内容正文:
动词的语态
教学目标:
被动语态的定义:
2.被动语态的结构:
3.被动语态的用法:
一.重点:
二.难点:
1.灵活运用被动语态
2. 动词的过去分词
英语动词有两种语态:
主动语态 (the Active Voice)
被动语态(the Passive Voice)
A. 主动语态表示主语是动作的执行者。
B. 被动语态表示主语是动作的承受者。
We planted the tree.
The tree was planted by us.
语态的概述:
We speak English.
主语
谓语
宾语
English is spoken by us.
主语
谓语
宾语
主动语态
被动语态
(1)不知道或没有必要说明动作的执行者是谁,不用by+动作执行者短语。如:
The dictionary is well kept.这本词典被保存完好(不需要说明是谁保存的) 。
(2)强调动作的承受者,这时应用by短语。
The cup was broken by David.
这个杯子被大卫打碎了。
(3)做客观说明时,常采用一种被动语态句型: It’s / was said / believed / reported / + that … 据说/据报道…… 如: It’s reported that about three hundred people were killed in this earthquake.
被动语态的用法:
被动语态的构成:
be+动词的过去分词
如: The desk is made of wood.
The desks are made of wood.
He is asked a question by the teacher.
I was given a nice present by my friend yesterday.
被动语态的结构:
在改写中应注意:
1.把原来的宾语提到前面作被动语态的主语;
2.把动词变成“be + 过去分词”;
3.主动语态中的主语变为介词by的宾语。
主动语态变被动语态的方法:
例1 将下列句子改为被动语态。
We clean our classroom every day.
Our classroom is cleaned (by us) every day.
考
点
梳
理
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. 修改谓语的时态 ----即原句动词改为过去分词
made
5. 修改原句的主语 ----即by+ 主语.
by them.
1.They make shoes in that factory.
Shoes
are made
(by them)
in that factory.
一般现在时的被动语态构成 :
am/is /are +过去分词
主动语态变被动语态:
考点突破
She waters the flowers every day.
The flowers
every day.
are watered
by her
考点突破
2. I bought a computer last term.
A computer was bought (by me) last term.
一般过去时:was/were +过去分词
考点突破
The students planted many trees yesterday.
Many trees were planted by the students yesterday.
考点突破
4.They will finish the work in ten days.
The work will be finished (by them)
in ten days.
一般将来时:will+be+过去分词
考点突破
They will have an evening party next week.
An evening party will be had next week.
考点突破
5.Some workers are painting the ro