初三被动语态的结构及一些例子``

初三被动语态的结构及一些例子``
初三被动语态的结构及一些例子``

初三被动语态的结构及一些例子``
(1) am/is / are+及物动词的过去分词 ,体现一般现在时的被动语态
eg.English is spoken in their country.
(2) was/were +及物动词的过去分词 ,体现一般过去时的被动语态
eg.Our school wasn’t built in 1990.
Were the trees planted by him?
(3) will /shall+ 及物动词的过去分词,体现一般将来时的被动语态
eg.A:I shall send my boy to school next September.
P:My boy will be sent to school next september.
(4) would/should +及物动词的过去分词,体现一般过去将来时的被动语态
(5) have/has +been done,体现现在完成时的被动语态
eg.A:We have studied English for nine years.
P:English has been studied for nine years by us.
(6) had + been done,体现过去完成时的被动语态
eg.A:They had produced 100 cars by the end of last year.
P:100 cars had been produced by the end of last year.
带情态动词的被动结构
其形式为：情态动词+be+动词过去式
• Can,could/ will,would/ shall,should/ may,might/ must/ ought to/ need/ have to.
• Eg.The baby can be taken good care of by the baby-sitter.
主动语态变被动语态应注意的问题
1.把主动语态变为被动语态时,应保留主动语态原时态.
Eg.She often cleans the house.
The house is often cleaned by her.
2.有些动词可以有双宾语,在用于被动结构时,有两种改法.
Eg.His mother gave him a present for his birthday.
= He was given a present by his mother for his birthday.
= A present was given to him by his mother for his birthday.
3.当“动词+宾语+宾语补足语”结构变为被动语态时,
将宾语变为被动结构中的主语,其余不动.
Eg.Someone caught the boy smoking a cigarette(香烟）
=The boy was caught smoking a cigarette.
4.在使役动词have,make,get,let以及感官动词see,watch,notice,hear
不带to的动词不定式等变为被动结构时,要加to
Eg.Someone saw a stranger walk into the building.
=A stranger was seen to walk into the building.
5.有些相当于及物动词的动词词组,
如“动词＋介词”,“动词＋副词”等,也可以用于被 动结构,但要把它们看作一个整体,不能分开.其中的介词或副词也不能省略.
Eg.The meeting is to be put off till Friday.
The homeless children will be taken good care of.
课堂练习
（一）改写句子
1.We plant trees in spring every year.
_________________ by us in spring every year.
2.She posted the letter yesterday.
____________________ by her yesterday.
3.Mr.Turner gave me a birthday present.
_______________a birthday present by Mr Turner.
4.You may hand in your homework tomorrow.
______________________________ by you tomorrow.
5.She will write a letter.
__________________________ by her.
6.Her bag cannot be found by her.
_________________ her bag.
7.Do you often hear her sing Russian songs?
_________________________Russian songs by you?
8.She doesn’t let her son swim in the river.
_______________________ in the river by her.
9.Does she often sing the song?
_____________________ by her?
10.No one has ever beaten him at tennis.
________________________ at tennis.
以上是我自己做的PPT.