Unit 6 When was it invented Section A 学案 （含解析）

Unit 6 When was it invented
Section A
学习目标
掌握本节生词、短语的表达与运用。
掌握单元语法
3. 通过句型解析，对课文内容有更深入的了解。
知识运用
1. invent
词性：________ 意思：________
invention名词，意为“发明(物);创造”
inventor 名词，意为“发明者，发明家
练习：He ________ the telephone in 1876.
2. electricity
词性：________ 意思：________
electric形容词，无比较等级，指“电的;电子的;带电的”
练习：Our city was without ________ last night.
3. with pleasure
意思：________
用于回答别人的请求，表示客气地接受或同意
my pleasure意为“别客气，不用谢”，用于回答别人的感谢
练习：-May I sit here
-Yes，_______.
4. by accident
意思：________
形容词为accidental“无意的;偶然的”。
It is no accident that...意为“......绝非偶然”
练习：I met her ________ in a crowded bus.
5. remain
词性：________ 意思：________
表示“仍然是(处于某种状态);保持不变”相当于keep。其后可接形容词、名词、分词或介词短语作表语
练习：He is in danger, but he ________ calm.
句型梳理
1. It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink.据说是一位叫作神农的中国统治者最早发现茶可以饮用
要点精析
“It is said that从句”是含有that从句的一种复合句，形式主语是it，that引
导的从句作真正的主语，意为“据说......”，相当于People say that...。
使用该句型时，that从句的谓语动词可根据需要用各种时态
例:tis said that they have won the game.据说他们已经赢得了那场比赛
Itis said that they will go abroad soon.据说，他们不久将要出国
2. WellI think the TV was invented after the car.哦，我认为电视在小汽车之后被发明
要点精析 1
这是一个主从复合句，think后面跟了一个宾语从句。因为主句用一般现在时，从句根据句意用一般过去时。
小贴士
在主从复合句中，如果主句是一般现在时，从句可根据实际情况选用时态，如果主句用了过去时态，那么从句也应该使用过去的某种时态(客观真理除外)
例: He said he would leave next week.他说下周他就离开
3. Even though many people now know about tea culture, the Chinese are
without doubt the ones who best understand the nature of tea. 即使现在很
多人都了解茶文化，但毫无疑问中国人才是最懂茶的本质的人
要点精析 1
without doubt意为“毫无疑问:的确”
例: It is without doubt that people pay more and more attention to their health
毫无疑问，人们越来越重视健康。
要点精析 2
who best understand the nature of tea是由who引导的定语从句，修饰前面的
theones，who在从句中充当主语
例:Ilike someone who can make melaugh.我喜欢能让我发笑的人
4. The earthquake happened all of a sudden...地震突然发生.....
要点精析
all of a sudden 意为“突然地”
例:
The girl began crying all of a sudden.这个女孩儿突然开始哭了起来
知识拓展
sudden adi.突然的;意外的
例: His sudden death made his family very sad
他的突然去世使他的家人很悲伤
suddenly adv.突然地
例: Suddenly he ran out of the house without a word.
突然，他一句话都没说就跑出了房子
语法讲解
1一般过去时的被动语态的构成
由“was/were+及物动词的过去分词”构成。被动语态的时态变化只改变be的
形式，过去分词部分不变。疑问式和否定式的变化也是如此
2被动语态的用法
(1)不知道或没有必要指出谁是动作的执行者时
例: The bridge was built last year.这座桥是去年建造的。
(2)当更加强调动作的承受者时，动作的执行者由by引导，置于谓语动词之后，不需要时可以省略。
例: The letter was written by him.这封信是他写的
(3)当动作的执行者是泛指时(如people，one等)，多用被动语态
例: These clothes are said to be very popular abroad
据说这些服装在国外很流行
练习：
1. Paper _________first _________about 2,000 years ago in China. A.is
A.creating
B.is; created
C.has; created
D.was; created
2. Football _________to our school subjects last year
A.is added
B.adds
C.was added
D.added
3.In order to make our hometown more beautiful, lots of trees _________ last year.
A. are planted B. have planted C. were planted D. planted
4.She _________to give a talk about how to save water
yesterday.
A. invite
B. invited
C. is invited
D.was invited
5. The poor girl_________by the unfriendly boys when she told her story.
A. laughed at
C.laughs at
D. is laughed
B. was laughed at
答案
知识运用
invent 2. electricity 3. with pleasure 4. by accident 5. remains
语法精讲
1.D本句谓语动词create和主语paper(纸)之间存在逻辑上的动宾关系，即主语是动作的承受者，故用被动语态，其构成为“be+动词的过去分词”，由此可排除AC两项。再由时间状语about2,000yearsago(大约2000年前)可知，本句用一般过去时，进而排除B项。故选D
2.C句意:去年足球被列入了我们的学校课程。主语football是add这一动作的承受者，句子应用被动语态。被动语态的结构是“be+动词的过去分词”，故排除B、D两项;由时间状语last year可知句子用一般过去时，故选C
3C句意:为了使我们的家乡更美丽，去年栽了很多树由last year可知是过去时态
由主语lots of trees与谓语动词之间的关系可知用被动语态，故选C。
4D句意为她昨天被邀请做一个关于如何节约用水的报告由yesterday可知用过
去时态，结合句意可知用被动语态，故选D。
5.B根据句意“当可怜的小女孩儿讲述她的故事时，她被一群不友好的男孩儿嘲笑”可知用被动语态;而when引导的时间状语用的过去时态，主句则用一般过去时的被动语态，故选B。
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