1. Turn off the radio, will you?

2. Turn off the raidio.
3. Turn off the raido, please.
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Is #1 a polite sentence? Is #1 the same as #3 in politeness?

4. Open the window, will you?
5. Open the window, won't you?
6. Don't open the door, will you?
7. Don't open the door, won't you?
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#7 is incorrect, right? What about the others? Are they all correct except #7?

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8. Have a cup of coffee, will you?
9. Have a cup of coffee, won't you?

(Are both OK? Which one is the more plite of the two?)

NONE IS POLITE

I think JOY means that they will all be polite if you add "please" somewhere in each question.

8 and 9 are both OK, yes.

1. Sentence #1, "Turn off the radio, will you?" is a polite sentence because it uses the phrase "will you" at the end, which makes it a request rather than an order. It is considered to be a more polite request compared to sentences without "will you."

2. Sentence #1, "Turn off the radio, will you?" is not exactly the same as sentence #3, "Turn off the radio, please." While both sentences are requests, sentence #1 implies a bit more urgency by using "will you" at the end. On the other hand, sentence #3 simply adds the word "please" to make the request polite. So, sentence #1 can be slightly more direct and urgent compared to sentence #3.

3. Sentence #7, "Don't open the door, won't you?" is indeed incorrect. The correct form would be "Don't open the door, will you?" The use of "won't you" in this context is grammatically incorrect. To form a negative request, we use "will you" instead.

4. Sentence #4, "Open the window, will you?" is a polite request.

5. Sentence #5, "Open the window, won't you?" is using "won't you" to form a polite request. It is approachable and suggests the expectation of a positive response.

6. Sentence #6, "Don't open the door, will you?" is a polite way to make a negative request, as it uses "will you" to soften the sentence.

7. Sentence #7, "Don't open the door, won't you?" is incorrect, as mentioned earlier. The correct form of this sentence would be "Don't open the door, will you?"

8. Both sentence #8, "Have a cup of coffee, will you?" and sentence #9, "Have a cup of coffee, won't you?" are grammatically correct and polite requests. However, the more polite option would be sentence #9, which uses "won't you" to form the request. It implies a higher level of politeness and expectation for a positive response.