人教版九年级英语上册《When was it invented?》SectionA PPT课件(第3课时)，共16页。
Grammar Focus
When was the zipper invented?
It was invented in 1893.
Who was it invented by?
It was invented by Whitcomb Judson.
When was tea brought to Korea?
It was brought to Korea during the 6th and 7th centuries.
What is the hot ice-cream scoop used for?
It’s used for serving really cold ice-cream.
Language Points
1.at a low price 以低价
e.g.:The fridge was bought at a low price.
2.translate... into... 把……译成
e.g.:The book was translated into French.
3.all of a sudden=suddenly 突然
e.g.:An earthquake took place all of a sudden in Sichuan.
语法拓展
被动语态（二）——一般过去时的被动语态
在第5单元已介绍了被动语态的概念及主动语态变被动语态的用法，本单元主要介绍一般过去时的被动语态。
一般过去时被动语态的结构：
肯定句：主语+was/were+动词的过去分词+（by...）.
e.g.:The classroom was cleaned by me yesterday afternoon.
否定句：主语+was/were+not+动词的过去分词+(by...).
e.g.:He wasn't sent to the city last month.
一般疑问句：Was/Were+主语+动词的过去分词+（by...）?
回答用：Yes,主语+was/were;No,主语+wasn't/weren't。
e.g.:—Was your homework finished last weekend?
—Yes,it was./No,it wasn't.
特殊疑问句：
（1）当疑问副词/代词不作主语时：
疑问词+was/were+主语+过去分词+（by...）?
e.g.:Where was the car parked?
（2）当疑问代词作主语时：
疑问代词+was/were+过去分词+（by...）？
e.g.:Who was taken to the office?
Exercise
一、单项选择。
( )1.It was reported that nine people ______ in a balloon crash in Egypt on February 26th ,2013.
A.are killed B.were killed
C.will killed D.have killed
( )2.Lots of food and water______ to Ya'an,Sichuan Province immediately after the earthquake happened.
A.were sent B.are sent
C.send D.sent
( )3.Flowers ______ along the road last year.
A.plant B.planted
C.are planted D.were planted
( )4.—Have you finished your project?
—Not yet.I'll finish it if I ______ ten more minutes.
A.give B.am given
C.will given D.will be given
( )5.The Chinese writer has got lots of fans in France.His new book _____ into French as soon as it came out.
A.was translated B.translated
C.is translated D.translates
二、按要求完成句子。
1.You brought your English book to school yesterday.(改为被动语态)
Your English book _______ _______to school yesterday.
2.Your bag was put here.（改为否定句）
Your bag _______ _______ here.
3.Peter was allowed to take the test.(改为一般疑问句)
______Peter ________ to take the test?
... ... ...
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