por favor

Adverb

 * 1) please

Interjection

 * 1) please

Adverb

 * 1) please
 * 2) please
 * 3) please
 * 4) please

Interjection

 * 1) please interjection to make commands more polite

Usage notes
In Portugal, both and  are commonly used. As an impersonal and fixed expression can be perceived as slightly more neutral.

Interjection

 * 1) please
 * 2)  you're welcome
 * 1)  you're welcome
 * 1)  you're welcome