下面的句子中动名词在句中做什么成分?1.representing our university’s student association.2.they were coming to study at Beijing university.3.after half an hour of waiting for their flight to arrive.4.I saw several young people enter the waiting area looking around curiously.5.I stood for a minute watching them and then went to greet them.6.she stepped back appearing surprised and put up her hands.7.then Akira Nagata from Japan came in smiling.8.when Darlene Coulon from

下面的句子中动名词在句中做什么成分?
1.representing our university’s student association.
2.they were coming to study at Beijing university.
3.after half an hour of waiting for their flight to arrive.
4.I saw several young people enter the waiting area looking around curiously.
5.I stood for a minute watching them and then went to greet them.
6.she stepped back appearing surprised and put up her hands.
7.then Akira Nagata from Japan came in smiling.
8.when Darlene Coulon from France came dashing through the door.
9.she recognized Tony Garcia’s smiling face.
10.in the same way with touching or distance between people.
11.they also express their feeling using unspoke”language”through physical distance.
12.but some cultures use other greeting as well,such as the Japanese,who,perfer to now.
13.studying international customs can certainly help avoid difficulties in today’s world of cultural crossroads.
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!