Imperative sentence is sentences of order,command,request,advise prohibition,   proposals etc,.

 Order – v1 + Object, can you? / can’t you?

 Bring a cup of tea for me, can you?

 Prohibition – Don’t / Never + v1 + Object, will you?

Don’t open the door , will you?

 Advice – v1 + Object, should you? / shouldn’t you?

Eat  a banana  regularly for good health, shouldn’t you?

Proposal – Let + O+ v1 …., will + Subject? / won’t + Subject?

 Let us play cricket, won’t we?

 Any of these following words appear in the given statements which give negative sense the tag must be in positive/ affirmative.

 Few/ little / Hardly / scarcely / Barely / No one / No body / Nothing / No / Not / Never / neither / No

Sooner/seldom …etc.

I have little money, have I?

He could hardly solve the Question, could he?