被动语态的使用

　　1.主动语态变被动语态的方法

　　主动语态变被动语态要遵循以下的规律:"主(语)变宾(语),宾(语)变主(语),动词变'be + done',其余部分带下来."

　　*done代表各种动词的过去分词.

　　e.g.: The student broke the window yesterday.

　　主语 动词 宾语 其余部分

　　The window was broken by the student yesterday.

　　主语 动词(be done形式) 宾语 其余部分

　　I am carrying a box into the room. 我正在把一个箱子搬进房间.

　　The box is being carried by I (me) into the room. 一个箱子正在被我搬进房间.

　　(主语I变成by形式,宾语a box变成主语放在句首,动词am carrying 变成is being carried形式,而其他部分into the room带到下句,一般将by结构省略.)

　　2.几种特殊句型的被动语态

　　①含有双宾语句子的被动语态.

　　e.g.: I gave him a pen.

　　主语 动词 间接宾语 直接宾语

　　本句有两种变法,既可以将间接宾语变成主语(a),有可以把直接宾语变成主语(b).

　　a. You were given a pen. b. A pen was given to you.

　　注意将直接宾语变成主语,要用to来连接动词和间接宾语(宾格形式),切不可省略.

　　②含有复合宾语句子的被动语态.

　　e.g.: We elected him our president.

　　主语 动词 宾语 宾语补足语

　　按照变化规律本句应变化为:

　　He was elected our president by we (us).

　　但是有些情况(如下),要用to来连接宾语补足语和动词.

　　I made the door open.

　　The door was made to open.

　　*注意:在本句中make是使役动词(包括感观动词),它后接不加to的不定式做宾语补足语,但是变成被动语态时要将to还原,不可省略.

　　She saw me walking along the street.

　　I was seen to being walked along the street

　　③含有情态动词句子的被动语态.

　　e.g.: He need look after his mother in the hospital.

　　按照变化规律本句应变化为:

　　His mother need be looked after in the hospital.

　　含有情态动词句子变被动语态的规律是:情态动词+be+动词原形.

　　④含有动词词组句子的被动语态.

　　e.g.: He looked at the picture. 按照变化规律本句应变化为:

　　The picture was looked at by he (him).

　　注意:在过去分词looked后,切记不要忘记at这个介词,因为look at是完整的动词词组.

　　⑤含有宾语从句的被动语态.

　　e.g.: I think that she is a nurse.

　　如果按照变化规律变化本句的话,宾语是一个句子,而不是词.这时可以有以下两种变化方法:

　　a. 将宾语从句中的主语看作宾语而进行变化,即:She is thought to be a nurse by I (me).

　　b. 将宾语从句用it这个形式主语来代替而进行变化,即:It is thought that she is a nurse by I (me).