内容正文:
Unit 6 When was it invented?
Grammar Focus
一般过去时的被动语态
1. 一般过去时的被动语态的句式结构
肯定句
主语+was/were+及物动词的过去分词(+by...).
否定句
主语+was/were+not+及物动词的过去分词(+by...).
一般疑问句
Was/Were+主语+及物动词的过去分词(+by...)?
特殊疑问句
特殊疑问词+was/were+主语+及物动词的过去分词(+by...)?
2. 一般过去时的被动语态的基本用法
(1) 表示过去某一具体时间发生的动作,且句子的主语是谓语动词动作的承受者。
The house was built in 1990.
这所房子建于1990年。
(2) 讲述发生在过去的动作,且不知道动作的执行者。
He was honored with the name “Father of Hybrid Rice”。
他被授予“杂交水稻之父”的称号。
3. 含双宾语和复合宾语的主动句变为被动语态的方法
(1) 含有双宾语的主动句变为被动语态时,通常把指“人”的间接宾语变为主语,而指“物”的直接宾语则不变。
He gave me a book yesterday.
→I was given a book (by him) yesterday.
(2) 如果要把指“物”的直接宾语变为主语,则在间接宾语前加to或for.
I brought him some food.
→Some food was brought to him (by me).
(3) 含有复合宾语的主动句变为被动语态时,要将其中的宾语变成主语,宾语补足语不变。
Jim asked Tom to go for a walk.
→Tom was asked (by Jim) to go for a walk.
(4) 如果宾语补足语是不带to的动词不定式,主动语态变成被动语态时要加上不定式符号to.
We often heard Kate sing in the room.
→Kate was often heard to sing in the room (by us).
【助记】一般过去时的被动语态
被动一般过去时,
基本结构“be pp”;
be动词有 was、were,
人称和数主语定;
疑问就把be提前,
否定not在be后连。
【注意】
含有动词短语的主动语态变为被动语态时,不可丢掉构成动词短语的介词或副词。
My grandma took good care of my dog.
→My dog was taken good care of by my grandma.
奶奶把我的狗照顾得很好。(其中介词of不能漏掉)
Paper _________ first ________ about 2,000 years ago in China.
A. is; creating
B. is; created
C. has;created
D. was;created
答案:可用语法判断法解答本题。句意:在中国,纸大约在两千年首先被创造了出来。句中的ago是一般过去时的标志,且纸和创造之间是被动关系。因此本题考查的是一般过去时的被动语态,其结构是:was/were+及物动词的过去分词。故选D.
将下列句子改为被动语态
1. The young man saved the lives of the children.
2. The villagers didn't find the lost boy at last.
3. Did you clean up your room last night?
4. My mother bought me a new CD player.
5. We saw Jim come in.
【答案速查】
1. The lives of the children were saved by the young man.
2. The lost boy wasn't found by the villagers at last.
3. Was your room cleaned up last night?
4. I was bought a new CD player by my mother. /A new CD player was bought for me by my mother.
5. Jim was seen to come in.
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