how to pronounce dont know

I would like to ask you, Rebecca!What do these sentences mean (above you dropped up like examples in your tutorial)?:I dont know what to do?= I dont know what I should do in this s

how to pronounce dont know

I would like to ask you, Rebecca!
What do these sentences mean (above you dropped up like examples in your tutorial)?:
I dont know what to do?
= I dont know what I should do in this situation? (for example it is because I have not met a problem like this)
or
= I know to do nothing (I dont know to do anything), I am helpless, powerless or incompetent so I am not able to do it.
And I dont know what to say: ?
= I dont know what I should say in this situation (to you, to her/his, to us/them)? (for example it is because I have not met a problem like this or I am afraid of what you will think or you will not understand me)
or
I know to say nothing (I dont know to say anything), I am helpless, powerless or incompetent so I am not able to do it.
(for example, my teeth have been pulled out by a dentist and I am not able to talk. )
Please, let me know and explain them.
Thank you very much.

dcsk

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