冀教版英语九年级上册Unit 5 第2课时教案与反思牛老师

第二课时Lesson 26: Keep the Candle Burning
知己知彼，百战不殆。

《孙子兵法·谋攻》
樱落学校曾泽平
重点单词holder n.支托物；持有者
shallow adj. 浅的
lighter n. 打火机；点火器
match n.火柴
v.相称；相配
examine v. 检查
重点短语keep...burning, 使……燃烧
use up 用光，耗尽
be made up of, 由……组成
one­fifth 五分之一
重点句子 1.Carefully put the jar over the candle
until the top of the jar rests on the
dish.
2.Because about one fifth of the air is
made up of oxygen, the water rises and
fills about one fifth of the jar.
教学难点学会分数的表达
环节1 新课导入
What’s this？(It’s a candle.)Yes，it’s a burning candle.We will have an interesting class.Can you guess what we will do in this class？There are some things that may be used in an experiment.Do you want to
know what will happen？Today we’ll learn Lesson 26：Keep the Candle Burning.
设计意图：利用带来的教具，凭着学生对科学强烈的求知欲和好奇心，学习本课的新词，并鼓励他们表述实验。

环节2
1.Have a discussion with the students about the two questions on the textbook.
2.Collect te answers from the students.
3.Ask the students to listen to the tape carefully.
4.Explain the meaning of the whole text sentence by sentence，help the students remember the main words and the main sentences.
5.Ask the students to read the text by thmselves.
6. Do the Exercise 1 and Exercise 2 on the page of 69.
7. Read the Project after class.
8.要点点拨
（1）.Keep the candle burning！让蜡烛燃烧！
keep... burning 使……燃烧。

keep sth.(sb.)doing使某物(某人)保持做某一动作状态
（2）use up用光，耗尽。

表示完全，彻底。

（3）one­fifth五分之一。

分数的表达：
分数由分子及分两部分构成。

用英语表达时，分子用基数形式，分母用序数词形式。

若分子为1时，则分母的序数词为单数形式；若分子大于1时，则分母的序数词用复数形式。

如：1/3，one third，三分之一；1/5，one fifth，五分之一；3/4，three fourths，四之三；2/5，twofifths，五分之二
设计意图：让学生能抓住文中重点词汇和句型，善于归纳。

Unit 5 Look into Science
第二课时 Lesson 26: Keep the Candle Burning
keep...burning use up
be made of
one­fifth .Carefully put the jar over the candle until the top of the jar rests on the dish.
2.Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar.
请完成本课对应训练！
【素材积累】
海明威和他的“硬汉形象”美国作家海明威是一个极具进取精神的硬汉子。

他曾尝试吃过蚯蚓、蜥蜴，摘墨西哥斗牛场亮过相，闯荡过非洲的原始森林，两次世界大战都上了战场。

第一次世界大战时，19岁的他见一意大利士兵负伤，便冒着奥军的炮火上去抢救，结果自己也被炸伤了腿，但他仍背着伤员顽强前进。

突然间，炮击停止，探照灯大亮，海明威终于回到阵地。

原来是他的英勇行为感动了奥军将领，下令放他过去。