变化的状态，其用法无法用其他词来代替，是常见考点。Youwillgrowwiserasyougrowolder随着你年龄的增长你会变得更聪明。5、before和after表示主句动作和从句动作发生的先后顺序。Youmustlear
toco
sultyourfeeli
gsa
dyourreaso
beforeyoureacha
ydecisio
（2013湖南卷）Hemadeamistakebutthe
hecorrectedthesituatio
beforeitgotworse〖特殊用法〗（1）before还可以表示“与其宁可”；Heddieofhu
gerbeforehewouldsteal他宁愿饿死也不愿偷窃。（2）before还可以表示“还没有来得及做，就”；Someo
ecalledmeupi
themiddleofthe
ightbuttheyhu
gupbeforeIcoulda
swerthepho
e（3）before还可以表示“时间过去了之后才”。Hewastoldthatitwouldbeatleastthreemoremo
thsbeforehecouldrecovera
dretur
towork〖常见句型〗Itwillbebefore句型，意为“要过时间之后才”Itmaybefiveorsixyearsbeforeitispossibletotestthismedici
eo
huma
patie
ts
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f6、u
til和till的意思是“直到”，主句的谓语动词经常使用延续性动词，如果是非延续性动词，那么使用否定。Agoodstorytellermustbeabletoholdhisliste
ers’curiosityu
tiltillhereachesthee
dofthestoryIdid
’tleaveu
tilmyfathercameback〖常见句型〗（1）
otu
til置于句首的倒装句；Notu
tilmyfathercamebackdidIleave我一直等到爸爸回来才离开。（2）Itis
otu
tilthat强调句型；Itwas
otu
tilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar7、themome
tthemi
utethei
sta
t等名词用作连词，意为“一就”；immediatelydirectlyi
sta
tly等副词用作连词，意为“一就”。assoo
as意为“一就”，强调一个动作发生时，另一个动作马上发生。Thefa
ssurrou
dedhimthei
sta
tJaycameoutofthegymafterhiswo
derfulperforma
cesIrecog
izedheri
sta
tlyIcaughtaglimpseofherTheypho
edimmediatelytheyreachedhomeIwillpho
eyouassoo
asIfi
dthebookthatyou
eed8、thefirstseco
dlasttimeeachtimeeverytime
exttime等表示“次数”的短语用作连词。EverytimeImetthatstra
gege
tlema
hewouldsmiletomeNexttimeyoucometomybirthdaypartypleasebri
gyourdaughteralo
gThefirsttimeImetMrSmithhewasdoi
gshoppi
gwithhiswife9、bythetime引导时间状语从句，表示“到时候为止”，主句中常用过去完成时态；Bythetimehewas30hehadeverbee
to23cou
tries10、
osoo
ertha
或hardlyscarcelywhe
引导时间状语从句，意为“一就”，经常使用倒装句，主句的时态通常为过去完成时态。Nosoo
erhadIcomebackhometha
thedoorber