2021学年Section A课文内容课件ppt

这是一份2021学年Section A课文内容课件ppt，共20页。PPT课件主要包含了Karl Benz，被动语态，Pair work，被动语态的几种句型，Exercises，invented 等内容，欢迎下载使用。
The Fur Great Inventins f ancient China
Papermaking
D yu knw what these inventins are?
the first telephne
the first car
the first televisin
D yu knw wh these inventrs are?
Alexander Bell
J. L. Baird
一般过去时被动语态结构：
was/were +过去分词
2.We planted many trees last year.
were planted
1.They bught a camera last term．
by them last term.
The passive vice.
主动语态变被动语态的结构图:
Bell invented the telephne in 1876. The telephne was invented by Bell in 1876.
Wh invented the first car?
Karl Benz invented the first car in 1885. The first car was invented by Karl Benz in 1885.
Wh invented the first telephne?
Bell invented the first telephne in 1876.
The first telephne was invented (by Bell) in 1876.
Wh invented the first televisin?
J. L. Baird invented the first televisin in 1927.
The first televisin was invented (by J. L. Baird) in 1927.
A:When was the telephne invented?B:It was invented in 1876.A:Wh was it invented by?B:It was invented by Bell.
1 肯定句 主语 + be + 过去分词 + (by…)
A sweet sng was sung by her n the stage.
2 否定句 主语 + be + nt +过去分词 + (by…)
3 一般疑问句 Be + 主语 +过去分词 + (by…)?
A sweet sng wasn’t sung by her n the stage.
Was a sweet sng sung by her n the stage?
4 特殊疑问句 疑问词 + be + 主语 +过去分词 + (by…)?
Where was a sweet sng sung by her?
They built the huse last year.He tk gd care f his sister yesterday.
The huse was built by them last year.
His sister was taken gd care f by him yesterday.
The huse wasn't built by them last year.
Was the huse built by them last year?
His sister wasn't taken gd care f by him yesterday.
Was his sister taken gd care f by him yesterday?
We cleaned ur classrm just nw.They used this rm fr resting.
Our classrm was cleaned by us just nw.
This rm was used fr resting by them.
Our classrm wasn't cleaned by us just nw.
Was ur classrm cleaned by us just nw?
This rm wasn't used fr resting by them.
Was this rm used fr resting by them?
贝尔于1876年发明了电话机。 Alexander Graham Bell _________ the telephne in 1876. 电话机在1876年被贝尔所发明。 The telephne _____ ________ _____ Alexander Graham Bell in 1876.
was invented by
把下列句子变成被动语态的句子。
They planted these trees n weekends.These trees _____ ______ n weekends.The wrkers built the bridge in 1968 _____ _______ _____ built by the wrkers in 1968.
主动语态变被动语态的步骤：1. 主动语态的宾语变为被动语态的主语；2. 主动句的谓语动词变为被动结构；3.被动语态的否定句，一般疑问句和时态的转换要靠be动词来完成。即：否定句在be动词后面加nt,一般问句be动词提前。4. 主动句的主语变为被动句的宾语，由by引出，当不强调动作的执行者时，常省略。
Hw can we becme an inventr?
Be creative
Have an interest
Learn a lt