Unit 4 Amazing Science Topic 1 Section D 学案（含答案）仁爱版九年级上册

Unit 4 Topic 1 Section D
【学习目标】
1.能知道一般现在时和一般过去时的被动语态的结构,用被动语态正确回答特殊疑问句。
2.能正确使用本话题的重点短语和句型。
3.能理解文章Where Are We 大意,并能正确地解决问题。
【预习导学】
一、生词速查
　　 n.标示;记号;符号→ v.做记号,做标记
二、短语速记
1.some day 　 　
2.come true 　 　
3.during one's life 　 　
4.guiding mark 　 　
5.as long as　 　
三、句子速译
1.I wish I could go into space some day.
______________________________________________________________
2.I hope your dream will come true.
______________________________________________________________
3.Using the stars, they could find out where they were and in which direction they were going.
______________________________________________________________
四、想一想
1.What is the key grammar in this topic
______________________________________________________________
2.What is mainly discussed in this topic
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【答案】
一、
mark
二、
1.有朝一日
2.实现
3.某人的一生
4.地标
5.只要
三、
1.我希望有朝一日我能进入太空。
2.我希望你的梦想能实现。
3.使用星星,他们能发现自己在哪里,并且知道他们正在朝哪个方向走去。
四、
1.The key grammar in this topic is the simple past passive voice.
2.The invention is mainly discussed in this topic.
【合作探究】
任务驱动一 被动语态巩固练习
根据要求完成任务
1.Guglielmo Marconi invented the radio in 1895.(改为被动语态)
______________________________________________________________
2.The digital camera was developed in the 1970s.(对画线部分提问)
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3.A rocket is used for sending satellites or spaceships into space.(对画线部分提问)
______________________________________________________________
4.We can use BDS to help us to find out where we are.(改为被动语态)
______________________________________________________________
5.John Baird invented the TV in 1926.(改为被动语态)
______________________________________________________________
任务驱动二 重点短语句型巩固练习
　　◎学法指导:1.看汉语意思;2.看其所担当的成分;3.注意大小写形式是否正确。
根据句意及汉语提示填空
1.　　 　　 　　(据说) she has helped thousands of homeless people.
2.Inventing is interesting and exciting and everyone 　　 　　(能成为) an inventor.
3.She wishes she could 　　 　　(进入) space some day.
4.Using BDS, we can 　　 　　(发现) where we are.
5.　　 　　 　　(只要) you help me, I will give you some delicious food.
任务驱动三 阅读理解任务
阅读文章Where Are We 选择正确选项
()1.What did the early explorers use as guiding marks
A.GPS.　　　　B.BDS.
C.The stars. D.The moon.
()2.What was the problem of using stars as the navigation (导航)
A.The stars were too small.
B.The stars could be seen at night.
C.The stars couldn't work well in the daytime.
D.The stars were too far away.
()3.What is GPS like
A.It is like a man-made star.
B.It is the same as BDS.
C.It is like a sheep.
D.It is like the shape of the earth.
()4.Which of the following is NOT true about GPS
A.We can use it at any time.
B.We can use it in any place.
C.We can use it in any weather.
D.We can't use it in winter.
()5.What does the phrase our planet refer to
A.The sun. B.The earth.
C.The moon. D.The stars.
【答案】
任务驱动一
1.The radio was invented by Guglielmo Marconi in 1895.
2.When was the digital camera developed
3.What is a rocket used for
4.BDS can be used to help us to find out where we are.
5.The TV was invented by John Baird in 1926.
任务驱动二
1.It's　said　that
2.can　be
3.go　into
4.find　out
5.As　long　as
任务驱动三
1~5　CCADB
【知识超市】
[命题点一]have been done的用法 　
●Today, the problem has been solved by the Global Positioning System(GPS).今天这个问题已经被全球定位系统解决了。
◎观察思考:1.The work has already been done by Jim.这份工作已经被Jim做完了。
2.Those difficult problems have been solved by them.那些难题已经被他们解决了。
3.The book has already been taken away.这本书已经被拿走了。
◎用法总结:1.have/has been done 意为“已经被做”,是现在完成时的被动语态形式。用法跟现在完成时态一致,只是表示被动形式。2.不及物动词及短语不能用被动语态,最常用的“三大发生(happen/occur/take place)”,“一个属于(belong to)”和 “一个组成(consist of)”没有被动语态形式。
对点自测
用所给单词的适当形式填空
1.Maria 　　(work) here for two months.
2.The room 　　(clean) up by Zhang Tao.
3.The apples 　　(eat) up by Tom and Jack.
【答案】
1.has worked
2.has been cleaned
3.have been eaten
[命题点二]关系代词that和help sb.do sth.的用法 　
●The GPS is a great invention that helps us explore our planet and discover where we are.GPS是一项很了不起的发明,这项发明帮助我们探索我们的星球和发现我们所在的地方。
◎观察思考:1.BDS is also a great invention that helps us explore our planet and discover where we are.BDS也是一项很了不起的发明,这项发明帮助我们探索我们的星球和发现我们所在的地方。
2.The man that often comes to visit our school is a big leader in our city.经常来我们学校参观的那个男人是我们市里的一位大领导。
3.I usually help my roommates sweep the floor.我经常帮助我的室友们拖地板。
◎用法总结:1.that 引导定语从句,that修饰的名词或代词叫先行词,先行词可以是人或物。2.help sb.(to) do sth.意为“帮助某人做某事”,也可以用help sb.with sth.。
对点自测
用所给单词的适当形式填空
1.She is a girl that 　　(like) going out to dance at night.
2.Her son often helps her 　　(do) some washing after school.
3.The TV set that 　　(look) very beautiful is too expensive for Sue to buy.
【答案】
1.likes
2.to do/do
3.looks
2