Unit 4 Amazing Science. Topic 1 When was it invented?导学案

Unit 4 Topic 1 When was it invented 导学案
话题学习目标
1、重点词汇和短语：lock, inve ( http: / / www.21cnjy.com )ntion, crayon, thought, silly, balloon, gun, keyboard, mark, be made of, send ...into, some day, be used for, be made from, laugh at. Find out, as long as
2、句型及交际用语：(1) (2)—A ( http: / / www.21cnjy.com )model rocket! —It was made by me. (3)—What’s it made of —It’s made of metal. (4)I wish I could go into space some day. (5)I hope your dream will come true. (6)—What’s it used for —It’s used for locking the door. (7)—What’s the paper made from —It’s made from wood. (8)—Do you know when it was invented —It was invented in 1879. (9)It’s said that he invented more than two thousand things during his life. (10)The radio was invented by Guglielmo Marconi in 1895. (11)They were made in factories and invented by someone. (12)Inventing is interesting and exciting and everyone can be an inventor.
3、语法：一般过去时的被动语态
Section A
自学过程
一、在1a中找出下列短语，大声朗读所在的句子。
允许某人做 _____________ 玩电脑游戏______________ last night______________
be bad for __ ( http: / / www.21cnjy.com )__________ 在......花费(时间/金钱)_____________ too much time______________把......给某人看___________ a model rocket_________ 由某人做的___________ 由......制成(看得见原材料) ___________ be used for doing sth __________ 把......送入太空____________ learn about...__________ go into space___________ 有一天_________ come true__________
二、观察下列句子，复习Unit 3 Topic 1语法知识：被动语态。然后完成练习。
He speaks Eng ( http: / / www.21cnjy.com )lish. She speaks Chinese.
English is spo ( http: / / www.21cnjy.com )ken by him. Chinese is spoken by her.
练习：1. We water tr ( http: / / www.21cnjy.com )ees in our school every three days.(同义句)_________________________
2. Lots of children ( http: / / www.21cnjy.com ) visit the zoo on weekends.(同义句) ____________________________
3. A Journ ( http: / / www.21cnjy.com )ey to West ________ (show) on CCTV every summer.(翻译)_________________
三、观察P82 第2题的图片，根据example和搭档编对话。（注意be made of... 与 be made from...的区别）
A:___________________ A:___________________
B:___________________ B:___________________
A:___________________ A:___________________
B:___________________ B:___________________
computer desk / wood chopsticks/ bamboo
A:___________________ A:___________________
B:___________________ B:___________________
A:___________________ A:___________________
B:___________________ B:___________________
sweater /cotton watch /metal
小结：be made of 由某种物质做成(看得出原材料，物理变化过程)
be made from 由某种物质制成(看不出原材料，化学变化过程)
拓展：be made up of 由几部分组成 be made in+地点/ 时间 在某地/某时制造
be made by + 某人 由某人制造 be made into+物品 被制成......
四、听1a 录音，完成1b 。再听一遍，回答问题：Why is Jane unhappy Because_________
_____________________ . 和同伴一起表演1a对话，然后回答1c的问题。
1._______________________________ 2._______________________________
3._______________________________ 4._______________________________
五、语法学习：一般过去时的被动语态
结构：助动词(be的过去式was/were)+及物动词的过去分词
1. 肯定句式 ：主语+was /were+过去分词
2. 否定句式 ：主语+was/were + not+过去分词
3. 一般疑问句式： Was /Were+主语+过去分词
4. 特殊疑问句式：疑问词W/H+was/were+主语+过去分词
E.g. An e-mai ( http: / / www.21cnjy.com )l was sent to her friend by Jane yesterday. 译：_______________________
An e-mail wasn ( http: / / www.21cnjy.com )’t sent to her friend by Jane yesterday. 译：_______________________
Was an e-mail ( http: / / www.21cnjy.com )sent to her friend by Jane yesterday 译：_______________________
Who was the e-m ( http: / / www.21cnjy.com )ail sent to by Jane yesterday 译：_______________________
六、课文精讲点拨：
1. Because I was not a ( http: / / www.21cnjy.com )llowed to play computer games last night.译：_______________________
allow (v.) 允许 a ( http: / / www.21cnjy.com )llow sb. to do sth. 允许某人做某事 allow doing sth. 允许做某事
be allowed to do sth. 被允许做某事
2. It’s bad for you ( http: / / www.21cnjy.com )r health if you pend too much time on them. 译：_____________________
too much 既是形容词短语，也 ( http: / / www.21cnjy.com )是副词短语，所以既可以修饰名词也可以修饰动词。如：too much water太多的水； eat too much吃得太多 。修饰名词时名词应为不可数名词，可数名词要用too many修饰，并且用复数形式。 注意：与之相似的much too 常放在形容词或副词之前修饰形容词或副词。如： much too long太长， much too fast太快
3. It’s used for ( http: / / www.21cnjy.com )sending satellites or spaceships into space . 译：_______________________
be used for doing sth == be used to do sth 被用来做某事
拓展：be used as +工具 被当作......用 be used by+某人 被谁使用 如：
English is used ( http: / / www.21cnjy.com )as a foreign language in China. 译：__________________________
Computers are use ( http: / / www.21cnjy.com )d by some people as toys. 译：__________________________
used to do sth. 过去常做 be (或get) used to doing sth. 习惯于做
4. I hope your ( http: / / www.21cnjy.com ) dream will come e true 变成真实，实现 come在这里起着连系动词作用，类似的go 也有这种用法:Additives can stop foods going bad. 添加剂能防止食物变坏。
自学检测：一、用括号里所给单词的适当形式填空。
1. My teacher allows us _______ (play) football after school.
2. It’s a lock. It’s used for _______ (lock) the door.
3. The laptop __________ (develop) in Japan in 1895.
4. The kite is mine and it’s made by _______ ( I ) .
5. —How beautiful the pants are !
—Thank you ( http: / / www.21cnjy.com ). They _______( buy ) at Girldear(哥弟) clothes store yesterday.
二、句型转换。
1.My mother allows me to use her cellphone.(改为被动语态)
I _______ ________ _________ use my mother’s cellphone.
2.A rocket is used ( http: / / www.21cnjy.com )for launching satellites and spaceships. (就画线部分提问)
_______ ________ a rocket _______ ________
3.The digital camera was invented in 1975. (就划线部分提问)
_______ ________ the digital camera __________
4. Maybe he is an inventor. (改为同义句)
He ________ ________ an inventor.
归纳小结：
本节课主要学习的语法：“特殊疑问词+动词不定 ( http: / / www.21cnjy.com )式”结构和构词法。本课重点单词和短语有：_________________________________________________________________________
____________________________________________________________________等。
家庭作业： 1、完成《同步练测考》Section A 和《学英语》第10期Part I。
2、预习Section B, 从所学过的单词中找出它们的构词方法。