Generally the gerund occupies little space in the reference grammars. In addition, the construction [tout + SG] has even a more limited presence in traditional grammars. To my knowledge, Odile Halmøy and Georges Kleiber are the ones who recently treated the gerund in detail, also the gerund with tout. Given this poor presence, this master thesis will deal with the gerund and the construction [tout + SG] in French and in Norwegian. The thesis is divided into two parts. The first part is devoted to a study of the gerund where I examine its description by different grammarians. The second part of the thesis is devoted to the study of my corpus which consists of 296 examples. The analysis focuses on two areas, the syntax and semantics, integrated into a contrastive perspective.