成考英语基本文法复习资料第八章(2)

成被动语气，必须做以下的动作：

　　原有受词变成名词

　　动词变成verb to be＋过去分词（past participle）

　　原有主词变成在动词后面，但前面加by.

　　举例来说，主动语气的句子可以是

　　I saw a cat.

　　被动语气就成了

　　A cat was seen by me.

　　最重要的是，verb to be的时式必须和原句子的相同，以上的例子中，动词是过去式，所以verb to be也是过去式。除此以外，verb to be也要配合新的主词。请看以下的例子：

　　I saw two cats.

　　改成被动语气以后，句子是：

　　Two cats were seen by me.

　　以下是主动改被动的例子，最重要的是注意verb to be的形式：

　　主动语气（active voice）

　　被动语气（passive voice）

　　Mr. Jones hit the dog.

　　The dog was hit by Mr. Jones.

　　My brother saw you yesterday.

　　You were seen by my brother yesterday.

　　He sent the book to me.

　　The book was sent to me by him.

　　Dickens wrote those two novels.

　　Those two novels were written by Dickens.

　　They ate all of the apples.

　　All of he apples were eaten by them.

　　Jane wrote that song.

　　That song was written by Jane.

　　My mother loves me.

　　I am loved by my mother.

　　「练习二十八」

　　将以下的句子由主动语气改成被动：

　　He saw that movie last night.

　　He wrote that letter to me.

　　He teaches those English classes.

　　God loves you.

　　They bought two hou