Mistakes and explanation of tag questions

1. Mistakes and explanation of tag questions:
Some commons errors using tag questions are:
 Using do / does - don’t/Doesn’t with a difference tense for example simple past instead of
simple present
Julieth is very intelligent, didn’t she?
The principal sentences is in simple present tense and the question is in past so it is a wrong
example.
 When a stamen contains words such as never, no, neither, that are negative examples of
tag questions should go with an affirmative tag.
Oscar never fight in his live, Doesn’t he?
The principal sentence is negative and the question too, for this reason is a wrong example of
tag question.
 When you make an example of tag question that uses somebody, everybody, you should
us in the question the pronounce they.
Nobody wasn’t playing soccer, were day?
Some examples of correct question are this:
Use will/would with imperatives (Simple Present).
Open the window, will you?
We use won't with a polite request
Open the window, would you?
Don't open your books, will you?
Open the window, won't you?
We use shall after Let's
Let's take the next bus, shall we?
We must be at home at 8 pm, mustn't we?
Auxiliary must
Yes, we must.
No, we needn't.