Learning about Language课堂实录

Period 2

Learning about Important language points 教学目标

1. Enable students to grasp the usages of such important new words and expressions 2. Get students to master the patterns ：

1. I’m sorry to interrupt you but how could they live here? P38 2. We have been excavating layers of ash almost six meters thick, which suggests that they might have kept the fire burning all winter. P38 3. Yes, indeed, as the botanical analyses have shown us, all the fields around here used to be part of a large shallow lake. P39 4. That’s why they are called hunters and gatherers. P39

教学方法

利用多媒体计算机、网络资源、自制音像等创设教学情景、问题情景，扩大

教学容量，增强教学的趣味性和时效性。

教学过程

Step1. Preparing lessons &self-study and exploring the problems Finish the tasks in the first period in time.

Step2.Finishing plan & asking questions Report the answers to the class and the teacher. Listen to the tape of the text and underline the new words in the text; Learn the new words and phrases after the teacher . Ask for help if necessary. Step3.Researching cooperatively& answering questions Task1. Get the Ss to learn the following language points: 1.Can you think of the alternatives we would use today?(P37)

你能想出我们现在的替代物品吗？

【词语探究】阅读下列句子,注意alternative的词性及意思。

5.It seems that they used the sharpened stone tools to cut up animals and remove their skin.(P38)看样子他们可能是用磨尖的石器来切割野兽并剥皮。

【词语探究】阅读下面的句子,注意cut up的用法。

(1)She cut up the meat for her little dog.(切碎)

(2)He seemed very cut up by his troubles.(使丧气)

(3)We have cut up the enemy ，s forces.(歼灭)

【词语归纳】

cut in插嘴，打断

cut off切断，阻断，使分离，使隔离

cut through穿过

cut down砍伐,缩短

cut out删掉，剪裁

【词语运用】选用上述短语填空。

(1)More and more trees have been__________ and this has caused serious pollution in this area.

(2)It is considered impolite to _____________when others are speaking.

(3)The mountains _____________them _____________ from the rest of the world.

(4)Let，s _____________the fish for some soup.

(5)He managed to _____________the crowd to catch up with his friends. 答案：(1)cut down (2)cut in(3)cut...off (4)cut up (5)cut throughStep4.Summing &chewing,

summarizing knowledge

Discuss the usages of the following similar words and finish the exercises in groups: 【近义词辨析】

1.alternative和alternate 【课本原句】Can you think of the alternative we would use today?(page37) alternative n& adj. “两者择一

（供替代的选择）；替代物; 两者择一的；供选择的”，与alternate是近义词。

【观察例句】

If you don’t like the school lunch, you have the alternative of bringing your own. 如果你不喜欢学校准备的午餐，你可以选择自己带饭。

We have no alternative but to go on.除了继续下去,我们别无选择。

There was no other alternative but to fight till the victory. 除了战斗到胜利,别无选择。 According to the weather forecast, there will be a week of alternate rain and sunshine. 根据天气预报,下礼拜时雨时晴。

She works on alternate days.她隔日工作。

【归纳总结】这几两个词都可作名词和形容词，其用法区别是：alternate表示“交替的，交错的，

隔一个的，替补的人或物”的意思；而alternative则强调“两者或两者以上中任选其一，供选择的”的意思。alternatively adv. 或者，二者择一地。常用结构：have no alternative but to do sth.只能做某事；除…..外别无选择。

【即学即用】请选用分别完成下列各句：

1.They have several _________ on their team. 2.The way was blocked, so we went by an _________ road. 【考试链接】单项填空

In this school, the students have three courses, and seven courses. A. required; alternative B. requiring; alternative C. required; alternate D. requiring; alternate 2.assume和suppose3．if only 和only if 【课本原句】If only she had looked ahead and planned better this year! 她今年要是早有预见，计划得更好些就好了！（page43）

【观察例句】If only she would pass the English examination！但愿她能通过英语考试！

Only if you study hard can you go to college.你只有努力学习才能上大学。

If only I were better looking. 要是我长得漂亮些就好了。(对现在的虚拟) If only she had lived a little longer! 要是她能活得再长一些，那该多好啊！（对过去的虚拟）

If only she would go with me! 她要是愿意和我一道去就好了! (对将来的虚拟) If only they were here now, we would be able to celebrate their wedding anniversary. 如果他们现在在这里，我们就能庆祝他们的结婚纪念日了。

【归纳总结】

①if only 表示“但愿，要是……就好了”，引导感叹句或状语从句，动词用虚拟

语气，表示愿望或未实现的条件。if only常常用来表达强烈的愿望或遗憾，因此，主要用在虚拟语气中，用以表达强烈的愿望或非真实条件。意为“但愿；要是……该多好啊”。

在if only这个短语中，中心词是从属连接词if, 而副词only只是加强if的语气的，因此，if only仅仅是if的一种强化形式，不仅能表达说话人的愿望，而且能表达条件。因此，它同if一样，也能引导条件状语从句。

②only if 表示“只有……才”，引导条件状语从句，为一般条件句，不用虚拟语气。若引导从句置于句首，则主句应用半倒装。 【即学即用】请选用分别完成下列各句：

1.他要是愿意和我一道去就好了。_______ he would go with me. 2.我只有找到了工作才有足够的钱上学。

_______ I get a job will I have enough money to go to school （上述几组近义词组的辨析、检测题及答案参见由王军龙主编，陕西师大出版社出版的《新课程高中英语词汇导学练》P230~231）

Step5.Testing in class & improving skills 请根据下列每小题后的提示选择出正确答案：

1. ----May I clean the room tomorrow? ----No, you have no______. You must do it now, for the guests will come at any moment. A. chance B. alternative C. way D. help 【解析】 alternative可能的选择，

选择对象

，故选 B。

2. He has made a ______offer---he will make it clear as soon as possible. A. tentativeB. clear C. sure D. certain 【解析】 tentative不确定性，

暂定的，

试探性的，故选 A。 3. I don’t want to _____you. Go on with your story.

A. stop B. finish C. end D. interrupt 【解析】interrupt vt 暂时中断或中止

，故选D。

4. It is generally _____that stress is caused by too much work. A. assumed假定，

设想B. arranged C. announced D. declared 【解析】assumed假定，

设想，故选 A。

5. ______the consequences, he did whatever he liked to and nobody could stop him. A. In case of B. Regardless of C. As a result of D. Because of 【解析】regardless of 不管，

不顾， regardless of consequences 不顾后果，故选 B。

6. I think we have_____time to get to the station. A.

many B. rich C. large D. ample 【解析】ample adj 足够的，

充分的（同enough），故选D。

7. Although I succeed now, I should always_____the style of hard struggle. A. preserve B. order C. praise D. follow 【解析】preserve保护，

保存，

保持，故选 A。

8. This is a way of living______to him. A. especial B. particular C. specific D. special 【解析】specific详细而精确的，

确切的，特定的，

具体的，故选C。

9. It was only later that we realized the true ____of his remark. A. significance B. way C. approach D. method 【解析】significance 意义，

含义； way 方式； approach 途径

；method 方法

，故选A。 10. Don’t worry. We’ll get the money back ______. A. occasionally B. exactly C. conveniently D. somehow 【解析】somehow adv 以……方式，不知怎么地，故选D。

Step6. Assessment & Homework 1.

Finish the exercises at Page 40; 2.Read the new words and the text after class. 3.Find and underline all the sentences including the Present Perfect Continuous Tense in the text.