单个动名词做主语，谓语动词用单数形式。如果是并列的动名词做主语，应该视为复数。如：
Swimming and running are good.
Eating vegetibles and fruit is good.
以下是龚亚夫主编的《新编高中英语语法》普及版 p.254上的例句：
Finding a job is difficult these days. 现在找工作不容易。
Listening, speaking, reading and writing are the important things you must do in learning a foreign language. 听、说、读、写是学习一门外语时必须做到的几件重要的事情。