八年级下英语教案Unit4
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课时31
Lesson25: Let’s Do an Experiment!
➢Step1：复习巩固、激情导入
复习：提问unit3重点词组和句型
导入：Do you like to do experiment? What experiment have you done?
➢Step2：出示目标、明确任务
1.牢记本课黑体词汇：science/experiment/fill/prove/scientific/method等；
2.能分角色表演对话；
3.背诵重点句子1-5，并灵活运用相关知识点。
➢Step3：自主学习、合作探究
任务一：限时5分钟，熟读所有词汇，牢记黑体词汇
任务二：熟读对话，把握其意，画出不理解处，同桌之间交流
任务三：背诵重点句子，并自学知识点，画出不理解处，同桌之间交流
1.I fill a jar with water.
2.I turn the jar upside down.
3.I'm sure the floor won't get wet.
4.We can prove who's right.
5.We'll do the experiment and observe what will happen.
➢Step4：师生互动、展示提升
互动一：单词记忆比赛
互动二：对话熟读接力赛
互动三：知识点展示大比拼
✩知识点一：I fill a jar with water.
fill...with...意为“用...装满... ”
be filled with...=be full of...意为“充满...”
fill in... 意为“填上...;填充...”
Eg: On hearing the news, her eyes are filled with tears.
They filled the hole with water.
Fill in the blanks.
✩知识点二： I turn the jar upside down.
Turn…upside down意为“把……翻转/倒过来”
upside down 意为“正面朝下”
right side up意为“正面朝上”
Eg: That picture is upside down.
You hold the book upside down.
✩知识点三：I'm sure the floor won't get wet.
be sure （that）从句,意为“肯定……，确定……”主句的主语必须是人
否定形式是be not sure+疑问词引导的从句.
Eg: Tom is sure that he will win the game.
Tom is not sure whether he can win the game.
I'm not sure when he'll come here.
✩知识点四：We can prove who's right.
prove是及物动词,意为“证明,证实”
常用于以下结构:prove sth.(to sb.);prove(to sb.)that...;prove...(to be)+adj/n.
Eg： The fact has proved the man's honesty to us all.
=The fact has proved to us all that the man is honest.
=The fact has proved the man (to be) honest.
prove也可以作不及物动词,意为吧“证明\表明(自己)是...”后跟形容词或名词.
Eg： My theory will prove right some day.
During the trip,he proved a man with a strong will.
✩知识点五： We'll do the experiment and observe what will happen.
(1)observe是动词,意为“观察”
observe sb. do sth.
observe sb.doing sth.
用法同see/watch/hear等
Eg: I observed her dance.
When I passed by the grass,I observed him walking.
（2）happen vi 意为“发生”
【固定短语】sth happens to sb（无被动语态）
Happen to do sth
Eg: What has happened to you？
I happened to meet an old friend yesterday.
➢Step5：巩固练习、检测验收
教学反思：
课时32
Lesson26: One Wet Danny?
➢Step1：复习巩固、激情导入
复习：提问Lesson25知识点1-5
导入：Why is Danny going to wear his swimsuit?
➢Step2：出示目标、明确任务
1.牢记本课黑体词汇：force等；
2.能分角色表演对话；
3.背诵重点句子1-4，并灵活运用相关知识点。
➢Step3：自主学习、合作探究