【下面的句子中动名词在句中做什么成分?1.representingouruniversity’sstudentassociation.2.theywerecomingtostudyatBeijinguniversity.3.afterhalfanhourofwaitingfortheirflighttoarrive.4.Isawseveralyoungpeopleenter】

　　下面的句子中动名词在句中做什么成分?

　　1.representingouruniversity’sstudentassociation.

　　2.theywerecomingtostudyatBeijinguniversity.

　　3.afterhalfanhourofwaitingfortheirflighttoarrive.

　　4.Isawseveralyoungpeopleenterthewaitingarealookingaroundcuriously.

　　5.Istoodforaminutewatchingthemandthenwenttogreetthem.

　　6.shesteppedbackappearingsurprisedandputupherhands.

　　7.thenAkiraNagatafromJapancameinsmiling.

　　8.whenDarleneCoulonfromFrancecamedashingthroughthedoor.

　　9.sherecognizedTonyGarcia’ssmilingface.

　　10.inthesamewaywithtouchingordistancebetweenpeople.

　　11.theyalsoexpresstheirfeelingusingunspoke”language”throughphysicaldistance.

　　12.butsomeculturesuseothergreetingaswell,suchastheJapanese,who,perfertonow.

　　13.studyinginternationalcustomscancertainlyhelpavoiddifficultiesintoday’sworldofculturalcrossroads.

　　注：例如一个动名词在句中作状语是什么状语?

　　这个请回答清楚……

　　如果可以翻译请尽量翻译哦!