八年级英语下册 Unit4 Lesson25教案 冀教版 .doc

冀教版英语八年级下Unit4 Lesson25教案
　　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：