This chapter discusses some semantic/pragmatic aspects of French questions starting with comment ‘how’ and having an interpretation of reason (similar to reason ‘why’), and investigates if and how these properties are reflected by prosody. With reason-comment questions, the speaker doubts that the proposition characterizing the event described in the question can be true, and asks the hearer to help her to revise her expectations about it, by giving her some reasons that make the existence of the event conceivable. The speaker’s doubt is often accompanied by additional emotions, such as indignation, exasperation, etc. In order to analysze the prosody of these questions, we conducted a production experiment comparing the reason and the manner reading of comment-questions. Results confirmed that prosodic cues allow us to distinguish between the two interpretations. In utterances with a reason reading, the expression of questioning force is important, even where accompanied by expressions of expectation disconfirmation and surprise.