The article is devoted to the discussion of the notion hypothesis and the relationships between
hypothetical clauses and the use o f French subjunctive. The mood analysis o f sentences introduced
by the forms expressing hypothesis has enabled the author to distinguish the hypothesis
understood as a possibility and the hypothesis-supposition. The first one is based on the speak
er’s assumption that p is probable, i.e. it will have extralinguistic reality. The supposition in
turns assumes two possibilities: p and ~p. This distinction is the result o f conceptualization
consisting in the creation of mental images that correspond to the content of p. If the speaker
makes two mental images (p and ~p), s/he considers two possibilities and in this case we deal
with supposition. If only one mental image (p or ~p) is created, we have the only possibility.
The choice o f the subjunctive would be connected with the supposition, i.e. with the sepaker’s
distancing attitude towards the truth value of p. The indicative would express the possibility
of p, which would, in turn, correspond to the speaker’s declarative attitude.