从句1、主语从句引导词有:that,what,whether,when,wherever,who等,主语从句的谓语动词必须用单数。举例:1)Thathewillfalltheexamiscertain.2)Whatshesaidistrue.3)Itdoesn'tmatterwhensheleaves.4)Whoeveristiredmayrest.2、表语从句一般位于系动词之后。举例:ThequestionisthatIalsolikeher.3、宾语从句句型:主句+连词+宾语从句连接宾语从句的词有:that,if,whether,who,whose,what,which,where,when,why,how,whoever,whomever,whenever,wherever等》举例:1)Hesaidthathewasthefirsttoclambtothetopofthemountain.2)Iwonderif/whetheryoucouldlendmetourbike.3)Parentsshouldn'tgivetheirchildrenwhatevertheywant.4)Shedoesn'tknowwhowillcome.5)Heaskedif/whethershehadanapartmentinthecity.6)Whodoyouthinktheywilltravelwith?4、状语从句(1)时间状语从句引导时间状语从句的连词有:when,whenever,as,while,before,after,until,till,since,ever,assoonasimmediately,directly,hardly,hardly...when等。举例:1)WhenIwasinShanghai,Imether.2)Pleasewaituntilyouarecalled.(2)地点状语从句常由where何wherever引导。举例:Heliveswherethestreetcrossestheriver.(3)原因状语从句常由as,because,since,nowthat,seeingthat等引导,其中语气最强烈的就是because。举例:Hehastoleaveoffbecauseheisseriouslyill.(4)条件状语从句常由if,unless,aslongas,solongas等引导。举例:Ifyoucancorrectyourfaults,yourworkisgood.(5)目的状语从句常由sothat,inorderto等引导。举例:Speakloudlysothateveryonemayhearyouclearly.(6)比较状语从句常由than,as,as...as等引导。举例:IhavegotasmuchmoneyasIneed.(7)让步状语从句常由though/although,eventhough,as,if,evenif和wh-+-ever复合词引导。举例:AlthoughItriedmybesttolearnEnglish,Ihaven'tpassedtheexam.(8)方式状语从句常由as,asif,asthough,how等引导。举例:Shelooksasifsheisstillyoung.(9)结果状语从句常由that,so/suchthat等引导。举例:Sheissuchagoodteacherthatallthestudentsloveandrespecther.5、定语从句结构:......先行词(被修饰的名词或代词)+关系代词/关系副词+......一般来说,修饰人用who,whom,whose,that;修饰物用that/which。举例:1)Theroadwhichthroughourschoolisverywide.2)Thisistheschoolwheremybrotherstudies3)Isthereanythingthatyoudon'tunderstand?.