初中语法状语从句教学课件.pptVIP

英语语法状语从句

状语从句的分类

1.从句?按照引导词分类：?When,while,as：当……，在……的同?When/As/Whilehewaseatinghisbreakfast,heheardthedoorbell.?Since：自……以来?IthasbeentwoyearssinceIcametoBeijing.

辨析：when/while/as?从句非延性when?Theboycriedwhenhesawhismother.?从句延性while,as,when均可?while“在……的同”?as“伴随”的状?TomfellasleepwhileJerrywasgivingalecture

时间状语从句的破题方法

真?（2007上海）Hetransplantedthelittletreetothegarden____itwasthebesttimeforit.?A.where?C.thatB.whenD.until

?（2008上海）?—AreyoureadyforSpain??—Yes.Iwantthegirlstoexperiencethat____theyareyoung.?A.whileB.untilC.ifD.before

是是非非?其他引?（1）until/till?延性+肯定气：到……止?例：Walktillyoucometoawhitehouse.?非延性+否定气：到……才开始?例：Wedidn’tbeginourdiscussionuntilhecameback.

真?（2003上海）Agoodstorytellermustbeabletoholdhislisteners’curiosity_______hereachestheendofthestory.?A.whenB.unlessC.afterD.until

?（2000上海）Myuncle___untilhewasforty-five.?A.married?B.didntgetmarried?C.wasnotmarrying?D.wouldmarry

真?（2006上海）Adozenideaswereconsidered____the?architectdecidedonthedesignofthebuilding.?A.because?B.before?C.whether?D.unless

辨析：两种since的句型?（1）Itbetimesince+非延性?例：TheyhavebeenfriendssincetheymetforthefirsttimeinLondon.?解释：主句的动作从since的那一刻持续到现在（有……已经很长时间了）

?（2）Itbetimesince+延性?例：IhavelivedinBeijingsinceIworkedinShanghai.?解释：主句的动作从since引导的从句中的持续性动作结束时持续到现在（没有……已经很长时间了）

?Thatwasreallyasplendidevening.It’sbeenyears____Ienjoyedmyselfsomuch.?A.whenB.thatC.beforeD.since?1.逻辑推理：没有……已经很长时间了?2.Itbesince+延续性动词?选D

?They___friendssincetheymetinShanghai.?A.havemadeB.havebecome?C.havebeenD.haveturned?1.since+非延续性动词?主句的动作延续至今?2.选择四个选项中的延续性动词?选C

2.条件状从句?关系：假?引?（1）假如：if,unless(ifnot)?例：Youwillnotpasstheexamunlessyouworkhard（你不会通考，除非你努力学）?=Youwillnotpasstheexamifyoudon’tworkhard（如果你努力学，你就会通考）

?（2）在……条件下：incase,onconditionthat,pr