1. Introduction
2. Absolute interrogatives
         a) Non-manual components
         b) ‘Yes-no’ sign
         c) Repetition of the pronominal sign
         d) Alternative interrogatives
3. Partial interrogatives
         a) Non-manual component
         b) Interrogative signs
4. Rhetorical questions






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In order to obtain information from an interlocutor, signers will pose questions by means of an interrogative sentence. To mark such expressions, non-manual components are used decisively. See the following examples:

"It's raining."
"Is it raining?"

The only formal differences between both sentences are the non-manual features, which enable the differentiation between an assertive sentence from an interrogative one. Within discourse their role is different, as an assertive sentence contributes information and the interrogative sentence requests information.