Unit 6 When was it invented?Section B (3a~Self Check) 学案 人教版九年级全一册（含答案）

Unit 6 Section B (3a~Self Check)
【学习目标】
1.复习本单元的重点单词、短语和基本句型。
2.复习一般过去时的被动语态的用法。能用本单元所学习的语法知识及语言材料,写一篇关于某一种发明的作文。
3.通过对话题的谈论和写作,提高观察力、想象力,增强热爱发明、科技创新的精神。
【预习导学】
一、短语速记(中英文互译)
1.　 　偶然;意外地
2.　 　发生;出现
3.without doubt 　 　
4.　 　突然;猛地
5.by mistake 　 　
6.divide...into 　 　
7.　 　钦佩;仰慕
8.have a point 　 　
9.　 　鼓励某人做某事
10.　 　不但……而且……
二、根据汉语提示完成下列句子,每空一词
1.——拉链是什么时候发明的
——它是在1893年被发明的。
—　 　　 　the zipper invented
—It 　 　 　 　 in 1893.
2.——茶是什么时候被带到韩国的
——它是在6、7世纪期间被带到韩国的。
—When 　 　 tea　 　　 　the Republic of Korea
—It 　 　 　 　　 　the Republic of Korea during the 6th and 7th centuries.
3.这支特殊的钢笔是由刘杰发明的。
This special pen 　 　 　 　　 　 Liu Jie.
4.很难断定是谁先想到这个主意的。
It's hard to tell who　 　 　 　 　 　 the idea first.
5.他们认为这个发明家是借用其他人的想法来创造自己的发明的。
They think that the inventor used 　 　 　 　 idea to create his or her invention.
【答案】
一、
1.by accident　2.take place　3.毫无疑问　4.all of a sudden　5.错误地;意外地　6.把……分成……　7.look up to　8.有道理　9.encourage sb. to do sth.
10.not only...but also...
二、
1.When　was　was　invented
2.was　brought　to　was　brought　to　3.was　invented　by　4.came　up　with　5.someone　else's
【合作探究】
任务驱动一 小组调查完成3a
在小组里调查小组成员的上学通行方式,或者其父母的上班通行方式,谈论这种通行方式有哪些不便,能不能想出一种发明来解决这些问题。例如:
A:How do you usually go to school
B:By bike/ By bus /By car.
A:What are the problems of going to school by bike/...
B:...
A:What can we do
B:We can invent...
A:What is it invented for
B:...
任务驱动二 写作训练
　　假如你发明的“飞行单车”在学校科技节中获奖,你被推荐去参加一个国际青少年科技展览。请用英语写一篇短文,介绍你的发明。
1.飞行单车外观:两个轮子,两只翅膀。
2.用途:行驶于地面和空中,可拍照,能对话。
3.特点:速度快,使用太阳能。
4.环保改进计划(1~2点)。
一、素材积累
【词汇】
1.wheel 轮子
2.solar power 太阳能
3.be used for /use...for...被用来……
4.a flying bike 飞行单车
5.a great invention一个伟大的发明
【开头句】
1.My invention is...
2.It is a... invention.
【中间句】
1....is / special because...
2....is / are made of / from / with / by / in...
3....is / are used for...
【结尾句】
1.I think.../I believe...What about your opinion
2.I will....
二、写作指导
1.根据题干可知,本文是一篇　 　。
2.文章应使用第　 　人称。
3.时态应以　 　时为主,语态应以　 　为主。
4.列提纲
飞行
单车
三、写作练习
　　◎学法指导:注意被动语态与主动语态的转换,检查被动语态句的人称、时态以及句子结构等是否正确。
任务驱动三 Self Check复习巩固
1.用所给词的适当形式填空,完成Self Check 1。
2.将句子改为被动语态,完成Self Check 2。
　　◎学法指导:主动语态变被动语态口诀:宾变主,主变宾,谓变be done,时不变,数格必须随着变。
【答案】
任务驱动二
二、
1.说明文　2.三　3.一般现在,一般过去,一般将来　被动语态,主动语态变换
三、
　　My invention is a flying bike. It is a special bike with two wheels and two wings. The flying bike can drive both on the ground and in the air, and it can be used to take photos. And people can talk with it.As a very special bike, it is fast and environmentally-friendly because it is driven by solar energy.
　　This is my flying bike, which is made by myself in my spare time. If it is made real, I will have two improvements. I will suggest the engineer use light irons of high quality to make the frame, and make the wheels as large as possible.
【知识超市】
[命题点一]
Someone stole my watch.有人偷了我的手表。(改为被动语态) 　
→My watch was stolen by someone.
◎观察思考:
1.They used five eggs to make this big cake. (改为被动语态)
→Five eggs were used to make this big cake.
2.When did they invent the personal computer (改为被动语态)
→When was the personal computer invented
◎用法总结:
主动语态变被动语态的方法:
1)将主动语态句中的宾语变为被动语态句中的主语,主动语态句中的主语变为被动语态句中介词by的宾语。
2)将主动语态句中的谓语动词变成:助动词be+该动词的过去分词,但时态不改变。
3)助动词be要与新的主语单、复数保持一致;若主语和宾语是人称代词时,“格”应作相应的变化。
口诀:宾变主,主变宾,谓变be done时不变,数格必须随着变。
特殊情况:
(1)含有双宾语的句子变被动语态
剖析:含双宾语的主动语态的句子变为被动语态时,常把那个指人的间接宾语变为被动语态的主语;也可把那个指物的直接宾语用作主语,但此时必须在间接宾语前加上介词 to或for。
口诀:如遇双宾语,一般变间宾。若把直宾变,to, for间宾连。
(2)感官动词和使役动词在主动句中其后的动词不定式不带to,但变被动句时必须加上to。
口诀:感/使动词真叫怪,to来to去记心怀,主动语态to离去,被动语态to回来。
对点自测
按要求完成句子
1.The workers make machines in this factory. (改为被动语态)
→　 　
2.My father bought me a bike. (改为被动语态)
→　 　(主语是人)
→　 　(主语是物)
3.He gave me a book. (改为被动语态)
→　 　(人作主语)
→　 　(物作主语)
4.The boss made her work for 16 hours a day. (改为被动语态)
→
【答案】
命题点　
对点自测
1.Machines are made by the workers in this factory.
2.I was bought a bike by my father.
A bike was bought for me by my father.
3.I was given a book by him.
A book was given to me by him.
4.She was made to work for 16 hours a day by her boss.
2