SUFFIX
(加在动词后构成现在分词;现在分词可与助动词一起构成进行时态或像形容词一样使用)
-ing is added to verbs to form present participles. Present participles are used with auxiliary verbs to make continuous tenses. They are also used like adjectives, describing a person or thing as doing something.
例句
He was walking along the street...
他沿街走着。
Children sit round small tables, talking to each other...
孩子们围坐在小桌子旁,相互说着话。