We can only use Don't Worry without pronoun

[Dr. Angela]

English Grammar Tests, Elementary Level

ESL/EFL Test #70 "Chit Chat: In the train", question 10

Mr Corp: Don't you ......... madam. It is going to London but not for another 4 hours!

(a) concern
(b) think
(c) worry
(d) consider

English Grammar Tests, Elementary Level

ESL/EFL Test #70 "Chit Chat: In the train", answer 10

Mr Corp: Don't you worry madam. It is going to London but not for another 4 hours!

Correct answer: (c) worry

Your answer was: incorrect
Mr Corp: Don't you think madam. It is going to London but not for another 4 hours!
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Can we use Don't YOU worry?
I think we can only use Don't worry without pronoun.

Angela

[Mister Micawber]

.
Yes, don't you worry is OK, too-- it is a little stronger, more concerned, or more personal than don't worry. Some others:

Never you mind.
Don't you fret.
Don't you forget!
.
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Native English teacher at Mister Micawber's

[Alan]

Hi Angela,

I deliberately chose this particular construction with you to show that the man is really concerned for the woman, in other words he is reassuring her. You can expand this idea by saying: Don't you worry about it.

Alan
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English as a Second Language
You can read my ESL story In short

[Suresh]

Is not Don't you worry about it a question rather than a statement?

[Mister Micawber]

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No, here it is not a question; it is imperative used as reassurance. It has the same meaning as Don't worry, but with emphasis.
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Native English teacher at Mister Micawber's