I can't stop—I'm in a rush.

　　我不能停下來(lái)—我忙著(zhù)呢。

　　He screamed at me to stop.

　　他沖著(zhù)我喊，要我停下來(lái)。

　　Let's stop and ask for directions.

　　咱們停下來(lái)問(wèn)問(wèn)路吧。