外研版 (2021)拓展模块Unit 1 A Small Change Can Solve the Problems of Many图文ppt课件

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Think abut the queatins.
Arund the Wrld
What d yu think is the mst useful inventin in yur life?
D yu knw wh invented it?
Guess their names and hw they were invented
pressure-sensitive adhesive
The zip has becme s cmmn that we almst take it fr granted. Whitcmb L. Judsn frm Chicag is believed t be the “Inventr f the Zip”, but it was actually Giden Sundback wh designed the mdern zip. Tday the zips prduced each year are lng enugh t stretch arund the Earth many times!
拉链如此普遍以至于我们几乎习以为常。来自芝加哥的惠特科姆·L·贾德森被认为是拉链的发明者，但事实上是吉迪恩·桑德巴克设计了现代拉链。现今，每年生产的拉链总长足以绕地球好多圈。
Invented in 1770, the eraser is used t erase pencil marks. Befre its inventin, believe it r nt, bread was used t erase pencil marks. Even better, in 1858, Hymen Lipman invented the all-in-ne pencil with an eraser.
In 1968, a US scientist, Dr Spencer Silver, attempted t develp a super-strng adhesive. Hwever, he accidentally created a reusable, pressure-sensitive adhesive. In 1974, ne f his clleagues came up with the idea f using the adhesive t anchr his bkmark. The riginal ntes’ yellw clur was chsen by accident, as the lab next dr t the Pst-it team had nly yellw scrap paper t use.
橡皮发明于1770年，用于擦掉铅笔字迹。不管你信不信，在发明橡皮之前，面包曾被用于擦除铅笔痕迹。更好的是，在1858年，海门·李普曼发明了带橡皮的多功能铅笔。
1968年，美国一位科学家斯潘塞·西尔弗博士试图开发一种超强力的粘合剂。然而，他意外地创造了一种可重复使用的压敏胶。1974年，他的一个同事想到了用这种胶来固定书签。最初便利贴选中黄色也非常偶然，因为便利贴小组隔壁的实验室只有黄色小纸片可以用。
Read the text and fill in the frm.
Giden Sundback, mdern zip
Invented in 1770, in 1858, Hymen Lipman invented the all-in-ne pencil with an eraser.
n 1968, Dr Spencer Silver, a “lw-tack”, reusable, pressure-sensitive adhesive. In 1974, his clleague used the adhesive t anchr his bkmark.
Listening & Speaking
Language pints
1. The zip has becme s cmmn that we almst take it fr granted. 【句型分析】* becme 为系动词作谓语，采用现在完成时。* 句中含有 结构，意为“那么/如此……以致”。* cmmn 为形容词作表语。* that 为连词，引导结果或目的状语从句。* take 为谓语，采用一般现在时。* we 为人称代词主格。has 为助动词。the 为定冠词。【知识点讲解】1. granted对...不当回事， 对...因习以为常而不重视 那么/如此……以致
2. Whitcmb L. Judsn frm Chicag is believed t be the “Inventr f the Zip”, but it was actually Giden Sundback wh designed the mdern zip. 【句型分析】* believed 为谓语，采用一般现在时和被动语态。* t be 为不定式，作主语补足语。* be 为系动词。* but 为并列连词，连接并列句，表转折。* it 为形式主语，用于构成强调句式: it + be + 强调部分 + wh...* was 为系动词作谓语，采用一般过去时。* designed 为谓语，采用一般过去时。 * is 为助动词。the 为定冠词。
2. Whitcmb L. Judsn frm Chicag is believed t be the “Inventr f the Zip”, but it was actually Giden Sundback wh designed the mdern zip. 【知识点讲解】1. believed t d sth据信...
3. Invented in 1770, the eraser is used t erase pencil marks. 【句型分析】* Invented 为过去分词，作句子状语。* used 为谓语，采用一般现在时和被动语态。* t erase 为不定式，作主语补足语。* is 为助动词。the 为定冠词。【知识点讲解】be used t d sth(被)用来做某事
4.Befre its inventin, believe it r nt, bread was used t erase pencil marks. 【句型分析】* used 为谓语，采用一般过去时和被动语态。* t erase 为不定式，作主语补足语。* its 为物主代词。was 为助动词。【知识点讲解】1.believe it r nt信不信由你2.be used t d sth(被)用来做某事
5.In 1974, ne f his clleagues came up with the idea f using the adhesive t anchr his bkmark. 【句型分析】 came 为谓语，采用一般过去时。* using 为动名词，作介词宾语。* t anchr 为不定式，作宾语补足语(或称复合宾语)。* his 为形容词型物主代词。the 为定冠词。【知识点讲解】1.cme up ) 想出...， 找到(答案) 2) 拿出（一笔钱）等
6.The riginal ntes’ yellw clur was chsen by accident, as the lab next dr t the Pst-it team had nly yellw scrap paper t use. 【句型分析】* chsen 为谓语，采用一般过去时和被动语态。* as 为连词，引导状语从句。* had 为谓语，采用一般过去时。* t use 为不定式。* was 为助动词。ntes' 为名词所有格。the 为定冠词。【知识点讲解】1.by accident意外地, 偶然地2.next dr t...在...隔壁 3.scrap paper（散的）便条纸
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