In my class, my teacher wrote on the blackboard:
Be careful …the dog.
My teacher chose of.
But in my English - Vietnamese dictionary, I saw: careful + of/about/with/on.
Do you think the 4 a,b,c,d above are all correct and interchangeable? If not, the difference is what?
1/To emphasize “Be careful of the dog”, can I say:
Do be careful of the dog?
2/ To emphasize “Don’t be careful of the dog”, can I say:
Don’t you be careful of the dog?