非谓语动词作状语不定式、现在分词、过去分词作状语的比较1、不定式作目的、原因、结果状语1）作目的状语：有三种形式，可互换：todo,inordertodo,soastodo（不用于句首）e.g.Weeattolive,butwedon'tlivetoeat.Westartedearly（inorder/soas）toavoidbeinglate.我们一早动身，免得迟到。（Inorder）nottowasteelectricity,weturnedthelightoff.Checkyourcompositioncarefullysoastoavoidmistakes,（soasto 只能置于主句之后）【Exercises】1．—Didthebookgivetheinformationyouneeded?—Yes,Butit,Ihadtoreadtheentirebook,【2008 北京】A,tofindB,findC,tobefindingD,finding2,_______thiscake,you'llneed2eggs,175gsugarand175gflour,【2006 广东卷】A,HavingmadeB,MakeC,TomakeD,Making2）作原因状语：不定式常放在表示情绪反应的形容词后。如：happy,sorry,glad,sad,surprised,disappointed…不定式不放在句首。e,g,：Iamsorrytohearthatyourfatherisill,Wearegreatlydelightedtohaveanativeasourguide,有一个本地人做向导，我们真是太高兴了。【Exercises】1, Ifeelgreatlyhonoredintotheirsociety,【2008 北京卷】A,towelcomeB,welcomingC,tobewelcomedD,welcomed3）作结果状语：不定式作结果状语通常表意外的结果。e,g,Iopenedthedoortofindtheroomempty,我打开门，结果发现房间是空的。【attention】①.动词不定式前可以加上 only,更加强调'意外，想不到'还可加 never,表示‘没有再…'e,g,Hehurriedtothestationonlytofindthatthetrainhadleft,他匆忙到了车站结果却发现火车已经离开了。Theyparted,nevertoseeeachotheragain,他们分手了，从此没有再见面。②,动词不定式作结果状语的其他几种方式：so+adj,/adv,+asto,such+n,+asto,too…to,enoughto 等。e,g,Wouldyoubesokindastolendmeyourbicycle/tellmethetime?Theyliftedarockonlytodropitontheirownfeet,Heworkedhardonlytofail,他匆匆忙忙的跑到车站，结果却发现火车已经走了。2, Hehurriedtothebookingofficeonlythatalltheticketshadbeensoldout,06 陕西卷）A,totellB,tobetoldC,tellingD,told注意：不定式做结果状语的固定搭配①so…asto…Wouldyoubesokindastolendmeyourbicycle/tellmethetime?I'mnotsuchafoolastobelievethat.Hiseyesightistoopoortoreadsuchsmallletters.Theboyisoldenoughtogotoschool.2、分词（现在分词、过去分词）可作时间、条件、让步、方式、...
