动词的-ing形式词具有名词、形容词、副词的特性，可以在句中充当主语、宾语、表语、定语、宾语补足语和状语等成分。
英语动词接ing用法大全：
动词的-ing形式作主语
Walking is a good form of exercise for both young and old.散步是一种老幼皆宜的锻炼形式。
Once your business becomes international, flying constantly will be part of your life.一旦你的生意走向国际市场，经常飞就成了你生活的一部分。
Writing headlines in English is not an easy job.用英语写标题不是一件容易的工作。
动词的-ing形式作主语时，为了平衡句子结构，也可用it作形式主语而把动名词置后。在use, good, pity, bore, time, fun, hard, funny, nice, odd, worth, difficult, worthwhile, interesting, tiring, better, enjoyable, pointless, crazy, terrible等名词或形容词作表语时，可用it作形式主语，把作主语的-ing形式倒置。
It's more difficult writing headlines in English than in Chinese.用英代比用汉语写标题更难。
It is important controlling costs at a newspaper.控制报纸的费用是重要的。
It is pleasant working with you. 跟你在一起工作是令人愉快的。
注意：there is no + 动名词为常见的结构，相当于It is impossible to do sth.
There is no getting along with him.简直无法和他相处。
There is no persuading her.无法劝说他。
