陕西省千阳县红山中学八年级英语下册 Lesson 25 Let’s Do an Experiment!导学案(无答案) 冀教版

Lesson 25 Let’s Do an Experiment!
【Learning aims】
New words: science, experiment, theory, fill, jar, upside, prove, observe scientific, method, force
New phrases: fill …with…, cover…with…, turn… upside down
right side up, I’m(not) sure (that)…
Ability goal: To use the Simple Present Tense.
To describe an experiment.
【Important difficulties in Learning】
1.Master the focus words “science, experiment, fill, prove，scientific，
method, ”and use them, then learn to do an experiment.
2. Some difficult sentences:
①I fill a jar with water.
②I cover the top with a piece of cardboard.
③I turn the jar upside down.
【Autonomous learning】
预习单词，完成句子。

1. Please (预测) what your future will be like.
2. I (观察) him speaking to himself when I arrived here yesterday.
3. Just give me a chance and I’ll (证明)it to you.
4. We can do it in a (科学的) method.
5.It is difficult to do (实验)on how people learn languages. 【Cooperation inquiry】
Discuss and answer questions
1. Do you like to do experiments?
2. What experiments have you done?
3. What experiment is Brian going to do?
4. What’s Danny’s theory about what will happen?
【Focus on knowledge Guidance】
1. I fill a jar with water. 我用水把瓶子装满。

fill …with… 用……装满……
be filled with 装满
The box gifts.
cover…with… 用……盖住……
I the top a piece of cardboard.
2. I turn the jar upside down. 我把广口瓶倒置。

upside down 的意思是“向下翻转过来”。

The painting is .图画颠倒了。

right side up 是“正面朝上”的意思
3. I think the floor will get wet.
get 在本句中用作系动词，表示变化，后跟形容词作表语。

The food is cold.饭菜快凉了。

与get相关的词组：
get along/on (well) with
与……和睦相处
get away from摆脱 get back 返回 get up 起身, 起床
get together 集合，聚会 get through 用电话联系 get to 到达
4. I’m sure the floor won’t get wet. 我确信地板不会湿。

be sure +that 从句表示“认为……一定……”。

而be not sure表示不确定。

I’m sure that .我确信我比他跑得快。

I'm not sure whether I've met him before.我不能确定以前是否见到过他。

5. We’ll do the experiment and observed what will happen.
observe 动词, “观察” observe sb. do/ doing sth.
She observed on the opposite side of the road.她看见一个人在马路对面走着。

【Expand extension】
How to do the experiment?
Let’s do an interesting experiment. First, I ___ a jar ___ a desk, ___ it ____ water, then _____the top ____ a piece of cardboard. When I ____the jar ______ _____, can you guess what will happen.
【Consolidation exercise】根据提示完成句子。

1. There are many t______ about the origin of life.
2.I was chosen to ______ the _________ (做实验) .
3. I’m not sure _______ (whether/that) he’ll be at school tomorrow. I heard that she was ill.
4. He p_____ his courage in action.
5. Please _____ the bottle ______ (装满) water.
6. He is _______ ______ _____ ______ (相处和睦) his neighbours.
7. Now he was dead, we could not _____ _____ ______ (摆脱) our sadness. 【Reflection】
小组评价教师评价。