我总是有事。
wǒ zǒng shì yǒu shì.
I'm busy all the time.
我有事要做。
wǒ yǒu shì yào zuò.
I've got work to do.
你明天有事吗?
nǐ míng tiān yǒu shì ma?
Are you engaged for tomorrow?
Press ? anytime.