人教新目标版英语九年级上册 单元语法精讲与精练Unit 6 When was it invented课件(共9张PPT)

(共9张PPT)
单元语法精讲与精练
Unit 6 When was it invented
1.一般过去时的被动语态的结构
肯定句：主语+ was/were+V-p.p + (by…)
eg：The car was invented in 1895.
汽车是在1895年发明的。
否定句：主语+ was/were+not+Vp.p +(by…)
eg：He wasn’t told to go to Beijing.没人叫他去北京。
一般疑问句：Was/Were+主语+V-p.p +(by…)
eg：Was the light bulb invented by Edison
电灯是爱迪生发明的吗？
回答为：Yes，主语+ was/ were; No，主语+ was/were+not.
语法精讲
被动语态（二）：一般过去时的被动语态
特殊疑问句:
(1)疑问词不作主语：疑问词+ was/were +主语十V-p.p+ (by…)
eg：How was tea invented 茶是怎样被发明的？
(2)疑问词作主语：疑问词+ was/were +V-p.p+ (by…)
eg：When was computer invented
电脑是什么时候发明的？
2.被动语态的用法
(1)当我们不知道谁是动作的执行者,或者没有必要指出谁是动作的执行者时,常用被动语态。
eg：The yellow cup was broken.黄色的杯子被打破了。
(2)当我们主要关心动作的承受者，但也关心动作的执行者时,通常会在动作的执行者前面加by。
eg: The nice picture was drawn by a ten-year-old boy.这幅好看的画是由一个十岁的男孩画的。
语法精讲
1.The building near my home (finish) two years ago.
2.A present (give) to me by my mother on my birthday.
3.Sally (see) to swim in Daming Lake yesterday.
4.Jenny (invite) to the party. She had a wonderful time with us.
5.The book (translate) into many other languages last year.
Ⅰ.用括号内所给动词的适当形式填空。
was finished
语法精练
was given
was seen
was invited
was translated
6.We are late. All the tickets (sell) out half an hour ago.
7.His shoes (wash) by his mother yesterday.
8. a lot of useful things (invent) by Edison
9.The window (clean) an hour ago, and the room looks bright now.
10.In England, nobody under the age of 18 (allow) to drink in bars.
Ⅰ.用括号内所给动词的适当形式填空。
were sold
语法精练
were washed
Were invented
was cleaned
is allowed
11.She bought a piano last term.(改为被动语态)
A piano by her last term.
12.Penicillin was discovered by Alexander Fleming.(改为一般疑问句）
Penicillin by Alexander Fleming
13.The books were written by Mr. Green many years ago.(改为否定句）
The books by Mr. Green many years ago.
Ⅱ.按要求改写下列句子，每空一词。
was bought
语法精练
Was discovered
weren’t written
14.Our homework was handed in yesterday.(对画线部分提问）
your homework in
15.They didn’t grow vegetables in the garden last year.(改为被动语态）
Vegetables in the garden by them last year.
Ⅱ.按要求改写下列句子，每空一词。
When was handed
语法精练
weren’t grown
16.This watermelon (被分成) two halves just now.
17.That book (从……借) by him from the library last week.
18.Lucy was told (打扫教室) the classroom an hour ago.
19.The paper (用……造) grass last year.
20.The new bike (买给我)by my parents as a present last week.
Ⅲ.根据汉语完成句子。
was divided into
语法精练
was borrowed
to clean
was made of/from
was bought for me
Thank you!