人教版九年级上册 Unit 5What are the shirts made of?单元语法精讲与精练课件

(共9张PPT)
单元语法精讲与精练
1.被动语态的概念
英语中常用的有两种语态，即主动语态（The Active Voice)和被动语态（The Passive Voice)。
当句子的主语是动作的执行者或发出者时,谓语的形式是主动语态。当句子的主语是动作的承受者或对象时,要用被动语态。
eg：Many people plant trees in spring.这是主动语态的句子。many people(主语）是动作plant 的执行者，表示“树”是由“许多人”种的。
Trees are planted by many people in spring.这是被动语态的句子。trees(主语）是动词plant 的承受者，表示“树”被种。
语法精讲
被动语态（一）：一般现在时被动语态
2.—般现在时被动语态的基本结构。
(1)肯定句式：主语+ is / am / are十动词过去分词+ (by…）。
eg：The classroom is cleaned (by me) every day.
教室每天被(我)打扫。
(2)否定句式：主语+ is / am / are + not +动词的过去分词+ (by…)。
eg:The boy’s homework isn’t done by him every day.
那男孩的作业每天都没做。
(3) —般疑问句句式：Is/Are/Am+主语+动词的过去分词十（by…) 回答时用Yes,主语+ is/am/are / No,主语+ is/am/are+not 。
语法精讲
(4)特殊疑问句句式:①疑问副词/代词（不作主语）+ is/am/are+主语+动词的过去分词+ (by…）？
②疑问代词（作主语）+ is/am/are +动词的过去分词+ (by…)
eg：When are computer games played by you
你什么时候玩游戏？
Who is hurt/hit 谁受伤/被打了？
语法精讲
3.主动语态变被动语态的方法。
(1)主动语态的宾语变为被动语态的主语。
(2)主动语态的谓语动词变为“be+及物动词的过去分词+ (by…）”形式。
(3)主动语态的主语为by引导的短语放在主谓结构之后，在意思明确的形式后可以省略。
语法精讲
1.The cars (make) in Guangzhou.
2.Do you know when the shop (close) every day
3.I (tell) not to play computer games on weekdays.
4. lunch (cook) by your father
5.How often the Olympics (奥运会） (hold)
Ⅰ.用括号里所给动词的正确形式填空。
are made
语法精练
is closed
am told
Is cooked
are held
6.People grow rice in the southern part of China.
Rice in the southern part of China.
7.When do you do your homework
When your homework by you
8.Tim doesn’t like his sisters.
Tim’s sisters (by him).
9.—Does Tony play soccer after class
—No，he doesn’t.
— soccer after class Tony？
—No， .
10.Does he often look after the old man
the old man often by him
Ⅱ.将下列句子改为被动语态。
is grown
语法精练
is done
aren’t liked
Is played by
it isn’t
Is looked after
11.英语老师经常使用录音机。
Recorders often English teachers.
12.你的手机是国产的吗？
your mobile phone China
13.这个老师每天给我们很多作业。
Much homework us by the teacher every day.
14.韩梅每天读很多书吗？
a lot of reading by Hanmei every day
15.大家都喜欢这本书。
The book everyone.
Ⅲ.根据汉语完成句子，每空一词。
are used by
语法精练
Is made in
is given to
Is done
is liked by
Thank you!