的be时态要与动作发生的时间一致;而系表结构的be只有一般时或完成时,表示目前或过去的性质或状态。如:Thiswi
dowwasbroke
byKateyesterday这窗户是凯特昨天打破的。被动语态
Thisglassisbroke
这块玻璃是破的。系表结构,指目前的状态3从句中的状语来看,过去分词前有wellveryquite等副词修饰的是系表结构;若句中有时间、方式或目的状语时,一般为被动语态。Theplayiswellwritte
这剧本写得很好。系表结构Theplaywaswritte
withgreatcare这剧本是非常用心地写出来的。被动语态,有方式状语4被动语态中的过去分词必须是及物动词,而系表结构中的过去分词可以是go
efalle
rise
等不及动词。如下列两句是系表结构:Mype
isgo
e我的钢笔不见了。Thesu
isrise
太阳升起来了。
第4页共8页
fI
ClassExercises
1Goodbooks____agai
a
dagai
AshouldbereadedBshouldbereadCmustreadDoughttoread2Thechildre
____bythe
urseAwerelookedBlookedafterCwerelookedafterDlooked3He___somepiecesofadvicebuthe____tothemAgavedid
tliste
Bwasgive
was
tliste
edCgivewas
tliste
edDwasgive
did
tliste
4Whe
____theaccide
t_____Awashappe
Bdidhappe
Cishappe
Dwashappe
ed5Thequestio
____byussoo
Aisgoi
gtodiscussBwilldiscussCisgoi
gtobediscussedDhasbee
discussed6Thelab____aboutfiveyearsagoAwasbuildedBwasbuiltCbuildsDhasbee
built7Alotoftallbuildi
gs_____i
hishometow
i
thelastthreeyearsAhavesetupBhavebee
setupCweresetupDsetup8They____pri
ti
g500copiesbythee
doflastmo
thAhadfi
ishedBhavefi
ishedChadbee
fi
ishedDhavebee
fi
ished9Rice___also_____i
theirhometow
Ais…grow
Bis…grewCwas…grewDwas…grow
10He____bytheteachersAisalwayspraisedBpraisesChavebee
praisedDalwaysispraised
考点二:主动语态和被动语态的转换
1主动语态变为被动语态的方法1将主动句里的宾语成分变为被动句里的主语成分。把主动句里的宾格人称代词改为主格形式。2把主动结构的谓语动词改为be过去分词形式。
第5页共8页
f3将主动句的主语变为介词by的宾语。例如:Peopleuseradiosforliste
i
gtothe
ews(主动)→Radiosareuseforliste
i
gtothe
ewsbypeople(被动)Ipostedaletterlastweek(主动)→Aletterwaspostedbymelastweek(被动)注意:在makeletseehear
oticewatchfeel等动词后面作宾语补足语的动词不定式都不带to,但这种句子如果变为被动语态时,则应加上to。例如:Weheardhersi
ga
E
glishso
g(主动)→Shewasheardtosi
ga
E
glishso
gbyus(被动)2r