时间：2018-09-30 05:31:52 来源：早教700网 本文已影响 人
(1)在主动语态中,make , let , hear , see , watch , notice 等词,其后跟省略to的动词不定式(动词原形),在变为被动语态时,必须还原动词不定式符号to.如:
We heard him sing this song in the room.
He was heard to sing this song in the room.
The boss made him work 14 hours a day.
He was made to work 14 hours a day.
I see him walk to school
He is seen to walk to school.
(2)带双宾语的动词give, send , teach , lend , show , pass ,tell等,在变成被动语态时,可以有两种情况.如果用直接宾语作为被动语态的主语,这时,间接宾语前要加介词to;如果用间接宾语做主语,则不加to. 如:
A pen was given to me by my friend yesterday
My friend gave me a pen yesterday
I was given a pen by my friend yesterday.
The children are often told some stories by him.
He often tells the children some stories.
Some stories are often told to the children by him.
被动语态(passive voice)是 动词的一种形式，用以说明 主语与 谓语动词之间的关系。英语的语态共有两种： 主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。被动语态是动词的一种特殊形式，一般来说，只有需要动作对象的及物动词才有被动语态。汉语往往用"被"、"受"、"给"等被动词来表示被动 意义 。被动语态由“助动词be+及物动词的过去分词”构成。被动语态的时态变化只改变be的形式，过去分词部分不变。疑问式和否定式的变化也如此。
主：We believe him.
被：He is believed by us.
主：He bought his children some pens.
被：Some pens were bought for his children by him.
主：Everyone will know the truth soon .
被：The truth will be known by everyone.
主：Mary is making a doll.
被：A doll is being made by Mary.
主：They were carrying the hurt player.
被：The hurt player was being carried by them .
主：He has received the letter.
被：The letter has been received by him.
主：They had built ten bridges.
被：Ten bridges had been built by them