Unit 6 When was it invented?>Section A1a-2b

课件20张PPT。人教九年级英语
Unit 6 When was it invented?Section A (1a- 2d)Do you know?What are the Four Great Inventions in the ancient China?Do you know when it was invented?Who was it invented by?毕升Do you know when it was invented?Who was it invented by? 1a Look at the things below. In what order do
you think they were invented? Discuss them with
your group. Then number them 【1-4】
(1= first, 4 = last). I think the TV
was invented
before the car. Well, I think the
TV was invented
after the car. 语法重点一 I think the TV was invented before the car.
我认为电视比汽车发明得早。
这是一个主从复合句，think后面跟了一个宾语从句。因为主句是一般现在时态，从句根据句意用了一般过去时态。
（1）was invented意为“被发明”，此结构为一般过去时的被动语态。一般过去时的被动语态的结构为“was/were + 及物动词的过去分词”。
如：These trees were planted last year.
The car was bought yesterday. （2）invent做动词，意为“发明，创造”，指发明以前没有的新东西。当物做主语时，常用被动语态。invention名词，意为“发明物”；inventor名词，意为“发明家，发明者”。
如：Edison, a great inventor, invented many great inventions during his life.
Many invention have been invented last year.1b. Listen and match the inventions with the years._____ 1876
_____ 1885
_____1927
_____19761c. Student B, cover the dates. Student A, ask Student B
when the things in the picture in 1b were invented.
Then change roles and practice again. When was the
telephone invented? I think it was
invented in
1876. ________ shoes with special heels ________ shoes with lights ________ hot ice-cream scoop,runs on electricity2b. Listen again and complete the chart below.2c. Make conversations using the information in 2b.What are they
used for? They’re used
for… 语法重点二What are they used for?
它们是用来做什么的？
be used for sth. /doing sth.意为“被用来做某事”，表示用途或目的，后接名词或动名词，相当于be used to do sth。
如：Clothes are used for keeping (= to keep) warm.
Wood can be used for building (= to build) houses.
The stick is used to write on the blackboard.语法重点二辨析：be used for ，be used as 与be used by(2)be used as 被用作…… , as是介词，
意为“作为”，其后一般接名词，强调使用
的工具或手段。
如:The box is used as a table by my mother.
(3)be used by 被……使用, by是介词，
意为“被,由”，后接动作的执行者。
如: The tools are used by the workers
in the factory.Hey Roy, the subject for my
school project is “Small
inventions that changed the
world.” Can you help me
think of an invention? My pleasure! Let
me think…hmm…
I know! The
zipper!The zipper? Is it
really such a great
invention? Think about how
often it’s used in
our daily lives.You
can see zippers on
dresses, trousers,
shoes, bags…
almost everywhere! Well, you do seem
have a point… Of course! I thought
about it because I saw
a website last week. The pioneers of
different inventions
were listed there. For example, it mentioned
that the zipper was invented
by Whitcomb Judson in 1893. But at that
time, it wasn’t
used widely. Really? So when did
it become popular? Around 1917. 语法重点三The pioneers of different inventions were listed there.
不同的发明的先驱者都列在这里。
pioneer 作名词，意为“先锋；开拓者；
先驱”。
如：He was a pioneer in the use of X-rays.
I see everybody as a pioneer out there.
作动词，意为“开辟；首倡”。
如：She pioneered the use of the drug. 小结训练1. The telephone ___ by a well-known
scientist ,Edison.
A. invented B. inventing
C. was invented
2. English is used ___ a second language ___
people in many countries.
A. as, by B. for ,by C. as, for
3. ----What is the bottle used for ?
----It is used _____ hold the water.
A. for me to B. by me to C. for me for
4. He is famous for the _____ he ____ .
A. invention/ invention
B. invention/invented
C. inventor/invention1. 完成课时作业1。
2.熟读并背诵2d对话。