1、时间状语从句：通常由从属连词when,before,af－
ter,assoonas,until(till),since等引导.
如：Thewomanbegantocryaf－
tershereadtheletter.Iwaitedtill(until)shecameback.
Theboydidn’tstoptalkingun－
tiltheteachercamein.I’lltellhimthenewsassoonasIseehim.Wehaven’theardfromhersinceshemovedaway.
在带有时间状语从句的主从复合句中,主语是一般将来时,从句要用一般现在时.
如：Hewillcometoseeyouwhenhehastimenextweek.Iwillnotleaveuntilhecomeshere.AssoonasIseehim,I’llgivethe
lettertohim.
2、地点状语从句：由where等引导.
如：Jackputthemeatwherethecatwouldnotreachit.
Wherethereisawill,thereisaway.（有志者事竟成）
I’mstandingwhereIcansee
thegame.3、原因状语从句：由because,as等引导.
如：LiMingdidn’tcometo
schoolbecausehewasill.Youngpeoplelovethistimeofyear,becauseitisgoodforsport.Asit’sraining,you’dbettertakeataxi.
Astheweatherwasfine,wewentoutforawalk.
4、条件状语从句：由if引导.
如：IfI’mfree,I’llgowithyou
tothecinema.Ifyoueatoldfood,youmaybeill.Wewon’tgototheGreatWallifitrainsnextweek.
由if引导的条件状语从句中,如果主语的谓语动词是将来时,从句的谓语动词时就用一般现在时,这一点与时间状语从句相同.
5、比较（或方式）状语从句：由than,as…as引导.
如：JimisolderthanLucy(is).HiscakeisbiggerthanLily’s.Icanreadaswellashecan.
XiaoHongisastallasherbrother.6、结果状语从句：由so…that,sothat等引导.
如：Hebecamesoangrythathecould’tspeek.
Sheworkedsoquietlythatnooneknewshewasthere.
7、让步状语从句：由although,nomatter,evenif,however等连词引导.
