(共19张PPT)
Unit 5 语法
the Passive Voice
(被动语态)
They make shoes in that factory.
主语+及物动词+宾语
Shoes are made (by them) in that factory.
英语的谓语动词有两种语态:
主动语态和被动语态.
预习检测
完成预习案上的预习检测并核对答案:
1.
2.
B
D
学习目标
1. 掌握被动语态的一般用法.
2. 掌握各种时态的被动语态.
3. 变被动语态的步骤.
一. 被动语态的用法
1. 不知道动作的执行者是谁。
这块手表是中国制造的。
This watch is made in China.
2. 没有必要指出动作的执行者
每年都应该种更多的树。
Many trees should be planted every year.
问题引导下的再学习
3. 需要强调或突出动作的承受者。
世界上越来越多的人说汉语。
Chinese is spoken by more and more people in the world.
4. 句子的主语是动作的承受者。
许多房屋被冲走了。
Many houses were washed away by the flood.
二.被动语态的大体构成:
be + done(过去分词)
那么be体现了句子的时态,下面请组内讨论各种时态的被动语态.
各种时态的被动情况:
一般现在时:
一般过去时:
情态动词变被动:
am / is / are done
was / were done
情态动词+be+ done
1.奶奶每年都种许多花.
Many flowers ____________________ by my
grandmother every year.
2. The house in 2004.
is built B. is building
C. was built D. used
3. 这些工作今天必须完成.
The work ____________________ today.
are planted
C
must be finished
Discuss:主动语态变被动语态的方法:
We speak English.
主语
谓语
宾语
English is spoken by us.
主语
谓语
宾语
宾变主,主变宾,前加by
主变被解题步骤:
1. 找宾语 ----即动作的承受者
They make shoes in that factory.
Shoes
2. 判断宾语的单复数 ----即be动词的单复数.
are
were
3. 判断动词的时态 ----即be动词的时态.
4. 修改谓语 ----即原句动词改为过去分词
made
5. 修改原句的主语 ----即by+ 动作的执行者.
by them in that factory.
1. Tom broke the window.
The window was broken by Tom.
2.He broke the windows.
The windows were broken by him.
Be要随着主语变
逻辑主语by来引
当堂训练
改写句子
1. We plant trees in spring every year.
_______________ by us in spring every year.
2. She posted the letter yesterday.
____________________ by her yesterday.
3. You may hand in your homework tomorrow.
______________________________ by you tomorrow.
Trees are planted
The letter was posted
Your homework may be handed in
真题再现
1. ---Don't smoke here, Dad . Smoking ______ in public places.
---Oh sorry. I'll stop right now
A. isn't allowed B. aren't allowed
C. doesn't allowed
2. --The school has a long history.
--Yes ,it ______ more than 100 years ago
A. built B. is built B. was built
A
C
突破方法
1.判断动作执行者或承受者.
对于被动语态试题来说,主要是让大家能够找出谓语动 作的执行者或承受者,这就要根据句子的意思进行判断,然后根据句子中的时间,作出正确的选择.
2. 时态判断法.
被动语态的使用离不开时态。所以应根据句中提提供的时间状语或上下文的暗示来分析判断应该使用哪种时态的被动语态.
1.Our school _____ ____in 2002.(开办)
2.The young trees must____ ____ _____
well.(照顾)
3. _____ this building_________(建成)last year
4.The book _____ _______(写)by him last year.
5. The bridge _______ _______(不建造)in1989..
6.The 29th Olympic Games will____ ______
(举行) in Beijing in 2008.
was opened
be looked after
Was
built
was written
wasn’t built
be held
达标检测
课堂小结
1. 被动语态的基本结构:
2. 主动语态变被动语态的步骤:
be + 动词的过去分词
作业
1. 预习有关被动语态的其它时态的句型.
2. 预习被动语态的特殊用法.
Thank you!