Grammar and usage(2): Unreal conditions教学创新设计

M6 U3 Grammar and usage (2) -----Unreal conditions Teaching aims：

After Class，students will be able to know: 1.

what subjective mood is; 2.

how many kinds of unreal conditions and how to apply them to exercise.

Teaching important and difficult points: 1. learn to furtherly understand what subjective mood is. 2. how to apply different kinds of subjective mood to the exercise.

Teaching procedures: Step1 lead-in 1. If l were you, I should study English harder．

2. Had I known his telephone number, I would have called him. 3. If it should \were to rain, we would call off the match. 4. If I hadn’t stood under the ladder to catch you when you fell, you wouldn’t be smiling now. 5. I wish every family had a house of their own. 6. Look at the terrible situation I am in! If only I had followed your advice. 7. We did not know his telephone number; otherwise we would have telephoned him. (design aims: 通过以上句子想让学生进一步认识虚拟语气的表达方式，加强语感。) Step2 what is subjective mood 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)。

（design aims: 通过虚拟语气的概念的再复习让学生能在阅读时更好地理解虚拟语气的句子。）

Step3

if 型虚拟语气

1. If I had known his telephone number, I would have called him.

2. If l were you, I should study English harder．

3. If it rained/should /were to rain, we would call off the match.

虚拟条件句

主句

主语+ 与过去事实相反的假If+ 设

与现在事实相反的假If+ 设

主语＋

与将来事实相反的假1、If+主语+动词过去式

设

2、

3、

主语＋

（design aims；

本步骤旨在强化学生对于虚拟语气基本公式的再回忆。理解记住此公式是学好虚拟语气的关键。）

注意点一：

在条件句中，可省略________，把________________提到句首，变为______句式．

If it were not for his help, I wouldn’t have finished the task. ----Were it not for his help, I wouldn’t have finished the task. 注意：若省略的条件句中的谓语动词是否定式，不能用动词的缩略形式，要把not放在后面．

注意点二：

1. If you had followed my advice, you would be better now.

2. If you had studied hard before, you would be a college student now. 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，被称为：错综时间条件句“，动词的形式要根据它所表示的时间作出相应的调整．

（2016）27. If it _________ for his invitation the other day, I should not be here now. A. had not been

B. should not be

C. were not to be

D. should not have been （design aims:

此步骤是第一课时没讲到的，现在强调基本公式的变形及它的考点，

要求学生灵活运用。）

Step 4 含蓄条件句

1. I was ill that day. Otherwise, I would have taken part in the sports meet.（副词）

2. He telephoned to inform me of your birthday, or I would have known nothing about it.（连词）

3. I might have given you more help, but I was too busy.（连词）

4. Everything taken into consideration, they would have raised their output quickly.（独立主格）

(通过例句的展示让学生发现和找出它们与if型虚拟语气的区别和自身的特点。) 有时为了表达的需要，在虚拟语气中并不是总是出现if引导的条件句，而是通过其他手段来代替条件句。

相关练习

I would buy the book, but I have not enough money. I _____________________the book, but I didn’t have enough money. I haven’t enough money, otherwise I would buy the book. I __________enough money, otherwise I would have bought the book. 1. We did not know his telephone number; otherwise we ________him. A . would have telephoned B. must have telephoned

C. would telephoned

D. had telephoned 2. He must have had an accident or he ___then. A. would have been here B.

had to be here

C.

should be here

D. would be here