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1、第三讲从句作者：颜晩照一、句了成分主语、谓语、宾语、表语、定语、状语、补足语、同位语。二、名词性从句（主语、宾语、表语、同位语）一个句子在连词的引导卜-在另一个句子中充当名词使用。从句一律保持陈述句语序。1.主语从句从句在句屮充当主语成分从属连词：that,whether,讦连接彳弋词：who,whose,which,what,whoever,whatever,whichever连接副词：when,where,why,how,whenever,however,wherever（1）从属连词引导（在从句中不充当成分）Thathewillcometo
2、theconferencehasexcitedeveryone・Itisreportedthatthecoralreefsarebeingdestroyed.Whethertheworkcanbecompletedontimeisdoubtful.Itisdoubtfulwhether/iftheworkcanbecompletedontime.（2）连接代词引导（在从句中充当名词）Whatweshoulddonextremainsunknown,（what在从句屮作宾语）Whowillbeinchargeoftheprojecthasn'tbe
3、endecidedyet.（who在从句中作主语）（3）连接副词引导（在从句中作状语）Whenthenewroadisopentothetrafficisreported.（when在从句中作状语）Howwecanhelpthetwinswillbediscussedatthemeeting.（how在从句中作状语）注意：①if不能引导主语从句②主语从句中的that-般不能省略2.宾语从句从句在句屮充当宾语成分（可以作谓语动词、介词、不定式等非谓语动词的宾语）。从属连词:that,whether,if连接彳弋词：who,whom,whose,wh
4、ich,what,whoever,whomever,whosever,whatever,whichever连接昌9词：when,where,why,how,whenever,wherever,however（1）从属连词引导Hetoldusthattheywouldhelpusthroughthewholework.IfeelitapitythatIhaven'tbeentotheparty.Wearetalkingaboutwhetherweadmitstudentsintoourclub・（2）连接代词引导Doyouknowwhowonthe
5、firstprize?（who在从彳U中作主语）Katewasinterestedinwhatshehadseenattheexhibition,（what在从句中作宾语）（3）连接副词引导Hedidn'ttellmewherethemeetingwouldbeheld.（where在从句中作状语）PleasefindoutwhentheshipsailsforNewYork,（when在从句屮作状语）Hehasn'tmadeitclearwhenheisgoingtogetmarried.注意：①若宾语从句由wh■引导，其后有tobe短语作宾语
6、补足语时，则不可用it代替。Weallconsiderwhatyousaidtobeunbelievable.(对)Weallconsiderittobeunbelievablewhatyousaid.(错)②sure,certain,glad,pleased,happy,afraid,surprised,satisfied,sorry等表示'IW感的形容词后的从句常被视为宾语从旬Fmnotsurewhetherhewillagreewithus.Fmsatisfiedthattheyaretellingthetruth.Hewasgladtha
7、tshe'dcome.FmextremelysorrythatIhavetroubledyousomuch.③能用whether不能用if的情况:介词后的宾语从句decide,discuss,put,leave等动词后的宾语从句与ornot连用置于句首的宾语从句容易产生歧义时(Letmeknowwhetheryoucancome.)④不能省略that的情况learn,suggest,explain,agree,wonder,mean等动词后的宾语从句较长的宾语从句状语至于宾语从旬之前时(Irealizedatoncethat...)宾语从句中的状
8、语置于该从句句首时(Hetoldusthat,if.)主句谓语动词打宾语从句Z间有插入语吋(Hefound,however,that..
