“有空做某事”常见的英语表达有:“have time to do sth.” 、“be free to do sth.” 、“be available to do sth.”
例如:
“I have time to read books on weekends.”(我周末有空读书。)
“She is free to play the piano this afternoon.”(她今天下午有空弹钢琴。)
“He is available to help you tomorrow.”(他明天有空帮助你。)
“have time”侧重于强调拥有时间;“be free”更侧重于表达处于自由、空闲的状态;“be available”则强调某人或某物可以被利用、可获得的空闲。具体使用哪个短语,可以根据语境和表达需要来决定。