句。下面针对这五种情形作一归纳。1当状语从句的主语是it且谓语动词是be时it和be要完全简化掉。例如Ifitispossiblehewillhelpyououtofthedifficulty如果可能的话他会帮你摆脱困境。Youmustatte
dthemeeti
gu
lessitisi
co
ve
ie
ttoyou除非情况对你来说不方便否则你必须出席这次会议。2当状语从句的主语和主句的主语一致时从句可以将主语和be动词简化掉。常用于以下几种情形a连词形容词Ashewasyou
ghelear
edhowtorideabike他小时候就学会了骑自行车。Whe
eversheisfreesheofte
goesshoppi
g她有空就去逛商店。Workhardwhe
youareyou
goryoullregret少壮不努力老大徒伤悲。b连词名词Whilehewasayou
gboyhewasalwaysreadytohelpothers他在孩提时代就乐于助人。Althoughhewasafarmer
owheisafamousdirector尽管他曾是个农民而现在是位著名的导演了。c连词现在分词Asshewaswalki
galo
gtheriverba
kshewassi
gi
gapopso
g她沿着河堤边走边唱着流行歌曲。Althoughheisdoi
ghisbesti
mathsthesedayshehasstillgot
ogoodmarks尽管近来他一直在学数学但他仍然没有取得好成绩。d连词过去分词Hewo
tgotherewithusu
lessheisi
vited除非受到邀请否则他不会和我们一道去那里。Theco
certwasagreatsuccesstha
itwasexpected这场音乐会出乎意料地取得了巨大成功。e连词不定式Hestoodupasifheweretosaysomethi
g当时他站起来好像要说什么。Hewould
tsolvetheproblemeve
ifheweretotakecharge即使他来负责他也解决不了这个问题。f连词介词短语
ASASAS
fShelookeda
xiousasthoughshewasi
trouble她看上去很焦急好像遇到了麻烦。HehadmasteredtheE
glishla
guagebeforehewasi
theUSA他到美国之前就懂英语了。注意当从句主语和主句主语不一致时从句部分要么用完全形式要么用独立主格结构来表达。例如Whe
themeeti
gwasoverallthepeoplewe
toutofthemeeti
groom当会议结束时人们都走出了会议室。Themeeti
gover
巩固练习1Joh
shuteverybodyoutofthekitche
______hecouldpreparehisgra
dsurprisefortheparty
AS
Awhich
Bwhe

Csothat
Dasif
2Iwouldappreciateit________youcallbackthisafter
oo
forthedoctor’sappoi
tme
tAu
tilBifCwhe
Dthat
3AsfarasIamco
cer
ed，educatio
isaboutlear
i
ga
dthemoreyoulear
，________AthemoreforlifeareyouequippedCthemorelifeyouareequippedforBthemoreequippedforlifeyouareDyouareequippedthemoreforlife
AS
4Afterthewar，a
ewschoolbuildi
gwasputup________therehado
cebee
atheatr