2025秋外研版八上英语Unit 3 Understanding ideas

2025年11月920:29:29发布者:谷获仔 14 views 举报
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外研版八年级上册 新教材(讲义)

Unit 3 Make it happen!

重点短语

1. stand beside :站在…… 旁边

2. at a science fair :在科学展览会上

3. build sth. out of :用…… 建造某物

4. shake hands with :与…… 握手

5. be born without :生来没有……

6. what's worse :更糟糕的是

7. all the time :一直;总是

8. blow sb. away :使某人惊叹;使某人印象深刻

9. lend a hand to sb. :帮助某人

10. keep doing sth. :持续做某事;一直做某事

11. work on sth. :从事于某事;致力于某事

12. one after another :一个接一个地

13. hit on :想出;找到(尤指偶然地 )

14. make money from :从…… 赚钱

15. for free :免费

课文句子详解

原文

A helping hand

1 Easton LaChappelle, a 14 - year - old student, stood beside his work at a science fair. It was a

robotic arm. He built it out of plastic blocks and fishing line.

2 “Hello,” said a girl with an artificial arm, as she shook hands with Easton's work.

3 This was the first time Easton met Jenny. She was born without an arm. Her artificial arm was

just a simple hook, but it cost $80,000. What's worse, children like her grow quickly and need

new arms all the time.

4 “It blew me away! I built my arm for only $300,” thought Easton. “I must lend a hand to people

like her.”

5 After the fair, Easton's room became a lab. He stayed there all day. He always tried to improve

his work. For his 16th birthday, Easton got a 3 - D printer. And with it, he invented an artificial

arm. It was able to move with brain signals of the user. But it wasn't good enough yet: the arm

weighed 3.6 kilograms. It was too heavy for a child.

6 Easton kept working on it. He enjoyed fixing problems one after another. And finally he hit on

success at age 23. His design only weighed 0.5 kilograms and cost around $500!

7 Easton's invention has helped many children. He didn't want to make money from it. He

decided to post his design online... for free! People can download the design and make an

artificial arm with their own 3 - D printers!

8 What a helping hand!

译文

援手

1. 14 岁的学生伊斯顿 · 拉沙佩勒在一场科学展览会上站在自己的作品旁。那是一只机械手臂。

他用塑料积木和钓鱼线制作而成。

2. “ 你好。” 一个装着假肢的女孩一边说着,一边和伊斯顿的作品握手。

3. 这是伊斯顿第一次见到珍妮。她生来就没有手臂。她的假肢只是一个简单的钩子,但却

要花费 8 万美元。更糟糕的是,像她这样的孩子长得很快,总是需要新的假肢。

4. “ 这太让我震惊了!我做的手臂只花了 300 美元。” 伊斯顿心想,“我必须帮助像她这

样的人。”

5. 展览会结束后,伊斯顿的房间成了实验室。他整天待在那里。他总是努力改进自己的作

品。 16 岁生日时,伊斯顿得到了一台 3D 打印机。利用它,他发明了一种假肢。这种假肢

能够根据使用者的脑信号移动。但它还不够好:这只手臂重达 3.6 公斤,对孩子来说太重

了。

6. 伊斯顿继续钻研。他喜欢一个接一个地解决问题。终于, 23 岁时他获得了成功。他的设

计重量只有 0.5 公斤,成本约为 500 美元!

7. 伊斯顿的发明帮助了许多孩子。他不想从中赚钱。他决定把自己的设计发布到网上……

免费!人们可以下载这个设计,用自己的 3D 打印机制作假肢!

8. 真是援手啊!

句子详解

第一段

1. Easton LaChappelle, a 14 - year - old student, stood beside his work at a science fair.

句子结构成分: Easton LaChappelle 是主语, a 14 - year - old student 是同位语,对 Easton

LaChappelle 进行解释说明; stood 是谓语, beside his work 是地点状语, at a science fair

是地点状语,进一步说明具体场

:一 般过去 时 , 表示过去 发生的动作 。 考常考 般过去 时的时间 标志词

yesterday last week )以 词过去式 变化规则

短语 搭配 stand beside 站在…… 旁边 ; at a science fair 在科学展览会上 例如 We

stood beside the river last weekend. (上 周末 我们站在 边 ); Many students show their

inventions at a science fair. (许多学生在科学展览会上展 他们的发明 ) 。

2. It was a robotic arm.

句子结构成分: It 是主语, was a robotic arm 语 。

:一 般过去 时 。

3. He built it out of plastic blocks and fishing line.

句子结构成分: He 是主语, built 是谓语, it 语, out of plastic blocks and fishing line

方式 状语 。

:一 般过去 时 。

考考 点: build sth. out of sth. 表示 “用…… 建造某物” 类似 结构还有 make sth. out

of sth. We made a boat out of wood. (我们用木 做了一 艘船 ) 。

短语 搭配 build sth. out of 用…… 建造某物 。

1. “Hello,” said a girl with an artificial arm, as she shook hands with Easton's work.

句子结构成分:直接 语 “ Hello” 是简单问 语;主句中 a girl 是主语, with an artificial

arm 介词 短语作后 定语 修饰 a girl said 是谓语; as she shook hands with Easton's work

是时间状语从句, she 是主语, shook hands 是谓语, with Easton's work 语 。

:主句一 般过去 时,从句一 般过去 时 。

考考 点: as 引导 的时间状语从句, 强调两 个动作同时发生 ,与 when 可以指时间

点,也可以指时间段 ) while 强调 主句和从句的动作同时持续进行 )的 区别

短语 搭配 with an artificial arm 着假肢 ; shake hands with 与…… 握手 例如 The

boy with a book in his hand is my brother. (手里 着一本 的那个 孩是我 弟弟 ); We

should shake hands with guests politely. (我们 应该礼貌 地与 人握手 ) 。

1. This was the first time Easton met Jenny.

句子结构成分: This 是主语, was the first time 语, Easton met Jenny 是定语

从句, 修饰 the first time 关系词 that 省略 当先 the first time 时, 关系词常省

) 。

:主句一 般过去 时,从句一 般过去 时 。

考考 点: This/It was the first time (that) + 般过去 时 , 表示 “这是第一次做某事( 过去

发生 )” ; This/It is the first time (that) + 成时 , 表示 “这是第一次做某事

(到 在为 )” 。

2. She was born without an arm.

句子结构成分: She 是主语, was born 是谓语, without an arm 介词 短语作状语 。

:一 般过去 时 。

考考 点: be born 表示 “出生” , 用一 般过去

短语 搭配 be born without 生来没有…… 例如 The baby was born without a left hand.

(这个 婴儿 生来没有 手 ) 。

3. Her artificial arm was just a simple hook, but it cost $80,000.

句子结构成分: Her artificial arm 是主语, was a simple hook 语, just 副词

修饰表 语; but 转折连词 接第 个分句, it 是主语, cost 是谓语, $80,000

语 。

:一 般过去 时 。

考考 点: cost 的用 其过去式 和原 一样,主语 通常 是物 , 表示 “花费(多

)” , The book costs me 20 yuan. (这本 花了我 20 元 ) 。

4. What's worse, children like her grow quickly and need new arms all the time.

句子结构成分: What's worse 插入 语, 表递 进; children 是主语, like her 介词 短语作后

定语 修饰 children grow need 并列 谓语, quickly 副词修饰 grow new arms

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