人教版九年级全册Unit 6 When was it invented？SectionA 1a-1d 课件(共15张PPT)

(共15张PPT)
Section A
1a-1c
Unit6
When was it invented
Revision
What is/are the … made of
It’s/They’re made of …
Where is/are it/they made
It’s/They’re made in …
stamps
paper
China
scarf
silk
Thailand
chair
wood
America
forks
steel
Korea
When was the paper invented
It was invented in about A.D. 105.
(公元）
年份的读法
两个数字一组，分为前后两组
1
1865 eighteen sixty-five
2
千年的读法
two thousand
two thousand and one/twenty o one
2015 twenty fifteen
3
前两个数字不为零，后两个数字为零
eighteen hundred
4
非四位数的年份的读法
531 five hundred and thirty-one
Read the years:
1876 1885 1927 1971
2000 2005 2015
A.D. 105 A.D. 221
Listen to the teacher and write down the years.
1885
1927
2005
1800
221
When was the bike invented
It was invented in 1970.
When was the paragliding invented
It was invented in 1984.
When was Wechat invented
It was invented in 2011.
When was the ball pen invented
It was invented in 1943.
I think the watch was invented (before / after) the ball pen.
ball pen
1943
watch
1918
camera
1839
mobile phone
1973
When was the camera invented
It was invented in 1839.
I think the mobile phone was invented (before / after) the camera.
I think the TV was invented (before / after) the car.
I think the telephone was invented (before / after) the car.
I think the computer was invented (before / after) the telephone.
Look at the things below. In what order do you think they were invented Discuss them with your group. Then number them [1-4].
1a
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.
1c
When was the telephone invented
I think it was invented in .
1876
1885
1971
1927
1876
语法梳理 :
本节课我们学习了 一般过去时态 的被动语态，由 be 动词的 过去式形式 was/were + 动词的过去分词形式 构成。如：
我认为电话是在1876年被发明出来的。
I think the telephone was invented in 1876.
were
invented
was
invented
一、看图完成句子
Cars in 1885
When the TV
It in 1927.
the personal computer
in 1971
Yes, it was.
Was
invented
was
invented
二、按要求完成句子
1. 我认为电视机是在汽车之后被发明的。
I think the TV after the car.
2. Cars were invented in 1885. （变为一般疑问句）
cars in 1885
3. The personal computer was invented after the car. （变为否定句）
The personal computer after the car.
4. The telephone was invented in 1876. （对划线部分提问）
the telephone
invented
was
Were
wasn’t
When
was
invented
invented
invented