被动语态_.ppt

被动语态被动语态基本用法
当句子的主语是动作的执行者时，谓语的形式是主动语态。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）
1)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）
willbe+V(过去分词）
情态动词+be+V(过去分词）1.规则动词的过去分词：Heplantstreesinspring.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。Tomwillcleantheroomtomorrow.Hisbrotherwashesbowlseveryday.1.Theymakeshoesinthatfactory.
主语+及物动词+宾语
2.Theyboughttencomputerslastterm．
3．AmycantakegoodcareofGina．4.Theywillfinishtheworkintendays.

5.
Someworkersarepaintingtheroomsnow．6．Wehavemadetwentymorekeys．7．Iwasdoingmyhomeworkat8:00lastnight．

各种时态的被动语态构成
1）一般现在时：Youareinvitedtodothis.
2）一般过去时：Thestorywastoldbyher.
3）一般将来时：Theproblemwillbediscussedtomorrow.4)情态动词：Therubbishcanbeputintothedustbinoverthere.时态各种时态的被动语态构成何时使用被动语态呢？
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。例如：
Footballisplayedallovertheworld．
二、不易找到或根本就不可能找到动作的执行者时。例如：
Mybikewasstolen．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。例如：
Itissaidthatonedayheclimbedtothetopofahouseand……
ItwasreportedthathermotherdiedofSARS.
众所周知……Itiswellknownthat…
据推测说……Itissupposedthat…四、汉语中含有“被”、“由”等词时。
例如：
TinaisaskedtocomebyPaul．
Tina是被Paul叫来的。
五、某些句子习惯上用被动语态。例如：
HewasborninOctober，1989．1.Peopleuseknivesforcuttingthings.
Knives____________forcuttingthings.
2.Thestudentscleanthewindowsoftheirclassroomtwiceamonth.
Thewindowsoftheirclassroom_____________twiceamonth.3.Ifoundtheticketonthefloor.
________________________onthefloor.
4.Itoldhertoreturnthebookintime.
She_____________toreturnthebookintime.5.Hisdoctormadehimhaveonlytwomealsaday.
He___________________________onlytwomealsaday.
6.Nowpeoplecanusecomputerstohelpthem.
Nowcomputers___________________tohelpthem.7.Didyouplantmanytreesatthistimelastyear?
___________________________atthistimelasttime?
8.Mustwefinishourworktoday?
_______ourwork_____________today?9.Theforeignfriendsgaveussomewonderfulstamps.
1)____________________somewonderfulstamps.
2)Somewonderfulstamps_____________________________.10.TheteacheraskedTomtoturnonthecomputer.
Tom_______________toturnonthecomputer.