一、教法建议

    James Cook(1728-1779)是英国海军上校和航海家，太平洋和南极海洋的探险家。1768年英国皇家学会与海军部组织太平洋首次科学考察，Cook被任命为考察队指挥官。其任务是护送学会科学家到Tahiti岛观察金星凌日的情况。该任务完成后，考察船去寻找南方大陆，发现新西兰，并绘制出海图。1770年4月，考察船到达Australia东南海岸，沿海北上成功地驶过昆士兰的大堡礁，返船回国，结束了第一次太平洋的考察。Cook船长数次深入太平洋和南极考察，在探索新地，航海，测绘海图和航海卫生等方面取得了卓著的成就。

【抛砖引玉】

    建议本单元利用填图的方法帮助学生掌握有关地名，然后在教师的引导下结合课文内容通过讨论的方式熟悉船长和他的探险队航海的路线。直观的方式不仅可以帮助学生减轻阅读中新词多（主要是地名多）的困难，而且有助与学生更好的理解课文。

可分以下步骤进行：

⒈ 在黑板上划一个简图（与书中同）。

⒉ 组织学生看书中图，并把书中图上的地理名词添在黑板图的相应位置上。

⒊ 阅读课文，讨论航海路线，并划在黑板图上（可请一学生完成）。

⒋ 教师指导学生进行看图说话训练，同时教师可在黑板上写出重点单词和词组。

⒌ 朗读课文指导说明文的朗读技巧。

⒍ 开发运用所学的重点单词和词组。

⒎ 复述课文。

【指点迷津】

本单元重点知识：

a)本单元重点单词：

※defend v. to protect from harm /attack; make safe 保卫，防御，保护

  To defend their country, many young people of that village joined the army.

  为了保卫祖国，那个村子里的很多年轻人参军入伍。

  It is the duty of every citizen to defend his country, when it is attacked by the enemy.

  保卫祖国，抗击敌人，是每个公民的责任。

※seize v. take hold of suddenly and by force 抓住，夺取，占领

  The policeman seized the thief by the collar, and threw him into the police car.

  警察一把揪住小偷的衣领，把他扔进警车。

  The PLA men seized the city in a sudden night attack.

  解放军突然夜袭，占领了那个城市。

※exist v. to be; to have life 存在，生存

  Does life exist on other planets?

  别的星球上存在生命吗？

  Don’t believe him. Such a thing doesn’t exist.

  不要相信他的话，这样的事根本不存在。

※map v. to make a map of; show on a map绘制……的地图，勘测

  The explorer mapped the island they had discovered.

  探险家把他们发现的岛屿地图绘制出来。

  Cook was the first to map the east coast of Australia.

  库克是第一个把澳大利亚东岸地图绘制出来的人。

※tear v. to break by pulling apart撕开，撕裂

  As soon as the postman passed her the letter, Mary tore yt open.

  马莉从邮递员手中一接过信，就把它撕开了。

※set v.放，置，摆，调节，指（日月）落了……  它是个多义词，构成的词组也较多，词

  组也一词多义；要注意学习与区别。

  It will be cooler when the sun has set (is set ).

  太阳落山时就会凉快些。

  He set the ladder against the wall.

  他把梯子靠墙放。

  Please set (lay )the table for dinner.

  请把桌子摆好，准备吃饭。

  The newspaper article set me thinking.

  这份报子引起我的思考。

  I set my watch by the time signal on the radio.

  我根据电台的信号，对手表。

  The teacher set very difficult questions for the exam.

  那个教师给考试出了些很难的题。

  注意：set的主要词组有：

※set off, set out (to begin a journey )出发，后接on the journey, trip,或for a place, /sth.

※set out (to intend to do )后接to do意为“着手”，“打算”

※set up (raise, build )竖立，建立，创立

※set up home (to start one’s own home )建立家园

※set…free 释放，set fire on /to（在）……放火

※set sail起航

※set off (to cause explode )引起爆炸

b)本单元重点词组：

fall ill /asleep患寎，/入睡

pass by 经过

in charge of 主管，负责

in search of 寻找

at sea在海上；在航海

take an interest in 对……感兴趣；

take …by surprise 使……吃惊；出奇兵攻占

c)本单元重要句型：

be worth doing 值得做……

His suggestion is worth considering.

Is the exhibition worth visiting?

以上单词和词组可通过听对话录音，教师介绍过程中呈现，然后用问答讨论课文内容等方式再现以上单词和词组加深理解词义，掌握用法，最后用句型转换或补全句子等到方法巩固，开发运用。如：以“interest”一词为例：

呈现：Cook was interested in mathematics.

再现：Cook took an interest in mathematics.

开发：用interest 的适当形式完成下列各句：

⒈I found something _________ in today’s paper.

⒉The boy was ________ in drawing pictures.

⒊When he was a boy, Tom took an ________ in physics.

⒋This newly-translated story-book _______ lots of children.

(⒈interesting⒉interested  ⒊interest   ⒋interests )

二、学海导航

【学法指要】

本单元应掌握的难点知识:

同义词辨析raise 与rise;

raise 与rise

raise  是个多义词。

主要有： to lift up举起，抬起，增加，提高

             to produce, or cause to grow饲养，抚养，种植

             to get or bring together筹集

She raised her finger to her lips as a sign for silence.

她竖起手指，举到唇边，示意要安静。

The wind raised the fallen leaves from the ground.

风把落叶从地上卷了起来。

The manager said he would raise your pay.

经理说他要给你长工资。

He raised the children by himself；his wife died years ago.

是他一手把孩子们抚养成人的。他妻子几年前就去世了。

His wife raised the money by selling her jewelry.

他妻子卖了首饰才把钱筹够了。

rise是不及物动词。作起身讲时是get up和stand up的正式用语。

I used to like seeing the sun rise.

The old man rose from his seat.

The book has risen in value.

注意：raise作名词时，意为：增加，加薪（用于美国英语，相当于英国英语的rise）

lift作名词时，意为：升，电梯，搭便车

rise作名词时，是上升，升起，还可指“数量，价值，程度”的增加，上涨。

They demanded a raise from the company.

We got a lift part of the way in a truck.

You had better take the lift to the tenth floor.

【妙文赏析】

The modern sailing was developed by a man who never went to sea. He was prince (王子)Henry of Portugal(葡萄牙),the young son of Portuguese King and an English princess (公主).

Prince Henry lived in the 15th century. As a boy, he loved the sea very much. He wanted to improve the design of s

[1] [2] 下一页