被动语态教案
Passive voice
语言目标：
1、了解被动语态的含义。
2、掌握被动语态的基本构成（肯定、否定、疑问式）。
3、掌握被动语态的一般现在时、一般过去时的构成及用法；了解其它时态的构成。
4、掌握含情态动词的被动语态的构成及用法。
5、掌握主动语态变被动语态的基本思路。Procedures:
Step 1: warm up
主动语态的构成及相关用法：
当句子的主语是动作的执行者时，谓语的形式是主动语态。Step 2: presentation
1.被动语态基本用法
当句子的主语是动作的承受者时，谓语要用被动语态。
被动语态由助动词be+过去分词构成，时态通过be表现出来。be + Vp.p(动词的过去分词）
be 动词可以随时态人称的变化而变化
am/ is / are + V(过去分词）
was/ were+ V(过去分词）
will be + V(过去分词）
情态动词+ be + V (过去分词）
2.主动语态变被动语态口诀：
宾语提前主语变，
原主变宾by后见，
时态人称be关键。
eg: He plants trees in spring Tom will clean the room tomorrow
His brother washes bowls every day.
Step 3: 不同时态的语态变化
1.They make shoes in that factory.
Shoes are made (by them) in that factory.
一般现在时：S(主语）+am/is /are +过去分词
2. They bought ten computers last term．
Ten computers were bought (by them) last term.
一般过去时：S+was/were +过去分词
3．Amy can take good care of Gina
Gina can be taken good care of by Amy.
情态动词：S+ can/may/must/should + be+过去分词4.They will finish the work in ten days
The work will be finished (by them) in ten days.
一般将来时：S+ will+be+过去分词
5.Some workers are painting the rooms now．
The rooms are being painted by some workers now.
现在进行时：S+ am/is/are + being +过去分词
6．We have made twenty more keys．
Twenty more keys have been made by us.
现在完成时：S+ have/has + been+过去分词
7．I was doing my homework at 8:00 last night．
My homework was being done (by me) at 8:00 last night.
过去进行时：S+ was/were+being+过去分词
Step 4: 何时使用被动语态
一、行为主体不明确，不必说出或者无法说出动作的执行者时。eg：Football is played all over the world．
二、不易找到或根本就不可能找到动作的执行者时。
eg：My bike was stolen．我的自行车被盗了。
三、汉语中含有“据说”、“据悉”、“有人说”、“大家说”等时。eg：It is said that one day he climbed to the top of a house and ……
It was reported that her mother died of SARS.
众所周知… … It is well known that …
据推测说… … It is supposed that …
四、汉语中含有“被”、“由”等词时。
eg：Tina is asked to come by Paul．
Tina是被Paul叫来的。
五、某些句子习惯上用被动语态。
eg：He was born in October，1989．
Step 5: exercises
1.People use knives for cutting things.
Knives ______ ______ for cutting things.
2.The students clean the windows of their classroom twice a month.
The windows of their classroom______ _______ twice a month.
3.I found the ticket on the floor.
______ ______ ______ ______ on the floor.
4.I told her to return the book in time.
She ______ _______ to return the book in time.
5. His doctor made him have only two meals a day.
He ______ _______ _______ _______ only two meals a day. 6.Now people can use computers to help them.
Now computers _______ ______ ______ to help them.
7. Did you plant many trees at this time last year?
_______ ______ _______ _______ at this time last time?
8.Must we finish our work today?
_______ our work______ _______ today?
9. The foreign friends gave us some wonderful stamps.
1) _______ ______ _______ some wonderful stamps.
2) Some wonderful stamps _______ ________ _______ _______.
10.The teacher asked Tom to turn on the computer.
Tom _______ ________ to turn on the computer.
11.In this factory women do most of the work.
Most of the work _______ ________ by women in this factory.
12.He can mend the bike in two days.
The bike ______ ______ _______ in two days.
13.You must take this medicine three times a day.
This medicine _______ _______ ________ three times a day. 14.The students study German in this school.
German _______ ________ by the students in this school.
15.Do they often talk about this question?
______ this question often _______ about _______ _______?
1 Teenagers should _____ (allow) to go out at night.
2 The telephone _____ (invent) by Bell.
3 English ____ (speak) in China.
4 The car ____ (make) in China.
5 The room must _____ (clean) every day.