可以表示时间,原因,结果,条件,行为方式或伴随动作等。1).Usingyourhead,you’llfindagoodway.Workinghard,you’llsurelysucceed.条件状语IfyouuseyourheadIfyouworkhard2).Beingpoor,hecouldn’taffordaTVset.Notknowingheraddress,wecan’tgetintouchwithher.(原因)BecausehewaspoorAswedon’tknowheraddress3).Walkinginthestreet,Isawatailor’sshop.4).Hisfatherdied,leavingthefamilyevenworseoff.时间WhenIwaswalkinginthestreet.结果andthisleftthefamilyevenworseoff5)Fourpeopleenteredtheroomlookingaroundinacuriousway.=Fourpeopleenteredtheroomandlookedaroundinacuriousway.6)Hecamerunningbacktotellmethenews.伴随状语方式现在分词作状语的几种形式1.一般形式:现在分词的动作和谓语动词的动作同时发生用:doingHearingthesadnews,sheburstintotears.2.完成式:当分词的动作先于谓语动词的动作发生用分词的完成式:havingdoneHavingfinishedtheclass,shewenthome.注意:1.现在分词作状语时,其逻辑主语必修与主句中主语一致。它们之间是主动关系。被动则用V-ed.但是短语generallyspeaking;judgingfrom/by;comparedwith;supposing;totellyouthetruth等是固定搭配。不受主语影响。Judgingfromhisface,hewasveryangry.2.作状语的V-ing形式和句子之间通常有一个逗号隔开,不能用并列连词。Studyinghard,andyouwillpasstheentranceexaminationtocollege.Studyinghard,youwillpasstheentranceexaminationtocollege.Studyhard,andyouwillpasstheentranceexaminationtocollege.FTT3.为了使V-ing形式作状语所表达的意思更为明确。可在V-ing前加适当的连词(when;while;if;though;unless等)Whilewaitingforthebus,hemetMary.