时间状语从句省公共课一等奖全国赛课获奖课件.pptx

AdverbialClauses条件状语掌握状语从句关键
(1)as,while,when连接词类别While,when在句中不一样含义:
WhileIwaswalkingdownthestreet,I
cameacrossanoldfriend.(while=_______)
WhileIreallydon’tlikeart,Ifindhisworkimpressive.(while=_________)
Helikespopmusic,whileIamfondoffolkmusic.
Strikewhileironishot.

Theywerewalkingdownthestreetwhentheysawanaccident.
2)Ihadjustgothomewhenitbegantorain.
3)Iwasabouttogoswimmingwhenourguidestoppedme.
4)It'scoldwhenitsnows.
AsIleftthehouse,Iforgotthekey.
2.AsIgetolder,Igetmoreoptimistic.
3.Helookedbehindashewent.
4.Astheweatherissobad,wehavetostayhome.
5.Youcandoitasyoulike.
6.Oldasheis,heisstillenergetic.

Fillintheblankswith“when,while,as”
1______youmeetawordyoudon'tknow,consultthedictionary.
2.Thestudentstooknotes_____theylistened.
3._____thewindrose,thenoiseincreased.
4.Shecalled_______Iwasout.
5.Wemuststrike______theironishot.
6.________youhavefinishedyourwork,youmayhavearest.
7.Iwasjustreadingabook______shecameintomyroom.
before使用方法
1.Wehadsailedfourdaysandfournightsbeforewesawland.
2.Wehadn’trunamilebeforehefelttired.

3.Pleasewriteitdownbeforeyouforgetit.
4.BeforeIcouldgetinaword,hehadmeasuredme.

含有before句型结构：
1.Itwillbe/was＋一段时间＋before…“过多久才”
It_________________________(还要过两年)heleavesthecountry.
It______________________(过了很长一段时间)beforehegottosleepagain.
2.Itwillbe/was+not＋一段时间＋before…“不多久就……”
Itwasn’ttwoyearsbeforeheleftthecountry.
Itwasnotlongbeforehecameback.
Since使用方法
1.IhavereturnedhomefourtimessinceIcamehere.
2.Shehasbeenworkinghere(eversince)heleftschool.
惯用句型：Ithasbeen(is)+时间段+since从句“自从……有多长时间了”
毕业已经有六年时间了。
Ithasbeen(is)sixyearssinceshegraduatedfromtheuniversity.

（2）引导时间状语从句连接词除上述外还有：
①till,until,
Don’tgetoffthebusuntilithasstopped.
Hewaitedforhisfatheruntil(till)itwastwelveo’clock.

②once,assoonas,directly,immediately,
AssoonasIhavefinishedit,I’llgiveyouacall.
Onceyoushowanyfear,hewillattackyou.
Hemadeforthedoordirectlyheheardtheknock.

③themoment,theminute,thesecond…一……就
hardly/scarcely…when,nosooner…than表示“一……就
Wehadhardlygotintothecountrywhe