t have happened elsewhere.

④I was ill that day.Otherwise,I would have taken part in the meeting.

3）如条件句中有were,had,should,可把if省略掉，把were,had,should提前，变为倒装句式。

e.g. If we had made a great effort,we might have succeeded.→

Had we made a great effort,we might have succeeded.

▲注意：若条件句的谓语动词是否定形式时，不能用动词的缩略形式。

e.g. If it weren’t for the expense,I would go abroad now.→

Were it not for the expense,I would go abroad now.

三．虚拟语气其它用法

1.用于宾语从句中

1）wish后的宾语从句用虚拟语气，表示一种不可能实现的愿望。谓语形式：过去式（宾语从句动作与wish同时）

had+done(宾语从句动作先于wish)

could/would/might+do（宾语从句动作后于wish）

e.g. ①I wish (that) I were a flying bird.

②I wish (that) I had met that film star yesterday.

③I wish he would try again.

2）省去主句的条件句常用if only引导，表示一种不可能实现的愿望。谓语形式：

谓语用过去式（与现在事实相反）

谓语用had done（与过去事实相反）

谓语用could/would/might+do（与将来事实相反）

e.g. ①If only he were here.

②If only the rain would stop.