人教版九年級英語上冊《When was it invented?》SectionA PPT課件(第3課時)，共16頁。
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 以低價
e.g.:The fridge was bought at a low price.
2.translate... into... 把……譯成
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.
語法拓展
被動語態(tài)（二）——一般過去時的被動語態(tài)
在第5單元已介紹了被動語態(tài)的概念及主動語態(tài)變被動語態(tài)的用法，本單元主要介紹一般過去時的被動語態(tài)。
一般過去時被動語態(tài)的結(jié)構(gòu)：
肯定句：主語+was/were+動詞的過去分詞+（by...）.
e.g.:The classroom was cleaned by me yesterday afternoon.
否定句：主語+was/were+not+動詞的過去分詞+(by...).
e.g.:He wasn't sent to the city last month.
一般疑問句：Was/Were+主語+動詞的過去分詞+（by...）?
回答用：Yes,主語+was/were;No,主語+wasn't/weren't。
e.g.:—Was your homework finished last weekend?
—Yes,it was./No,it wasn't.
特殊疑問句：
（1）當(dāng)疑問副詞/代詞不作主語時：
疑問詞+was/were+主語+過去分詞+（by...）?
e.g.:Where was the car parked?
（2）當(dāng)疑問代詞作主語時：
疑問代詞+was/were+過去分詞+（by...）？
e.g.:Who was taken to the office?
Exercise
一、單項選擇。
( )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.(改為被動語態(tài))
Your English book _______ _______to school yesterday.
2.Your bag was put here.（改為否定句）
Your bag _______ _______ here.
3.Peter was allowed to take the test.(改為一般疑問句)
______Peter ________ to take the test?
... ... ...
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