他在跑。
Tā zài pǎo.
He is running.
我跑步。
Wǒ pǎobù.
I run / I go for a run.
我去跑腿。
Wǒ qù pǎotuǐ.
I'm going to run an errand.
他去跑银行。
Tā qù pǎo yínháng.
He went to the bank (to take care of something).
