教学目标 

Important vocabularies
Shake, while, sound, scientist, point, movement, fall off, for a while, for ever, a (large ) number of, cut off, stay up，plate, hit, bookstore.
Daily expressions:
Were you in ……?
Sure I was. I ll never forget that.
Very strange. It sounded like……
What happened next?
What was it like?
Useful phrases:
The population in and around San Francisco is now ten times more then it was in 1906.
The number of people who lost homes reached as many as 250000.
Grammar:
The usage of pronouns in the Attributive sentences.
Who/ whom/ which/ that……

 教学建议

能力训练：
运用所学的语言，围绕地震这个题材，开展听说写的活动；阅读课文“Earthquake，了解有关地震的基本知识，完成有关课文内容的练习。并进一步练习间接引语的用法。
师生互动活动：
Lesson 25: 口头练习，对话交际功能-----日常生活用语的练习。
Lesson 26---27: 听力和阅读相结合，理解全文的意思。
Lesson 28: 口头和笔头练习相结合，写一篇关于地震的文章。
教材分析
本单元对话引出地震这个话题。对话中提到了地震的时候的现象和人的感受。本单元的阅读课文是了解发生在San Francisco地区的严重地震场景和有关地震发生时的基本常识。同时在文章里有一些重要的语法知识，如定语从句的使用：A wide and busy road which was built like a bridge over another road fell onto the one below. etc.
重点知识讲解：
1.What does quake means , as in the word earthquake?
像 earthquake 这个词中的quake是什么意思？
As in the word earthquake 是个省略结构，完整的说法为：as it does in the word earthquake. as 在此为连词，表示“如“的意思。
It sounded like a train that was going under my house. 那声音听起来就像有一列火车在我的房子底下开过似的。
sound 为系动词，后接名词、介词短语做表语，意思是“听起来”。
Your idea sounds (like ) a good one.你的注意听起来不错。
What he said sounded like a fairy-tale.他所说的话听起来就像神话故事。
表示“听起来像什么”的时候，用sound like….。like 在此是介词表示“像”的意思。类似于sound的常用系动词还有：feel, taste, smell, look.
例如：
Cotton feels very soft. 棉花摸起来很柔软。
It looks like a beautiful picture. 那看上去就像一幅美丽的画。
2．I was in the kitchen cooking something and I felt the floor move. 我当时正在厨房里作饭，我觉得地板动了一下。
cooking something 在本句中为现在分词短语做伴随状语。
句中的move是省略了to 的不定式，做宾语补足语。动词feel的宾语补足语可以是动词原形，也可以是动词的ing形式或过去分词形式。
例如：
When I heard his words, I felt my heart beating faster.听了他的话，我感到心跳加快了。
He felt someone knock at the door. 他感到有人敲了一下门。
he boy felt his back patted by someone. 那个男孩子感到有人拍了他的脊背。
3． And then I watched all the glasses on the table fall off onto the floor. 后来我观察到桌子上所有玻璃杯子掉到了地板上。
辨析：fall off / fall down
fall off 表示“从。。。。上落下或掉下”。off为介词或副词。fall down的意思是“倒塌、掉下”，不强调落物的来处。
例如：
I saw him fall off his horse.我看到他从马上掉了下来。
Flowers fell off to the ground. 花儿凋谢了，落到了地上。
Autumn comes and leaves are falling off the trees. 秋天到了，落叶纷纷。
A stone fell down in the earthquake. 一块石头落了下来，砸中了他。
The old house fell down in the earthquake. 老房子在地震中倒塌了。
4．A great part of the city was destroyed and a large number of buildings were burnt.城市的大部分地区被摧毁，许许多多建筑物被火吞噬。
A number of 相当于many.意思为“许多”，后跟可数名词的复数形式。短语中的number前可以由large / small来修饰，构成a large / great / small number of 短语。
例如：
1）A number of people were killed in the traffic accident. 有许多人在那场车祸中丧生。
2）A large number of students went to s

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