春季12八年级英语基础版状语从句学生版文档格式.docx
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①主句+从属连词+从句
MumwascookinginthekitchenwhenIgothome.
②从属连词+从句+逗号（，）+主句
WhenIgothome,mumwascookinginthekitchen.
Ⅰ.状语从句分类
状语
从句
类别
连接词
1
条件
Youcannotsucceedunlessyouworkhard.
2
时间
MarywasreadingwhenIleft.
3
原因
Let’sstayinside,forit’sraininghardoutside.
4
目的
SpeakmoreloudlysothatIcouldhearyou.
5
结果
Hegotupsolatethathemissedthefirstclass.
6
让步
Althoughyouworkveryhard,youmakeveryslowprogress
7
比较
Icanplaybasketballaswellasyoudo.
8
*地点
Wherethereisawill,thereisaway.
1.时间状语从句
从属连词
常用时态
例句
when
主（将）从（现）
IwillcallyouwhenIgethomesafely.
主（过进）从（过）
Manypeopleweresleepingwhentheearthquakehappened.
主（过）从（过）
Hewashappywhenheheardthegoodnews.
主（现）从（现）
Wemustbecarefulwhenwecrosstheroad.
主（过完）从（过）
ThecarhadgoneawaywhenIarrivedatthestation.
while/as
主（进）从（进）
ShewassingingwhileIwasdancing.
assoonas
IsawhimassoonasIenteredtheroom.
before
ItwillbeoneweekbeforetheytraveltotheUK.
Thefilmhadbeenonbeforewegotthere.
after
IwillvisitmygrandparentsafterIfinishthework.
主（过）从（过完）
Theywenthomeaftertheyhadcleanedtheroom.
since
主（现完）从（过）
HehaslivedheresincehecametoShanghai.
until
Shewon’tgohomeuntilshefinishesherwork.
Shewaiteduntilthebuscameatlast.
2.条件状语从句
if
Wewillhaveapicnicifitisfinetomorrow.
unless
Hewon’tpasstheexamunlesshestudieshard.
常见句型转换题：
If...not=unless,在句型转换题中，if（如果）常常和unless（除非）and（那么）或or（否则）互换。
Ifyoudon’tgetupearly,youwillfailtocatchthebus.（保持句意不变）
=Youwon’tcatchthebusunlessyougetupearly.
=Youshouldgetupearly,oryouwillmissthebus.
=Getupearly,andyoumay/willcatchthebus.
3.原因状语从句
because
Shedidn’tgotoschoolyesterdaybecauseshewasill.
as
Asitwaslate,wehadtostayinsidethehouse.
since/nowthat
Since/Nowthateveryoneishere,let’sbeginthemeeting.
because和so不能用于同一句子中，because表示原因未知，语气最强回答why的提问。
because
引导的从句可与becauseof引导的简单句互换。
as语气最弱，常常用于口语中，since和nowthat（既然）表示已知的原因，一般放在主句之前。
Shedidn’tgotoseethemoviebecausetheweatherwasbad.
=Shedidn’tgotoseethemoviebecauseofthebadweather.
Thesportsmeetingwasputoffbecausetheweatherwasbad.
=Thesportsmeetingwasputoffbecauseofthebadweather.
4.目的状语从句
sothat/
inorderthat
Hewalkedquicklysothathecouldgetthereontime.
Hestudieshardsothathecanpasstheexameasily.
Iwillspeakmoreslowlysothatyoucanhearmeclearly.
sothat+从句=inorderthat+从句常与inorderto和soasto+短语互换，目的状语从句常常会和情态动词can,may,will,could,might,would等连用
=Hewalkedquicklyinorderthathecouldgetthereontime.
=Hewalkedquicklyinordertogetthereontime.
=Hewalkedquicklysoastogetthereontime.
5.结果状语从句
so...that
Theboywassoyoungthathecan’tgotoschool.
Heworkedsohardthathegotthefirstprize.
So...that（如此.......以至于）在句型转换中常常会和enoughtodo或者too...to互换，结果状语状语从句常常会和情态动词can,may,will,could,might,would等连用。
Theboyissoyoungthathecan’tgotoschool.（保持句子基本意思不变）
=Theboyistooyoungtogotoschool
=Theboyisnotoldenoughtogotoschool
6.让步状语从句
though/although
Heworkshardthoughheisnotverywell.
Althoughhewasill,hestillwenttowork.
解析：
although和though不和but连用，although放在句首，though位子不定。
在句型转换中，although/though常常和but互换。
如果是连续性动词可以用进行时表示。
Althoughitwasverylate,hewasstilldoinghishomework.（保持句子的基本意思不变）
=Itwasverylate,buthewasstilldoinghishomework.
7.比较状语从句
as...as
Thebusdoesn’tgoasfastasthetrain（does）.
than
MaryistallerthanKate（is）.
the+比较级+S+V；
the+比较级+S+V
主（现/将）从（现）
Theharderyouwork,thegreaterprogressyou（will）make.
as+adj./adv.原级+as的否定形式为notas/so+adj./adv.原级+as.比较状语从句中，从句的谓语常常省略。
notas/so...as在句型转换中常常和than互换；
than在句型转换中常常与最高级转换。
Mybikeisnotasexpensiveashis.（保持句子的基本意思不变）
=Hisbikeismoreexpensivethanmine.
Tomrunsmorequicklythananyotherstudentinourschool.（保持句子的基本意思不变）
=Tomrunsmostquicklyinourschool.
I.Choosethebestanswer.（错误率：
掌握情况：
）
1.Youarenotallowedtoenterthetheatre______youhaveaticket.（16一模普陀）
A.becauseB.whenC.ifD.unless
2.Wedo
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