Imperative is a form of Verb expressing an action as a command, request or warning, but can be easily guessed from both the context and the form of the Verb. The subject is always in Second Person.
तू जा
tuu jaa
(You go)
तुम जाओ
tum jaao
(You go)
तुम न जाना
tum na jaanaa
(You need not go.)
आप आइए
aap aaie
(Please come)
आप आइएगा
aap aaiegaa
(Please do come)
ए/paDhie denote an immediate compliance of the order or request whereas the ना/naa verb form indicates a somewhat remote compliance, i.e. at some subsequent time. In some situations the use of ज़रा/zaraa is also common, i.e. ज़रा यह किताब पकड़ाना/ zaraa yah kitab pakaDaanaa, ज़रा इधर आना/ zaraa idhar aanaa. The modal suffix इएगा/iegaa also indicates with some additional element of politeness. See:
1. ये कपड़े धो दो /ye kapaDe dho do. <+immediate>
2. ये कपड़े धो देना /ye kapaDe dho denaa<-immediate-respect>
3. ये कपड़े धो दीजिएगा /ye kapaDe dho diijiegaa. <-immediate+respect>