be careful with
Tenha cuidado com isso, Tom.
Be careful with that, Tom.
Be careful with him.
Tenha cuidado com o que você come.
Be careful what you eat.
Tenha cuidado com lobo disfarçado de ovelha.
Beware of the wolf in sheep’s clothing.
Be careful with that thing.
Be careful going down.
Tenha cuidado com o que deseja.
Be careful what you wish for.
Tenha cuidado com essas rochas.
Be careful with those rocks.