Imperative + question tag

[adelelsafty]

After an imperative we can use these tags:

will you? won't you? would you?
can you? can't you? could you?

a We can use a positive tag after a positive imperative.
Teacher:

Get out your books, will/would/can/could you?

The meaning is the same as

Will you get out your books? but the pattern with the
tag is more informal.
A negative tag expresses greater feeling.
Doctor: Keep still, won't/can't you?

This suggests that the doctor is especially anxious that the patient should keep still,
or annoyed because the patient cannot keep still.
b In warnings, reminders and good wishes, the tag is

won't you? after a positive
imperative and will you? after a negative.

Have a nice holiday,

won't you?

Don't forget your key,

will you?

In offers and invitations the tag is

will you? or won't you?
Have a chocolate, will/won't you?

These tags make the sentences more emphatic.